TY  - JOUR
AU  - Aleksić, Stanko O.
AU  - Mitrović, Nebojša S.
AU  - Luković, Miloljub
AU  - Luković, Snežana
AU  - Nikolić, Nenad
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1397
AB  - Novel heat loss flowmeter for water consists of the small plastic housing and two NTC thick film segmented thermistors with reduced dimensions placed along the main axis. The segmented thermistors were printed using the modified nickel-manganese paste and sintered in air at 850 degrees C / 10 min in the conveyor furnace. The first thermistor Th-1 is cold and measures input water temperature and the second thermistor Th-2 is self-heated at constant voltage and measures water flow rate. A short switch mode operating cycle for the self-heating thermistor was introduced: 30s of self-heating from the initial state and after that 90s of natural cooling to the initial state. The self heating DC current in 30th second I-30 is recognized as the flowmeter response on stable water flow Q, while input water temperature T-w was used as a parameter. The flowmeter temperature range was divided in a few sub-ranges and adaptive DC voltage power supply (RCV) was introduced for each sub-range. The flowmeter measuring range and inaccuracy were compared with respective ones of other flowmeters.
PB  - IEEE-Inst Electrical Electronics Engineers Inc, Piscataway
T2  - IEEE Sensors Journal
T1  - Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime
EP  - 206
IS  - 1
SP  - 199
VL  - 21
DO  - 10.1109/JSEN.2020.3015023
ER  - 

@article{
author = "Aleksić, Stanko O. and Mitrović, Nebojša S. and Luković, Miloljub and Luković, Snežana and Nikolić, Nenad",
year = "2021",
abstract = "Novel heat loss flowmeter for water consists of the small plastic housing and two NTC thick film segmented thermistors with reduced dimensions placed along the main axis. The segmented thermistors were printed using the modified nickel-manganese paste and sintered in air at 850 degrees C / 10 min in the conveyor furnace. The first thermistor Th-1 is cold and measures input water temperature and the second thermistor Th-2 is self-heated at constant voltage and measures water flow rate. A short switch mode operating cycle for the self-heating thermistor was introduced: 30s of self-heating from the initial state and after that 90s of natural cooling to the initial state. The self heating DC current in 30th second I-30 is recognized as the flowmeter response on stable water flow Q, while input water temperature T-w was used as a parameter. The flowmeter temperature range was divided in a few sub-ranges and adaptive DC voltage power supply (RCV) was introduced for each sub-range. The flowmeter measuring range and inaccuracy were compared with respective ones of other flowmeters.",
publisher = "IEEE-Inst Electrical Electronics Engineers Inc, Piscataway",
journal = "IEEE Sensors Journal",
title = "Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime",
pages = "206-199",
number = "1",
volume = "21",
doi = "10.1109/JSEN.2020.3015023"
}

Aleksić, S. O., Mitrović, N. S., Luković, M., Luković, S.,& Nikolić, N.. (2021). Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime. in IEEE Sensors Journal
IEEE-Inst Electrical Electronics Engineers Inc, Piscataway., 21(1), 199-206.
https://doi.org/10.1109/JSEN.2020.3015023

Aleksić SO, Mitrović NS, Luković M, Luković S, Nikolić N. Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime. in IEEE Sensors Journal. 2021;21(1):199-206.
doi:10.1109/JSEN.2020.3015023 .

Aleksić, Stanko O., Mitrović, Nebojša S., Luković, Miloljub, Luković, Snežana, Nikolić, Nenad, "Heat Loss Flowmeter for Water Based on Thick Film Thermistors in Power Save Regime" in IEEE Sensors Journal, 21, no. 1 (2021):199-206,
https://doi.org/10.1109/JSEN.2020.3015023 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Z
AU  - Luković, Miloljub
AU  - Labus, Nebojša J.
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1348
AB  - Nanocomposite Zn2SnO4/SnO2 powder was obtained by solid state synthesis from homogenized starting nanopowders of ZnO and SnO2, mixed in the 1:1 molar ratio, structurally and morphologically characterized using X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). Thick film paste was made by adding organic vehicles to the obtained powder. Three to five layers (layer thickness approx. 12 mu m) were screen printed on alumina substrate with small test PdAg electrodes and fired at 600 degrees C for 30 minutes. SEM analysis confirmed formation of a porous structure suitable for humidity sensing. Impedance response was studied at the working temperatures of 25 and 50 degrees C in a humidity chamber where the relative humidity (RH) was 30-90% and measured frequency 42 Hz - 1 MHz. With increase in film thickness the overall sensor impedance increased. It reduced at 100 Hz from 36 to 0.25 M Omega (60 mu m), from 23.4 to 0.25 M Omega (48 mu m) and from 6.8 to 0.02 M Omega (36 mu m) at 25 degrees C, while at 50 degrees C and also 100 Hz it reduced from 14 M Omega to 0.72 \text{M}\Omega (48 mu m) for RH 30 and 90%, respectively. The response (8 s) and recovery (10 s) was fast, showing that this nanocomposite has potential for application in humidity sensing.
PB  - Institute of Electrical and Electronics Engineers Inc.
T2  - IEEE Sensors Journal
T1  - Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material
EP  - 7516
IS  - 14
SP  - 7509
VL  - 20
DO  - 10.1109/JSEN.2020.2983135
ER  - 

@article{
author = "Nikolić, Maria Vesna and Dojčinović, Milena and Vasiljević, Zorka Z and Luković, Miloljub and Labus, Nebojša J.",
year = "2020",
abstract = "Nanocomposite Zn2SnO4/SnO2 powder was obtained by solid state synthesis from homogenized starting nanopowders of ZnO and SnO2, mixed in the 1:1 molar ratio, structurally and morphologically characterized using X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). Thick film paste was made by adding organic vehicles to the obtained powder. Three to five layers (layer thickness approx. 12 mu m) were screen printed on alumina substrate with small test PdAg electrodes and fired at 600 degrees C for 30 minutes. SEM analysis confirmed formation of a porous structure suitable for humidity sensing. Impedance response was studied at the working temperatures of 25 and 50 degrees C in a humidity chamber where the relative humidity (RH) was 30-90% and measured frequency 42 Hz - 1 MHz. With increase in film thickness the overall sensor impedance increased. It reduced at 100 Hz from 36 to 0.25 M Omega (60 mu m), from 23.4 to 0.25 M Omega (48 mu m) and from 6.8 to 0.02 M Omega (36 mu m) at 25 degrees C, while at 50 degrees C and also 100 Hz it reduced from 14 M Omega to 0.72 \text{M}\Omega (48 mu m) for RH 30 and 90%, respectively. The response (8 s) and recovery (10 s) was fast, showing that this nanocomposite has potential for application in humidity sensing.",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
journal = "IEEE Sensors Journal",
title = "Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material",
pages = "7516-7509",
number = "14",
volume = "20",
doi = "10.1109/JSEN.2020.2983135"
}

Nikolić, M. V., Dojčinović, M., Vasiljević, Z. Z., Luković, M.,& Labus, N. J.. (2020). Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material. in IEEE Sensors Journal
Institute of Electrical and Electronics Engineers Inc.., 20(14), 7509-7516.
https://doi.org/10.1109/JSEN.2020.2983135

Nikolić MV, Dojčinović M, Vasiljević ZZ, Luković M, Labus NJ. Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material. in IEEE Sensors Journal. 2020;20(14):7509-7516.
doi:10.1109/JSEN.2020.2983135 .

Nikolić, Maria Vesna, Dojčinović, Milena, Vasiljević, Zorka Z, Luković, Miloljub, Labus, Nebojša J., "Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material" in IEEE Sensors Journal, 20, no. 14 (2020):7509-7516,
https://doi.org/10.1109/JSEN.2020.2983135 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Labus, Nebojša J.
AU  - Pavlović, Vera P.
AU  - Marković, Smilja
AU  - Luković, Miloljub
AU  - Tadić, Nenad B.
AU  - Vujančević, Jelena
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1364
AB  - Nanocrystalline Zn2SnO4/SnO2 powder was obtained by a solid state reaction of ZnO and SnO2 nanopowders mixed in the molar ratio 1:1. The phase composition of the obtained powder was studied by XRD and Raman spectroscopy, morphology and texture were characterized by FESEM, TEM, BET and Hg porosimetry, while XPS and FTIR spectroscopy were used to determine the surface chemistry. The influence of humidity on complex impedance was monitored on bulk samples in the relative humidity (RH) range 30-90% in a climatic chamber in the frequency range 42 Hz- 1 MHz at working temperatures of 25 and 50 degrees C. Change in RH had a significant influence on impedance reduction, especially noticeable in the lower frequency range, indicating potential application of this nanocomposite as a humidity sensing material. Increase in RH led to an increase in AC conductivity that changed with frequency according to the Jonscher power law. The frequency exponent decreased with increase in RH and sample temperature indicating that the correlated hopping barrier model is the dominant conduction mechanism. Complex impedance was analyzed using an equivalent circuit consisting of a parallel resistance and constant phase element, showing the dominant influence of grain boundaries at both working temperatures (25 and 50 degrees C). The resistance decreased, while the capacitance and relaxation frequency increased with increase in RH. At high humidity an added Wartburg element enabled modeling of the charge diffusion process.
PB  - Springer, Dordrecht
T2  - Journal of Electroceramics
T1  - Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance
EP  - 147
IS  - 4
SP  - 135
VL  - 45
DO  - 10.1007/s10832-021-00232-z
ER  - 

@article{
author = "Nikolić, Maria Vesna and Labus, Nebojša J. and Pavlović, Vera P. and Marković, Smilja and Luković, Miloljub and Tadić, Nenad B. and Vujančević, Jelena and Vlahović, Branislav and Pavlović, Vladimir B",
year = "2020",
abstract = "Nanocrystalline Zn2SnO4/SnO2 powder was obtained by a solid state reaction of ZnO and SnO2 nanopowders mixed in the molar ratio 1:1. The phase composition of the obtained powder was studied by XRD and Raman spectroscopy, morphology and texture were characterized by FESEM, TEM, BET and Hg porosimetry, while XPS and FTIR spectroscopy were used to determine the surface chemistry. The influence of humidity on complex impedance was monitored on bulk samples in the relative humidity (RH) range 30-90% in a climatic chamber in the frequency range 42 Hz- 1 MHz at working temperatures of 25 and 50 degrees C. Change in RH had a significant influence on impedance reduction, especially noticeable in the lower frequency range, indicating potential application of this nanocomposite as a humidity sensing material. Increase in RH led to an increase in AC conductivity that changed with frequency according to the Jonscher power law. The frequency exponent decreased with increase in RH and sample temperature indicating that the correlated hopping barrier model is the dominant conduction mechanism. Complex impedance was analyzed using an equivalent circuit consisting of a parallel resistance and constant phase element, showing the dominant influence of grain boundaries at both working temperatures (25 and 50 degrees C). The resistance decreased, while the capacitance and relaxation frequency increased with increase in RH. At high humidity an added Wartburg element enabled modeling of the charge diffusion process.",
publisher = "Springer, Dordrecht",
journal = "Journal of Electroceramics",
title = "Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance",
pages = "147-135",
number = "4",
volume = "45",
doi = "10.1007/s10832-021-00232-z"
}

Nikolić, M. V., Labus, N. J., Pavlović, V. P., Marković, S., Luković, M., Tadić, N. B., Vujančević, J., Vlahović, B.,& Pavlović, V. B.. (2020). Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance. in Journal of Electroceramics
Springer, Dordrecht., 45(4), 135-147.
https://doi.org/10.1007/s10832-021-00232-z

Nikolić MV, Labus NJ, Pavlović VP, Marković S, Luković M, Tadić NB, Vujančević J, Vlahović B, Pavlović VB. Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance. in Journal of Electroceramics. 2020;45(4):135-147.
doi:10.1007/s10832-021-00232-z .

Nikolić, Maria Vesna, Labus, Nebojša J., Pavlović, Vera P., Marković, Smilja, Luković, Miloljub, Tadić, Nenad B., Vujančević, Jelena, Vlahović, Branislav, Pavlović, Vladimir B, "Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance" in Journal of Electroceramics, 45, no. 4 (2020):135-147,
https://doi.org/10.1007/s10832-021-00232-z . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Krstić, Jugoslav B.
AU  - Labus, Nebojša J.
AU  - Luković, Miloljub
AU  - Dojčinović, Milena
AU  - Radovanović, Milan
AU  - Tadić, Nenad B.
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1349
AB  - Iron manganite (FeMnO3) powder with a cubic (bixbyite, Ia (3) over bar) crystal structure was obtained by a solid state reaction. Thick film paste (powder + organic vehicles) was screen printed on alumina substrate with test interdigitated PdAg electrodes. Significant porosity (60.6%) composed of macropores (larger than 100 nm) was determined by Hg porosimetry, changing only slightly from the first extrusion run indicating a stable pore system. Hg porosimetry evaluation of thick film samples enabled estimation of true textural parameters of the thick film compared to powder. Impedance response of the thick film sensor was monitored in a humidity chamber in the relative humidity (RH) range 30-90%, at room temperature (25 degrees C) and frequency range from 42 Hz to 1 MHz. At 100 Hz the impedance reduced from 10.41 M Omega for RH 30% to 0.68 M Omega for RH 90%. Analysis of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The sensor response and recovery was fast (several seconds) and a relatively low hysteresis value of 2.8% was obtained.
PB  - Elsevier, Amsterdam
T2  - Materials Science and Engineering B-Advanced Functional Solid-State Materials
T1  - Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing
VL  - 257
DO  - 10.1016/j.mseb.2020.114547
ER  - 

@article{
author = "Nikolić, Maria Vesna and Krstić, Jugoslav B. and Labus, Nebojša J. and Luković, Miloljub and Dojčinović, Milena and Radovanović, Milan and Tadić, Nenad B.",
year = "2020",
abstract = "Iron manganite (FeMnO3) powder with a cubic (bixbyite, Ia (3) over bar) crystal structure was obtained by a solid state reaction. Thick film paste (powder + organic vehicles) was screen printed on alumina substrate with test interdigitated PdAg electrodes. Significant porosity (60.6%) composed of macropores (larger than 100 nm) was determined by Hg porosimetry, changing only slightly from the first extrusion run indicating a stable pore system. Hg porosimetry evaluation of thick film samples enabled estimation of true textural parameters of the thick film compared to powder. Impedance response of the thick film sensor was monitored in a humidity chamber in the relative humidity (RH) range 30-90%, at room temperature (25 degrees C) and frequency range from 42 Hz to 1 MHz. At 100 Hz the impedance reduced from 10.41 M Omega for RH 30% to 0.68 M Omega for RH 90%. Analysis of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The sensor response and recovery was fast (several seconds) and a relatively low hysteresis value of 2.8% was obtained.",
publisher = "Elsevier, Amsterdam",
journal = "Materials Science and Engineering B-Advanced Functional Solid-State Materials",
title = "Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing",
volume = "257",
doi = "10.1016/j.mseb.2020.114547"
}

Nikolić, M. V., Krstić, J. B., Labus, N. J., Luković, M., Dojčinović, M., Radovanović, M.,& Tadić, N. B.. (2020). Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing. in Materials Science and Engineering B-Advanced Functional Solid-State Materials
Elsevier, Amsterdam., 257.
https://doi.org/10.1016/j.mseb.2020.114547

Nikolić MV, Krstić JB, Labus NJ, Luković M, Dojčinović M, Radovanović M, Tadić NB. Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing. in Materials Science and Engineering B-Advanced Functional Solid-State Materials. 2020;257.
doi:10.1016/j.mseb.2020.114547 .

Nikolić, Maria Vesna, Krstić, Jugoslav B., Labus, Nebojša J., Luković, Miloljub, Dojčinović, Milena, Radovanović, Milan, Tadić, Nenad B., "Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing" in Materials Science and Engineering B-Advanced Functional Solid-State Materials, 257 (2020),
https://doi.org/10.1016/j.mseb.2020.114547 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1345
AB  - A porous MgFe2O4-Fe2O3-SnO2 bulk compound with varying SnO2 content was obtained by sintering an appropriate mixture of magnesium oxide, hematite and tin oxide nanopowders at 1000 and 1100 degrees C. The obtained structure was confirmed by X-ray diffraction analysis. Scanning electron microscopy was used to analyze sample morphology, showing that the addition of SnO2 resulted in an inhomogeneous microstructure with smaller grain size especially at 1000 degrees C. Significant grain growth of hematite grains was noted at 1100 degrees C. The influence of relative humidity in the range 30-90% was monitored at room temperature (25 degrees C) in the frequency range 42 Hz-1 MHz. The highest reduction of impedance with humidity was noted at lower frequency. Addition of low amounts of SnO(2)and sintering at 1000 degrees C resulted in the highest sensitivity at 105 Hz of 0.391 M Omega/%RH in the RH30-90% range, while the compound with the highest amount of SnO2 showed the largest decrease in impedance with increase in relative humidity similar to 26 times. All samples showed low hysteresis (below 2%). Complex impedance data was analyzed using equivalent circuits reflecting the dominant influence of the grain boundary in the lower relative humidity range (30-60%) and both grain boundary and grain components in the higher relative humidity range (60-90%).
PB  - MDPI, Basel
T2  - Chemosensors
T1  - Influence of SnO2 Content on the Humidity Dependent Impedance of the MgFe2O4-Fe2O3-SnO2 Compound
IS  - 2
VL  - 8
DO  - 10.3390/chemosensors8020039
ER  - 

@article{
author = "Nikolić, Maria Vesna and Luković, Miloljub",
year = "2020",
abstract = "A porous MgFe2O4-Fe2O3-SnO2 bulk compound with varying SnO2 content was obtained by sintering an appropriate mixture of magnesium oxide, hematite and tin oxide nanopowders at 1000 and 1100 degrees C. The obtained structure was confirmed by X-ray diffraction analysis. Scanning electron microscopy was used to analyze sample morphology, showing that the addition of SnO2 resulted in an inhomogeneous microstructure with smaller grain size especially at 1000 degrees C. Significant grain growth of hematite grains was noted at 1100 degrees C. The influence of relative humidity in the range 30-90% was monitored at room temperature (25 degrees C) in the frequency range 42 Hz-1 MHz. The highest reduction of impedance with humidity was noted at lower frequency. Addition of low amounts of SnO(2)and sintering at 1000 degrees C resulted in the highest sensitivity at 105 Hz of 0.391 M Omega/%RH in the RH30-90% range, while the compound with the highest amount of SnO2 showed the largest decrease in impedance with increase in relative humidity similar to 26 times. All samples showed low hysteresis (below 2%). Complex impedance data was analyzed using equivalent circuits reflecting the dominant influence of the grain boundary in the lower relative humidity range (30-60%) and both grain boundary and grain components in the higher relative humidity range (60-90%).",
publisher = "MDPI, Basel",
journal = "Chemosensors",
title = "Influence of SnO2 Content on the Humidity Dependent Impedance of the MgFe2O4-Fe2O3-SnO2 Compound",
number = "2",
volume = "8",
doi = "10.3390/chemosensors8020039"
}

Nikolić, M. V.,& Luković, M.. (2020). Influence of SnO2 Content on the Humidity Dependent Impedance of the MgFe2O4-Fe2O3-SnO2 Compound. in Chemosensors
MDPI, Basel., 8(2).
https://doi.org/10.3390/chemosensors8020039

Nikolić MV, Luković M. Influence of SnO2 Content on the Humidity Dependent Impedance of the MgFe2O4-Fe2O3-SnO2 Compound. in Chemosensors. 2020;8(2).
doi:10.3390/chemosensors8020039 .

Nikolić, Maria Vesna, Luković, Miloljub, "Influence of SnO2 Content on the Humidity Dependent Impedance of the MgFe2O4-Fe2O3-SnO2 Compound" in Chemosensors, 8, no. 2 (2020),
https://doi.org/10.3390/chemosensors8020039 . .

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Z
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1624
AB  - Starting ZnO and SnO2 nanopowders (<100 nm) were mixed in a suitable ratio and calcined at 1050 °C for 2 hours to obtain nanocrystalline SnO2-Zn2SnO4 composite powder. Structural characterization performed by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) showed that a nanocrystalline composite SnO2-Zn2SnO4 powder was obtained. Thick film paste was made by adding organic vehicles to the powder. Screen printing of four and five layers of thick film paste was performed on two interdigitated test electrode configurations. They were calcined at 500 and 600 °C for 30 minutes. Impedance response was analyzed at several working temperatures (20-60 °C) in the relative humidity range 30-90% and frequency 42 Hz to 1 MHz. Increase in relative humidity lead to a decrease in impedance, especially at lower frequencies. The sensor time delay between absorption and desorption processes was low and the response and recovery times fast showing that the nanocystalline SnO2-Zn2SnO4 composite has potential for application in humidity sensing.
PB  - Belgrade : Institute for Multidisciplinary Research
C3  - Programme and the Book of Abstracts / 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia
T1  - Nanocrystalline SnO2-Zn2SnO4 composite thick films applied as humidity sensors
EP  - 82
SP  - 82
UR  - https://hdl.handle.net/21.15107/rcub_dais_7006
ER  - 

@conference{
author = "Nikolić, Maria Vesna and Luković, Miloljub and Dojčinović, Milena and Vasiljević, Zorka Z",
year = "2019",
abstract = "Starting ZnO and SnO2 nanopowders (<100 nm) were mixed in a suitable ratio and calcined at 1050 °C for 2 hours to obtain nanocrystalline SnO2-Zn2SnO4 composite powder. Structural characterization performed by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) showed that a nanocrystalline composite SnO2-Zn2SnO4 powder was obtained. Thick film paste was made by adding organic vehicles to the powder. Screen printing of four and five layers of thick film paste was performed on two interdigitated test electrode configurations. They were calcined at 500 and 600 °C for 30 minutes. Impedance response was analyzed at several working temperatures (20-60 °C) in the relative humidity range 30-90% and frequency 42 Hz to 1 MHz. Increase in relative humidity lead to a decrease in impedance, especially at lower frequencies. The sensor time delay between absorption and desorption processes was low and the response and recovery times fast showing that the nanocystalline SnO2-Zn2SnO4 composite has potential for application in humidity sensing.",
publisher = "Belgrade : Institute for Multidisciplinary Research",
journal = "Programme and the Book of Abstracts / 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia",
title = "Nanocrystalline SnO2-Zn2SnO4 composite thick films applied as humidity sensors",
pages = "82-82",
url = "https://hdl.handle.net/21.15107/rcub_dais_7006"
}

Nikolić, M. V., Luković, M., Dojčinović, M.,& Vasiljević, Z. Z.. (2019). Nanocrystalline SnO2-Zn2SnO4 composite thick films applied as humidity sensors. in Programme and the Book of Abstracts / 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research., 82-82.
https://hdl.handle.net/21.15107/rcub_dais_7006

Nikolić MV, Luković M, Dojčinović M, Vasiljević ZZ. Nanocrystalline SnO2-Zn2SnO4 composite thick films applied as humidity sensors. in Programme and the Book of Abstracts / 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia. 2019;:82-82.
https://hdl.handle.net/21.15107/rcub_dais_7006 .

Nikolić, Maria Vesna, Luković, Miloljub, Dojčinović, Milena, Vasiljević, Zorka Z, "Nanocrystalline SnO2-Zn2SnO4 composite thick films applied as humidity sensors" in Programme and the Book of Abstracts / 5th Conference of The Serbian Society for Ceramic Materials, 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia (2019):82-82,
https://hdl.handle.net/21.15107/rcub_dais_7006 .

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub
AU  - Vasiljević, Zorka Z
AU  - Dojčinović, Milena
AU  - Labus, Nebojša J.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6999
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1621
AB  - Though different metal oxide systems have been investigated and applied in humidity sensing as resistive or capacitive ceramic humidity sensors new materials remain the subject of much research. Iron manganite (FeMnO3) has a bixybyite type structure with the cubic space group. Iron manganite powder was obtained by solid state synthesis (milling in a planetary ball mill, calcination at 1000°C for 2 hours, milling) of starting hematite (Fe2O3) and manganese carbonate (MnCO3) powders mixed in a suitable ratio. Bulk samples were obtained by sintering green samples of pressed powder 8 mm in diameter at 1000oC for 4 hours. Thick film paste was obtained by mixing the powder with organic vehicles. Four layers were screen printed on test interdigitated electrodes on alumina substrate and fired at 900oC for 6 h. XRD analysis of bulk and thick film samples confirmed the formation of iron manganite with a perovskite structure. Scanning electron microscopy (SEM) analysis of freshly cleaved bulk samples showed a network of interconnected grains and pores. A similar structure was observed for the thick film sample surface. Change of complex impedance was monitored in a humidity chamber in the relative humidity range 30-90% at the working temperature of 25°C and frequency range 42 Hz to 1 MHz. In bulk samples at 100 Hz the impedance decreased from 32 (RH 30%) to 3 MΩ (RH 90%), while in thick film samples on test interdigitated electrodes it decreased from 8.24 (RH 30%) to 0.87 MΩ ((RH 90%). The thick film sensor response and recovery was several seconds and a low hysteresis value of 2.78% was obtained showing that iron manganite can successfully be applied for humidity sensing applications.
PB  - Budapest : [s. n.]
C3  - Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest
T1  - Humidity sensing potential of iron manganite (FeMNO3)
EP  - 17
SP  - 16
UR  - https://hdl.handle.net/21.15107/rcub_dais_6999
ER  - 

@conference{
author = "Nikolić, Maria Vesna and Luković, Miloljub and Vasiljević, Zorka Z and Dojčinović, Milena and Labus, Nebojša J.",
year = "2019",
abstract = "Though different metal oxide systems have been investigated and applied in humidity sensing as resistive or capacitive ceramic humidity sensors new materials remain the subject of much research. Iron manganite (FeMnO3) has a bixybyite type structure with the cubic space group. Iron manganite powder was obtained by solid state synthesis (milling in a planetary ball mill, calcination at 1000°C for 2 hours, milling) of starting hematite (Fe2O3) and manganese carbonate (MnCO3) powders mixed in a suitable ratio. Bulk samples were obtained by sintering green samples of pressed powder 8 mm in diameter at 1000oC for 4 hours. Thick film paste was obtained by mixing the powder with organic vehicles. Four layers were screen printed on test interdigitated electrodes on alumina substrate and fired at 900oC for 6 h. XRD analysis of bulk and thick film samples confirmed the formation of iron manganite with a perovskite structure. Scanning electron microscopy (SEM) analysis of freshly cleaved bulk samples showed a network of interconnected grains and pores. A similar structure was observed for the thick film sample surface. Change of complex impedance was monitored in a humidity chamber in the relative humidity range 30-90% at the working temperature of 25°C and frequency range 42 Hz to 1 MHz. In bulk samples at 100 Hz the impedance decreased from 32 (RH 30%) to 3 MΩ (RH 90%), while in thick film samples on test interdigitated electrodes it decreased from 8.24 (RH 30%) to 0.87 MΩ ((RH 90%). The thick film sensor response and recovery was several seconds and a low hysteresis value of 2.78% was obtained showing that iron manganite can successfully be applied for humidity sensing applications.",
publisher = "Budapest : [s. n.]",
journal = "Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest",
title = "Humidity sensing potential of iron manganite (FeMNO3)",
pages = "17-16",
url = "https://hdl.handle.net/21.15107/rcub_dais_6999"
}

Nikolić, M. V., Luković, M., Vasiljević, Z. Z., Dojčinović, M.,& Labus, N. J.. (2019). Humidity sensing potential of iron manganite (FeMNO3). in Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest
Budapest : [s. n.]., 16-17.
https://hdl.handle.net/21.15107/rcub_dais_6999

Nikolić MV, Luković M, Vasiljević ZZ, Dojčinović M, Labus NJ. Humidity sensing potential of iron manganite (FeMNO3). in Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest. 2019;:16-17.
https://hdl.handle.net/21.15107/rcub_dais_6999 .

Nikolić, Maria Vesna, Luković, Miloljub, Vasiljević, Zorka Z, Dojčinović, Milena, Labus, Nebojša J., "Humidity sensing potential of iron manganite (FeMNO3)" in Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest (2019):16-17,
https://hdl.handle.net/21.15107/rcub_dais_6999 .

TY  - CONF
AU  - Menicanin, Aleksandar
AU  - Luković, Miloljub
AU  - Blaz, Nelu V.
AU  - Movrin, D.
AU  - Živanov, Ljiljana D
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1269
AB  - In this paper, we present spiral inductor fabricated by 3D additive manufacturing (AM) with added ferrite disc in the middle of the inductor (center), first approach, and with added ferrite disc beneath the inductor, second approach. The inductor was made with conductive epoxy silver based paste which was injected in a spiral channel fabricated in polylactic acid (PLA) substrate (model) using AM technology. 3D model and obtained results present a connection between passive components production and additive manufacturing. The designed spiral inductor has four full turns, with inner diameter 10 mm and outer diameter 24 mm The total dimension of the component is 27 mm x 27 mm The prototype results show good characteristics and demonstrate an innovative approach to fabricate low-cost, passive devices such as an inductor.
PB  - Institute of Electrical and Electronics Engineers Inc.
C3  - EUROCON 2019 - 18th International Conference on Smart Technologies
T1  - Design and Fabrication of Ferrite Inductor Using 3D Printed Spiral Coil and Ferrite Disc
DO  - 10.1109/EUROCON.2019.8861829
ER  - 

@conference{
author = "Menicanin, Aleksandar and Luković, Miloljub and Blaz, Nelu V. and Movrin, D. and Živanov, Ljiljana D",
year = "2019",
abstract = "In this paper, we present spiral inductor fabricated by 3D additive manufacturing (AM) with added ferrite disc in the middle of the inductor (center), first approach, and with added ferrite disc beneath the inductor, second approach. The inductor was made with conductive epoxy silver based paste which was injected in a spiral channel fabricated in polylactic acid (PLA) substrate (model) using AM technology. 3D model and obtained results present a connection between passive components production and additive manufacturing. The designed spiral inductor has four full turns, with inner diameter 10 mm and outer diameter 24 mm The total dimension of the component is 27 mm x 27 mm The prototype results show good characteristics and demonstrate an innovative approach to fabricate low-cost, passive devices such as an inductor.",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
journal = "EUROCON 2019 - 18th International Conference on Smart Technologies",
title = "Design and Fabrication of Ferrite Inductor Using 3D Printed Spiral Coil and Ferrite Disc",
doi = "10.1109/EUROCON.2019.8861829"
}

Menicanin, A., Luković, M., Blaz, N. V., Movrin, D.,& Živanov, L. D.. (2019). Design and Fabrication of Ferrite Inductor Using 3D Printed Spiral Coil and Ferrite Disc. in EUROCON 2019 - 18th International Conference on Smart Technologies
Institute of Electrical and Electronics Engineers Inc...
https://doi.org/10.1109/EUROCON.2019.8861829

Menicanin A, Luković M, Blaz NV, Movrin D, Živanov LD. Design and Fabrication of Ferrite Inductor Using 3D Printed Spiral Coil and Ferrite Disc. in EUROCON 2019 - 18th International Conference on Smart Technologies. 2019;.
doi:10.1109/EUROCON.2019.8861829 .

Menicanin, Aleksandar, Luković, Miloljub, Blaz, Nelu V., Movrin, D., Živanov, Ljiljana D, "Design and Fabrication of Ferrite Inductor Using 3D Printed Spiral Coil and Ferrite Disc" in EUROCON 2019 - 18th International Conference on Smart Technologies (2019),
https://doi.org/10.1109/EUROCON.2019.8861829 . .

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Z
AU  - Labus, Nebojša J.
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1268
AB  - Iron manganite (FeMnO3) thick film samples were obtained by screen printing four layers of thick film paste on alumina substrate with test PdAg electrodes. The paste was made by adding organic vehicles to iron manganite powder obtained by solid state synthesis of starting hematite (alpha-Fe2O3) and manganese carbonate (MnCO3) powders. SEM analysis of the sample surface revealed a porous structure with a uniform particle size distribution. The average resulting film thickness was 48. m. The change of impedance was monitored in a humidity chamber in the relative humidity range 30.90% at three working temperatures: 25, 50 and 75 degrees C in the frequency range 42 Hz to 1 MHz. With increase in relative humidity the measured impedance decreased, showing the greatest difference at lower frequency with a low time delay (below 3%) between absorption and desorption processes (hysteresis). The sensor response and recovery times were several seconds.
PB  - IEEE Computer Society
C3  - Proceedings of the International Spring Seminar on Electronics Technology
T1  - Application of Iron Manganite Thick Films for Humidity Sensing
VL  - 2019-May
DO  - 10.1109/ISSE.2019.8810291
ER  - 

@conference{
author = "Nikolić, Maria Vesna and Luković, Miloljub and Dojčinović, Milena and Vasiljević, Zorka Z and Labus, Nebojša J.",
year = "2019",
abstract = "Iron manganite (FeMnO3) thick film samples were obtained by screen printing four layers of thick film paste on alumina substrate with test PdAg electrodes. The paste was made by adding organic vehicles to iron manganite powder obtained by solid state synthesis of starting hematite (alpha-Fe2O3) and manganese carbonate (MnCO3) powders. SEM analysis of the sample surface revealed a porous structure with a uniform particle size distribution. The average resulting film thickness was 48. m. The change of impedance was monitored in a humidity chamber in the relative humidity range 30.90% at three working temperatures: 25, 50 and 75 degrees C in the frequency range 42 Hz to 1 MHz. With increase in relative humidity the measured impedance decreased, showing the greatest difference at lower frequency with a low time delay (below 3%) between absorption and desorption processes (hysteresis). The sensor response and recovery times were several seconds.",
publisher = "IEEE Computer Society",
journal = "Proceedings of the International Spring Seminar on Electronics Technology",
title = "Application of Iron Manganite Thick Films for Humidity Sensing",
volume = "2019-May",
doi = "10.1109/ISSE.2019.8810291"
}

Nikolić, M. V., Luković, M., Dojčinović, M., Vasiljević, Z. Z.,& Labus, N. J.. (2019). Application of Iron Manganite Thick Films for Humidity Sensing. in Proceedings of the International Spring Seminar on Electronics Technology
IEEE Computer Society., 2019-May.
https://doi.org/10.1109/ISSE.2019.8810291

Nikolić MV, Luković M, Dojčinović M, Vasiljević ZZ, Labus NJ. Application of Iron Manganite Thick Films for Humidity Sensing. in Proceedings of the International Spring Seminar on Electronics Technology. 2019;2019-May.
doi:10.1109/ISSE.2019.8810291 .

Nikolić, Maria Vesna, Luković, Miloljub, Dojčinović, Milena, Vasiljević, Zorka Z, Labus, Nebojša J., "Application of Iron Manganite Thick Films for Humidity Sensing" in Proceedings of the International Spring Seminar on Electronics Technology, 2019-May (2019),
https://doi.org/10.1109/ISSE.2019.8810291 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Z
AU  - Luković, Miloljub
AU  - Pavlović, Vera P.
AU  - Krstic, Jugoslav B.
AU  - Vujančević, Jelena
AU  - Tadić, Nenad B.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1261
AB  - Zinc ferrite nanocrystalline powder was obtained by solid state synthesis of starting zinc oxide and hematite nanopowders. Field emission scanning electron microscopy and transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy confirmed the formation of nanocrystalline zinc-ferrite powder with a mixed spinel structure with small amounts of remaining zinc oxide and hematite as impurities. Thick film paste was formed and screen printed on test interdigitated PdAg electrodes on alumina substrate. Formation of a porous nanocrystalline structure was confirmed by scanning electron microscopy and Hg porosimetry. Humidity sensing properties of zinc ferrite thick films were investigated by monitoring the change in impedance in the relative humidity interval 30%-90% in the frequency range 42 Hz-1 MHz at room temperature (25 degrees C) and 50 degrees C. At 42 Hz at both analyzed temperatures the impedance reduced 46 times in the humidity range 30%-90%. The dominant influence of grain boundaries was confirmed by analysis of complex impedance with an equivalent circuit.
PB  - Wiley, Hoboken
T2  - International Journal of Applied Ceramic Technology
T1  - Investigation of ZnFe2O4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing
EP  - 993
IS  - 3
SP  - 981
VL  - 16
DO  - 10.1111/ijac.13190
ER  - 

@article{
author = "Nikolić, Maria Vesna and Vasiljević, Zorka Z and Luković, Miloljub and Pavlović, Vera P. and Krstic, Jugoslav B. and Vujančević, Jelena and Tadić, Nenad B. and Vlahović, Branislav and Pavlović, Vladimir B",
year = "2019",
abstract = "Zinc ferrite nanocrystalline powder was obtained by solid state synthesis of starting zinc oxide and hematite nanopowders. Field emission scanning electron microscopy and transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy confirmed the formation of nanocrystalline zinc-ferrite powder with a mixed spinel structure with small amounts of remaining zinc oxide and hematite as impurities. Thick film paste was formed and screen printed on test interdigitated PdAg electrodes on alumina substrate. Formation of a porous nanocrystalline structure was confirmed by scanning electron microscopy and Hg porosimetry. Humidity sensing properties of zinc ferrite thick films were investigated by monitoring the change in impedance in the relative humidity interval 30%-90% in the frequency range 42 Hz-1 MHz at room temperature (25 degrees C) and 50 degrees C. At 42 Hz at both analyzed temperatures the impedance reduced 46 times in the humidity range 30%-90%. The dominant influence of grain boundaries was confirmed by analysis of complex impedance with an equivalent circuit.",
publisher = "Wiley, Hoboken",
journal = "International Journal of Applied Ceramic Technology",
title = "Investigation of ZnFe2O4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing",
pages = "993-981",
number = "3",
volume = "16",
doi = "10.1111/ijac.13190"
}

Nikolić, M. V., Vasiljević, Z. Z., Luković, M., Pavlović, V. P., Krstic, J. B., Vujančević, J., Tadić, N. B., Vlahović, B.,& Pavlović, V. B.. (2019). Investigation of ZnFe2O4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing. in International Journal of Applied Ceramic Technology
Wiley, Hoboken., 16(3), 981-993.
https://doi.org/10.1111/ijac.13190

Nikolić MV, Vasiljević ZZ, Luković M, Pavlović VP, Krstic JB, Vujančević J, Tadić NB, Vlahović B, Pavlović VB. Investigation of ZnFe2O4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing. in International Journal of Applied Ceramic Technology. 2019;16(3):981-993.
doi:10.1111/ijac.13190 .

Nikolić, Maria Vesna, Vasiljević, Zorka Z, Luković, Miloljub, Pavlović, Vera P., Krstic, Jugoslav B., Vujančević, Jelena, Tadić, Nenad B., Vlahović, Branislav, Pavlović, Vladimir B, "Investigation of ZnFe2O4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing" in International Journal of Applied Ceramic Technology, 16, no. 3 (2019):981-993,
https://doi.org/10.1111/ijac.13190 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub
AU  - Labus, Nebojša J.
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1211
AB  - Bulk samples of iron manganite with a cubic Ia3 lt mml:mo stretchy="false"> lt overbar> lt /mml:mover> crystal structure were obtained by solid state synthesis (combination of milling and calcination) of starting hematite (Fe2O3) and manganese carbonate (MnCO3) powders followed by sintering green samples at 1000 degrees C for 4h. Structural characterization performed by XRD and SEM analysis confirmed the formation of iron manganite in the form of a porous network of grains and pores with average particle size of 530 and 430nm, respectively. The influence of humidity on complex impedance and dielectric properties was monitored in the relative humidity range 30-90% in a climatic chamber in the frequency range 42Hz-1MHz at working temperatures of 25 and 50 degrees C. At the lowest frequency of 42Hz the impedance reduced with relative humidity from 57.9 (RH 30%) to 3.21M ohm (RH 90%) at 25 degrees C, and from 23.3 (RH 30%) to 1.3M ohm (RH 90%) at 50 degrees C that is approximately 20 times. Analysis of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The influence of grains (bulk) was taken into account for higher relative humidity values (70% at 25 degrees C and 60% at 50 degrees C) that is related to the mechanism of water interaction with the sample surface. The dielectric constant and loss tangent decreased with increase in frequency in accordance with the Maxwell-Wagner type interfacial polarization mechanism and also increased with increase in relative humidity.
PB  - Springer, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - Influence of humidity on complex impedance and dielectric properties of iron manganite (FeMnO3)
EP  - 12405
IS  - 13
SP  - 12399
VL  - 30
DO  - 10.1007/s10854-019-01598-1
ER  - 

@article{
author = "Nikolić, Maria Vesna and Luković, Miloljub and Labus, Nebojša J.",
year = "2019",
abstract = "Bulk samples of iron manganite with a cubic Ia3 lt mml:mo stretchy="false"> lt overbar> lt /mml:mover> crystal structure were obtained by solid state synthesis (combination of milling and calcination) of starting hematite (Fe2O3) and manganese carbonate (MnCO3) powders followed by sintering green samples at 1000 degrees C for 4h. Structural characterization performed by XRD and SEM analysis confirmed the formation of iron manganite in the form of a porous network of grains and pores with average particle size of 530 and 430nm, respectively. The influence of humidity on complex impedance and dielectric properties was monitored in the relative humidity range 30-90% in a climatic chamber in the frequency range 42Hz-1MHz at working temperatures of 25 and 50 degrees C. At the lowest frequency of 42Hz the impedance reduced with relative humidity from 57.9 (RH 30%) to 3.21M ohm (RH 90%) at 25 degrees C, and from 23.3 (RH 30%) to 1.3M ohm (RH 90%) at 50 degrees C that is approximately 20 times. Analysis of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The influence of grains (bulk) was taken into account for higher relative humidity values (70% at 25 degrees C and 60% at 50 degrees C) that is related to the mechanism of water interaction with the sample surface. The dielectric constant and loss tangent decreased with increase in frequency in accordance with the Maxwell-Wagner type interfacial polarization mechanism and also increased with increase in relative humidity.",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "Influence of humidity on complex impedance and dielectric properties of iron manganite (FeMnO3)",
pages = "12405-12399",
number = "13",
volume = "30",
doi = "10.1007/s10854-019-01598-1"
}

Nikolić, M. V., Luković, M.,& Labus, N. J.. (2019). Influence of humidity on complex impedance and dielectric properties of iron manganite (FeMnO3). in Journal of Materials Science-Materials in Electronics
Springer, Dordrecht., 30(13), 12399-12405.
https://doi.org/10.1007/s10854-019-01598-1

Nikolić MV, Luković M, Labus NJ. Influence of humidity on complex impedance and dielectric properties of iron manganite (FeMnO3). in Journal of Materials Science-Materials in Electronics. 2019;30(13):12399-12405.
doi:10.1007/s10854-019-01598-1 .

Nikolić, Maria Vesna, Luković, Miloljub, Labus, Nebojša J., "Influence of humidity on complex impedance and dielectric properties of iron manganite (FeMnO3)" in Journal of Materials Science-Materials in Electronics, 30, no. 13 (2019):12399-12405,
https://doi.org/10.1007/s10854-019-01598-1 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Z
AU  - Luković, Miloljub
AU  - Pavlović, Vera P.
AU  - Vujančević, Jelena
AU  - Radovanović, Milan
AU  - Krstić, Jugoslav B.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1553
AB  - Pseudobrookite based nanopowder was obtained by solid state synthesis of starting hematite and anatase nanopowders in the weight ratio 55:45. Structural and morphological properties were analyzed using X-ray diffraction (XRD), BET, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV/Vis diffuse reflectance spectroscopy, Field emission scanning electron microscopy (FESEM) and Transmission electron microscopy (TEM) confirming the formation of nanocrystalline pseudobrookite. The obtained powder was mixed with a binder (ethyl cellulose), dispersant (α-terpinol) and adhesion agents (acetic acid and distilled water) to obtain a thick film paste. It was screen printed on alumina substrate with interdigitated PdAg electrodes and fired at 600 °C for 30 min. Formation of a porous nanocrystalline thick film structure was shown using Scanning electron microscopy (SEM), while Hall measurements enabled determination of carrier mobility. Change of impedance response in the frequency range 42 Hz–1 MHz with humidity was analyzed at room temperature (25 °C) and 50 °C in the relative humidity range 30–90% and 40–90%, respectively. At 42 Hz, and room temperature the impedance reduced ∼28 times, while at 50 °C it reduced ∼147 times in the relative humidity range 40–90%. The sensor showed rapid response (16 s) and relatively low hysteresis (8.39% at 25 °C and 2.64% at 50 °C) showing that this is a promising material for application in humidity sensing.
PB  - Elsevier
T2  - Sensors and Actuators B: Chemical
T1  - Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films
EP  - 664
SP  - 654
VL  - 277
DO  - 10.1016/j.snb.2018.09.063
ER  - 

@article{
author = "Nikolić, Maria Vesna and Vasiljević, Zorka Z and Luković, Miloljub and Pavlović, Vera P. and Vujančević, Jelena and Radovanović, Milan and Krstić, Jugoslav B. and Vlahović, Branislav and Pavlović, Vladimir B",
year = "2018",
abstract = "Pseudobrookite based nanopowder was obtained by solid state synthesis of starting hematite and anatase nanopowders in the weight ratio 55:45. Structural and morphological properties were analyzed using X-ray diffraction (XRD), BET, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV/Vis diffuse reflectance spectroscopy, Field emission scanning electron microscopy (FESEM) and Transmission electron microscopy (TEM) confirming the formation of nanocrystalline pseudobrookite. The obtained powder was mixed with a binder (ethyl cellulose), dispersant (α-terpinol) and adhesion agents (acetic acid and distilled water) to obtain a thick film paste. It was screen printed on alumina substrate with interdigitated PdAg electrodes and fired at 600 °C for 30 min. Formation of a porous nanocrystalline thick film structure was shown using Scanning electron microscopy (SEM), while Hall measurements enabled determination of carrier mobility. Change of impedance response in the frequency range 42 Hz–1 MHz with humidity was analyzed at room temperature (25 °C) and 50 °C in the relative humidity range 30–90% and 40–90%, respectively. At 42 Hz, and room temperature the impedance reduced ∼28 times, while at 50 °C it reduced ∼147 times in the relative humidity range 40–90%. The sensor showed rapid response (16 s) and relatively low hysteresis (8.39% at 25 °C and 2.64% at 50 °C) showing that this is a promising material for application in humidity sensing.",
publisher = "Elsevier",
journal = "Sensors and Actuators B: Chemical",
title = "Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films",
pages = "664-654",
volume = "277",
doi = "10.1016/j.snb.2018.09.063"
}

Nikolić, M. V., Vasiljević, Z. Z., Luković, M., Pavlović, V. P., Vujančević, J., Radovanović, M., Krstić, J. B., Vlahović, B.,& Pavlović, V. B.. (2018). Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films. in Sensors and Actuators B: Chemical
Elsevier., 277, 654-664.
https://doi.org/10.1016/j.snb.2018.09.063

Nikolić MV, Vasiljević ZZ, Luković M, Pavlović VP, Vujančević J, Radovanović M, Krstić JB, Vlahović B, Pavlović VB. Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films. in Sensors and Actuators B: Chemical. 2018;277:654-664.
doi:10.1016/j.snb.2018.09.063 .

Nikolić, Maria Vesna, Vasiljević, Zorka Z, Luković, Miloljub, Pavlović, Vera P., Vujančević, Jelena, Radovanović, Milan, Krstić, Jugoslav B., Vlahović, Branislav, Pavlović, Vladimir B, "Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films" in Sensors and Actuators B: Chemical, 277 (2018):654-664,
https://doi.org/10.1016/j.snb.2018.09.063 . .

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub
AU  - Vasiljević, Zorka Z
AU  - Vujančević, Jelena
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1182
AB  - Pseudobrookite nanocrystalline thick films were screen printed on alumina substrate with small interdigitated PdAg electrodes (width 6 mm, length 12 mm, electrode spacing 0.2 mm) and fired at 600 degrees C for 30 minutes. Scanning electron microscopy (SEM) of the thick film surface confirmed the formation of a porous structure consisting of agglomerated nanocrystalline grains of pseudobrookite. Impedance response of pseudobrookite thick film samples was measured in a humidity chamber at operating temperatures of 25 and 50 degrees C in the relative humidity (RH) range 40-90% and frequency range 42 Hz-1 MHz. At the lowest frequency of 42 Hz at 25 degrees C the impedance reduced. 7 times (from 35.74 MO for RH 40% to 4.91 MO for RH 90%) and at 50 degrees C. 33 times (from 30.98 MO for RH 40% to 0.944 MO for RH 90%). Low hysteresis (1.82 and 3.65%) was obtained at 25 and 50 degrees C, respectively. Complex impedance was analyzed using an equivalent circuit consisting of parallel impedance and constant phase (CPE) element showing the dominant influence of grain boundaries.
PB  - IEEE Computer Society
C3  - Proceedings of the International Spring Seminar on Electronics Technology
T1  - Application of Nanocrystalline Pseudobrookite (Fe2TiO5) Thick Films for Humidity Sensing
VL  - 2018-May
DO  - 10.1109/ISSE.2018.8443672
ER  - 

@conference{
author = "Nikolić, Maria Vesna and Luković, Miloljub and Vasiljević, Zorka Z and Vujančević, Jelena",
year = "2018",
abstract = "Pseudobrookite nanocrystalline thick films were screen printed on alumina substrate with small interdigitated PdAg electrodes (width 6 mm, length 12 mm, electrode spacing 0.2 mm) and fired at 600 degrees C for 30 minutes. Scanning electron microscopy (SEM) of the thick film surface confirmed the formation of a porous structure consisting of agglomerated nanocrystalline grains of pseudobrookite. Impedance response of pseudobrookite thick film samples was measured in a humidity chamber at operating temperatures of 25 and 50 degrees C in the relative humidity (RH) range 40-90% and frequency range 42 Hz-1 MHz. At the lowest frequency of 42 Hz at 25 degrees C the impedance reduced. 7 times (from 35.74 MO for RH 40% to 4.91 MO for RH 90%) and at 50 degrees C. 33 times (from 30.98 MO for RH 40% to 0.944 MO for RH 90%). Low hysteresis (1.82 and 3.65%) was obtained at 25 and 50 degrees C, respectively. Complex impedance was analyzed using an equivalent circuit consisting of parallel impedance and constant phase (CPE) element showing the dominant influence of grain boundaries.",
publisher = "IEEE Computer Society",
journal = "Proceedings of the International Spring Seminar on Electronics Technology",
title = "Application of Nanocrystalline Pseudobrookite (Fe2TiO5) Thick Films for Humidity Sensing",
volume = "2018-May",
doi = "10.1109/ISSE.2018.8443672"
}

Nikolić, M. V., Luković, M., Vasiljević, Z. Z.,& Vujančević, J.. (2018). Application of Nanocrystalline Pseudobrookite (Fe2TiO5) Thick Films for Humidity Sensing. in Proceedings of the International Spring Seminar on Electronics Technology
IEEE Computer Society., 2018-May.
https://doi.org/10.1109/ISSE.2018.8443672

Nikolić MV, Luković M, Vasiljević ZZ, Vujančević J. Application of Nanocrystalline Pseudobrookite (Fe2TiO5) Thick Films for Humidity Sensing. in Proceedings of the International Spring Seminar on Electronics Technology. 2018;2018-May.
doi:10.1109/ISSE.2018.8443672 .

Nikolić, Maria Vesna, Luković, Miloljub, Vasiljević, Zorka Z, Vujančević, Jelena, "Application of Nanocrystalline Pseudobrookite (Fe2TiO5) Thick Films for Humidity Sensing" in Proceedings of the International Spring Seminar on Electronics Technology, 2018-May (2018),
https://doi.org/10.1109/ISSE.2018.8443672 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub
AU  - Vasiljević, Zorka Z
AU  - Labus, Nebojša J.
AU  - Aleksić, Obrad
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1144
AB  - Bulk samples of pseudobrookite with an orthorhombic crystal structure were prepared by sintering a mixture of starting hematite and anatase nano powders in the weight ratio 60:40 at three different sintering temperatures (950, 1050 and 1150 degrees C) resulting in different microstructures determined by SEM analysis. Humidity sensing properties of pseudobrookite were investigated by measuring changes in electrical properties at operating temperatures of 20, 40 and 60 degrees C in the frequency range 100 Hz-100 kHz in the relative humidity range 30-90% in a climatic chamber. At 100 Hz, and 20 degrees C the impedance of pseudobrookite sintered at 1150 degrees C reduced over 5 times in the humidity range 40-90%, and 7 times at 60 degrees C for pseudobrookite sintered at 950 degrees C. Detailed analysis of dielectric properties showed that the dielectric constant increased noticeably with increase in humidity at low frequencies. Electrical conductivity change with frequency followed the Jonscher power law, and increased with increase in relative humidity. The determined frequency constant reduced with increase in sample temperature and increase in relative humidity. The conduction mechanism can be explained using the correlated barrier hopping model. Analysis of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. Low hysteresis (3.6 and 2.99%) was obtained in the 40-90% humidity range at room temperature (25 degrees C) for pseudobrookite sintered at 950 and 1150 degrees C.
PB  - Springer, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - Humidity sensing potential of Fe2TiO5-pseudobrookite
EP  - 9238
IS  - 11
SP  - 9227
VL  - 29
DO  - 10.1007/s10854-018-8951-1
ER  - 

@article{
author = "Nikolić, Maria Vesna and Luković, Miloljub and Vasiljević, Zorka Z and Labus, Nebojša J. and Aleksić, Obrad",
year = "2018",
abstract = "Bulk samples of pseudobrookite with an orthorhombic crystal structure were prepared by sintering a mixture of starting hematite and anatase nano powders in the weight ratio 60:40 at three different sintering temperatures (950, 1050 and 1150 degrees C) resulting in different microstructures determined by SEM analysis. Humidity sensing properties of pseudobrookite were investigated by measuring changes in electrical properties at operating temperatures of 20, 40 and 60 degrees C in the frequency range 100 Hz-100 kHz in the relative humidity range 30-90% in a climatic chamber. At 100 Hz, and 20 degrees C the impedance of pseudobrookite sintered at 1150 degrees C reduced over 5 times in the humidity range 40-90%, and 7 times at 60 degrees C for pseudobrookite sintered at 950 degrees C. Detailed analysis of dielectric properties showed that the dielectric constant increased noticeably with increase in humidity at low frequencies. Electrical conductivity change with frequency followed the Jonscher power law, and increased with increase in relative humidity. The determined frequency constant reduced with increase in sample temperature and increase in relative humidity. The conduction mechanism can be explained using the correlated barrier hopping model. Analysis of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. Low hysteresis (3.6 and 2.99%) was obtained in the 40-90% humidity range at room temperature (25 degrees C) for pseudobrookite sintered at 950 and 1150 degrees C.",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "Humidity sensing potential of Fe2TiO5-pseudobrookite",
pages = "9238-9227",
number = "11",
volume = "29",
doi = "10.1007/s10854-018-8951-1"
}

Nikolić, M. V., Luković, M., Vasiljević, Z. Z., Labus, N. J.,& Aleksić, O.. (2018). Humidity sensing potential of Fe2TiO5-pseudobrookite. in Journal of Materials Science-Materials in Electronics
Springer, Dordrecht., 29(11), 9227-9238.
https://doi.org/10.1007/s10854-018-8951-1

Nikolić MV, Luković M, Vasiljević ZZ, Labus NJ, Aleksić O. Humidity sensing potential of Fe2TiO5-pseudobrookite. in Journal of Materials Science-Materials in Electronics. 2018;29(11):9227-9238.
doi:10.1007/s10854-018-8951-1 .

Nikolić, Maria Vesna, Luković, Miloljub, Vasiljević, Zorka Z, Labus, Nebojša J., Aleksić, Obrad, "Humidity sensing potential of Fe2TiO5-pseudobrookite" in Journal of Materials Science-Materials in Electronics, 29, no. 11 (2018):9227-9238,
https://doi.org/10.1007/s10854-018-8951-1 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Z
AU  - Luković, Miloljub
AU  - Pavlović, Vera P.
AU  - Vujančević, Jelena
AU  - Radovanović, Milan
AU  - Krstić, Jugoslav B.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1112
AB  - Pseudobrookite based nanopowder was obtained by solid state synthesis of starting hematite and anatase nanopowders in the weight ratio 55:45. Structural and morphological properties were analyzed using X-ray diffraction (XRD), BET, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV/Vis diffuse reflectance spectroscopy, Field emission scanning electron microscopy (FESEM) and Transmission electron microscopy (TEM) confirming the formation of nanocrystalline pseudobrookite. The obtained powder was mixed with a binder (ethyl cellulose), dispersant (alpha-terpinol) and adhesion agents (acetic acid and distilled water) to obtain a thick film paste. It was screen printed on alumina substrate with interdigitated PdAg electrodes and fired at 600 degrees C for 30 min. Formation of a porous nanocrystalline thick film structure was shown using Scanning electron microscopy (SEM), while Hall measurements enabled determination of carrier mobility. Change of impedance response in the frequency range 42 Hz-1 MHz with humidity was analyzed at room temperature (25 degrees C) and 50 degrees C in the relative humidity range 30-90% and 40-90%, respectively. At 42 Hz, and room temperature the impedance reduced similar to 28 times, while at 50 degrees C it reduced similar to 147 times in the relative humidity range 40-90%. The sensor showed rapid response (16 s) and relatively low hysteresis (8.39% at 25 degrees C and 2.64% at 50 degrees C) showing that this is a promising material for application in humidity sensing.
PB  - Elsevier Science Sa, Lausanne
T2  - Sensors and Actuators B-Chemical
T1  - Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films
EP  - 664
SP  - 654
VL  - 277
DO  - 10.1016/j.snb.2018.09.063
ER  - 

@article{
author = "Nikolić, Maria Vesna and Vasiljević, Zorka Z and Luković, Miloljub and Pavlović, Vera P. and Vujančević, Jelena and Radovanović, Milan and Krstić, Jugoslav B. and Vlahović, Branislav and Pavlović, Vladimir B",
year = "2018",
abstract = "Pseudobrookite based nanopowder was obtained by solid state synthesis of starting hematite and anatase nanopowders in the weight ratio 55:45. Structural and morphological properties were analyzed using X-ray diffraction (XRD), BET, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV/Vis diffuse reflectance spectroscopy, Field emission scanning electron microscopy (FESEM) and Transmission electron microscopy (TEM) confirming the formation of nanocrystalline pseudobrookite. The obtained powder was mixed with a binder (ethyl cellulose), dispersant (alpha-terpinol) and adhesion agents (acetic acid and distilled water) to obtain a thick film paste. It was screen printed on alumina substrate with interdigitated PdAg electrodes and fired at 600 degrees C for 30 min. Formation of a porous nanocrystalline thick film structure was shown using Scanning electron microscopy (SEM), while Hall measurements enabled determination of carrier mobility. Change of impedance response in the frequency range 42 Hz-1 MHz with humidity was analyzed at room temperature (25 degrees C) and 50 degrees C in the relative humidity range 30-90% and 40-90%, respectively. At 42 Hz, and room temperature the impedance reduced similar to 28 times, while at 50 degrees C it reduced similar to 147 times in the relative humidity range 40-90%. The sensor showed rapid response (16 s) and relatively low hysteresis (8.39% at 25 degrees C and 2.64% at 50 degrees C) showing that this is a promising material for application in humidity sensing.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Sensors and Actuators B-Chemical",
title = "Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films",
pages = "664-654",
volume = "277",
doi = "10.1016/j.snb.2018.09.063"
}

Nikolić, M. V., Vasiljević, Z. Z., Luković, M., Pavlović, V. P., Vujančević, J., Radovanović, M., Krstić, J. B., Vlahović, B.,& Pavlović, V. B.. (2018). Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films. in Sensors and Actuators B-Chemical
Elsevier Science Sa, Lausanne., 277, 654-664.
https://doi.org/10.1016/j.snb.2018.09.063

Nikolić MV, Vasiljević ZZ, Luković M, Pavlović VP, Vujančević J, Radovanović M, Krstić JB, Vlahović B, Pavlović VB. Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films. in Sensors and Actuators B-Chemical. 2018;277:654-664.
doi:10.1016/j.snb.2018.09.063 .

Nikolić, Maria Vesna, Vasiljević, Zorka Z, Luković, Miloljub, Pavlović, Vera P., Vujančević, Jelena, Radovanović, Milan, Krstić, Jugoslav B., Vlahović, Branislav, Pavlović, Vladimir B, "Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films" in Sensors and Actuators B-Chemical, 277 (2018):654-664,
https://doi.org/10.1016/j.snb.2018.09.063 . .

TY  - JOUR
AU  - Aleksić, Stanko O.
AU  - Mitrović, Nebojša S.
AU  - Luković, Miloljub
AU  - Veljović-Jovanović, Sonja
AU  - Luković, Snežana
AU  - Nikolić, Maria Vesna
AU  - Aleksić, Obrad
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1168
AB  - A new ground temperature profile sensor comprising of a row of thermistors enables a large number of equidistantly arranged measuring points. The row of thermistors was formed using a group of negative temperature coefficient thick film segmented thermistors connected in series. After that calibration of the DC thermistor resistance R was performed at room temperature and the sensor was placed in a hole drilled on the lawn. DC resistances R of the row of thermistors were measured versus depth z as a parameter and converted to actual temperature T(z) in the ground using the Steinhart-Hart equation. The temperature profile of the ground depending on deepness z and time t as a function T(t, z) was measured on different days during one year in the early morning and in the afternoon. The temperature at the ground surface was compared with the temperature of the deepest sensor point in the ground. Thermal diffusivity D of the ground was determined using measured data T(t, z) in the periods of steady ground temperatures. The new ground temperature profile sensor was realized to investigate the correlation between air and ground temperature, observation of ground temperature profile changes and heat exchange (heat transfer, diffusion, gradient, and heat flow direction) through the ground top layer and finally humidity estimation versus deepness.
PB  - IEEE-Inst Electrical Electronics Engineers Inc, Piscataway
T2  - IEEE Sensors Journal
T1  - A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications
EP  - 4421
IS  - 11
SP  - 4414
VL  - 18
DO  - 10.1109/JSEN.2018.2820123
ER  - 

@article{
author = "Aleksić, Stanko O. and Mitrović, Nebojša S. and Luković, Miloljub and Veljović-Jovanović, Sonja and Luković, Snežana and Nikolić, Maria Vesna and Aleksić, Obrad",
year = "2018",
abstract = "A new ground temperature profile sensor comprising of a row of thermistors enables a large number of equidistantly arranged measuring points. The row of thermistors was formed using a group of negative temperature coefficient thick film segmented thermistors connected in series. After that calibration of the DC thermistor resistance R was performed at room temperature and the sensor was placed in a hole drilled on the lawn. DC resistances R of the row of thermistors were measured versus depth z as a parameter and converted to actual temperature T(z) in the ground using the Steinhart-Hart equation. The temperature profile of the ground depending on deepness z and time t as a function T(t, z) was measured on different days during one year in the early morning and in the afternoon. The temperature at the ground surface was compared with the temperature of the deepest sensor point in the ground. Thermal diffusivity D of the ground was determined using measured data T(t, z) in the periods of steady ground temperatures. The new ground temperature profile sensor was realized to investigate the correlation between air and ground temperature, observation of ground temperature profile changes and heat exchange (heat transfer, diffusion, gradient, and heat flow direction) through the ground top layer and finally humidity estimation versus deepness.",
publisher = "IEEE-Inst Electrical Electronics Engineers Inc, Piscataway",
journal = "IEEE Sensors Journal",
title = "A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications",
pages = "4421-4414",
number = "11",
volume = "18",
doi = "10.1109/JSEN.2018.2820123"
}

Aleksić, S. O., Mitrović, N. S., Luković, M., Veljović-Jovanović, S., Luković, S., Nikolić, M. V.,& Aleksić, O.. (2018). A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications. in IEEE Sensors Journal
IEEE-Inst Electrical Electronics Engineers Inc, Piscataway., 18(11), 4414-4421.
https://doi.org/10.1109/JSEN.2018.2820123

Aleksić SO, Mitrović NS, Luković M, Veljović-Jovanović S, Luković S, Nikolić MV, Aleksić O. A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications. in IEEE Sensors Journal. 2018;18(11):4414-4421.
doi:10.1109/JSEN.2018.2820123 .

Aleksić, Stanko O., Mitrović, Nebojša S., Luković, Miloljub, Veljović-Jovanović, Sonja, Luković, Snežana, Nikolić, Maria Vesna, Aleksić, Obrad, "A Ground Temperature Profile Sensor Based on NTC Thick Film Segmented Thermistors: Main Properties and Applications" in IEEE Sensors Journal, 18, no. 11 (2018):4414-4421,
https://doi.org/10.1109/JSEN.2018.2820123 . .

TY  - CONF
AU  - Luković, Miloljub
AU  - Nikolić, Maria Vesna
AU  - Balaz, Nelu
AU  - Milutinov, Miodrag
AU  - Vasiljević, Zorka Z
AU  - Labus, Nebojša J.
AU  - Aleksić, Obrad S.
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/15430
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1636
AB  - Starting hematite (Fe2O3), zinc oxide (ZnO) and manganese carbonate (MnCO3) powders were homogenized in a planetary ball mill in stainless steel bowls with stainless steel balls for 15 min, calcined in air at 1000 C for 2 h, milled in a planetary ball mill for 30 minutes, followed by 4 h in an aghate mill, sieved through a 325 mesh to form four starting powders: MnFe2O4, ZnFe2O4, Mn0.5Zn0.5Fe2O4 and a two-phase mixture of zinc and manganese ferrite. Structural properties of the obtained powders were analyzed using XRD, SEM and EDS. Electrical properties of disk shaped samples were measured at room temperature on an impedance analyzer in the frequency range 100 to 40 MHz, enabling determination and comparison of dielectric permittivity and complex impedance. Complex relative permeability of toroid shaped samples was measured on an impedance analyzer in the frequency range from 1 MHz to 500 MHz.
PB  - Belgrade : Institute for Multidisciplinary Research of the University of Belgrade
C3  - Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
T1  - Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite
EP  - 102
SP  - 102
UR  - https://hdl.handle.net/21.15107/rcub_dais_15430
ER  - 

@conference{
author = "Luković, Miloljub and Nikolić, Maria Vesna and Balaz, Nelu and Milutinov, Miodrag and Vasiljević, Zorka Z and Labus, Nebojša J. and Aleksić, Obrad S.",
year = "2017",
abstract = "Starting hematite (Fe2O3), zinc oxide (ZnO) and manganese carbonate (MnCO3) powders were homogenized in a planetary ball mill in stainless steel bowls with stainless steel balls for 15 min, calcined in air at 1000 C for 2 h, milled in a planetary ball mill for 30 minutes, followed by 4 h in an aghate mill, sieved through a 325 mesh to form four starting powders: MnFe2O4, ZnFe2O4, Mn0.5Zn0.5Fe2O4 and a two-phase mixture of zinc and manganese ferrite. Structural properties of the obtained powders were analyzed using XRD, SEM and EDS. Electrical properties of disk shaped samples were measured at room temperature on an impedance analyzer in the frequency range 100 to 40 MHz, enabling determination and comparison of dielectric permittivity and complex impedance. Complex relative permeability of toroid shaped samples was measured on an impedance analyzer in the frequency range from 1 MHz to 500 MHz.",
publisher = "Belgrade : Institute for Multidisciplinary Research of the University of Belgrade",
journal = "Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia",
title = "Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite",
pages = "102-102",
url = "https://hdl.handle.net/21.15107/rcub_dais_15430"
}

Luković, M., Nikolić, M. V., Balaz, N., Milutinov, M., Vasiljević, Z. Z., Labus, N. J.,& Aleksić, O. S.. (2017). Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research of the University of Belgrade., 102-102.
https://hdl.handle.net/21.15107/rcub_dais_15430

Luković M, Nikolić MV, Balaz N, Milutinov M, Vasiljević ZZ, Labus NJ, Aleksić OS. Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia. 2017;:102-102.
https://hdl.handle.net/21.15107/rcub_dais_15430 .

Luković, Miloljub, Nikolić, Maria Vesna, Balaz, Nelu, Milutinov, Miodrag, Vasiljević, Zorka Z, Labus, Nebojša J., Aleksić, Obrad S., "Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite" in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia (2017):102-102,
https://hdl.handle.net/21.15107/rcub_dais_15430 .

TY  - JOUR
AU  - Labus, Nebojša J.
AU  - Vasiljević, Zorka Z
AU  - Aleksić, Obrad
AU  - Luković, Miloljub
AU  - Marković, Smilja
AU  - Pavlović, Vladimir B
AU  - Mentus, Slavko
AU  - Nikolić, Maria Vesna
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1102
AB  - Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was to observe intensive milling influences on oxidation and reduction processes that will happen during subsequent heating. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in an air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized micro structurally with SEM on a fresh breakage. Obtained differential TGA diagrams suggest intensive changes during prolonged milling of the oxidation kinetics on heating. Ferrite powders changed with milling as well as with second run heating were characterized to enable determination of the potentially best ratio of milling and heating to be applied to obtain the desired microstructure.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment
EP  - 467
IS  - 4
SP  - 455
VL  - 49
DO  - 10.2298/SOS1704455L
ER  - 

@article{
author = "Labus, Nebojša J. and Vasiljević, Zorka Z and Aleksić, Obrad and Luković, Miloljub and Marković, Smilja and Pavlović, Vladimir B and Mentus, Slavko and Nikolić, Maria Vesna",
year = "2017",
abstract = "Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was to observe intensive milling influences on oxidation and reduction processes that will happen during subsequent heating. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in an air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized micro structurally with SEM on a fresh breakage. Obtained differential TGA diagrams suggest intensive changes during prolonged milling of the oxidation kinetics on heating. Ferrite powders changed with milling as well as with second run heating were characterized to enable determination of the potentially best ratio of milling and heating to be applied to obtain the desired microstructure.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment",
pages = "467-455",
number = "4",
volume = "49",
doi = "10.2298/SOS1704455L"
}

Labus, N. J., Vasiljević, Z. Z., Aleksić, O., Luković, M., Marković, S., Pavlović, V. B., Mentus, S.,& Nikolić, M. V.. (2017). Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 49(4), 455-467.
https://doi.org/10.2298/SOS1704455L

Labus NJ, Vasiljević ZZ, Aleksić O, Luković M, Marković S, Pavlović VB, Mentus S, Nikolić MV. Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment. in Science of Sintering. 2017;49(4):455-467.
doi:10.2298/SOS1704455L .

Labus, Nebojša J., Vasiljević, Zorka Z, Aleksić, Obrad, Luković, Miloljub, Marković, Smilja, Pavlović, Vladimir B, Mentus, Slavko, Nikolić, Maria Vesna, "Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment" in Science of Sintering, 49, no. 4 (2017):455-467,
https://doi.org/10.2298/SOS1704455L . .

TY  - JOUR
AU  - Aleksić, Obrad
AU  - Vasiljević, Zorka Z
AU  - Vujković, Milica
AU  - Nikolic, Marko
AU  - Labus, Nebojša J.
AU  - Luković, Miloljub
AU  - Nikolić, Maria Vesna
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1098
AB  - Nanostructured Fe2TiO5 thick films were deposited on fluorine-doped tin oxide glass substrate using screen printing technology. Starting hematite and anatase nanopowders were mixed in molar ratios 1:1 and 1:1.5 and calcined in air at 900A degrees C for 2 h to form pseudobrookite, Fe2TiO5. Functional powders and sintered thick films were analyzed by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy and transmission electron microscopy. UV-Vis analysis enabled determination of the band gap. Separation and transfer efficiency of photogenerated charge carriers was confirmed by the photoluminescence and electrochemical impedance spectra. Even though a slightly high onset oxygen evolution potential of photoexcited film electrode samples in NaOH was obtained, photocurrent densities were high, especially in the presence of H2O2 (similar to 12 mA cm(-2) at 1.7 V RHE). This work shows promise for practical application due to favorable band positions of pseudobrookite and low-cost screen printing technology.
PB  - Springer, New York
T2  - Journal of Materials Science
T1  - Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior
EP  - 5953
IS  - 10
SP  - 5938
VL  - 52
DO  - 10.1007/s10853-017-0830-2
ER  - 

@article{
author = "Aleksić, Obrad and Vasiljević, Zorka Z and Vujković, Milica and Nikolic, Marko and Labus, Nebojša J. and Luković, Miloljub and Nikolić, Maria Vesna",
year = "2017",
abstract = "Nanostructured Fe2TiO5 thick films were deposited on fluorine-doped tin oxide glass substrate using screen printing technology. Starting hematite and anatase nanopowders were mixed in molar ratios 1:1 and 1:1.5 and calcined in air at 900A degrees C for 2 h to form pseudobrookite, Fe2TiO5. Functional powders and sintered thick films were analyzed by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy and transmission electron microscopy. UV-Vis analysis enabled determination of the band gap. Separation and transfer efficiency of photogenerated charge carriers was confirmed by the photoluminescence and electrochemical impedance spectra. Even though a slightly high onset oxygen evolution potential of photoexcited film electrode samples in NaOH was obtained, photocurrent densities were high, especially in the presence of H2O2 (similar to 12 mA cm(-2) at 1.7 V RHE). This work shows promise for practical application due to favorable band positions of pseudobrookite and low-cost screen printing technology.",
publisher = "Springer, New York",
journal = "Journal of Materials Science",
title = "Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior",
pages = "5953-5938",
number = "10",
volume = "52",
doi = "10.1007/s10853-017-0830-2"
}

Aleksić, O., Vasiljević, Z. Z., Vujković, M., Nikolic, M., Labus, N. J., Luković, M.,& Nikolić, M. V.. (2017). Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior. in Journal of Materials Science
Springer, New York., 52(10), 5938-5953.
https://doi.org/10.1007/s10853-017-0830-2

Aleksić O, Vasiljević ZZ, Vujković M, Nikolic M, Labus NJ, Luković M, Nikolić MV. Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior. in Journal of Materials Science. 2017;52(10):5938-5953.
doi:10.1007/s10853-017-0830-2 .

Aleksić, Obrad, Vasiljević, Zorka Z, Vujković, Milica, Nikolic, Marko, Labus, Nebojša J., Luković, Miloljub, Nikolić, Maria Vesna, "Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior" in Journal of Materials Science, 52, no. 10 (2017):5938-5953,
https://doi.org/10.1007/s10853-017-0830-2 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Sekulic, Dalibor L
AU  - Vasiljević, Zorka Z
AU  - Luković, Miloljub
AU  - Pavlović, Vladimir B
AU  - Aleksić, Obrad
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1097
AB  - In this work we have investigated changes in dielectric properties, electrical conductivity and complex impedance of Fe2TiO5 nanopowder compacts and bulk samples as a function of elevated temperature (room to 423 K compacts, to 443 K bulk samples), frequency (100 Hz-1 MHz) and composition (starting molar ratio of Fe2O3 and TiO2 1:1-PSB11 and 1:1.5-PSB115). XRD, SEM and TEM analysis of PSB11 and PSB115 powders obtained by a simple solid state process from starting hematite and anatase nanopowders confirmed the formation of nanostructured orthorhombic pseudobrookite with small amounts of excess hematite and rutile. The dielectric constant decreased with frequency and temperature for both compacts and bulk samples. Higher values were determined for bulk samples also reflecting the influence of sample composition. Change in the dielectric loss also reflected the influence of sample composition showing one maximum at high frequencies for compacts, and two maxima at room temperature for bulk samples. Complex impedance was analyzed using equivalent circuits and showed in the case of compacts the influence of both grain and grain boundary components, while in the case of bulk samples the dominant influence of grain boundaries. The temperature dependence of the determined grain and grain boundary resistance for compacts and grain boundary resistance for bulk samples was analyzed using the adiabatic small polaron hopping model enabling determination of activation energies for conduction, while the temperature dependence of relaxation times enabled determination of activation energies for relaxation. Changes in electrical conductivity for compacts and bulk samples followed Jonscher's power law. The change of the determined frequency constant with temperature showed that at elevated temperatures the quantum mechanical-tunneling model for the case of small polaron hopping explains the conduction mechanism occurring in both compacts and bulk samples.
PB  - Springer, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures
EP  - 4806
IS  - 6
SP  - 4796
VL  - 28
DO  - 10.1007/s10854-016-6125-6
ER  - 

@article{
author = "Nikolić, Maria Vesna and Sekulic, Dalibor L and Vasiljević, Zorka Z and Luković, Miloljub and Pavlović, Vladimir B and Aleksić, Obrad",
year = "2017",
abstract = "In this work we have investigated changes in dielectric properties, electrical conductivity and complex impedance of Fe2TiO5 nanopowder compacts and bulk samples as a function of elevated temperature (room to 423 K compacts, to 443 K bulk samples), frequency (100 Hz-1 MHz) and composition (starting molar ratio of Fe2O3 and TiO2 1:1-PSB11 and 1:1.5-PSB115). XRD, SEM and TEM analysis of PSB11 and PSB115 powders obtained by a simple solid state process from starting hematite and anatase nanopowders confirmed the formation of nanostructured orthorhombic pseudobrookite with small amounts of excess hematite and rutile. The dielectric constant decreased with frequency and temperature for both compacts and bulk samples. Higher values were determined for bulk samples also reflecting the influence of sample composition. Change in the dielectric loss also reflected the influence of sample composition showing one maximum at high frequencies for compacts, and two maxima at room temperature for bulk samples. Complex impedance was analyzed using equivalent circuits and showed in the case of compacts the influence of both grain and grain boundary components, while in the case of bulk samples the dominant influence of grain boundaries. The temperature dependence of the determined grain and grain boundary resistance for compacts and grain boundary resistance for bulk samples was analyzed using the adiabatic small polaron hopping model enabling determination of activation energies for conduction, while the temperature dependence of relaxation times enabled determination of activation energies for relaxation. Changes in electrical conductivity for compacts and bulk samples followed Jonscher's power law. The change of the determined frequency constant with temperature showed that at elevated temperatures the quantum mechanical-tunneling model for the case of small polaron hopping explains the conduction mechanism occurring in both compacts and bulk samples.",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures",
pages = "4806-4796",
number = "6",
volume = "28",
doi = "10.1007/s10854-016-6125-6"
}

Nikolić, M. V., Sekulic, D. L., Vasiljević, Z. Z., Luković, M., Pavlović, V. B.,& Aleksić, O.. (2017). Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures. in Journal of Materials Science-Materials in Electronics
Springer, Dordrecht., 28(6), 4796-4806.
https://doi.org/10.1007/s10854-016-6125-6

Nikolić MV, Sekulic DL, Vasiljević ZZ, Luković M, Pavlović VB, Aleksić O. Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures. in Journal of Materials Science-Materials in Electronics. 2017;28(6):4796-4806.
doi:10.1007/s10854-016-6125-6 .

Nikolić, Maria Vesna, Sekulic, Dalibor L, Vasiljević, Zorka Z, Luković, Miloljub, Pavlović, Vladimir B, Aleksić, Obrad, "Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures" in Journal of Materials Science-Materials in Electronics, 28, no. 6 (2017):4796-4806,
https://doi.org/10.1007/s10854-016-6125-6 . .

TY  - CONF
AU  - Luković, Miloljub
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Z
AU  - Blaz, Nelu V.
AU  - Luković, Snežana
AU  - Aleksić, Obrad
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1073
AB  - We have investigated the impedance response of pseudobrookite thick films screen printed on alumina substrate in the temperature interval from room temperature to 350 degrees C in the frequency range 100 Hz - 1 MHz. Two thick film pastes were made containing starting hematite and anatase nanopowders (in the 1:1 and 1:1.33 molar ratio - containing excess anatase), glass fritt and organic vehicle. A sandwich PdAg electrode structure was obtained by first printing a PdAg electrode, followed by 3 layers of PSB paste and a PdAg electrode on top with a mesh structure. Each layer was sintered at 850 degrees C in a hybrid conveyor furnace. XRD analysis confirmed the formation of pseudobrookite with an orthorhombic crystal structure. SEM analysis of thick film surfaces and cross sections showed the formation of a porous structure with rod-shaped grains. The impedance response of pseudobrookite thick films, showed a decrease with the rise in sample temperature. It was analyzed using an equivalent circuit reflecting the dominant influence of grain boundaries.
PB  - IEEE Computer Society
C3  - Proceedings of the International Spring Seminar on Electronics Technology
T1  - Impedance Response of Pseudobrookite Thick Films with a Sandwich Configuration
DO  - 10.1109/ISSE.2017.8000886
ER  - 

@conference{
author = "Luković, Miloljub and Nikolić, Maria Vesna and Vasiljević, Zorka Z and Blaz, Nelu V. and Luković, Snežana and Aleksić, Obrad",
year = "2017",
abstract = "We have investigated the impedance response of pseudobrookite thick films screen printed on alumina substrate in the temperature interval from room temperature to 350 degrees C in the frequency range 100 Hz - 1 MHz. Two thick film pastes were made containing starting hematite and anatase nanopowders (in the 1:1 and 1:1.33 molar ratio - containing excess anatase), glass fritt and organic vehicle. A sandwich PdAg electrode structure was obtained by first printing a PdAg electrode, followed by 3 layers of PSB paste and a PdAg electrode on top with a mesh structure. Each layer was sintered at 850 degrees C in a hybrid conveyor furnace. XRD analysis confirmed the formation of pseudobrookite with an orthorhombic crystal structure. SEM analysis of thick film surfaces and cross sections showed the formation of a porous structure with rod-shaped grains. The impedance response of pseudobrookite thick films, showed a decrease with the rise in sample temperature. It was analyzed using an equivalent circuit reflecting the dominant influence of grain boundaries.",
publisher = "IEEE Computer Society",
journal = "Proceedings of the International Spring Seminar on Electronics Technology",
title = "Impedance Response of Pseudobrookite Thick Films with a Sandwich Configuration",
doi = "10.1109/ISSE.2017.8000886"
}

Luković, M., Nikolić, M. V., Vasiljević, Z. Z., Blaz, N. V., Luković, S.,& Aleksić, O.. (2017). Impedance Response of Pseudobrookite Thick Films with a Sandwich Configuration. in Proceedings of the International Spring Seminar on Electronics Technology
IEEE Computer Society..
https://doi.org/10.1109/ISSE.2017.8000886

Luković M, Nikolić MV, Vasiljević ZZ, Blaz NV, Luković S, Aleksić O. Impedance Response of Pseudobrookite Thick Films with a Sandwich Configuration. in Proceedings of the International Spring Seminar on Electronics Technology. 2017;.
doi:10.1109/ISSE.2017.8000886 .

Luković, Miloljub, Nikolić, Maria Vesna, Vasiljević, Zorka Z, Blaz, Nelu V., Luković, Snežana, Aleksić, Obrad, "Impedance Response of Pseudobrookite Thick Films with a Sandwich Configuration" in Proceedings of the International Spring Seminar on Electronics Technology (2017),
https://doi.org/10.1109/ISSE.2017.8000886 . .

TY  - CONF
AU  - Misković, G.
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub
AU  - Vasiljević, Zorka Z
AU  - Nicolics, Johann
AU  - Aleksić, Obrad
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1068
AB  - Pseudobrookite thick films were obtained by screen printing paste composed of a 1: 1.5 molar ratio mixture of starting nanopowders of hematite and anatase, glass frit and organic binder. The films were deposited on alumina substrates with interdigitated electrode geometry. Sintering at 850 degrees C resulted in the formation of pseudobrookite. X-Ray Diffraction (XRD) analysis showed pseudobrookite with a mixed orthorhombic and monoclinic structure and a small amount of excess rutile. Gas sensing measurements with low NO gas concentrations in air were performed using an in-house gas sensor testing setup in the temperature range 100300 degrees C. On the example of one particular gas concentration, results showed that pseudobrookite exhibited a distinct response to NO already at 150 degrees C that further improved with increased sample temperature.
PB  - IEEE Computer Society
C3  - Proceedings of the International Spring Seminar on Electronics Technology
T1  - Pseudobrookite thick films for potential application as low-temperature sensitive material in NO gas sensors
DO  - 10.1109/ISSE.2017.8000881
ER  - 

@conference{
author = "Misković, G. and Nikolić, Maria Vesna and Luković, Miloljub and Vasiljević, Zorka Z and Nicolics, Johann and Aleksić, Obrad",
year = "2017",
abstract = "Pseudobrookite thick films were obtained by screen printing paste composed of a 1: 1.5 molar ratio mixture of starting nanopowders of hematite and anatase, glass frit and organic binder. The films were deposited on alumina substrates with interdigitated electrode geometry. Sintering at 850 degrees C resulted in the formation of pseudobrookite. X-Ray Diffraction (XRD) analysis showed pseudobrookite with a mixed orthorhombic and monoclinic structure and a small amount of excess rutile. Gas sensing measurements with low NO gas concentrations in air were performed using an in-house gas sensor testing setup in the temperature range 100300 degrees C. On the example of one particular gas concentration, results showed that pseudobrookite exhibited a distinct response to NO already at 150 degrees C that further improved with increased sample temperature.",
publisher = "IEEE Computer Society",
journal = "Proceedings of the International Spring Seminar on Electronics Technology",
title = "Pseudobrookite thick films for potential application as low-temperature sensitive material in NO gas sensors",
doi = "10.1109/ISSE.2017.8000881"
}

Misković, G., Nikolić, M. V., Luković, M., Vasiljević, Z. Z., Nicolics, J.,& Aleksić, O.. (2017). Pseudobrookite thick films for potential application as low-temperature sensitive material in NO gas sensors. in Proceedings of the International Spring Seminar on Electronics Technology
IEEE Computer Society..
https://doi.org/10.1109/ISSE.2017.8000881

Misković G, Nikolić MV, Luković M, Vasiljević ZZ, Nicolics J, Aleksić O. Pseudobrookite thick films for potential application as low-temperature sensitive material in NO gas sensors. in Proceedings of the International Spring Seminar on Electronics Technology. 2017;.
doi:10.1109/ISSE.2017.8000881 .

Misković, G., Nikolić, Maria Vesna, Luković, Miloljub, Vasiljević, Zorka Z, Nicolics, Johann, Aleksić, Obrad, "Pseudobrookite thick films for potential application as low-temperature sensitive material in NO gas sensors" in Proceedings of the International Spring Seminar on Electronics Technology (2017),
https://doi.org/10.1109/ISSE.2017.8000881 . .

TY  - CONF
AU  - Misković, Goran
AU  - Aleksić, Obrad
AU  - Nikolić, Maria Vesna
AU  - Nicolics, Johann
AU  - Radosavljević, Goran
AU  - Vasiljević, Zorka Z
AU  - Luković, Miloljub
AU  - Smetana, Walter
PY  - 2016
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/966
AB  - This research is focused on structural and electrical characterisation of tin oxide (SnO2) applied as a thick film and investigation of its properties as gas sensitive material. Micron sized SnO2 powder was milled in an agate mill for six hours to fabricate SnO2 nanopowder, which was afterwards sieved by 325 mesh sieve and characterized by XRD and SEM. This powder was used as functional part in the production of thick film tin oxide paste containing a resin vehicle with 4 wt. % nanosize glass frits acting as permanent binder. The glass frits where additionally milled for twelve hours in the agate mills to nanosized powder and sieved by a 325 mesh sieve as well. The achieved thick film paste was screen printed on alumina and fired at 850 degrees C peak temperature for 10 minutes in air. After the sintering process, thick film samples where characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The reflectivity was measured on the same samples by UV-VIS spectrophotometer: the band gap was determined from the slope of reflectance. After that a matrix of different interdigitated electrode structure of PdAg paste was printed and sintered using the mentioned sintering conditions. The tin oxide thick film was printed over the interdigitated electrodes as a top layer and sintered again under the same conditions. The total electrical resistance was measured as a function of the electrode spacing and temperature. A negative temperature coefficient (NTC) was identified and measured in the range from room temperature (27 degrees C) to 180 degrees C in a climate chamber. Finally the samples were placed into a gas reactor with NOx and CO gas and the resistance was measured in the same temperature range (27 degrees C-200 degrees C).
PB  - IOP Publishing Ltd, Bristol
C3  - 5th International Conference on Materials and Applications for Sensors and Transducers (Ic-Mast2015)
T1  - Nanostructured SnO2 thick films for gas sensor application: analysis of structural and electronic properties
VL  - 108
DO  - 10.1088/1757-899X/108/1/012003
ER  - 

@conference{
author = "Misković, Goran and Aleksić, Obrad and Nikolić, Maria Vesna and Nicolics, Johann and Radosavljević, Goran and Vasiljević, Zorka Z and Luković, Miloljub and Smetana, Walter",
year = "2016",
abstract = "This research is focused on structural and electrical characterisation of tin oxide (SnO2) applied as a thick film and investigation of its properties as gas sensitive material. Micron sized SnO2 powder was milled in an agate mill for six hours to fabricate SnO2 nanopowder, which was afterwards sieved by 325 mesh sieve and characterized by XRD and SEM. This powder was used as functional part in the production of thick film tin oxide paste containing a resin vehicle with 4 wt. % nanosize glass frits acting as permanent binder. The glass frits where additionally milled for twelve hours in the agate mills to nanosized powder and sieved by a 325 mesh sieve as well. The achieved thick film paste was screen printed on alumina and fired at 850 degrees C peak temperature for 10 minutes in air. After the sintering process, thick film samples where characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The reflectivity was measured on the same samples by UV-VIS spectrophotometer: the band gap was determined from the slope of reflectance. After that a matrix of different interdigitated electrode structure of PdAg paste was printed and sintered using the mentioned sintering conditions. The tin oxide thick film was printed over the interdigitated electrodes as a top layer and sintered again under the same conditions. The total electrical resistance was measured as a function of the electrode spacing and temperature. A negative temperature coefficient (NTC) was identified and measured in the range from room temperature (27 degrees C) to 180 degrees C in a climate chamber. Finally the samples were placed into a gas reactor with NOx and CO gas and the resistance was measured in the same temperature range (27 degrees C-200 degrees C).",
publisher = "IOP Publishing Ltd, Bristol",
journal = "5th International Conference on Materials and Applications for Sensors and Transducers (Ic-Mast2015)",
title = "Nanostructured SnO2 thick films for gas sensor application: analysis of structural and electronic properties",
volume = "108",
doi = "10.1088/1757-899X/108/1/012003"
}

Misković, G., Aleksić, O., Nikolić, M. V., Nicolics, J., Radosavljević, G., Vasiljević, Z. Z., Luković, M.,& Smetana, W.. (2016). Nanostructured SnO2 thick films for gas sensor application: analysis of structural and electronic properties. in 5th International Conference on Materials and Applications for Sensors and Transducers (Ic-Mast2015)
IOP Publishing Ltd, Bristol., 108.
https://doi.org/10.1088/1757-899X/108/1/012003

Misković G, Aleksić O, Nikolić MV, Nicolics J, Radosavljević G, Vasiljević ZZ, Luković M, Smetana W. Nanostructured SnO2 thick films for gas sensor application: analysis of structural and electronic properties. in 5th International Conference on Materials and Applications for Sensors and Transducers (Ic-Mast2015). 2016;108.
doi:10.1088/1757-899X/108/1/012003 .

Misković, Goran, Aleksić, Obrad, Nikolić, Maria Vesna, Nicolics, Johann, Radosavljević, Goran, Vasiljević, Zorka Z, Luković, Miloljub, Smetana, Walter, "Nanostructured SnO2 thick films for gas sensor application: analysis of structural and electronic properties" in 5th International Conference on Materials and Applications for Sensors and Transducers (Ic-Mast2015), 108 (2016),
https://doi.org/10.1088/1757-899X/108/1/012003 . .

TY  - CONF
AU  - Misković, G.
AU  - Luković, Miloljub
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Z
AU  - Nicolics, Johann
AU  - Aleksić, Obrad
PY  - 2016
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/944
AB  - Two pseudobrookite (PSB) containing pastes were composed of a mixture of starting nanopowders of hematite (alpha-Fe2O3) and anatase (TiO2) in the molar ratios 1: 1 (referred to as PSB-1) and 1:1.5 (referred to as PSB-1.5), respectively, organic vehicle and glass frit. The pastes were screen printed on alumina (Al2O3) substrates and sintered in a hybrid conveyor furnace at 850 degrees C/10 min in air. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis showed that the resulting thick film samples were composed of pseudobrookite (Fe2TiO5) and also excess rutile (TiO2) in the case of PSB-1.5 samples with a small grained and relatively homogenous microstructure. An electric resistivity with negative temperature coefficient (NTC) was observed. An interdigitated electrode geometry was designed and different electrode spacing (0.2 and 0.25 mm) was analyzed. The electrode structure was printed of PdAg paste. The resistivity of pseudobrookite was measured and analyzed in view of possible applications as a sensor of environmental gases with sufficiently high sensitivity at operating temperatures lower than conventional gas sensor systems.
PB  - IEEE Computer Society
C3  - Proceedings of the International Spring Seminar on Electronics Technology
T1  - Analysis of electronic properties of pseudobrookite thick films with possible application for NO gas sensing
EP  - 391
SP  - 386
VL  - 2016-September
DO  - 10.1109/ISSE.2016.7563226
ER  - 

@conference{
author = "Misković, G. and Luković, Miloljub and Nikolić, Maria Vesna and Vasiljević, Zorka Z and Nicolics, Johann and Aleksić, Obrad",
year = "2016",
abstract = "Two pseudobrookite (PSB) containing pastes were composed of a mixture of starting nanopowders of hematite (alpha-Fe2O3) and anatase (TiO2) in the molar ratios 1: 1 (referred to as PSB-1) and 1:1.5 (referred to as PSB-1.5), respectively, organic vehicle and glass frit. The pastes were screen printed on alumina (Al2O3) substrates and sintered in a hybrid conveyor furnace at 850 degrees C/10 min in air. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis showed that the resulting thick film samples were composed of pseudobrookite (Fe2TiO5) and also excess rutile (TiO2) in the case of PSB-1.5 samples with a small grained and relatively homogenous microstructure. An electric resistivity with negative temperature coefficient (NTC) was observed. An interdigitated electrode geometry was designed and different electrode spacing (0.2 and 0.25 mm) was analyzed. The electrode structure was printed of PdAg paste. The resistivity of pseudobrookite was measured and analyzed in view of possible applications as a sensor of environmental gases with sufficiently high sensitivity at operating temperatures lower than conventional gas sensor systems.",
publisher = "IEEE Computer Society",
journal = "Proceedings of the International Spring Seminar on Electronics Technology",
title = "Analysis of electronic properties of pseudobrookite thick films with possible application for NO gas sensing",
pages = "391-386",
volume = "2016-September",
doi = "10.1109/ISSE.2016.7563226"
}

Misković, G., Luković, M., Nikolić, M. V., Vasiljević, Z. Z., Nicolics, J.,& Aleksić, O.. (2016). Analysis of electronic properties of pseudobrookite thick films with possible application for NO gas sensing. in Proceedings of the International Spring Seminar on Electronics Technology
IEEE Computer Society., 2016-September, 386-391.
https://doi.org/10.1109/ISSE.2016.7563226

Misković G, Luković M, Nikolić MV, Vasiljević ZZ, Nicolics J, Aleksić O. Analysis of electronic properties of pseudobrookite thick films with possible application for NO gas sensing. in Proceedings of the International Spring Seminar on Electronics Technology. 2016;2016-September:386-391.
doi:10.1109/ISSE.2016.7563226 .

Misković, G., Luković, Miloljub, Nikolić, Maria Vesna, Vasiljević, Zorka Z, Nicolics, Johann, Aleksić, Obrad, "Analysis of electronic properties of pseudobrookite thick films with possible application for NO gas sensing" in Proceedings of the International Spring Seminar on Electronics Technology, 2016-September (2016):386-391,
https://doi.org/10.1109/ISSE.2016.7563226 . .

TY  - JOUR
AU  - Milutinov, Miodrag M.
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub
AU  - Blaz, Nelu V.
AU  - Labus, Nebojša J.
AU  - Živanov, Ljiljana D
AU  - Aleksić, Obrad
PY  - 2016
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1013
AB  - In this work we have analyzed how milling starting commercial Mn-Zn powder prior to the sintering process has an influence on electrical conductivity, relative permittivity and complex impedance in the frequency range from 100 Hz to 1 GHz and relative permeability in the frequency range 1-500 MHz. Starting powders additionally were milled for 30, 60, 120 and 240 min followed by sintering disk samples between 900 and 1300 A degrees C. Structural properties were analyzed using XRD and SEM analysis. Milling the starting powder reduced grain and crystallite size, but longer milling leads to agglomeration and consequently an inhomogeneous microstructure that was more expressed at higher sintering temperatures. Milling the starting powder improved relative permeability, reaching a maximum for samples of starting powder milled for 60 min and sintered at 1200 A degrees C.
PB  - Springer, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - Influence of starting powder milling on structural properties, complex impedance, electrical conductivity and permeability of Mn-Zn ferrite
EP  - 11865
IS  - 11
SP  - 11856
VL  - 27
DO  - 10.1007/s10854-016-5328-1
ER  - 

@article{
author = "Milutinov, Miodrag M. and Nikolić, Maria Vesna and Luković, Miloljub and Blaz, Nelu V. and Labus, Nebojša J. and Živanov, Ljiljana D and Aleksić, Obrad",
year = "2016",
abstract = "In this work we have analyzed how milling starting commercial Mn-Zn powder prior to the sintering process has an influence on electrical conductivity, relative permittivity and complex impedance in the frequency range from 100 Hz to 1 GHz and relative permeability in the frequency range 1-500 MHz. Starting powders additionally were milled for 30, 60, 120 and 240 min followed by sintering disk samples between 900 and 1300 A degrees C. Structural properties were analyzed using XRD and SEM analysis. Milling the starting powder reduced grain and crystallite size, but longer milling leads to agglomeration and consequently an inhomogeneous microstructure that was more expressed at higher sintering temperatures. Milling the starting powder improved relative permeability, reaching a maximum for samples of starting powder milled for 60 min and sintered at 1200 A degrees C.",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "Influence of starting powder milling on structural properties, complex impedance, electrical conductivity and permeability of Mn-Zn ferrite",
pages = "11865-11856",
number = "11",
volume = "27",
doi = "10.1007/s10854-016-5328-1"
}

Milutinov, M. M., Nikolić, M. V., Luković, M., Blaz, N. V., Labus, N. J., Živanov, L. D.,& Aleksić, O.. (2016). Influence of starting powder milling on structural properties, complex impedance, electrical conductivity and permeability of Mn-Zn ferrite. in Journal of Materials Science-Materials in Electronics
Springer, Dordrecht., 27(11), 11856-11865.
https://doi.org/10.1007/s10854-016-5328-1

Milutinov MM, Nikolić MV, Luković M, Blaz NV, Labus NJ, Živanov LD, Aleksić O. Influence of starting powder milling on structural properties, complex impedance, electrical conductivity and permeability of Mn-Zn ferrite. in Journal of Materials Science-Materials in Electronics. 2016;27(11):11856-11865.
doi:10.1007/s10854-016-5328-1 .

Milutinov, Miodrag M., Nikolić, Maria Vesna, Luković, Miloljub, Blaz, Nelu V., Labus, Nebojša J., Živanov, Ljiljana D, Aleksić, Obrad, "Influence of starting powder milling on structural properties, complex impedance, electrical conductivity and permeability of Mn-Zn ferrite" in Journal of Materials Science-Materials in Electronics, 27, no. 11 (2016):11856-11865,
https://doi.org/10.1007/s10854-016-5328-1 . .