TY  - CONF
AU  - Vasiljević, Zorka Z
AU  - Dojčinović, Milena
AU  - Ilić, Nikola
AU  - Vujančević, Jelena
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/3177
AB  - Pure phase orthorhombic pseudobrookite (Fe2TiO5) was synthesized using a
modified sol-gel method. Bulk samples were obtained by uniaxial pressing of the
obtained powder into compacts sintered at 900 oC for 2 h. A noticeable NTC
thermistor effect was noted with a B20/55 value of 5747 K and high resistivity of 45
Mcm at 25 oC. A non-linear current-voltage characteristic was observed in the
voltage range (0.2–1100 V) at room temperature (25 oC). Non-saturated (lossy) P-E
loops were obtained at both measured frequencies (100 Hz and 1 kHz) more
expressed for the higher measured frequency, with the maximal polarization of
0.291 mikroC/cm2 and remanent polarization of 0.123 mikroC/cm2 for 20 kV/cm2 and 1 kHz.
Complex impedance measured in the temperature range 20–330 oC enabled analysis
of the contribution of grain boundary and grains to the conduction mechanism. Bulk
conductivity data determined in this temperature range was analyzed using
Jonscher’s universal dielectric response model and showed that the conduction
process followed the nearest neighbor hopping conduction mechanism.
PB  - Institut za multidisciplinarna istraņivanja Kneza Vińeslava 1, 11000 Belgrade, Serbia
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia, 2023
T1  - Investigating NTC thermistor, ferroelectric and electric properties of Fe2TiO5
SP  - 118
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_3177
ER  - 

@conference{
author = "Vasiljević, Zorka Z and Dojčinović, Milena and Ilić, Nikola and Vujančević, Jelena and Nikolić, Maria Vesna",
year = "2023",
abstract = "Pure phase orthorhombic pseudobrookite (Fe2TiO5) was synthesized using a
modified sol-gel method. Bulk samples were obtained by uniaxial pressing of the
obtained powder into compacts sintered at 900 oC for 2 h. A noticeable NTC
thermistor effect was noted with a B20/55 value of 5747 K and high resistivity of 45
Mcm at 25 oC. A non-linear current-voltage characteristic was observed in the
voltage range (0.2–1100 V) at room temperature (25 oC). Non-saturated (lossy) P-E
loops were obtained at both measured frequencies (100 Hz and 1 kHz) more
expressed for the higher measured frequency, with the maximal polarization of
0.291 mikroC/cm2 and remanent polarization of 0.123 mikroC/cm2 for 20 kV/cm2 and 1 kHz.
Complex impedance measured in the temperature range 20–330 oC enabled analysis
of the contribution of grain boundary and grains to the conduction mechanism. Bulk
conductivity data determined in this temperature range was analyzed using
Jonscher’s universal dielectric response model and showed that the conduction
process followed the nearest neighbor hopping conduction mechanism.",
publisher = "Institut za multidisciplinarna istraņivanja Kneza Vińeslava 1, 11000 Belgrade, Serbia",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia, 2023",
title = "Investigating NTC thermistor, ferroelectric and electric properties of Fe2TiO5",
pages = "118",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_3177"
}

Vasiljević, Z. Z., Dojčinović, M., Ilić, N., Vujančević, J.,& Nikolić, M. V.. (2023). Investigating NTC thermistor, ferroelectric and electric properties of Fe2TiO5. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia, 2023
Institut za multidisciplinarna istraņivanja Kneza Vińeslava 1, 11000 Belgrade, Serbia., 118.
https://hdl.handle.net/21.15107/rcub_rimsi_3177

Vasiljević ZZ, Dojčinović M, Ilić N, Vujančević J, Nikolić MV. Investigating NTC thermistor, ferroelectric and electric properties of Fe2TiO5. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia, 2023. 2023;:118.
https://hdl.handle.net/21.15107/rcub_rimsi_3177 .

Vasiljević, Zorka Z, Dojčinović, Milena, Ilić, Nikola, Vujančević, Jelena, Nikolić, Maria Vesna, "Investigating NTC thermistor, ferroelectric and electric properties of Fe2TiO5" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia, 2023 (2023):118,
https://hdl.handle.net/21.15107/rcub_rimsi_3177 .

TY  - CONF
AU  - Vasiljević, Zorka Z
AU  - Dojčinović, Milena
AU  - Pavlović, Vera P.
AU  - Vujančević, Jelena
AU  - Tadić, Nenad B.
AU  - Nikolić, Maria Vesna
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6679
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1628
AB  - Nanocrystalline cobalt magnesium ferrites with varying cobalt and magnesium content (CoxMg1-xFe2O4, 0<x<1) were synthesized using the sol-gel self-combustion method with citric acid as fuel, followed by calcination at 700 C for 2 hours. Structural characterization was performed using Xray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and Raman spectroscopy. It confirmed the formation of agglomerated nanocrystalline ferrites with an inverse cubic spinel structure. The optical band gap energy was determined using UV/Vis spectrophotometry. It reduced with increased Co content. Visible light photocatalytic activity was tested using natural and artificial light sources through a series of experimental degradations of the methylene blue (MB) solution.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
T1  - Structure, morphology and photocatalytic properties of CoxMg1-xFe2O4 (0<x<1) spinel ferrites obtained by sol-gel synthesis
EP  - 126
SP  - 126
UR  - https://hdl.handle.net/21.15107/rcub_dais_6679
ER  - 

@conference{
author = "Vasiljević, Zorka Z and Dojčinović, Milena and Pavlović, Vera P. and Vujančević, Jelena and Tadić, Nenad B. and Nikolić, Maria Vesna",
year = "2019",
abstract = "Nanocrystalline cobalt magnesium ferrites with varying cobalt and magnesium content (CoxMg1-xFe2O4, 0<x<1) were synthesized using the sol-gel self-combustion method with citric acid as fuel, followed by calcination at 700 C for 2 hours. Structural characterization was performed using Xray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and Raman spectroscopy. It confirmed the formation of agglomerated nanocrystalline ferrites with an inverse cubic spinel structure. The optical band gap energy was determined using UV/Vis spectrophotometry. It reduced with increased Co content. Visible light photocatalytic activity was tested using natural and artificial light sources through a series of experimental degradations of the methylene blue (MB) solution.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019",
title = "Structure, morphology and photocatalytic properties of CoxMg1-xFe2O4 (0<x<1) spinel ferrites obtained by sol-gel synthesis",
pages = "126-126",
url = "https://hdl.handle.net/21.15107/rcub_dais_6679"
}

Vasiljević, Z. Z., Dojčinović, M., Pavlović, V. P., Vujančević, J., Tadić, N. B.,& Nikolić, M. V.. (2019). Structure, morphology and photocatalytic properties of CoxMg1-xFe2O4 (0<x<1) spinel ferrites obtained by sol-gel synthesis. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019
Belgrade : Materials Research Society of Serbia., 126-126.
https://hdl.handle.net/21.15107/rcub_dais_6679

Vasiljević ZZ, Dojčinović M, Pavlović VP, Vujančević J, Tadić NB, Nikolić MV. Structure, morphology and photocatalytic properties of CoxMg1-xFe2O4 (0<x<1) spinel ferrites obtained by sol-gel synthesis. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019. 2019;:126-126.
https://hdl.handle.net/21.15107/rcub_dais_6679 .

Vasiljević, Zorka Z, Dojčinović, Milena, Pavlović, Vera P., Vujančević, Jelena, Tadić, Nenad B., Nikolić, Maria Vesna, "Structure, morphology and photocatalytic properties of CoxMg1-xFe2O4 (0<x<1) spinel ferrites obtained by sol-gel synthesis" in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 (2019):126-126,
https://hdl.handle.net/21.15107/rcub_dais_6679 .

TY  - CONF
AU  - Vasiljević, Zorka Z
AU  - Dojčinović, Milena
AU  - Janković Častvan, Ivona
AU  - Vujančević, Jelena
AU  - Tadić, Nenad B.
AU  - Nikolić, Maria Vesna
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6967
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1625
AB  - Fe2TiO5 nanoparticles were synthesized by modified sol-gel method using Fe(NO3)3×9H2O and Ti(OC3H7)4 as starting reagents, oxalic acid as chilate agent and cetyltrimethylammonium bromide as surfactant. The aim of this study was to asses the photocatalytic degradaton of water pollutants, methylene blue and the antibiotic Oxytetracycline (OTC) using natural sunlight irradiation. As prepared nanoparticles were characterized by XRD, BET, FESEM and UV-vis DRS. The optimal operating conditions of photocatalytic degradation of water pollutants were achived by changing the pH of the solution and changing the concentration of photocatalyst.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
T1  - Photocatalytic degradation of methylene blue and oxytetracycline via sol-gel synthesized pseudobrookite
EP  - 70
SP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_dais_6967
ER  - 

@conference{
author = "Vasiljević, Zorka Z and Dojčinović, Milena and Janković Častvan, Ivona and Vujančević, Jelena and Tadić, Nenad B. and Nikolić, Maria Vesna",
year = "2019",
abstract = "Fe2TiO5 nanoparticles were synthesized by modified sol-gel method using Fe(NO3)3×9H2O and Ti(OC3H7)4 as starting reagents, oxalic acid as chilate agent and cetyltrimethylammonium bromide as surfactant. The aim of this study was to asses the photocatalytic degradaton of water pollutants, methylene blue and the antibiotic Oxytetracycline (OTC) using natural sunlight irradiation. As prepared nanoparticles were characterized by XRD, BET, FESEM and UV-vis DRS. The optimal operating conditions of photocatalytic degradation of water pollutants were achived by changing the pH of the solution and changing the concentration of photocatalyst.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia",
title = "Photocatalytic degradation of methylene blue and oxytetracycline via sol-gel synthesized pseudobrookite",
pages = "70-70",
url = "https://hdl.handle.net/21.15107/rcub_dais_6967"
}

Vasiljević, Z. Z., Dojčinović, M., Janković Častvan, I., Vujančević, J., Tadić, N. B.,& Nikolić, M. V.. (2019). Photocatalytic degradation of methylene blue and oxytetracycline via sol-gel synthesized pseudobrookite. in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 70-70.
https://hdl.handle.net/21.15107/rcub_dais_6967

Vasiljević ZZ, Dojčinović M, Janković Častvan I, Vujančević J, Tadić NB, Nikolić MV. Photocatalytic degradation of methylene blue and oxytetracycline via sol-gel synthesized pseudobrookite. in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia. 2019;:70-70.
https://hdl.handle.net/21.15107/rcub_dais_6967 .

Vasiljević, Zorka Z, Dojčinović, Milena, Janković Častvan, Ivona, Vujančević, Jelena, Tadić, Nenad B., Nikolić, Maria Vesna, "Photocatalytic degradation of methylene blue and oxytetracycline via sol-gel synthesized pseudobrookite" in Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia (2019):70-70,
https://hdl.handle.net/21.15107/rcub_dais_6967 .

TY  - CONF
AU  - Vasiljević, Zorka Z
AU  - Dojčinović, Milena
AU  - Vujančević, Jelena
AU  - Tadić, Nenad B.
AU  - Nikolić, Maria Vesna
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/7005
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1623
AB  - Nanocrystalline iron manganite was synthesized using a sol-gel self-combustion method with glycine as fuel, followed by calcination at 900 °C for 8 hours. Structural characterization was performed using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). It confirmed the formation of nanocrystalline iron-manganite with a perovskite structure. Humidity sensing properties of bulk and thick film samples of the obtained nanocrystalline iron manganite powder were analyzed. Organic vehicles were added to the powder to form a thick film paste that was screen printed on alumina substrate with test PdAg interdigitated electrodes. Impedance response of bulk and thick film samples was analyzed in a humidity chamber in the relative humidity range 30-90% in the frequency range 42 Hz to 1 MHz in view of applying iron-manganite for humidity sensing applications.
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 iron-manganite (FeMnO3) applied for humidity sensing
EP  - 94
SP  - 94
UR  - https://hdl.handle.net/21.15107/rcub_dais_7005
ER  - 

@conference{
author = "Vasiljević, Zorka Z and Dojčinović, Milena and Vujančević, Jelena and Tadić, Nenad B. and Nikolić, Maria Vesna",
year = "2019",
abstract = "Nanocrystalline iron manganite was synthesized using a sol-gel self-combustion method with glycine as fuel, followed by calcination at 900 °C for 8 hours. Structural characterization was performed using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). It confirmed the formation of nanocrystalline iron-manganite with a perovskite structure. Humidity sensing properties of bulk and thick film samples of the obtained nanocrystalline iron manganite powder were analyzed. Organic vehicles were added to the powder to form a thick film paste that was screen printed on alumina substrate with test PdAg interdigitated electrodes. Impedance response of bulk and thick film samples was analyzed in a humidity chamber in the relative humidity range 30-90% in the frequency range 42 Hz to 1 MHz in view of applying iron-manganite for humidity sensing applications.",
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 iron-manganite (FeMnO3) applied for humidity sensing",
pages = "94-94",
url = "https://hdl.handle.net/21.15107/rcub_dais_7005"
}

Vasiljević, Z. Z., Dojčinović, M., Vujančević, J., Tadić, N. B.,& Nikolić, M. V.. (2019). Nanocrystalline iron-manganite (FeMnO3) applied for humidity sensing. 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., 94-94.
https://hdl.handle.net/21.15107/rcub_dais_7005

Vasiljević ZZ, Dojčinović M, Vujančević J, Tadić NB, Nikolić MV. Nanocrystalline iron-manganite (FeMnO3) applied for humidity sensing. 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;:94-94.
https://hdl.handle.net/21.15107/rcub_dais_7005 .

Vasiljević, Zorka Z, Dojčinović, Milena, Vujančević, Jelena, Tadić, Nenad B., Nikolić, Maria Vesna, "Nanocrystalline iron-manganite (FeMnO3) applied for humidity sensing" 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):94-94,
https://hdl.handle.net/21.15107/rcub_dais_7005 .