TY  - JOUR
AU  - Vojisavljević, Katarina
AU  - Vrabelj, Tanja
AU  - Ursic, Hana
AU  - Malic, Barbara
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1385
AB  - The effects of strontium doping (0-2 mol%) on structure, microstructure and functional properties of potassium sodium niobate (KNN) thin films deposited on Pt(111)/TiOy/SiO2/Si substrates were investigated. Incorporation of Sr up to 1 mol% into the KNN crystal lattice hindered the grain growth, vertical roughness and contributed to the fine-grained and dense thin film microstructure with monoclinic crystal syngony. This effectively reduced leakage current and improved ferroelectric characteristics. Higher doping content (2 mol%) led to the formation of secondary phases and complete deterioration of functional properties. Stabilization of 1 mol% Sr-doped KNN solution with diethanolamine resulted in the film with dielectric constant and losses of 394 and 0.018 at 100 kHz, respectively, leakage current of 3.8 . 10(-8) A/cm(2) at 100 kV/cm and well saturated ferroelectric hysteresis with P-r of 6.8 mu C/cm(2) and low E-c of 85 kV/cm. Benefiting from improved leakage current characteristics at high electric fields and less defect structure, the film showed maximal local piezoelectric coefficient, d(33) similar to 110 pm/V determined by piezo-response force microscopy (PFM), ability to reach fully saturated local hysteresis under low switching DC voltage of 15 V and good ferroelectric domain mobility proven by successful in-situ poling of chosen area using PFM lithography.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Processing and Application of Ceramics
T1  - Effects of strontium doping on microstructure and functional properties of solution-derived potassium sodium niobate thin films
EP  - 241
IS  - 3
SP  - 231
VL  - 14
DO  - 10.2298/PAC2003231V
ER  - 

@article{
author = "Vojisavljević, Katarina and Vrabelj, Tanja and Ursic, Hana and Malic, Barbara",
year = "2020",
abstract = "The effects of strontium doping (0-2 mol%) on structure, microstructure and functional properties of potassium sodium niobate (KNN) thin films deposited on Pt(111)/TiOy/SiO2/Si substrates were investigated. Incorporation of Sr up to 1 mol% into the KNN crystal lattice hindered the grain growth, vertical roughness and contributed to the fine-grained and dense thin film microstructure with monoclinic crystal syngony. This effectively reduced leakage current and improved ferroelectric characteristics. Higher doping content (2 mol%) led to the formation of secondary phases and complete deterioration of functional properties. Stabilization of 1 mol% Sr-doped KNN solution with diethanolamine resulted in the film with dielectric constant and losses of 394 and 0.018 at 100 kHz, respectively, leakage current of 3.8 . 10(-8) A/cm(2) at 100 kV/cm and well saturated ferroelectric hysteresis with P-r of 6.8 mu C/cm(2) and low E-c of 85 kV/cm. Benefiting from improved leakage current characteristics at high electric fields and less defect structure, the film showed maximal local piezoelectric coefficient, d(33) similar to 110 pm/V determined by piezo-response force microscopy (PFM), ability to reach fully saturated local hysteresis under low switching DC voltage of 15 V and good ferroelectric domain mobility proven by successful in-situ poling of chosen area using PFM lithography.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Effects of strontium doping on microstructure and functional properties of solution-derived potassium sodium niobate thin films",
pages = "241-231",
number = "3",
volume = "14",
doi = "10.2298/PAC2003231V"
}

Vojisavljević, K., Vrabelj, T., Ursic, H.,& Malic, B.. (2020). Effects of strontium doping on microstructure and functional properties of solution-derived potassium sodium niobate thin films. in Processing and Application of Ceramics
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 14(3), 231-241.
https://doi.org/10.2298/PAC2003231V

Vojisavljević K, Vrabelj T, Ursic H, Malic B. Effects of strontium doping on microstructure and functional properties of solution-derived potassium sodium niobate thin films. in Processing and Application of Ceramics. 2020;14(3):231-241.
doi:10.2298/PAC2003231V .

Vojisavljević, Katarina, Vrabelj, Tanja, Ursic, Hana, Malic, Barbara, "Effects of strontium doping on microstructure and functional properties of solution-derived potassium sodium niobate thin films" in Processing and Application of Ceramics, 14, no. 3 (2020):231-241,
https://doi.org/10.2298/PAC2003231V . .

TY  - CONF
AU  - Belavič, Darko
AU  - Vojisavljević, Katarina
AU  - Kuscer, Danjela
AU  - Pečnik, Tanja
AU  - Zając, Jerzy
AU  - Anghelescu, Adrian
AU  - Muscalu, George
AU  - Hodnik, Marjan
AU  - Kos, Tomaž
AU  - Drnovšek, Silvo
AU  - Malic, Barbara
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2565
AB  - In the contributionthe design and the fabrication of two different types of ceramic packaging for PiezoMEMS devices ispresented. The first ceramic packaging is designed for housing the piezoelectric energy harvester. This packaging is made using LTCC technology and in the final application willintegrate piezoelectric device, electroniccircuit, storage capacitor and other components into the complex microsystem. The second packaging is developed for piezoelectric vibrating device as a part of water-purification system. In this case,the thick-film technology is used for electrical interconnection of piezoelectric actuators and for the hermetic watertight insulation of the system.
C3  - 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition
T1  - Ceramic packaging of PiezoMEMS devices
EP  - 4
IS  - 17732550
SP  - 1
DO  - 10.23919/EMPC.2017.8346888
ER  - 

@conference{
author = "Belavič, Darko and Vojisavljević, Katarina and Kuscer, Danjela and Pečnik, Tanja and Zając, Jerzy and Anghelescu, Adrian and Muscalu, George and Hodnik, Marjan and Kos, Tomaž and Drnovšek, Silvo and Malic, Barbara",
year = "2017",
abstract = "In the contributionthe design and the fabrication of two different types of ceramic packaging for PiezoMEMS devices ispresented. The first ceramic packaging is designed for housing the piezoelectric energy harvester. This packaging is made using LTCC technology and in the final application willintegrate piezoelectric device, electroniccircuit, storage capacitor and other components into the complex microsystem. The second packaging is developed for piezoelectric vibrating device as a part of water-purification system. In this case,the thick-film technology is used for electrical interconnection of piezoelectric actuators and for the hermetic watertight insulation of the system.",
journal = "21st European Microelectronics and Packaging Conference (EMPC) & Exhibition",
title = "Ceramic packaging of PiezoMEMS devices",
pages = "4-1",
number = "17732550",
doi = "10.23919/EMPC.2017.8346888"
}

Belavič, D., Vojisavljević, K., Kuscer, D., Pečnik, T., Zając, J., Anghelescu, A., Muscalu, G., Hodnik, M., Kos, T., Drnovšek, S.,& Malic, B.. (2017). Ceramic packaging of PiezoMEMS devices. in 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition(17732550), 1-4.
https://doi.org/10.23919/EMPC.2017.8346888

Belavič D, Vojisavljević K, Kuscer D, Pečnik T, Zając J, Anghelescu A, Muscalu G, Hodnik M, Kos T, Drnovšek S, Malic B. Ceramic packaging of PiezoMEMS devices. in 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition. 2017;(17732550):1-4.
doi:10.23919/EMPC.2017.8346888 .

Belavič, Darko, Vojisavljević, Katarina, Kuscer, Danjela, Pečnik, Tanja, Zając, Jerzy, Anghelescu, Adrian, Muscalu, George, Hodnik, Marjan, Kos, Tomaž, Drnovšek, Silvo, Malic, Barbara, "Ceramic packaging of PiezoMEMS devices" in 21st European Microelectronics and Packaging Conference (EMPC) & Exhibition, no. 17732550 (2017):1-4,
https://doi.org/10.23919/EMPC.2017.8346888 . .

TY  - JOUR
AU  - Stanciu, Irina
AU  - Predoana, Luminita
AU  - Cusu, Jeanina Pandele
AU  - Preda, Silviu
AU  - Anastasescu, Mihai
AU  - Vojisavljević, Katarina
AU  - Malic, Barbara
AU  - Zaharescu, Maria
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1040
AB  - In order to establish the influence of the preparation method on thermal behaviour of gels obtained by the sol-gel and microwave-assisted sol-gel methods, a comparative thermal analysis study was conducted by the thermogravimetric and differential thermal analysis (TG/DTG/DTA) and evolved gas analysis (EGA) on TiO2 and V2O5-doped TiO2 gels, where TiO2:V2O5 molar ratio was set to 99.95:0.05 and 98.0:2.0. In contrast to TiO2 gels, for which the thermal behaviour was not significantly influenced by the preparation method, the microwave-irradiated binary samples showed a more complex and prolonged decomposition compared to their non-irradiated counterparts. This observation was correlated with influence of microwaves in enhancing the reaction rate between the Ti and V reagents leading to formation of more complex compositions of gels. Based on TG/DTG/DTA results, the temperatures of 300 and 450 A degrees C were chosen for the processing of powders in air. All samples thermally treated at 300 and 450 A degrees C crystallized in a single anatase phase except the TiO2:V2O5 with a molar ratio 99.95:0.05, obtained by microwave-assisted sol-gel method that contains also small amount of rutile phase. At 550 A degrees C all samples contain mixture of anatase and rutile phases.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method
EP  - 651
IS  - 2
SP  - 639
VL  - 130
DO  - 10.1007/s10973-017-6478-y
ER  - 

@article{
author = "Stanciu, Irina and Predoana, Luminita and Cusu, Jeanina Pandele and Preda, Silviu and Anastasescu, Mihai and Vojisavljević, Katarina and Malic, Barbara and Zaharescu, Maria",
year = "2017",
abstract = "In order to establish the influence of the preparation method on thermal behaviour of gels obtained by the sol-gel and microwave-assisted sol-gel methods, a comparative thermal analysis study was conducted by the thermogravimetric and differential thermal analysis (TG/DTG/DTA) and evolved gas analysis (EGA) on TiO2 and V2O5-doped TiO2 gels, where TiO2:V2O5 molar ratio was set to 99.95:0.05 and 98.0:2.0. In contrast to TiO2 gels, for which the thermal behaviour was not significantly influenced by the preparation method, the microwave-irradiated binary samples showed a more complex and prolonged decomposition compared to their non-irradiated counterparts. This observation was correlated with influence of microwaves in enhancing the reaction rate between the Ti and V reagents leading to formation of more complex compositions of gels. Based on TG/DTG/DTA results, the temperatures of 300 and 450 A degrees C were chosen for the processing of powders in air. All samples thermally treated at 300 and 450 A degrees C crystallized in a single anatase phase except the TiO2:V2O5 with a molar ratio 99.95:0.05, obtained by microwave-assisted sol-gel method that contains also small amount of rutile phase. At 550 A degrees C all samples contain mixture of anatase and rutile phases.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method",
pages = "651-639",
number = "2",
volume = "130",
doi = "10.1007/s10973-017-6478-y"
}

Stanciu, I., Predoana, L., Cusu, J. P., Preda, S., Anastasescu, M., Vojisavljević, K., Malic, B.,& Zaharescu, M.. (2017). Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 130(2), 639-651.
https://doi.org/10.1007/s10973-017-6478-y

Stanciu I, Predoana L, Cusu JP, Preda S, Anastasescu M, Vojisavljević K, Malic B, Zaharescu M. Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method. in Journal of Thermal Analysis and Calorimetry. 2017;130(2):639-651.
doi:10.1007/s10973-017-6478-y .

Stanciu, Irina, Predoana, Luminita, Cusu, Jeanina Pandele, Preda, Silviu, Anastasescu, Mihai, Vojisavljević, Katarina, Malic, Barbara, Zaharescu, Maria, "Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method" in Journal of Thermal Analysis and Calorimetry, 130, no. 2 (2017):639-651,
https://doi.org/10.1007/s10973-017-6478-y . .

TY  - JOUR
AU  - Vojisavljević, Katarina
AU  - Wicker, Susanne
AU  - Can, Inci
AU  - Bencan, Andreja
AU  - Barsan, Nicolae
AU  - Malic, Barbara
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1038
AB  - The present study demonstrates the relationship between the combustion reaction mechanism induced by the exothermicity of the cobalt nitrate-glycine solution-combustion reactions and morphological details of the nanocrystalline Co3O4. The thermal decomposition pathway and the amount of the heat liberated in combustion are defined by the exothermic reaction between gaseous NH3 and N2O species. A direct evidence that the exothermicity of the combustion reaction plays an important role in formation of the powders with different morphology was obtained from the scanning and transmission electron microscopies. In contrast to stoichiometric reaction, where the short-string Co3O4 particles form hard agglomerates, the energetically softer 50% fuel lean reaction is responsible for weak bonds between Co3O4 particles and formation of the loose cauliflower-like agglomerates. The latter powder with the specific surface area of 64.4 m(2)/g and the average crystallite size of similar to 11 nm was used for the processing of drop-coated sensors, which showed a superior sensor response toward 20 ppm of acetone in 25% r.h. humidity and at low operating temperature of 150 degrees C.
PB  - Elsevier Science Bv, Amsterdam
T2  - Advanced Powder Technology
T1  - Nanocrystalline cobalt-oxide powders by solution-combustion synthesis and their application in chemical sensors
EP  - 1128
IS  - 4
SP  - 1118
VL  - 28
DO  - 10.1016/j.apt.2016.10.029
ER  - 

@article{
author = "Vojisavljević, Katarina and Wicker, Susanne and Can, Inci and Bencan, Andreja and Barsan, Nicolae and Malic, Barbara",
year = "2017",
abstract = "The present study demonstrates the relationship between the combustion reaction mechanism induced by the exothermicity of the cobalt nitrate-glycine solution-combustion reactions and morphological details of the nanocrystalline Co3O4. The thermal decomposition pathway and the amount of the heat liberated in combustion are defined by the exothermic reaction between gaseous NH3 and N2O species. A direct evidence that the exothermicity of the combustion reaction plays an important role in formation of the powders with different morphology was obtained from the scanning and transmission electron microscopies. In contrast to stoichiometric reaction, where the short-string Co3O4 particles form hard agglomerates, the energetically softer 50% fuel lean reaction is responsible for weak bonds between Co3O4 particles and formation of the loose cauliflower-like agglomerates. The latter powder with the specific surface area of 64.4 m(2)/g and the average crystallite size of similar to 11 nm was used for the processing of drop-coated sensors, which showed a superior sensor response toward 20 ppm of acetone in 25% r.h. humidity and at low operating temperature of 150 degrees C.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Advanced Powder Technology",
title = "Nanocrystalline cobalt-oxide powders by solution-combustion synthesis and their application in chemical sensors",
pages = "1128-1118",
number = "4",
volume = "28",
doi = "10.1016/j.apt.2016.10.029"
}

Vojisavljević, K., Wicker, S., Can, I., Bencan, A., Barsan, N.,& Malic, B.. (2017). Nanocrystalline cobalt-oxide powders by solution-combustion synthesis and their application in chemical sensors. in Advanced Powder Technology
Elsevier Science Bv, Amsterdam., 28(4), 1118-1128.
https://doi.org/10.1016/j.apt.2016.10.029

Vojisavljević K, Wicker S, Can I, Bencan A, Barsan N, Malic B. Nanocrystalline cobalt-oxide powders by solution-combustion synthesis and their application in chemical sensors. in Advanced Powder Technology. 2017;28(4):1118-1128.
doi:10.1016/j.apt.2016.10.029 .

Vojisavljević, Katarina, Wicker, Susanne, Can, Inci, Bencan, Andreja, Barsan, Nicolae, Malic, Barbara, "Nanocrystalline cobalt-oxide powders by solution-combustion synthesis and their application in chemical sensors" in Advanced Powder Technology, 28, no. 4 (2017):1118-1128,
https://doi.org/10.1016/j.apt.2016.10.029 . .

TY  - JOUR
AU  - Campa, Andrej
AU  - Berginc, Marko
AU  - Vojisavljević, Katarina
AU  - Malic, Barbara
AU  - Panjan, Peter
AU  - Topic, Marko
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1033
AB  - In optoelectronic and photovoltaic devices, transparent conductive oxides are important in establishing a good electrical contact while minimizing optical losses over a broad range of wavelengths (400-1200 nm). To date, research has focused on In2O3- SnO2 (ITO) films. In this paper, we report on a study of Ga-doped ITO (GITO) films, which in contrast to standard ITO 90/10 (i.e. In:Sn = 90:10) films contain less In. Initially, we describe the development of a multicomponent Ga-In-Sn oxide target with a Ga:In:Sn ratio of 4:64:32, which was used in a radio frequency sputtering system to deposit GITO thin films on glass substrates. Furthermore, we describe the microstructural/structural (scanning electron microscopy and X-ray diffraction spectroscopy), optical (wavelength dependent complex refractive indices) and electrical (resistivity, mobility, free carrier density) measurements used to optimize sputtering conditions and post-annealing processing. As well as achieving an optimized/improved GITO thin film deposited at high substrate and annealing temperatures, we obtained promising thin GITO films with excellent optical properties and with relatively low resistivity (1.7 m Omega cm) deposited and annealed at temperatures around 200 degrees C.
PB  - Elsevier Science Sa, Lausanne
T2  - Thin Solid Films
T1  - Optical and electrical properties of gallium doped indium tin oxide optimized for low deposition temperature applications
EP  - 57
SP  - 52
VL  - 621
DO  - 10.1016/j.tsf.2016.11.028
ER  - 

@article{
author = "Campa, Andrej and Berginc, Marko and Vojisavljević, Katarina and Malic, Barbara and Panjan, Peter and Topic, Marko",
year = "2017",
abstract = "In optoelectronic and photovoltaic devices, transparent conductive oxides are important in establishing a good electrical contact while minimizing optical losses over a broad range of wavelengths (400-1200 nm). To date, research has focused on In2O3- SnO2 (ITO) films. In this paper, we report on a study of Ga-doped ITO (GITO) films, which in contrast to standard ITO 90/10 (i.e. In:Sn = 90:10) films contain less In. Initially, we describe the development of a multicomponent Ga-In-Sn oxide target with a Ga:In:Sn ratio of 4:64:32, which was used in a radio frequency sputtering system to deposit GITO thin films on glass substrates. Furthermore, we describe the microstructural/structural (scanning electron microscopy and X-ray diffraction spectroscopy), optical (wavelength dependent complex refractive indices) and electrical (resistivity, mobility, free carrier density) measurements used to optimize sputtering conditions and post-annealing processing. As well as achieving an optimized/improved GITO thin film deposited at high substrate and annealing temperatures, we obtained promising thin GITO films with excellent optical properties and with relatively low resistivity (1.7 m Omega cm) deposited and annealed at temperatures around 200 degrees C.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Thin Solid Films",
title = "Optical and electrical properties of gallium doped indium tin oxide optimized for low deposition temperature applications",
pages = "57-52",
volume = "621",
doi = "10.1016/j.tsf.2016.11.028"
}

Campa, A., Berginc, M., Vojisavljević, K., Malic, B., Panjan, P.,& Topic, M.. (2017). Optical and electrical properties of gallium doped indium tin oxide optimized for low deposition temperature applications. in Thin Solid Films
Elsevier Science Sa, Lausanne., 621, 52-57.
https://doi.org/10.1016/j.tsf.2016.11.028

Campa A, Berginc M, Vojisavljević K, Malic B, Panjan P, Topic M. Optical and electrical properties of gallium doped indium tin oxide optimized for low deposition temperature applications. in Thin Solid Films. 2017;621:52-57.
doi:10.1016/j.tsf.2016.11.028 .

Campa, Andrej, Berginc, Marko, Vojisavljević, Katarina, Malic, Barbara, Panjan, Peter, Topic, Marko, "Optical and electrical properties of gallium doped indium tin oxide optimized for low deposition temperature applications" in Thin Solid Films, 621 (2017):52-57,
https://doi.org/10.1016/j.tsf.2016.11.028 . .

TY  - JOUR
AU  - Saeedabad, S. Hemmatzadeh
AU  - Baratto, C.
AU  - Rigoni, F.
AU  - Rozati, S. M.
AU  - Sberveglieri, G.
AU  - Vojisavljević, Katarina
AU  - Malic, Barbara
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1024
AB  - In this work, we prepared zinc stannate (ZTO) thin films by RF sputtering starting from a sintered ceramic target with Zn:Sn ratio 2:1, by varying the argon/oxygen pressures during the deposition process. Thin films were deposited on alumina substrates at 400 degrees C, and subsequently annealed at 600 degrees C in the air. The transparency typical for the as-deposited films was preserved even after their annealing at 600 degrees C in the air, where the high temperature was crucial for the improvement of the crystalline Zn2SnO4 , ZTO phase, as confirmed by Raman measurements. Additionally, the post-deposition thermal treatment resulted in porous ZTO films suitable for gas sensing application. The structural and surface morphological properties of thin films were investigated by Raman spectroscopy, field emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray analysis (EDX). Finally, the gas sensing properties towards nitrogen dioxide, ethanol and acetone have been tested, showing the high potentiality of this material as the gas sensor for ethanol and acetone at 400 degrees C, and nitrogen dioxide at 200 degrees C.
PB  - Elsevier Sci Ltd, Oxford
T2  - Materials Science in Semiconductor Processing
T1  - Gas sensing applications of the inverse spinel zinc tin oxide
EP  - 469
SP  - 461
VL  - 71
DO  - 10.1016/j.mssp.2017.09.006
ER  - 

@article{
author = "Saeedabad, S. Hemmatzadeh and Baratto, C. and Rigoni, F. and Rozati, S. M. and Sberveglieri, G. and Vojisavljević, Katarina and Malic, Barbara",
year = "2017",
abstract = "In this work, we prepared zinc stannate (ZTO) thin films by RF sputtering starting from a sintered ceramic target with Zn:Sn ratio 2:1, by varying the argon/oxygen pressures during the deposition process. Thin films were deposited on alumina substrates at 400 degrees C, and subsequently annealed at 600 degrees C in the air. The transparency typical for the as-deposited films was preserved even after their annealing at 600 degrees C in the air, where the high temperature was crucial for the improvement of the crystalline Zn2SnO4 , ZTO phase, as confirmed by Raman measurements. Additionally, the post-deposition thermal treatment resulted in porous ZTO films suitable for gas sensing application. The structural and surface morphological properties of thin films were investigated by Raman spectroscopy, field emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray analysis (EDX). Finally, the gas sensing properties towards nitrogen dioxide, ethanol and acetone have been tested, showing the high potentiality of this material as the gas sensor for ethanol and acetone at 400 degrees C, and nitrogen dioxide at 200 degrees C.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Materials Science in Semiconductor Processing",
title = "Gas sensing applications of the inverse spinel zinc tin oxide",
pages = "469-461",
volume = "71",
doi = "10.1016/j.mssp.2017.09.006"
}

Saeedabad, S. H., Baratto, C., Rigoni, F., Rozati, S. M., Sberveglieri, G., Vojisavljević, K.,& Malic, B.. (2017). Gas sensing applications of the inverse spinel zinc tin oxide. in Materials Science in Semiconductor Processing
Elsevier Sci Ltd, Oxford., 71, 461-469.
https://doi.org/10.1016/j.mssp.2017.09.006

Saeedabad SH, Baratto C, Rigoni F, Rozati SM, Sberveglieri G, Vojisavljević K, Malic B. Gas sensing applications of the inverse spinel zinc tin oxide. in Materials Science in Semiconductor Processing. 2017;71:461-469.
doi:10.1016/j.mssp.2017.09.006 .

Saeedabad, S. Hemmatzadeh, Baratto, C., Rigoni, F., Rozati, S. M., Sberveglieri, G., Vojisavljević, Katarina, Malic, Barbara, "Gas sensing applications of the inverse spinel zinc tin oxide" in Materials Science in Semiconductor Processing, 71 (2017):461-469,
https://doi.org/10.1016/j.mssp.2017.09.006 . .

TY  - JOUR
AU  - Bertoncelj, Barbara
AU  - Vojisavljević, Katarina
AU  - Rihtarsic, J.
AU  - Trefalt, G.
AU  - Huskic, M.
AU  - Zagar, E.
AU  - Malic, Barbara
PY  - 2016
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1019
AB  - Voronoi analysis is implemented to assess the influence of fiber content on the microstructure and mechanical properties of bulk-molding compounds containing different weight fractions of E-glass fibers (EGF) (5-20 wt%). The fiber distribution in the polymer matrix is analyzed by scanning electron microscopy followed by the Voronoi tessellations, radial distribution function and statistical calculations. The experimental results are compared to modelled microstructures. The derived microstructural descriptors allow us to correlate the fiber weight content and the degree of fiber distribution homogeneity with the mechanical properties of EGF-reinforced composites. The distribution of fibers in composites with 10 and 15 wt% of fibers could be considered as the most homogeneous. This is in a good agreement with the results of the flexural strength and dynamic mechanical analyses, which confirmed that the latter samples exhibit the highest level of reinforcement.
PB  - Budapest Univ Technol & Econ, Budapest
T2  - Express Polymer Letters
T1  - A Voronoi-diagram analysis of the microstructures in bulk-molding compounds and its correlation with the mechanical properties
EP  - 505
IS  - 6
SP  - 493
VL  - 10
DO  - 10.3144/expresspolymlett.2016.47
ER  - 

@article{
author = "Bertoncelj, Barbara and Vojisavljević, Katarina and Rihtarsic, J. and Trefalt, G. and Huskic, M. and Zagar, E. and Malic, Barbara",
year = "2016",
abstract = "Voronoi analysis is implemented to assess the influence of fiber content on the microstructure and mechanical properties of bulk-molding compounds containing different weight fractions of E-glass fibers (EGF) (5-20 wt%). The fiber distribution in the polymer matrix is analyzed by scanning electron microscopy followed by the Voronoi tessellations, radial distribution function and statistical calculations. The experimental results are compared to modelled microstructures. The derived microstructural descriptors allow us to correlate the fiber weight content and the degree of fiber distribution homogeneity with the mechanical properties of EGF-reinforced composites. The distribution of fibers in composites with 10 and 15 wt% of fibers could be considered as the most homogeneous. This is in a good agreement with the results of the flexural strength and dynamic mechanical analyses, which confirmed that the latter samples exhibit the highest level of reinforcement.",
publisher = "Budapest Univ Technol & Econ, Budapest",
journal = "Express Polymer Letters",
title = "A Voronoi-diagram analysis of the microstructures in bulk-molding compounds and its correlation with the mechanical properties",
pages = "505-493",
number = "6",
volume = "10",
doi = "10.3144/expresspolymlett.2016.47"
}

Bertoncelj, B., Vojisavljević, K., Rihtarsic, J., Trefalt, G., Huskic, M., Zagar, E.,& Malic, B.. (2016). A Voronoi-diagram analysis of the microstructures in bulk-molding compounds and its correlation with the mechanical properties. in Express Polymer Letters
Budapest Univ Technol & Econ, Budapest., 10(6), 493-505.
https://doi.org/10.3144/expresspolymlett.2016.47

Bertoncelj B, Vojisavljević K, Rihtarsic J, Trefalt G, Huskic M, Zagar E, Malic B. A Voronoi-diagram analysis of the microstructures in bulk-molding compounds and its correlation with the mechanical properties. in Express Polymer Letters. 2016;10(6):493-505.
doi:10.3144/expresspolymlett.2016.47 .

Bertoncelj, Barbara, Vojisavljević, Katarina, Rihtarsic, J., Trefalt, G., Huskic, M., Zagar, E., Malic, Barbara, "A Voronoi-diagram analysis of the microstructures in bulk-molding compounds and its correlation with the mechanical properties" in Express Polymer Letters, 10, no. 6 (2016):493-505,
https://doi.org/10.3144/expresspolymlett.2016.47 . .

TY  - CONF
AU  - Berginc, Marko
AU  - Campa, Andrej
AU  - Vojisavljević, Katarina
AU  - Malic, Barbara
AU  - Panjan, Peter
AU  - Topic, Marko
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/913
AB  - A ceramic target with Ga:In:Sn=4:64:32 metal ratio has been sintered and used for RF sputtering process to develop high quality Ga doped ITO (GITO) transparent conductive oxide layers, particularly for photovoltaic applications. The sputtering parameters (sputtering power, oxygen flow, and substrate temperature) have been varied first and optimized with respect to the resistivity measurements. The layers deposited under optimized conditions were then post-annealed at different temperatures (200 - 500 degrees C) either in the air or in nitrogen atmosphere in order to further improve the conductivity. The deposited 200 nm thick GITO layer has high electron mobility (50 cm(2)/Vs) at relatively low resistivity (0.90 m Omega cm) although the free electron concentration is kept low (1.4x10(20) cm(-3)) to prevent excessive free-carrier absorption. Thus, high transmission of the layer (similar to 80% at 400 - 1500 nm) is obtained.
PB  - Elsevier Science Bv, Amsterdam
C3  - Proceedings of the Emrs 2015 Spring Meeting - Symposium C on Advanced Inorganic Materials and Struct
T1  - Relation between sputtering parameters and optical and electrical properties of Ga doped ITO transparent conductive oxide
EP  - 189
SP  - 183
VL  - 84
DO  - 10.1016/j.egypro.2015.12.312
ER  - 

@conference{
author = "Berginc, Marko and Campa, Andrej and Vojisavljević, Katarina and Malic, Barbara and Panjan, Peter and Topic, Marko",
year = "2015",
abstract = "A ceramic target with Ga:In:Sn=4:64:32 metal ratio has been sintered and used for RF sputtering process to develop high quality Ga doped ITO (GITO) transparent conductive oxide layers, particularly for photovoltaic applications. The sputtering parameters (sputtering power, oxygen flow, and substrate temperature) have been varied first and optimized with respect to the resistivity measurements. The layers deposited under optimized conditions were then post-annealed at different temperatures (200 - 500 degrees C) either in the air or in nitrogen atmosphere in order to further improve the conductivity. The deposited 200 nm thick GITO layer has high electron mobility (50 cm(2)/Vs) at relatively low resistivity (0.90 m Omega cm) although the free electron concentration is kept low (1.4x10(20) cm(-3)) to prevent excessive free-carrier absorption. Thus, high transmission of the layer (similar to 80% at 400 - 1500 nm) is obtained.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Proceedings of the Emrs 2015 Spring Meeting - Symposium C on Advanced Inorganic Materials and Struct",
title = "Relation between sputtering parameters and optical and electrical properties of Ga doped ITO transparent conductive oxide",
pages = "189-183",
volume = "84",
doi = "10.1016/j.egypro.2015.12.312"
}

Berginc, M., Campa, A., Vojisavljević, K., Malic, B., Panjan, P.,& Topic, M.. (2015). Relation between sputtering parameters and optical and electrical properties of Ga doped ITO transparent conductive oxide. in Proceedings of the Emrs 2015 Spring Meeting - Symposium C on Advanced Inorganic Materials and Struct
Elsevier Science Bv, Amsterdam., 84, 183-189.
https://doi.org/10.1016/j.egypro.2015.12.312

Berginc M, Campa A, Vojisavljević K, Malic B, Panjan P, Topic M. Relation between sputtering parameters and optical and electrical properties of Ga doped ITO transparent conductive oxide. in Proceedings of the Emrs 2015 Spring Meeting - Symposium C on Advanced Inorganic Materials and Struct. 2015;84:183-189.
doi:10.1016/j.egypro.2015.12.312 .

Berginc, Marko, Campa, Andrej, Vojisavljević, Katarina, Malic, Barbara, Panjan, Peter, Topic, Marko, "Relation between sputtering parameters and optical and electrical properties of Ga doped ITO transparent conductive oxide" in Proceedings of the Emrs 2015 Spring Meeting - Symposium C on Advanced Inorganic Materials and Struct, 84 (2015):183-189,
https://doi.org/10.1016/j.egypro.2015.12.312 . .

TY  - JOUR
AU  - Bertoncelj, Barbara
AU  - Vojisavljević, Katarina
AU  - Vrabelj, Marko
AU  - Malic, Barbara
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/911
AB  - The influence of the fraction of the glass-fiber (EGF) reinforcement, from 0 to 15 wt%, on the thermal properties of the polymer-matrix composites with the CaCO3 mineral filler is studied. The proper ratio of glass-fibers and mineral filler is important for obtaining good mechanical, and at the same time good thermal properties of the composites used in production of high-quality components in electro industry. For this purpose, the thermal stability and the thermal properties of the fiber-reinforced composites are determined from a set of different characterization techniques and linked with the microstructural changes induced by the different fiber content. The composites are stable upon heating to 260 degrees C, and undergo thermal oxidation between 280 and 560 degrees C, as found by thermogravimetric and differential thermal analysis. The specific heat capacity, C-p, of the composites slightly increases with increasing EGF content for 0 to 10 wt% EGF, with respective values 0.899 J/gK and 0.903 J/gK at 20 degrees C. Slightly lower Cp values of the composite with 15 wt% EGF could be related to a non-uniform distribution of EGF and presence of voids evidenced by scanning electron microscopy. Thermal conductivity of the composites decreases with increasing EGF content from 0.960(6) W/mK to 0.878(2) W/mK for 0 and 15 wt% EGF, respectively.
PB  - Soc Microelectronics, Electron Components Materials-Midem, Ljubljjana
T2  - Informacije Midem-Journal of Microelectronics Electronic Components and Materials
T1  - Thermal properties of polymer-matrix composites reinforced with E-glass fibers
EP  - 221
IS  - 3
SP  - 216
VL  - 45
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_911
ER  - 

@article{
author = "Bertoncelj, Barbara and Vojisavljević, Katarina and Vrabelj, Marko and Malic, Barbara",
year = "2015",
abstract = "The influence of the fraction of the glass-fiber (EGF) reinforcement, from 0 to 15 wt%, on the thermal properties of the polymer-matrix composites with the CaCO3 mineral filler is studied. The proper ratio of glass-fibers and mineral filler is important for obtaining good mechanical, and at the same time good thermal properties of the composites used in production of high-quality components in electro industry. For this purpose, the thermal stability and the thermal properties of the fiber-reinforced composites are determined from a set of different characterization techniques and linked with the microstructural changes induced by the different fiber content. The composites are stable upon heating to 260 degrees C, and undergo thermal oxidation between 280 and 560 degrees C, as found by thermogravimetric and differential thermal analysis. The specific heat capacity, C-p, of the composites slightly increases with increasing EGF content for 0 to 10 wt% EGF, with respective values 0.899 J/gK and 0.903 J/gK at 20 degrees C. Slightly lower Cp values of the composite with 15 wt% EGF could be related to a non-uniform distribution of EGF and presence of voids evidenced by scanning electron microscopy. Thermal conductivity of the composites decreases with increasing EGF content from 0.960(6) W/mK to 0.878(2) W/mK for 0 and 15 wt% EGF, respectively.",
publisher = "Soc Microelectronics, Electron Components Materials-Midem, Ljubljjana",
journal = "Informacije Midem-Journal of Microelectronics Electronic Components and Materials",
title = "Thermal properties of polymer-matrix composites reinforced with E-glass fibers",
pages = "221-216",
number = "3",
volume = "45",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_911"
}

Bertoncelj, B., Vojisavljević, K., Vrabelj, M.,& Malic, B.. (2015). Thermal properties of polymer-matrix composites reinforced with E-glass fibers. in Informacije Midem-Journal of Microelectronics Electronic Components and Materials
Soc Microelectronics, Electron Components Materials-Midem, Ljubljjana., 45(3), 216-221.
https://hdl.handle.net/21.15107/rcub_rimsi_911

Bertoncelj B, Vojisavljević K, Vrabelj M, Malic B. Thermal properties of polymer-matrix composites reinforced with E-glass fibers. in Informacije Midem-Journal of Microelectronics Electronic Components and Materials. 2015;45(3):216-221.
https://hdl.handle.net/21.15107/rcub_rimsi_911 .

Bertoncelj, Barbara, Vojisavljević, Katarina, Vrabelj, Marko, Malic, Barbara, "Thermal properties of polymer-matrix composites reinforced with E-glass fibers" in Informacije Midem-Journal of Microelectronics Electronic Components and Materials, 45, no. 3 (2015):216-221,
https://hdl.handle.net/21.15107/rcub_rimsi_911 .

TY  - JOUR
AU  - Baratto, C.
AU  - Kumar, R.
AU  - Faglia, G.
AU  - Vojisavljević, Katarina
AU  - Malic, Barbara
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/890
AB  - In this study we deposited new, ternary thin films of copper aluminum oxide with p-type and n-type behavior using RF magnetron sputtering for use as chemical gas sensors. p-Type materials are known to be good catalysts and can be combined with the well-known n-type materials for chemiresistive sensors application. Copper aluminum oxide in the delafossite phase CuAlO2 is a ternary oxide that has generated interest as a transparent p-type conducting material, while in the spinel phase CuAl2O4 is known to be n-type. We demonstrated that thin films of copper aluminum oxide with the proper resistance can be successfully applied as p-and n-type resistive gas sensors for ozone detection. We have studied the sputtering deposition conditions from a CuAlO2 sintered target by changing the substrate temperature in inert Ar atmosphere. In addition, post-deposition annealing in O-2 atmospheres was also tested. XRD, SEM and Raman investigations were used to characterize the thin films. Selected films with mixed phases of CuAlO2, CuAl2O4 and CuO were tested for gas sensing as resistive chemical sensors, showing promising results with ozone, acetone and ethanol.
PB  - Elsevier Science Sa, Lausanne
T2  - Sensors and Actuators B-Chemical
T1  - p-Type copper aluminum oxide thin films for gas-sensing applications
EP  - 296
SP  - 287
VL  - 209
DO  - 10.1016/j.snb.2014.11.116
ER  - 

@article{
author = "Baratto, C. and Kumar, R. and Faglia, G. and Vojisavljević, Katarina and Malic, Barbara",
year = "2015",
abstract = "In this study we deposited new, ternary thin films of copper aluminum oxide with p-type and n-type behavior using RF magnetron sputtering for use as chemical gas sensors. p-Type materials are known to be good catalysts and can be combined with the well-known n-type materials for chemiresistive sensors application. Copper aluminum oxide in the delafossite phase CuAlO2 is a ternary oxide that has generated interest as a transparent p-type conducting material, while in the spinel phase CuAl2O4 is known to be n-type. We demonstrated that thin films of copper aluminum oxide with the proper resistance can be successfully applied as p-and n-type resistive gas sensors for ozone detection. We have studied the sputtering deposition conditions from a CuAlO2 sintered target by changing the substrate temperature in inert Ar atmosphere. In addition, post-deposition annealing in O-2 atmospheres was also tested. XRD, SEM and Raman investigations were used to characterize the thin films. Selected films with mixed phases of CuAlO2, CuAl2O4 and CuO were tested for gas sensing as resistive chemical sensors, showing promising results with ozone, acetone and ethanol.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Sensors and Actuators B-Chemical",
title = "p-Type copper aluminum oxide thin films for gas-sensing applications",
pages = "296-287",
volume = "209",
doi = "10.1016/j.snb.2014.11.116"
}

Baratto, C., Kumar, R., Faglia, G., Vojisavljević, K.,& Malic, B.. (2015). p-Type copper aluminum oxide thin films for gas-sensing applications. in Sensors and Actuators B-Chemical
Elsevier Science Sa, Lausanne., 209, 287-296.
https://doi.org/10.1016/j.snb.2014.11.116

Baratto C, Kumar R, Faglia G, Vojisavljević K, Malic B. p-Type copper aluminum oxide thin films for gas-sensing applications. in Sensors and Actuators B-Chemical. 2015;209:287-296.
doi:10.1016/j.snb.2014.11.116 .

Baratto, C., Kumar, R., Faglia, G., Vojisavljević, Katarina, Malic, Barbara, "p-Type copper aluminum oxide thin films for gas-sensing applications" in Sensors and Actuators B-Chemical, 209 (2015):287-296,
https://doi.org/10.1016/j.snb.2014.11.116 . .

TY  - JOUR
AU  - Zaharescu, M.
AU  - Mihaiu, S.
AU  - Toader, A.
AU  - Atkinson, I.
AU  - Calderon-Moreno, J.
AU  - Anastasescu, M.
AU  - Nicolescu, M.
AU  - Duta, M.
AU  - Gartner, M.
AU  - Vojisavljević, Katarina
AU  - Malic, Barbara
AU  - Ivanov, V. A.
AU  - Zaretskaya, E. P.
PY  - 2014
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/816
AB  - The transparent conductive oxide films with controlled type of conduction are of great importance and their preparation is intensively studied. In our work, the preparation of such films based on doped ZnO was realized in order to achieve controlled type of conduction and high concentration of the charge carriers. Sol-gel method was used for films preparation and several dopants were tested (Sn, Li, Ni). Multilayer deposition was performed on several substrates: SiO2/Si wafers, silica-soda-lime and/or silica glasses. The structural and morphological characterization of the obtained films were done by scanning electron microscopy, X-ray diffraction, X-ray fluorescence, X-ray photoelectron spectroscopy and atomic force microscopy respectively, while spectroscopic ellipsometry and transmittance measurements were done for determination of optical properties. The selected samples with the best structural, morphological and optical properties were subjected to electrical measurement (Hall and Seebeck effect). In all studied cases, samples with good adherence and homogeneous morphology as well as monophasic wurtzite type structure were obtained. The optical constants (refractive index and extinction coefficient) were calculated from spectroscopic ellipsometry data using Cauchy model. Films with n- or p-type conduction were obtained depending on the composition, number of deposition and thermal treatment temperature.
PB  - Elsevier Science Sa, Lausanne
T2  - Thin Solid Films
T1  - ZnO based transparent conductive oxide films with controlled type of conduction
EP  - 734
SP  - 727
VL  - 571
DO  - 10.1016/j.tsf.2014.02.090
ER  - 

@article{
author = "Zaharescu, M. and Mihaiu, S. and Toader, A. and Atkinson, I. and Calderon-Moreno, J. and Anastasescu, M. and Nicolescu, M. and Duta, M. and Gartner, M. and Vojisavljević, Katarina and Malic, Barbara and Ivanov, V. A. and Zaretskaya, E. P.",
year = "2014",
abstract = "The transparent conductive oxide films with controlled type of conduction are of great importance and their preparation is intensively studied. In our work, the preparation of such films based on doped ZnO was realized in order to achieve controlled type of conduction and high concentration of the charge carriers. Sol-gel method was used for films preparation and several dopants were tested (Sn, Li, Ni). Multilayer deposition was performed on several substrates: SiO2/Si wafers, silica-soda-lime and/or silica glasses. The structural and morphological characterization of the obtained films were done by scanning electron microscopy, X-ray diffraction, X-ray fluorescence, X-ray photoelectron spectroscopy and atomic force microscopy respectively, while spectroscopic ellipsometry and transmittance measurements were done for determination of optical properties. The selected samples with the best structural, morphological and optical properties were subjected to electrical measurement (Hall and Seebeck effect). In all studied cases, samples with good adherence and homogeneous morphology as well as monophasic wurtzite type structure were obtained. The optical constants (refractive index and extinction coefficient) were calculated from spectroscopic ellipsometry data using Cauchy model. Films with n- or p-type conduction were obtained depending on the composition, number of deposition and thermal treatment temperature.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Thin Solid Films",
title = "ZnO based transparent conductive oxide films with controlled type of conduction",
pages = "734-727",
volume = "571",
doi = "10.1016/j.tsf.2014.02.090"
}

Zaharescu, M., Mihaiu, S., Toader, A., Atkinson, I., Calderon-Moreno, J., Anastasescu, M., Nicolescu, M., Duta, M., Gartner, M., Vojisavljević, K., Malic, B., Ivanov, V. A.,& Zaretskaya, E. P.. (2014). ZnO based transparent conductive oxide films with controlled type of conduction. in Thin Solid Films
Elsevier Science Sa, Lausanne., 571, 727-734.
https://doi.org/10.1016/j.tsf.2014.02.090

Zaharescu M, Mihaiu S, Toader A, Atkinson I, Calderon-Moreno J, Anastasescu M, Nicolescu M, Duta M, Gartner M, Vojisavljević K, Malic B, Ivanov VA, Zaretskaya EP. ZnO based transparent conductive oxide films with controlled type of conduction. in Thin Solid Films. 2014;571:727-734.
doi:10.1016/j.tsf.2014.02.090 .

Zaharescu, M., Mihaiu, S., Toader, A., Atkinson, I., Calderon-Moreno, J., Anastasescu, M., Nicolescu, M., Duta, M., Gartner, M., Vojisavljević, Katarina, Malic, Barbara, Ivanov, V. A., Zaretskaya, E. P., "ZnO based transparent conductive oxide films with controlled type of conduction" in Thin Solid Films, 571 (2014):727-734,
https://doi.org/10.1016/j.tsf.2014.02.090 . .

TY  - JOUR
AU  - Kumar, R.
AU  - Baratto, C.
AU  - Faglia, G.
AU  - Sberveglieri, G.
AU  - Vojisavljević, Katarina
AU  - Malic, Barbara
PY  - 2014
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/797
AB  - An experimental approach for the detection of harmful gases in presence of humidity has been applied for gas sensors based on p-type Cu-Al-Oxide thin films. The impact of deposition conditions on the surface, morphology and sensing properties of the semiconducting oxide thin films are investigated. Cu-Al-Oxide thin film with higher resistance can be applied as p-type resistive gas sensor for the detection of pollutant gases. Thin films were characterized by X-Ray Diffraction, scanning electron microscope, and Raman spectroscopy. We observed that inert atmosphere and deposition temperature play the important role to affect the structural and surface morphology of Cu-Al-Oxide thin films. Sensitivity of nanostructured thin films towards reducing and oxidizing gas are studied as a function of gas concentration and operating temperature.
PB  - Elsevier Science Bv, Amsterdam
T2  - 28th European Conference on Solid-State Transducers (Eurosensors 2014)
T1  - Tailoring and characterization of porous hierarchical nanostructured p type thin film of Cu-Al-Oxide for the detection of pollutant gases
EP  - 255
SP  - 252
VL  - 87
DO  - 10.1016/j.proeng.2014.11.651
ER  - 

@article{
author = "Kumar, R. and Baratto, C. and Faglia, G. and Sberveglieri, G. and Vojisavljević, Katarina and Malic, Barbara",
year = "2014",
abstract = "An experimental approach for the detection of harmful gases in presence of humidity has been applied for gas sensors based on p-type Cu-Al-Oxide thin films. The impact of deposition conditions on the surface, morphology and sensing properties of the semiconducting oxide thin films are investigated. Cu-Al-Oxide thin film with higher resistance can be applied as p-type resistive gas sensor for the detection of pollutant gases. Thin films were characterized by X-Ray Diffraction, scanning electron microscope, and Raman spectroscopy. We observed that inert atmosphere and deposition temperature play the important role to affect the structural and surface morphology of Cu-Al-Oxide thin films. Sensitivity of nanostructured thin films towards reducing and oxidizing gas are studied as a function of gas concentration and operating temperature.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "28th European Conference on Solid-State Transducers (Eurosensors 2014)",
title = "Tailoring and characterization of porous hierarchical nanostructured p type thin film of Cu-Al-Oxide for the detection of pollutant gases",
pages = "255-252",
volume = "87",
doi = "10.1016/j.proeng.2014.11.651"
}

Kumar, R., Baratto, C., Faglia, G., Sberveglieri, G., Vojisavljević, K.,& Malic, B.. (2014). Tailoring and characterization of porous hierarchical nanostructured p type thin film of Cu-Al-Oxide for the detection of pollutant gases. in 28th European Conference on Solid-State Transducers (Eurosensors 2014)
Elsevier Science Bv, Amsterdam., 87, 252-255.
https://doi.org/10.1016/j.proeng.2014.11.651

Kumar R, Baratto C, Faglia G, Sberveglieri G, Vojisavljević K, Malic B. Tailoring and characterization of porous hierarchical nanostructured p type thin film of Cu-Al-Oxide for the detection of pollutant gases. in 28th European Conference on Solid-State Transducers (Eurosensors 2014). 2014;87:252-255.
doi:10.1016/j.proeng.2014.11.651 .

Kumar, R., Baratto, C., Faglia, G., Sberveglieri, G., Vojisavljević, Katarina, Malic, Barbara, "Tailoring and characterization of porous hierarchical nanostructured p type thin film of Cu-Al-Oxide for the detection of pollutant gases" in 28th European Conference on Solid-State Transducers (Eurosensors 2014), 87 (2014):252-255,
https://doi.org/10.1016/j.proeng.2014.11.651 . .

TY  - JOUR
AU  - Vojisavljević, Katarina
AU  - Chevreux, Pierrick
AU  - Jouin, Jenny
AU  - Malic, Barbara
PY  - 2014
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/747
AB  - In this study, we report on the acid-catalysed synthesis of La9.33Si6O26 from lanthanum nitrate or acetate and silicon ethoxide (TEOS) in the ethanol solvent, upon the transition from liquid to amorphous and crystalline phases. The similarity of the Fourier transform infrared spectra of the lanthanum-salt solutions and lanthanum-silicon sols indicates that the lanthanum environment is not changed in the reaction of the La-salt with TEOS. In the nitric-acid catalysed synthesis, the hydrolysis reaction was almost instantaneous, as a consequence of a higher amount of water in this system, which contributed to a high level of chemical heterogeneity in the product. The acetic acid-based synthesis ensured a good mixing of the reagents at the nanometre level, which gave rise to the formation of the pure La9.33Si6O26 powder upon heating at 900 degrees C, and single phase ceramics with 94 % relative density after sintering at 1400 degrees C for 3 h in air, which is 200 degrees C lower temperature then usually reported for the apatite material.
PB  - Slovensko Kemijsko Drustvo, Ljubljana
T2  - Acta Chimica Slovenica
T1  - Characterization of the Alkoxide-based Sol-gel Derived La9.33Si6O26 Powder and Ceramic
EP  - 541
IS  - 3
SP  - 530
VL  - 61
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_747
ER  - 

@article{
author = "Vojisavljević, Katarina and Chevreux, Pierrick and Jouin, Jenny and Malic, Barbara",
year = "2014",
abstract = "In this study, we report on the acid-catalysed synthesis of La9.33Si6O26 from lanthanum nitrate or acetate and silicon ethoxide (TEOS) in the ethanol solvent, upon the transition from liquid to amorphous and crystalline phases. The similarity of the Fourier transform infrared spectra of the lanthanum-salt solutions and lanthanum-silicon sols indicates that the lanthanum environment is not changed in the reaction of the La-salt with TEOS. In the nitric-acid catalysed synthesis, the hydrolysis reaction was almost instantaneous, as a consequence of a higher amount of water in this system, which contributed to a high level of chemical heterogeneity in the product. The acetic acid-based synthesis ensured a good mixing of the reagents at the nanometre level, which gave rise to the formation of the pure La9.33Si6O26 powder upon heating at 900 degrees C, and single phase ceramics with 94 % relative density after sintering at 1400 degrees C for 3 h in air, which is 200 degrees C lower temperature then usually reported for the apatite material.",
publisher = "Slovensko Kemijsko Drustvo, Ljubljana",
journal = "Acta Chimica Slovenica",
title = "Characterization of the Alkoxide-based Sol-gel Derived La9.33Si6O26 Powder and Ceramic",
pages = "541-530",
number = "3",
volume = "61",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_747"
}

Vojisavljević, K., Chevreux, P., Jouin, J.,& Malic, B.. (2014). Characterization of the Alkoxide-based Sol-gel Derived La9.33Si6O26 Powder and Ceramic. in Acta Chimica Slovenica
Slovensko Kemijsko Drustvo, Ljubljana., 61(3), 530-541.
https://hdl.handle.net/21.15107/rcub_rimsi_747

Vojisavljević K, Chevreux P, Jouin J, Malic B. Characterization of the Alkoxide-based Sol-gel Derived La9.33Si6O26 Powder and Ceramic. in Acta Chimica Slovenica. 2014;61(3):530-541.
https://hdl.handle.net/21.15107/rcub_rimsi_747 .

Vojisavljević, Katarina, Chevreux, Pierrick, Jouin, Jenny, Malic, Barbara, "Characterization of the Alkoxide-based Sol-gel Derived La9.33Si6O26 Powder and Ceramic" in Acta Chimica Slovenica, 61, no. 3 (2014):530-541,
https://hdl.handle.net/21.15107/rcub_rimsi_747 .

TY  - CONF
AU  - Vojisavljević, Katarina
AU  - Malic, Barbara
AU  - Mamoru, Senna
AU  - Drnovšek, Silvo
AU  - Kosec, Marija
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2916
AB  - Recently, a considerable effort has been devoted to research and development of n- and p-type transparent conducting oxides (TCO), where the improvement of their properties will give an added impetus in the field of invisible electronics for production of different optoelectronic devices. Due to the lack of p-type oxide semiconductors, with high enough conductivity and transparency across the visible spectrum, special attention has been paid to synthesis of p-type delafossite CuMO2 (M = Al, Cr or Y) materials. Copper aluminate (CuAlO2) thin films prepared by physical vapour deposition from multicomponent sputtering targets exhibit the p-type behaviour and have already been used in various applications in optoelectronics. Besides, the CuAlO2 can be used as a catalyst for the conversion of solar power to hydrogen energy, thermoelectric converter or ozone sensor.
The first step in production of high quality sputtering targets is related to preparation of phase pure powders and dense ceramics.A delafossite CuAlO2 has been usually prepared by conventional solid state synthesis from CuO or Cu2O and Al2O3 powders, where milling in different liquid media with long milling times were at first used to achieve homogeneous reagent mixtures, and then multiple calcinations at high temperatures with intermediate wet-milling steps were applied. However, secondary phases and low relative densities are yet to be improved for the solid-state synthesized delafossite CuAlO2, even when high processing temperatures (1200 – 1350 oC) and extremely long periods have been used. 
The main idea of this work was to promote the reaction of the delafossite CuAlO2 formation during solid state synthesis by changing the usually used Al2O3 with more reactive Al- compounds, such as boehmite (AlOOH). Its exothermic decomposition at low temperatures is expected to improve the conventional solid state synthesis route. The well-mixed powder mixture, consisting of the 1 µm sized Cu2O particles fully covered with fine nano-boehmite rod-like particles, and decomposition of the nano-boehmite powder upon heating have contributed to acceleration of the inherently slow solid state reaction during the double calcination of the powder mixture for 10 h at 1100 oC. The secondary spinel-CuAl2O4 phase has been avoided by calcining the powder mixture in argon atmosphere, where the oxidation of cuprous ions has been precluded. A short sintering time of 2 h at 1100 oC in air atmosphere was essential to obtain single phase CuAlO2 ceramic with 86 % of theoretical density. According to EDXS, traces of Cu-rich impurities were identified only at the surface of the pellet, while the bulk of the sample remained as a single phase delafossite with uniformly distributed porosity. The semiconducting nature of the ceramic sample was confirmed by the temperature dependent dielectric parameters measurements (ε’ and tgδ) in the 10 kHz-1MHz frequency range between 297 and 473 K.
PB  - ECERS, 2013
C3  - Conference of the European Ceramic Society XIII
T1  - Solid state synthesis of CuAlO2: From a nano-boehmite - cuprous oxide powder mixture to the single phase ceramics
EP  - 77
SP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2916
ER  - 

@conference{
author = "Vojisavljević, Katarina and Malic, Barbara and Mamoru, Senna and Drnovšek, Silvo and Kosec, Marija",
year = "2013",
abstract = "Recently, a considerable effort has been devoted to research and development of n- and p-type transparent conducting oxides (TCO), where the improvement of their properties will give an added impetus in the field of invisible electronics for production of different optoelectronic devices. Due to the lack of p-type oxide semiconductors, with high enough conductivity and transparency across the visible spectrum, special attention has been paid to synthesis of p-type delafossite CuMO2 (M = Al, Cr or Y) materials. Copper aluminate (CuAlO2) thin films prepared by physical vapour deposition from multicomponent sputtering targets exhibit the p-type behaviour and have already been used in various applications in optoelectronics. Besides, the CuAlO2 can be used as a catalyst for the conversion of solar power to hydrogen energy, thermoelectric converter or ozone sensor.
The first step in production of high quality sputtering targets is related to preparation of phase pure powders and dense ceramics.A delafossite CuAlO2 has been usually prepared by conventional solid state synthesis from CuO or Cu2O and Al2O3 powders, where milling in different liquid media with long milling times were at first used to achieve homogeneous reagent mixtures, and then multiple calcinations at high temperatures with intermediate wet-milling steps were applied. However, secondary phases and low relative densities are yet to be improved for the solid-state synthesized delafossite CuAlO2, even when high processing temperatures (1200 – 1350 oC) and extremely long periods have been used. 
The main idea of this work was to promote the reaction of the delafossite CuAlO2 formation during solid state synthesis by changing the usually used Al2O3 with more reactive Al- compounds, such as boehmite (AlOOH). Its exothermic decomposition at low temperatures is expected to improve the conventional solid state synthesis route. The well-mixed powder mixture, consisting of the 1 µm sized Cu2O particles fully covered with fine nano-boehmite rod-like particles, and decomposition of the nano-boehmite powder upon heating have contributed to acceleration of the inherently slow solid state reaction during the double calcination of the powder mixture for 10 h at 1100 oC. The secondary spinel-CuAl2O4 phase has been avoided by calcining the powder mixture in argon atmosphere, where the oxidation of cuprous ions has been precluded. A short sintering time of 2 h at 1100 oC in air atmosphere was essential to obtain single phase CuAlO2 ceramic with 86 % of theoretical density. According to EDXS, traces of Cu-rich impurities were identified only at the surface of the pellet, while the bulk of the sample remained as a single phase delafossite with uniformly distributed porosity. The semiconducting nature of the ceramic sample was confirmed by the temperature dependent dielectric parameters measurements (ε’ and tgδ) in the 10 kHz-1MHz frequency range between 297 and 473 K.",
publisher = "ECERS, 2013",
journal = "Conference of the European Ceramic Society XIII",
title = "Solid state synthesis of CuAlO2: From a nano-boehmite - cuprous oxide powder mixture to the single phase ceramics",
pages = "77-77",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2916"
}

Vojisavljević, K., Malic, B., Mamoru, S., Drnovšek, S.,& Kosec, M.. (2013). Solid state synthesis of CuAlO2: From a nano-boehmite - cuprous oxide powder mixture to the single phase ceramics. in Conference of the European Ceramic Society XIII
ECERS, 2013., 77-77.
https://hdl.handle.net/21.15107/rcub_rimsi_2916

Vojisavljević K, Malic B, Mamoru S, Drnovšek S, Kosec M. Solid state synthesis of CuAlO2: From a nano-boehmite - cuprous oxide powder mixture to the single phase ceramics. in Conference of the European Ceramic Society XIII. 2013;:77-77.
https://hdl.handle.net/21.15107/rcub_rimsi_2916 .

Vojisavljević, Katarina, Malic, Barbara, Mamoru, Senna, Drnovšek, Silvo, Kosec, Marija, "Solid state synthesis of CuAlO2: From a nano-boehmite - cuprous oxide powder mixture to the single phase ceramics" in Conference of the European Ceramic Society XIII (2013):77-77,
https://hdl.handle.net/21.15107/rcub_rimsi_2916 .

TY  - JOUR
AU  - Vojisavljević, Katarina
AU  - Malic, Barbara
AU  - Senna, M.
AU  - Drnovsek, S.
AU  - Kosec, M.
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/733
AB  - The delafossite CuAlO2 powder was prepared from the nano-boehmite AlOO center dot xH(2)O and Cu2O by the solid state synthesis at 1100 degrees C in argon. The inherently slow solid state reaction was accelerated by introducing rod-like boehmite nano-particles which fully covered the 1 mu m sized Cu2O particles in the reactant mixture, and decomposition of the nano-boehmite upon calcination. In contrast, the reaction between the Cu2O and Al2O3, introduced as a reference, resulted in mixed phases under the same experimental conditions. Sintering of the nano-boehmite derived CuAlO2 powder compact at 1100 degrees C for 2 h in air resulted in the delafossite ceramic with 86% of theoretical density, without any impurities detectable by X-ray diffraction analysis. The analysis of the microstructure by scanning electron microscopy confirmed that the bulk of the sintered sample was delafossite phase with uniformly distributed porosity, with only traces of Cu-rich impurities at the surface.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics
EP  - 3241
IS  - 15-16
SP  - 3231
VL  - 33
DO  - 10.1016/j.jeurceramsoc.2013.05.025
ER  - 

@article{
author = "Vojisavljević, Katarina and Malic, Barbara and Senna, M. and Drnovsek, S. and Kosec, M.",
year = "2013",
abstract = "The delafossite CuAlO2 powder was prepared from the nano-boehmite AlOO center dot xH(2)O and Cu2O by the solid state synthesis at 1100 degrees C in argon. The inherently slow solid state reaction was accelerated by introducing rod-like boehmite nano-particles which fully covered the 1 mu m sized Cu2O particles in the reactant mixture, and decomposition of the nano-boehmite upon calcination. In contrast, the reaction between the Cu2O and Al2O3, introduced as a reference, resulted in mixed phases under the same experimental conditions. Sintering of the nano-boehmite derived CuAlO2 powder compact at 1100 degrees C for 2 h in air resulted in the delafossite ceramic with 86% of theoretical density, without any impurities detectable by X-ray diffraction analysis. The analysis of the microstructure by scanning electron microscopy confirmed that the bulk of the sintered sample was delafossite phase with uniformly distributed porosity, with only traces of Cu-rich impurities at the surface.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics",
pages = "3241-3231",
number = "15-16",
volume = "33",
doi = "10.1016/j.jeurceramsoc.2013.05.025"
}

Vojisavljević, K., Malic, B., Senna, M., Drnovsek, S.,& Kosec, M.. (2013). Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 33(15-16), 3231-3241.
https://doi.org/10.1016/j.jeurceramsoc.2013.05.025

Vojisavljević K, Malic B, Senna M, Drnovsek S, Kosec M. Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics. in Journal of the European Ceramic Society. 2013;33(15-16):3231-3241.
doi:10.1016/j.jeurceramsoc.2013.05.025 .

Vojisavljević, Katarina, Malic, Barbara, Senna, M., Drnovsek, S., Kosec, M., "Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics" in Journal of the European Ceramic Society, 33, no. 15-16 (2013):3231-3241,
https://doi.org/10.1016/j.jeurceramsoc.2013.05.025 . .