TY  - CONF
AU  - Radović, Ivana M.
AU  - Stajčić, Aleksandar P.
AU  - Mitić, Vojislav V.
AU  - Serpa, Cristina
AU  - Paunović, Vesna
AU  - Ranđelović, Branislav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10019
AB  - In the past century, the use of polymers and composites with a polymer matrix has expanded to such a level that today it is impossible to imagine life without these materials. Epoxy resin and epoxy-based composites are widely used as construction materials, due to their excellent adhesion, thermal and chemical stability. Fractal nature analysis can provide insight in morphological changes at fiber-matrix interface level, which could give direction for the processing of composites. This mathematical technique can be performed on field emission scanning electron microscopy (FESEM) images, by identifying fiber phase and pores shapes and boundaries, as well as fiber-matrix bonding at the interface. In this study, fiberglass mat was used for the reinforcement of epoxy. FESEM image of enlarged fiber after the composite fracture was used for the reconstruction of data. With the use of affine fractal regression model, software Fractal Real Finder was employed for the reconstruction of fiber shape and the determination of Hausdorff dimension. © 2021 IEEE.
C3  - Proceedings of the International Conference on Microelectronics, ICM
T1  - Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure
VL  - September
SP  - 203
EP  - 206
DO  - 10.1109/MIEL52794.2021.9569054
ER  - 

@conference{
author = "Radović, Ivana M. and Stajčić, Aleksandar P. and Mitić, Vojislav V. and Serpa, Cristina and Paunović, Vesna and Ranđelović, Branislav",
year = "2021",
abstract = "In the past century, the use of polymers and composites with a polymer matrix has expanded to such a level that today it is impossible to imagine life without these materials. Epoxy resin and epoxy-based composites are widely used as construction materials, due to their excellent adhesion, thermal and chemical stability. Fractal nature analysis can provide insight in morphological changes at fiber-matrix interface level, which could give direction for the processing of composites. This mathematical technique can be performed on field emission scanning electron microscopy (FESEM) images, by identifying fiber phase and pores shapes and boundaries, as well as fiber-matrix bonding at the interface. In this study, fiberglass mat was used for the reinforcement of epoxy. FESEM image of enlarged fiber after the composite fracture was used for the reconstruction of data. With the use of affine fractal regression model, software Fractal Real Finder was employed for the reconstruction of fiber shape and the determination of Hausdorff dimension. © 2021 IEEE.",
journal = "Proceedings of the International Conference on Microelectronics, ICM",
title = "Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure",
volume = "September",
pages = "203-206",
doi = "10.1109/MIEL52794.2021.9569054"
}

Radović, I. M., Stajčić, A. P., Mitić, V. V., Serpa, C., Paunović, V.,& Ranđelović, B.. (2021). Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure. in Proceedings of the International Conference on Microelectronics, ICM, September, 203-206.
https://doi.org/10.1109/MIEL52794.2021.9569054

Radović IM, Stajčić AP, Mitić VV, Serpa C, Paunović V, Ranđelović B. Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure. in Proceedings of the International Conference on Microelectronics, ICM. 2021;September:203-206.
doi:10.1109/MIEL52794.2021.9569054 .

Radović, Ivana M., Stajčić, Aleksandar P., Mitić, Vojislav V., Serpa, Cristina, Paunović, Vesna, Ranđelović, Branislav, "Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure" in Proceedings of the International Conference on Microelectronics, ICM, September (2021):203-206,
https://doi.org/10.1109/MIEL52794.2021.9569054 . .

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Lu, Chun-An
AU  - Paunović, Vesna
AU  - Radović, Ivana M.
AU  - Stajčić, Aleksandar
AU  - Vlahović, Branislav
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9010
AB  - The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 °C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (αs) and pore size (αp) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors. © 2020 by the authors.
T2  - Applied Sciences
T1  - The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers
VL  - 10
IS  - 10
SP  - 3485
DO  - 10.3390/app10103485
ER  - 

@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Lu, Chun-An and Paunović, Vesna and Radović, Ivana M. and Stajčić, Aleksandar and Vlahović, Branislav",
year = "2020",
abstract = "The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 °C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (αs) and pore size (αp) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors. © 2020 by the authors.",
journal = "Applied Sciences",
title = "The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers",
volume = "10",
number = "10",
pages = "3485",
doi = "10.3390/app10103485"
}

Mitić, V. V., Lazović, G., Lu, C., Paunović, V., Radović, I. M., Stajčić, A.,& Vlahović, B.. (2020). The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers. in Applied Sciences, 10(10), 3485.
https://doi.org/10.3390/app10103485

Mitić VV, Lazović G, Lu C, Paunović V, Radović IM, Stajčić A, Vlahović B. The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers. in Applied Sciences. 2020;10(10):3485.
doi:10.3390/app10103485 .

Mitić, Vojislav V., Lazović, Goran, Lu, Chun-An, Paunović, Vesna, Radović, Ivana M., Stajčić, Aleksandar, Vlahović, Branislav, "The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers" in Applied Sciences, 10, no. 10 (2020):3485,
https://doi.org/10.3390/app10103485 . .

TY  - CONF
AU  - Paunović, Vesna
AU  - Mitić, Vojislav V.
AU  - Kocić, Ljubiša
AU  - Marjanović, Miloš
AU  - Đorđević, Miloš
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/875
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7549
AB  - The influence of rare-earth additive content on microstructure and electric properties of doped BaTiO3 ceramics is investigated. The concentration of Er2O3 and Yb2O3 in the doped samples range from 0.01 to 1.0at % . The samples are prepared by the conventional solid state reaction, and sintered at 1320° and 1350°C in air atmosphere for 4 hours. SEM analysis shows that all samples are characterized by polygonal grains. The uniform and homogeneous microstructure with grain size ranged from 20 to 45μm is the main low doped samples characteristics. For the samples doped with the higher dopant concentration (0.5 and 1.0 at%) the average grains size is ranged from 5 to 10μm. Dielectric measurements are carried out as a function of temperature up to 180°C at different frequencies. The low doped samples display the high value of dielectric permittivity at room temperature. A nearly flat permittivity-temperature response is obtained in specimens with higher additive content. The Curie temperature of doped samples were ranged from 126 to 130°C. The Curie constant for all series of samples decrease with increment of dopant concentration and the lowest values is mesured from samples doped with 0.01 wt% of aditive. The obtained value of γ pointed out that the specimens have almost sharp phase transition. Also, the specific electrical resistance is measured in function of temperature at the different frequencies from 100Hz to 1MHz. With increasing additives concentration, the electrical resistance decreases to the concentration of 0.5 at% and then increases.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 5th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2016; Belgrade
T1  - The Rare-Earths influences on doped BaTiO3-Ceramics Microstructure and Electric Characteristics
SP  - 44
EP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7549
ER  - 

@conference{
author = "Paunović, Vesna and Mitić, Vojislav V. and Kocić, Ljubiša and Marjanović, Miloš and Đorđević, Miloš",
year = "2016",
abstract = "The influence of rare-earth additive content on microstructure and electric properties of doped BaTiO3 ceramics is investigated. The concentration of Er2O3 and Yb2O3 in the doped samples range from 0.01 to 1.0at % . The samples are prepared by the conventional solid state reaction, and sintered at 1320° and 1350°C in air atmosphere for 4 hours. SEM analysis shows that all samples are characterized by polygonal grains. The uniform and homogeneous microstructure with grain size ranged from 20 to 45μm is the main low doped samples characteristics. For the samples doped with the higher dopant concentration (0.5 and 1.0 at%) the average grains size is ranged from 5 to 10μm. Dielectric measurements are carried out as a function of temperature up to 180°C at different frequencies. The low doped samples display the high value of dielectric permittivity at room temperature. A nearly flat permittivity-temperature response is obtained in specimens with higher additive content. The Curie temperature of doped samples were ranged from 126 to 130°C. The Curie constant for all series of samples decrease with increment of dopant concentration and the lowest values is mesured from samples doped with 0.01 wt% of aditive. The obtained value of γ pointed out that the specimens have almost sharp phase transition. Also, the specific electrical resistance is measured in function of temperature at the different frequencies from 100Hz to 1MHz. With increasing additives concentration, the electrical resistance decreases to the concentration of 0.5 at% and then increases.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 5th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2016; Belgrade",
title = "The Rare-Earths influences on doped BaTiO3-Ceramics Microstructure and Electric Characteristics",
pages = "44-44",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7549"
}

Paunović, V., Mitić, V. V., Kocić, L., Marjanović, M.,& Đorđević, M.. (2016). The Rare-Earths influences on doped BaTiO3-Ceramics Microstructure and Electric Characteristics. in Advanced Ceramics and Application : 5th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2016; Belgrade
Belgrade : Serbian Ceramic Society., 44-44.
https://hdl.handle.net/21.15107/rcub_vinar_7549

Paunović V, Mitić VV, Kocić L, Marjanović M, Đorđević M. The Rare-Earths influences on doped BaTiO3-Ceramics Microstructure and Electric Characteristics. in Advanced Ceramics and Application : 5th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2016; Belgrade. 2016;:44-44.
https://hdl.handle.net/21.15107/rcub_vinar_7549 .

Paunović, Vesna, Mitić, Vojislav V., Kocić, Ljubiša, Marjanović, Miloš, Đorđević, Miloš, "The Rare-Earths influences on doped BaTiO3-Ceramics Microstructure and Electric Characteristics" in Advanced Ceramics and Application : 5th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2016; Belgrade (2016):44-44,
https://hdl.handle.net/21.15107/rcub_vinar_7549 .

TY  - CONF
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
AU  - Kosanović, Darko
AU  - Mitrić, Miodrag
AU  - Paunović, Vesna
AU  - Pouchly, V.
AU  - Kachlik, Martin
AU  - Maca, Karel
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7526
AB  - Mechanically activated powders (0, 10, 40, 80 and 160 minutes) were formed by isostatic pressure 300 MPa to cylindrical green bodies (φ 12 mm). First set of samples was sintered at 1300°C for 30 min in air (heating rate 10 °C/min, cooling rate 5 oC/min). These samples were re-sintered at 1200 oC for 20 h in air (heating rate 20 °C/min, cooling rate 10 oC/min). Samples reached almost 90 % TD. The second set of samples was sintered at 1400 °C for 30 in air (heating rate 10 oC/min, cooling rate 5 °C/min). Relative densities increased up to 93 % TD. The samples of absence of open porosity (MTO-10, 40, 80 and 160) were post-sintered by pressure assisted technique Hot Isostatic Pressing (HIP) at 1200 °C for 2 h in argon atmosphere with pressure 200 MPa. The samples increased densities up to 96 % TD for sample MT-160. Electrical measurements were performed in the microwave field of frequency.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 4th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2015; Belgrade
T1  - The effect of Hot Isostatic Pressing on the MT sample densities
SP  - 55
EP  - 55
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7526
ER  - 

@conference{
author = "Filipović, Suzana and Obradović, Nina and Pavlović, Vladimir B. and Kosanović, Darko and Mitrić, Miodrag and Paunović, Vesna and Pouchly, V. and Kachlik, Martin and Maca, Karel",
year = "2015",
abstract = "Mechanically activated powders (0, 10, 40, 80 and 160 minutes) were formed by isostatic pressure 300 MPa to cylindrical green bodies (φ 12 mm). First set of samples was sintered at 1300°C for 30 min in air (heating rate 10 °C/min, cooling rate 5 oC/min). These samples were re-sintered at 1200 oC for 20 h in air (heating rate 20 °C/min, cooling rate 10 oC/min). Samples reached almost 90 % TD. The second set of samples was sintered at 1400 °C for 30 in air (heating rate 10 oC/min, cooling rate 5 °C/min). Relative densities increased up to 93 % TD. The samples of absence of open porosity (MTO-10, 40, 80 and 160) were post-sintered by pressure assisted technique Hot Isostatic Pressing (HIP) at 1200 °C for 2 h in argon atmosphere with pressure 200 MPa. The samples increased densities up to 96 % TD for sample MT-160. Electrical measurements were performed in the microwave field of frequency.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 4th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2015; Belgrade",
title = "The effect of Hot Isostatic Pressing on the MT sample densities",
pages = "55-55",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7526"
}

Filipović, S., Obradović, N., Pavlović, V. B., Kosanović, D., Mitrić, M., Paunović, V., Pouchly, V., Kachlik, M.,& Maca, K.. (2015). The effect of Hot Isostatic Pressing on the MT sample densities. in Advanced Ceramics and Application : 4th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2015; Belgrade
Belgrade : Serbian Ceramic Society., 55-55.
https://hdl.handle.net/21.15107/rcub_vinar_7526

Filipović S, Obradović N, Pavlović VB, Kosanović D, Mitrić M, Paunović V, Pouchly V, Kachlik M, Maca K. The effect of Hot Isostatic Pressing on the MT sample densities. in Advanced Ceramics and Application : 4th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2015; Belgrade. 2015;:55-55.
https://hdl.handle.net/21.15107/rcub_vinar_7526 .

Filipović, Suzana, Obradović, Nina, Pavlović, Vladimir B., Kosanović, Darko, Mitrić, Miodrag, Paunović, Vesna, Pouchly, V., Kachlik, Martin, Maca, Karel, "The effect of Hot Isostatic Pressing on the MT sample densities" in Advanced Ceramics and Application : 4th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2015; Belgrade (2015):55-55,
https://hdl.handle.net/21.15107/rcub_vinar_7526 .

TY  - CONF
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
AU  - Kosanović, Darko
AU  - Mitrić, Miodrag
AU  - Paunović, Vesna
AU  - Pouchly, V.
AU  - Kachlik, Martin
AU  - Maca, Karel
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/614
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7492
AB  - The aim of this paper was investigation of structural and electrical properties of magnesium titanate ceramic obtained mechanochemically and subjected to two stage sintering process. Mixtures of MgO and TiO2 were treated in a planetary ball mill for several time intervals ranging from 0 to 160 minutes. Powders prepared in this way were two stage sintered, at 1400 °C in air in the first stage, and then post-sintered by pressure assisted technique Hot Isostatic Pressing (HIP) at 1280 °C in argon atmosphere with a pressure of 200 MPa. X-ray diffraction was performed in order to established phase composition of obtained ceramics. Densities of sintered samples were measured by Archimedes method. The values of density were over 96 % of theoretical one and pure MgTiO3 phase was observed. Morphology of sintered bodies was investigated by SEM, and micrographs indicate the final sintering stage and very dense ceramics. Electrical measurements were performed in the microwave field of frequency.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade
T1  - Properties of Magnesium Titanate Ceramic Obtained by Two Stage Sintering
SP  - 118
EP  - 118
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7492
ER  - 

@conference{
author = "Filipović, Suzana and Obradović, Nina and Pavlović, Vladimir B. and Kosanović, Darko and Mitrić, Miodrag and Paunović, Vesna and Pouchly, V. and Kachlik, Martin and Maca, Karel",
year = "2014",
abstract = "The aim of this paper was investigation of structural and electrical properties of magnesium titanate ceramic obtained mechanochemically and subjected to two stage sintering process. Mixtures of MgO and TiO2 were treated in a planetary ball mill for several time intervals ranging from 0 to 160 minutes. Powders prepared in this way were two stage sintered, at 1400 °C in air in the first stage, and then post-sintered by pressure assisted technique Hot Isostatic Pressing (HIP) at 1280 °C in argon atmosphere with a pressure of 200 MPa. X-ray diffraction was performed in order to established phase composition of obtained ceramics. Densities of sintered samples were measured by Archimedes method. The values of density were over 96 % of theoretical one and pure MgTiO3 phase was observed. Morphology of sintered bodies was investigated by SEM, and micrographs indicate the final sintering stage and very dense ceramics. Electrical measurements were performed in the microwave field of frequency.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade",
title = "Properties of Magnesium Titanate Ceramic Obtained by Two Stage Sintering",
pages = "118-118",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7492"
}

Filipović, S., Obradović, N., Pavlović, V. B., Kosanović, D., Mitrić, M., Paunović, V., Pouchly, V., Kachlik, M.,& Maca, K.. (2014). Properties of Magnesium Titanate Ceramic Obtained by Two Stage Sintering. in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade
Belgrade : Serbian Ceramic Society., 118-118.
https://hdl.handle.net/21.15107/rcub_vinar_7492

Filipović S, Obradović N, Pavlović VB, Kosanović D, Mitrić M, Paunović V, Pouchly V, Kachlik M, Maca K. Properties of Magnesium Titanate Ceramic Obtained by Two Stage Sintering. in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade. 2014;:118-118.
https://hdl.handle.net/21.15107/rcub_vinar_7492 .

Filipović, Suzana, Obradović, Nina, Pavlović, Vladimir B., Kosanović, Darko, Mitrić, Miodrag, Paunović, Vesna, Pouchly, V., Kachlik, Martin, Maca, Karel, "Properties of Magnesium Titanate Ceramic Obtained by Two Stage Sintering" in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade (2014):118-118,
https://hdl.handle.net/21.15107/rcub_vinar_7492 .

TY  - CONF
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Pavlović, Vladimir B.
AU  - Kosanović, Darko
AU  - Mitrić, Miodrag
AU  - Paunović, Vesna
AU  - Pouchly, V.
AU  - Kachlik, Martin
AU  - Maca, Karel
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/638
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7502
AB  - Poster presented at the III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014
T1  - Properties of Magnesium Titanate Ceramic Obtained by Two Stage Sintering
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7502
ER  - 

@conference{
author = "Filipović, Suzana and Obradović, Nina and Pavlović, Vladimir B. and Kosanović, Darko and Mitrić, Miodrag and Paunović, Vesna and Pouchly, V. and Kachlik, Martin and Maca, Karel",
year = "2014",
abstract = "Poster presented at the III Serbian Ceramic Society Conference, 29th September - 1st October, Belgrade, 2014",
title = "Properties of Magnesium Titanate Ceramic Obtained by Two Stage Sintering",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7502"
}

Filipović, S., Obradović, N., Pavlović, V. B., Kosanović, D., Mitrić, M., Paunović, V., Pouchly, V., Kachlik, M.,& Maca, K.. (2014). Properties of Magnesium Titanate Ceramic Obtained by Two Stage Sintering. .
https://hdl.handle.net/21.15107/rcub_vinar_7502

Filipović S, Obradović N, Pavlović VB, Kosanović D, Mitrić M, Paunović V, Pouchly V, Kachlik M, Maca K. Properties of Magnesium Titanate Ceramic Obtained by Two Stage Sintering. 2014;.
https://hdl.handle.net/21.15107/rcub_vinar_7502 .

Filipović, Suzana, Obradović, Nina, Pavlović, Vladimir B., Kosanović, Darko, Mitrić, Miodrag, Paunović, Vesna, Pouchly, V., Kachlik, Martin, Maca, Karel, "Properties of Magnesium Titanate Ceramic Obtained by Two Stage Sintering" (2014),
https://hdl.handle.net/21.15107/rcub_vinar_7502 .

TY  - CONF
AU  - Paunović, Vesna
AU  - Mitić, Vojislav V.
AU  - Živković, Ljiljana
AU  - Kocić, Ljubiša
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/595
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7488
AB  - The samples of Sm/Mn codoped BaTiO3 ceramics, prepared by conventional solid state procedure with dopant concentrations ranged from 0.1 up to 5.0 at%, were investigated in this paper. The specimens were sintered at 1290°C and 1350°C in an air atmosphere for two hours. The low doped samples demonstrated the mainly uniform and homogeneous microstructure with average grain sizes ranged from 0.3 μm to 5.0 μm. The appearances of secondary abnormal grains in fine grain matrix and core-shell structure were observed in highly doped Sm/BaTiO3 sintered at 1350°C. Dielectric measurements were carried out as a function of temperature up to 200°C. The low doped samples, sintered at 1350°C, display the high value of dielectric permittivity (εr=6800 ) at room temperature. A nearly flat permittivity-response was obtained in specimens with 5.0 at% additive content. Using a modified Curie-Weiss low the Curie-like constant C´ and a critical exponent γ were calculated. The obtained values of γ pointed out the diffuse phase transformation in heavily doped BaTiO3 samples.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade
T1  - Influence of Sm2O3 on the Microstructure and Dielectric Characteristics of Codoped BaTiO3 Ceramics
SP  - 62
EP  - 62
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7488
ER  - 

@conference{
author = "Paunović, Vesna and Mitić, Vojislav V. and Živković, Ljiljana and Kocić, Ljubiša",
year = "2014",
abstract = "The samples of Sm/Mn codoped BaTiO3 ceramics, prepared by conventional solid state procedure with dopant concentrations ranged from 0.1 up to 5.0 at%, were investigated in this paper. The specimens were sintered at 1290°C and 1350°C in an air atmosphere for two hours. The low doped samples demonstrated the mainly uniform and homogeneous microstructure with average grain sizes ranged from 0.3 μm to 5.0 μm. The appearances of secondary abnormal grains in fine grain matrix and core-shell structure were observed in highly doped Sm/BaTiO3 sintered at 1350°C. Dielectric measurements were carried out as a function of temperature up to 200°C. The low doped samples, sintered at 1350°C, display the high value of dielectric permittivity (εr=6800 ) at room temperature. A nearly flat permittivity-response was obtained in specimens with 5.0 at% additive content. Using a modified Curie-Weiss low the Curie-like constant C´ and a critical exponent γ were calculated. The obtained values of γ pointed out the diffuse phase transformation in heavily doped BaTiO3 samples.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade",
title = "Influence of Sm2O3 on the Microstructure and Dielectric Characteristics of Codoped BaTiO3 Ceramics",
pages = "62-62",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7488"
}

Paunović, V., Mitić, V. V., Živković, L.,& Kocić, L.. (2014). Influence of Sm2O3 on the Microstructure and Dielectric Characteristics of Codoped BaTiO3 Ceramics. in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade
Belgrade : Serbian Ceramic Society., 62-62.
https://hdl.handle.net/21.15107/rcub_vinar_7488

Paunović V, Mitić VV, Živković L, Kocić L. Influence of Sm2O3 on the Microstructure and Dielectric Characteristics of Codoped BaTiO3 Ceramics. in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade. 2014;:62-62.
https://hdl.handle.net/21.15107/rcub_vinar_7488 .

Paunović, Vesna, Mitić, Vojislav V., Živković, Ljiljana, Kocić, Ljubiša, "Influence of Sm2O3 on the Microstructure and Dielectric Characteristics of Codoped BaTiO3 Ceramics" in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade (2014):62-62,
https://hdl.handle.net/21.15107/rcub_vinar_7488 .

TY  - JOUR
AU  - Paunović, Vesna
AU  - Mitić, Vojislav V.
AU  - Prijić, Z.
AU  - Živković, Ljiljana
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/563
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7479
AB  - Dy/Mn doped BaTiO3 with different Dy2O3 contents, ranging from 0.1 to 5.0 at% Dy, were investigated regarding their microstructural and dielectric characteristics. The content of 0.05 at% Mn was constant in all the investigated samples. The samples were prepared by the conventional solid state reaction and sintered at 1290°, and 1350 °C in air atmosphere for 2 h. The low doped samples (0.1 and 0.5 at% Dy) exhibit mainly fairly uniform and homogeneous microstructure with average grain sizes ranged from 0.3 μm to 3.0 μm. At 1350 °C, the appearance of secondary, abnormal, grains in the fine grain matrix and core–shell structure were observed in highly doped Dy/BaTiO3. Dielectric measurements were carried out as a function of temperature up to 180 °C. The low doped samples sintered at 1350 °C, display the high value of dielectric permittivity at room temperature, 5600 for 0.1Dy/BaTiO3. A nearly flat permittivity–temperature response was obtained in specimens with 2.0 and 5.0 at% additive content. Using a Curie–Weiss and modified Curie–Weiss low, the Curie constant (C), Curie like constant (C′), Curie temperature (TC) and a critical exponent (γ) were calculated. The obtained values of γ pointed out the diffuse phase transformation in highly doped BaTiO3 samples.
PB  - Elsevier
T2  - Ceramics International
T1  - Microstructure and dielectric properties of Dy/Mn doped BaTiO3 ceramics
SP  - 4277
EP  - 4284
DO  - 10.1016/j.ceramint.2013.08.092
ER  - 

@article{
author = "Paunović, Vesna and Mitić, Vojislav V. and Prijić, Z. and Živković, Ljiljana",
year = "2014",
abstract = "Dy/Mn doped BaTiO3 with different Dy2O3 contents, ranging from 0.1 to 5.0 at% Dy, were investigated regarding their microstructural and dielectric characteristics. The content of 0.05 at% Mn was constant in all the investigated samples. The samples were prepared by the conventional solid state reaction and sintered at 1290°, and 1350 °C in air atmosphere for 2 h. The low doped samples (0.1 and 0.5 at% Dy) exhibit mainly fairly uniform and homogeneous microstructure with average grain sizes ranged from 0.3 μm to 3.0 μm. At 1350 °C, the appearance of secondary, abnormal, grains in the fine grain matrix and core–shell structure were observed in highly doped Dy/BaTiO3. Dielectric measurements were carried out as a function of temperature up to 180 °C. The low doped samples sintered at 1350 °C, display the high value of dielectric permittivity at room temperature, 5600 for 0.1Dy/BaTiO3. A nearly flat permittivity–temperature response was obtained in specimens with 2.0 and 5.0 at% additive content. Using a Curie–Weiss and modified Curie–Weiss low, the Curie constant (C), Curie like constant (C′), Curie temperature (TC) and a critical exponent (γ) were calculated. The obtained values of γ pointed out the diffuse phase transformation in highly doped BaTiO3 samples.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Microstructure and dielectric properties of Dy/Mn doped BaTiO3 ceramics",
pages = "4277-4284",
doi = "10.1016/j.ceramint.2013.08.092"
}

Paunović, V., Mitić, V. V., Prijić, Z.,& Živković, L.. (2014). Microstructure and dielectric properties of Dy/Mn doped BaTiO3 ceramics. in Ceramics International
Elsevier., 4277-4284.
https://doi.org/10.1016/j.ceramint.2013.08.092

Paunović V, Mitić VV, Prijić Z, Živković L. Microstructure and dielectric properties of Dy/Mn doped BaTiO3 ceramics. in Ceramics International. 2014;:4277-4284.
doi:10.1016/j.ceramint.2013.08.092 .

Paunović, Vesna, Mitić, Vojislav V., Prijić, Z., Živković, Ljiljana, "Microstructure and dielectric properties of Dy/Mn doped BaTiO3 ceramics" in Ceramics International (2014):4277-4284,
https://doi.org/10.1016/j.ceramint.2013.08.092 . .

TY  - CONF
AU  - Marjanović, Miloš
AU  - Đorđević, Miloš
AU  - Paunović, Vesna
AU  - Mitić, Vojislav V.
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/609
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7490
AB  - The Nb doped BaTiO3 ceramics, with different Nb2O5 content, ranging from 0.5 to 2.0 at% Nb, were investigated regarding their electrical characteristics in this paper. Nb/BaTiO3 ceramics using in this investigation were prepared by the conventional solid state reaction and sintered at 1320°C in an air atmosphere for 2 hours. The dielectric characteristic of doped BaTiO3 ceramics like as dielectric constant, dissipation factor, impedance (resistance, reactance) have been done by using LCR-Meter Agilent 4284A in the frequency range 20 Hz-1 MHz and Agilent E4991A RF Impedance/Material Analyzer for high frequency measurements (1 MHz – 3 GHz). Dielectric constant and tangent losses after initial large values remains nearly independent of frequency greater than 3 kHz. Dielectric measurements were carried out as a function of temperature up to 180°C. The low doped samples sintered at 1320°C, display the high value of dielectric permittivity at room temperature, 2600 for 0.5Nb/BaTiO3. A nearly flat permittivity-temperature response was obtained in specimens with 2.0 at% additive content. The Curie-Weiss and modified Curie-Weiss law is used to clarify the influence of dopant on the dielectric properties and BaTiO3 phase transformation. All investigated samples have an electrical resistivity ρ >105 Ωcm at room temperature.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade
T1  - The Electrical Characteristics of Nb doped BaTiO3 Ceramics
SP  - 105
EP  - 105
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7490
ER  - 

@conference{
author = "Marjanović, Miloš and Đorđević, Miloš and Paunović, Vesna and Mitić, Vojislav V.",
year = "2014",
abstract = "The Nb doped BaTiO3 ceramics, with different Nb2O5 content, ranging from 0.5 to 2.0 at% Nb, were investigated regarding their electrical characteristics in this paper. Nb/BaTiO3 ceramics using in this investigation were prepared by the conventional solid state reaction and sintered at 1320°C in an air atmosphere for 2 hours. The dielectric characteristic of doped BaTiO3 ceramics like as dielectric constant, dissipation factor, impedance (resistance, reactance) have been done by using LCR-Meter Agilent 4284A in the frequency range 20 Hz-1 MHz and Agilent E4991A RF Impedance/Material Analyzer for high frequency measurements (1 MHz – 3 GHz). Dielectric constant and tangent losses after initial large values remains nearly independent of frequency greater than 3 kHz. Dielectric measurements were carried out as a function of temperature up to 180°C. The low doped samples sintered at 1320°C, display the high value of dielectric permittivity at room temperature, 2600 for 0.5Nb/BaTiO3. A nearly flat permittivity-temperature response was obtained in specimens with 2.0 at% additive content. The Curie-Weiss and modified Curie-Weiss law is used to clarify the influence of dopant on the dielectric properties and BaTiO3 phase transformation. All investigated samples have an electrical resistivity ρ >105 Ωcm at room temperature.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade",
title = "The Electrical Characteristics of Nb doped BaTiO3 Ceramics",
pages = "105-105",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7490"
}

Marjanović, M., Đorđević, M., Paunović, V.,& Mitić, V. V.. (2014). The Electrical Characteristics of Nb doped BaTiO3 Ceramics. in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade
Belgrade : Serbian Ceramic Society., 105-105.
https://hdl.handle.net/21.15107/rcub_vinar_7490

Marjanović M, Đorđević M, Paunović V, Mitić VV. The Electrical Characteristics of Nb doped BaTiO3 Ceramics. in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade. 2014;:105-105.
https://hdl.handle.net/21.15107/rcub_vinar_7490 .

Marjanović, Miloš, Đorđević, Miloš, Paunović, Vesna, Mitić, Vojislav V., "The Electrical Characteristics of Nb doped BaTiO3 Ceramics" in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade (2014):105-105,
https://hdl.handle.net/21.15107/rcub_vinar_7490 .

TY  - CONF
AU  - Paunović, Vesna
AU  - Mitić, Vojislav V.
AU  - Miljković, Miroslav
AU  - Živković, Ljiljana
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/412
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7425
AB  - The Er doped BaTiO3 ceramics, with different Er2O3 content, ranging from 0.01 to 1.0 wt% Er, were investigated regarding their microstructural and dielectric characteristics in this paper. Doped BaTiO3 were prepared by using conventional method of solid state sintering at 1380 °C for four hours. SEM analysis of Er/BaTiO3 doped ceramics showed that in samples doped with a rareearth ions low level, the grain size ranged from 20-40 μm, while with the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged between 2-10μm. Dielectric measurements were carried out as a function of temperature up to180°C at different frequencies. The low doped samples sintered at 1380 °C, display the high value of dielectric permittivity at room temperature, 2160 for 0.01 Er/BaTiO3. A nearly flat permittivity-response was obtained in specimens with higher additive content. Using a Curie-Weiss low and modified Curie-Weiss low the Curie constant C, Curie temperature Tc and a critical exponent of nonlinearity γ were calculated. The Curie temperature of doped samples were ranged from 126 to 130 °C. The Curie constant for all series of samples decrease with increase of dopant concentration and the lowest values were mesured from samples doped with 0.01 wt% of aditive. The obtained value of γ pointed out that the specimens have almost sharp phase transition.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade
T1  - Microstructure evolution and phase transition in Er doped BaTiO3 ceramics
SP  - 20
EP  - 20
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7425
ER  - 

@conference{
author = "Paunović, Vesna and Mitić, Vojislav V. and Miljković, Miroslav and Živković, Ljiljana",
year = "2013",
abstract = "The Er doped BaTiO3 ceramics, with different Er2O3 content, ranging from 0.01 to 1.0 wt% Er, were investigated regarding their microstructural and dielectric characteristics in this paper. Doped BaTiO3 were prepared by using conventional method of solid state sintering at 1380 °C for four hours. SEM analysis of Er/BaTiO3 doped ceramics showed that in samples doped with a rareearth ions low level, the grain size ranged from 20-40 μm, while with the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged between 2-10μm. Dielectric measurements were carried out as a function of temperature up to180°C at different frequencies. The low doped samples sintered at 1380 °C, display the high value of dielectric permittivity at room temperature, 2160 for 0.01 Er/BaTiO3. A nearly flat permittivity-response was obtained in specimens with higher additive content. Using a Curie-Weiss low and modified Curie-Weiss low the Curie constant C, Curie temperature Tc and a critical exponent of nonlinearity γ were calculated. The Curie temperature of doped samples were ranged from 126 to 130 °C. The Curie constant for all series of samples decrease with increase of dopant concentration and the lowest values were mesured from samples doped with 0.01 wt% of aditive. The obtained value of γ pointed out that the specimens have almost sharp phase transition.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade",
title = "Microstructure evolution and phase transition in Er doped BaTiO3 ceramics",
pages = "20-20",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7425"
}

Paunović, V., Mitić, V. V., Miljković, M.,& Živković, L.. (2013). Microstructure evolution and phase transition in Er doped BaTiO3 ceramics. in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade
Belgrade : Serbian Ceramic Society., 20-20.
https://hdl.handle.net/21.15107/rcub_vinar_7425

Paunović V, Mitić VV, Miljković M, Živković L. Microstructure evolution and phase transition in Er doped BaTiO3 ceramics. in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade. 2013;:20-20.
https://hdl.handle.net/21.15107/rcub_vinar_7425 .

Paunović, Vesna, Mitić, Vojislav V., Miljković, Miroslav, Živković, Ljiljana, "Microstructure evolution and phase transition in Er doped BaTiO3 ceramics" in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade (2013):20-20,
https://hdl.handle.net/21.15107/rcub_vinar_7425 .

TY  - CONF
AU  - Paunović, Vesna
AU  - Mitić, Vojislav V.
AU  - Živković, Ljiljana
AU  - Miljković, Miroslav
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/526
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7469
AB  - Doped BaTiO3-ceramics is very interesting for its application as resistors with PTCR, multilayer ceramics capacitors, thermal sensors etc. Ho doped BaTiO3 ceramics, with different Ho2O3 content, ranging from 0.01 to 1.0 wt% Ho, were investigated regarding their microstructural and dielectric characteristics. The samples were prepared by the conventional solid state reaction and sintered at 1320°, 1350 °C and 1380°C in an air atmosphere for 4 hours. The grain size and microstructure characteristics for various samples and their phase composition were carried out using a scanning electron microscope SEM equipped with EDS system. SEM analysis of Ho/BaTiO3 doped ceramics showed that in samples doped with a low level of rare-earth ions, the grain size ranged from 10-40mm, while with the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged between 2-10μm. Dielectric measurements were carried out as a function of temperature up to180°C. The low doped samples sintered at 1380°C, display the high value of dielectric permittivity at room temperature, 2500 for 0.01Ho/BaTiO3. A nearly flat permittivity-response was obtained in specimens with higher additive content. Using a modified Curie-Weiss low the Curie constant (C/) and a critical exponent γ were calculated. The obtained values of γ pointed out the diffuse phase transformation in heavily doped BaTiO3 samples.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
T1  - Ho2O3 Additive Effects on Microstructure and Dielectrical Properties of BaTiO3 Ceramics
SP  - 10
EP  - 10
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7469
ER  - 

@conference{
author = "Paunović, Vesna and Mitić, Vojislav V. and Živković, Ljiljana and Miljković, Miroslav",
year = "2012",
abstract = "Doped BaTiO3-ceramics is very interesting for its application as resistors with PTCR, multilayer ceramics capacitors, thermal sensors etc. Ho doped BaTiO3 ceramics, with different Ho2O3 content, ranging from 0.01 to 1.0 wt% Ho, were investigated regarding their microstructural and dielectric characteristics. The samples were prepared by the conventional solid state reaction and sintered at 1320°, 1350 °C and 1380°C in an air atmosphere for 4 hours. The grain size and microstructure characteristics for various samples and their phase composition were carried out using a scanning electron microscope SEM equipped with EDS system. SEM analysis of Ho/BaTiO3 doped ceramics showed that in samples doped with a low level of rare-earth ions, the grain size ranged from 10-40mm, while with the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged between 2-10μm. Dielectric measurements were carried out as a function of temperature up to180°C. The low doped samples sintered at 1380°C, display the high value of dielectric permittivity at room temperature, 2500 for 0.01Ho/BaTiO3. A nearly flat permittivity-response was obtained in specimens with higher additive content. Using a modified Curie-Weiss low the Curie constant (C/) and a critical exponent γ were calculated. The obtained values of γ pointed out the diffuse phase transformation in heavily doped BaTiO3 samples.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade",
title = "Ho2O3 Additive Effects on Microstructure and Dielectrical Properties of BaTiO3 Ceramics",
pages = "10-10",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7469"
}

Paunović, V., Mitić, V. V., Živković, L.,& Miljković, M.. (2012). Ho2O3 Additive Effects on Microstructure and Dielectrical Properties of BaTiO3 Ceramics. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
Belgrade : Serbian Ceramic Society., 10-10.
https://hdl.handle.net/21.15107/rcub_vinar_7469

Paunović V, Mitić VV, Živković L, Miljković M. Ho2O3 Additive Effects on Microstructure and Dielectrical Properties of BaTiO3 Ceramics. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade. 2012;:10-10.
https://hdl.handle.net/21.15107/rcub_vinar_7469 .

Paunović, Vesna, Mitić, Vojislav V., Živković, Ljiljana, Miljković, Miroslav, "Ho2O3 Additive Effects on Microstructure and Dielectrical Properties of BaTiO3 Ceramics" in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade (2012):10-10,
https://hdl.handle.net/21.15107/rcub_vinar_7469 .

TY  - JOUR
AU  - Paunović, Vesna
AU  - Mitić, Vojislav V.
AU  - Miljković, Miroslav
AU  - Pavlović, Vera P.
AU  - Živković, Ljiljana
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/194
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7364
AB  - Doped BaTiO 3-ceramics is very interesting for their application as PTCR resistors, multilayer ceramic capacitors, thermal sensors etc. Ho doped BaTiO 3 ceramics, with different Ho 2O 3 content, ranging from 0.01 to 1.0 wt% Ho, were investigated regarding their microstructural and dielectric characteristics. The samples were prepared by the conventional solid state reaction and sintered at 1320° and 1380°C in an air atmosphere for 4 hours. The grain size and microstructure characteristics for various samples and their phase composition was carried out using a scanning electron microscope (SEM) equipped with EDS system. SEM analysis of Ho/BaTiO 3 doped ceramics showed that in samples doped with a rare-earth ions low level, the grain size ranged from 20-30μμm, while with the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged between 2-10μμm. Dielectric measurements were carried out as a function of temperature up to180 °C. The low doped samples sintered at 1380 °C, display the high value of dielectric permittivity at room temperature, 2400 for 0.01 Ho/BaTiO 3. A nearly flat permittivity-response was obtained in specimens with higher additive content. Using a Curie-Weiss low and modified CurieWeiss low the Curie constant (C), Curie temperature (Tc) and a critical exponent of nonlinearity (γ) were calculated. The obtained value of γ pointed out that the specimens have almost sharp phase transition.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Ho2O3 Additive Effects on BaTiO3 Ceramics Microstructure and Dielectric Properties
SP  - 223
EP  - 233
DO  - 10.2298/SOS1202223P
ER  - 

@article{
author = "Paunović, Vesna and Mitić, Vojislav V. and Miljković, Miroslav and Pavlović, Vera P. and Živković, Ljiljana",
year = "2012",
abstract = "Doped BaTiO 3-ceramics is very interesting for their application as PTCR resistors, multilayer ceramic capacitors, thermal sensors etc. Ho doped BaTiO 3 ceramics, with different Ho 2O 3 content, ranging from 0.01 to 1.0 wt% Ho, were investigated regarding their microstructural and dielectric characteristics. The samples were prepared by the conventional solid state reaction and sintered at 1320° and 1380°C in an air atmosphere for 4 hours. The grain size and microstructure characteristics for various samples and their phase composition was carried out using a scanning electron microscope (SEM) equipped with EDS system. SEM analysis of Ho/BaTiO 3 doped ceramics showed that in samples doped with a rare-earth ions low level, the grain size ranged from 20-30μμm, while with the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged between 2-10μμm. Dielectric measurements were carried out as a function of temperature up to180 °C. The low doped samples sintered at 1380 °C, display the high value of dielectric permittivity at room temperature, 2400 for 0.01 Ho/BaTiO 3. A nearly flat permittivity-response was obtained in specimens with higher additive content. Using a Curie-Weiss low and modified CurieWeiss low the Curie constant (C), Curie temperature (Tc) and a critical exponent of nonlinearity (γ) were calculated. The obtained value of γ pointed out that the specimens have almost sharp phase transition.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Ho2O3 Additive Effects on BaTiO3 Ceramics Microstructure and Dielectric Properties",
pages = "223-233",
doi = "10.2298/SOS1202223P"
}

Paunović, V., Mitić, V. V., Miljković, M., Pavlović, V. P.,& Živković, L.. (2012). Ho2O3 Additive Effects on BaTiO3 Ceramics Microstructure and Dielectric Properties. in Science of Sintering
Belgrade : International Institute for the Science of Sintering., 223-233.
https://doi.org/10.2298/SOS1202223P

Paunović V, Mitić VV, Miljković M, Pavlović VP, Živković L. Ho2O3 Additive Effects on BaTiO3 Ceramics Microstructure and Dielectric Properties. in Science of Sintering. 2012;:223-233.
doi:10.2298/SOS1202223P .

Paunović, Vesna, Mitić, Vojislav V., Miljković, Miroslav, Pavlović, Vera P., Živković, Ljiljana, "Ho2O3 Additive Effects on BaTiO3 Ceramics Microstructure and Dielectric Properties" in Science of Sintering (2012):223-233,
https://doi.org/10.2298/SOS1202223P . .

TY  - JOUR
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir B.
AU  - Paunović, Vesna
AU  - Mitrić, Miodrag
AU  - Ristić, Momčilo M.
PY  - 2011
UR  - http://dais.sanu.ac.rs/123456789/735
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7523
AB  - The aim of this work was an investigation of structural and electrical properties of sintered barium-zinc-titanate ceramics. Mixtures of BaCO3, ZnO and TiO2 were mechanically activated in a planetary ball mill up to 80 minutes and sintered isothermally in air for 120 minutes at 1300°C. The phase composition in the BaCO3-ZnO-TiO2 system after milling and sintering was analyzed using the XRD method. The existence of pure barium-zinc-titanate has been registered. Microstructure analyses were performed using SEM. The results of electric resistivity, capacitance and loss tangent of the sintered samples were correlated with the XRD and SEM results.PACS numbers: 81.20.Wk, 81.20.Ev, 61.05.C-, 84.37.+q
PB  - Warsaw : Institute of Physics, Polish Academy of Science
T2  - Acta Physica Polonica A
T1  - Structural and Electrical Properties of Sintered Barium-Zinc-Titanate Ceramics
SP  - 322
EP  - 325
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7523
ER  - 

@article{
author = "Obradović, Nina and Filipović, Suzana and Pavlović, Vladimir B. and Paunović, Vesna and Mitrić, Miodrag and Ristić, Momčilo M.",
year = "2011",
abstract = "The aim of this work was an investigation of structural and electrical properties of sintered barium-zinc-titanate ceramics. Mixtures of BaCO3, ZnO and TiO2 were mechanically activated in a planetary ball mill up to 80 minutes and sintered isothermally in air for 120 minutes at 1300°C. The phase composition in the BaCO3-ZnO-TiO2 system after milling and sintering was analyzed using the XRD method. The existence of pure barium-zinc-titanate has been registered. Microstructure analyses were performed using SEM. The results of electric resistivity, capacitance and loss tangent of the sintered samples were correlated with the XRD and SEM results.PACS numbers: 81.20.Wk, 81.20.Ev, 61.05.C-, 84.37.+q",
publisher = "Warsaw : Institute of Physics, Polish Academy of Science",
journal = "Acta Physica Polonica A",
title = "Structural and Electrical Properties of Sintered Barium-Zinc-Titanate Ceramics",
pages = "322-325",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7523"
}

Obradović, N., Filipović, S., Pavlović, V. B., Paunović, V., Mitrić, M.,& Ristić, M. M.. (2011). Structural and Electrical Properties of Sintered Barium-Zinc-Titanate Ceramics. in Acta Physica Polonica A
Warsaw : Institute of Physics, Polish Academy of Science., 322-325.
https://hdl.handle.net/21.15107/rcub_vinar_7523

Obradović N, Filipović S, Pavlović VB, Paunović V, Mitrić M, Ristić MM. Structural and Electrical Properties of Sintered Barium-Zinc-Titanate Ceramics. in Acta Physica Polonica A. 2011;:322-325.
https://hdl.handle.net/21.15107/rcub_vinar_7523 .

Obradović, Nina, Filipović, Suzana, Pavlović, Vladimir B., Paunović, Vesna, Mitrić, Miodrag, Ristić, Momčilo M., "Structural and Electrical Properties of Sintered Barium-Zinc-Titanate Ceramics" in Acta Physica Polonica A (2011):322-325,
https://hdl.handle.net/21.15107/rcub_vinar_7523 .

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Paunović, Vesna
AU  - Pavlović, Vera P.
AU  - Živković, Ljiljana
PY  - 2011
UR  - http://dais.sanu.ac.rs/123456789/198
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7365
AB  - Sintering process is a complex of different synergetic effects during the ceramics materials consolidation. The microstructural level properties control is very important as a stage in advanced materials prognosis. SEM analysis of Yb/BaTiO3 doped ceramics showed that in samples doped with a low level of dopant and sintered at higher temperatures the grain size ranged from 10-60μm, while with the higher dopant concentration the grain size ranged between 2-15μm. The morphology of sintered BaTiO3-ceramics grains points out the validity of developing new structure analytical methods based on different geometries of grains' model systems. The idea of electrical properties of BaTiO3-ceramics being influenced by intergrain microcontacts can be successfully followed if we start with the two-sphere Coble’s model and also the correction of the Coble’s model. In this paper, the grains contact models based on spherical, ellipsoidal and polyhedral geometries are presented making a new modeling tool for structure research of BaTiO3-ceramics materials. Intergranular impedance analysis of grains clusters was also introduced. Obtained results enabled establishment of interrelation between structural and electrical parameters.
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Sintering process influence on microstructure and intergranular impedance of rare-earth modified BaTiO3-ceramics
SP  - 277
EP  - 287
DO  - 10.2298/SOS1103277M
ER  - 

@article{
author = "Mitić, Vojislav V. and Paunović, Vesna and Pavlović, Vera P. and Živković, Ljiljana",
year = "2011",
abstract = "Sintering process is a complex of different synergetic effects during the ceramics materials consolidation. The microstructural level properties control is very important as a stage in advanced materials prognosis. SEM analysis of Yb/BaTiO3 doped ceramics showed that in samples doped with a low level of dopant and sintered at higher temperatures the grain size ranged from 10-60μm, while with the higher dopant concentration the grain size ranged between 2-15μm. The morphology of sintered BaTiO3-ceramics grains points out the validity of developing new structure analytical methods based on different geometries of grains' model systems. The idea of electrical properties of BaTiO3-ceramics being influenced by intergrain microcontacts can be successfully followed if we start with the two-sphere Coble’s model and also the correction of the Coble’s model. In this paper, the grains contact models based on spherical, ellipsoidal and polyhedral geometries are presented making a new modeling tool for structure research of BaTiO3-ceramics materials. Intergranular impedance analysis of grains clusters was also introduced. Obtained results enabled establishment of interrelation between structural and electrical parameters.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Sintering process influence on microstructure and intergranular impedance of rare-earth modified BaTiO3-ceramics",
pages = "277-287",
doi = "10.2298/SOS1103277M"
}

Mitić, V. V., Paunović, V., Pavlović, V. P.,& Živković, L.. (2011). Sintering process influence on microstructure and intergranular impedance of rare-earth modified BaTiO3-ceramics. in Science of Sintering
Belgrade : International Institute for the Science of Sintering., 277-287.
https://doi.org/10.2298/SOS1103277M

Mitić VV, Paunović V, Pavlović VP, Živković L. Sintering process influence on microstructure and intergranular impedance of rare-earth modified BaTiO3-ceramics. in Science of Sintering. 2011;:277-287.
doi:10.2298/SOS1103277M .

Mitić, Vojislav V., Paunović, Vesna, Pavlović, Vera P., Živković, Ljiljana, "Sintering process influence on microstructure and intergranular impedance of rare-earth modified BaTiO3-ceramics" in Science of Sintering (2011):277-287,
https://doi.org/10.2298/SOS1103277M . .

TY  - CONF
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir B.
AU  - Paunović, Vesna
AU  - Mitrić, Miodrag
AU  - Ristić, Momčilo M.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7494
AB  - The aim of this work was an investigation of structural and electrical properties of sintered barium-zinc-titanate ceramics. Mixtures of BaCO3, ZnO and TiO2 were mechanically activated in a planetary ball mill up to 80 minutes and sintered isothermally in air for 120 minutes at 1300°C. The phase composition in the BaCO3-ZnO-TiO2 system after milling and sintering was analyzed using the XRD method. The existence of pure barium-zinc-titanate has been registered. Microstructure analyses were performed using SEM. The results of electric resistivity, capacitance and loss tangent of the sintered samples were correlated with the XRD and SEMresults.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Twelfth Annual Conference YUCOMAT 2010 : Programme and The Book of Abstracts
T1  - Structural and electrical properties of barium-zinc-titanate ceramics sintered at 1300ºc
SP  - 118
EP  - 118
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7494
ER  - 

@conference{
author = "Obradović, Nina and Filipović, Suzana and Pavlović, Vladimir B. and Paunović, Vesna and Mitrić, Miodrag and Ristić, Momčilo M.",
year = "2010",
abstract = "The aim of this work was an investigation of structural and electrical properties of sintered barium-zinc-titanate ceramics. Mixtures of BaCO3, ZnO and TiO2 were mechanically activated in a planetary ball mill up to 80 minutes and sintered isothermally in air for 120 minutes at 1300°C. The phase composition in the BaCO3-ZnO-TiO2 system after milling and sintering was analyzed using the XRD method. The existence of pure barium-zinc-titanate has been registered. Microstructure analyses were performed using SEM. The results of electric resistivity, capacitance and loss tangent of the sintered samples were correlated with the XRD and SEMresults.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Twelfth Annual Conference YUCOMAT 2010 : Programme and The Book of Abstracts",
title = "Structural and electrical properties of barium-zinc-titanate ceramics sintered at 1300ºc",
pages = "118-118",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7494"
}

Obradović, N., Filipović, S., Pavlović, V. B., Paunović, V., Mitrić, M.,& Ristić, M. M.. (2010). Structural and electrical properties of barium-zinc-titanate ceramics sintered at 1300ºc. in Twelfth Annual Conference YUCOMAT 2010 : Programme and The Book of Abstracts
Belgrade : Institute of Technical Sciences of SASA., 118-118.
https://hdl.handle.net/21.15107/rcub_vinar_7494

Obradović N, Filipović S, Pavlović VB, Paunović V, Mitrić M, Ristić MM. Structural and electrical properties of barium-zinc-titanate ceramics sintered at 1300ºc. in Twelfth Annual Conference YUCOMAT 2010 : Programme and The Book of Abstracts. 2010;:118-118.
https://hdl.handle.net/21.15107/rcub_vinar_7494 .

Obradović, Nina, Filipović, Suzana, Pavlović, Vladimir B., Paunović, Vesna, Mitrić, Miodrag, Ristić, Momčilo M., "Structural and electrical properties of barium-zinc-titanate ceramics sintered at 1300ºc" in Twelfth Annual Conference YUCOMAT 2010 : Programme and The Book of Abstracts (2010):118-118,
https://hdl.handle.net/21.15107/rcub_vinar_7494 .

TY  - CONF
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
AU  - Paunović, Vesna
AU  - Ristić, Momčilo M.
PY  - 2010
UR  - http://dais.sanu.ac.rs/123456789/625
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7493
AB  - Starting mixtures of BaCO3, ZnO and TiO2 powders were mechanically activated in a planetary ball mill for various periods of time. The powders obtained were sintered nonisothermally to temperatures between 1100 and 1300°C and then held at those temperatures for 120 min. Results of structural characterization using X-ray powder diffraction method, DTA analyses and SEM analyses were conducted for activated and sintered samples. These results were correlated with the results of electric resistivity, capacitance and loss tangent of the samples and it was found that with increasing in milling time, the increase in values of electrical properties was noticed.
PB  - Kiev : National Academy of Sciences of Ukraine (NASU); Frantsevych Institute for Problems of Materials Science of NASU; National Technical University of Ukraine "KPI"; Ukrainian Materials Science Society; INTEM LTD
C3  - The second international Samsonov memorial conference "Material science of refractory compounds" : conference abstracts : May 18-20, 2010, Kyiv, Ukraine
T1  - Barium-zinc-titanate ceramics
SP  - 180
EP  - 180
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7493
ER  - 

@conference{
author = "Obradović, Nina and Filipović, Suzana and Mitrić, Miodrag and Pavlović, Vladimir B. and Paunović, Vesna and Ristić, Momčilo M.",
year = "2010",
abstract = "Starting mixtures of BaCO3, ZnO and TiO2 powders were mechanically activated in a planetary ball mill for various periods of time. The powders obtained were sintered nonisothermally to temperatures between 1100 and 1300°C and then held at those temperatures for 120 min. Results of structural characterization using X-ray powder diffraction method, DTA analyses and SEM analyses were conducted for activated and sintered samples. These results were correlated with the results of electric resistivity, capacitance and loss tangent of the samples and it was found that with increasing in milling time, the increase in values of electrical properties was noticed.",
publisher = "Kiev : National Academy of Sciences of Ukraine (NASU); Frantsevych Institute for Problems of Materials Science of NASU; National Technical University of Ukraine "KPI"; Ukrainian Materials Science Society; INTEM LTD",
journal = "The second international Samsonov memorial conference "Material science of refractory compounds" : conference abstracts : May 18-20, 2010, Kyiv, Ukraine",
title = "Barium-zinc-titanate ceramics",
pages = "180-180",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7493"
}

Obradović, N., Filipović, S., Mitrić, M., Pavlović, V. B., Paunović, V.,& Ristić, M. M.. (2010). Barium-zinc-titanate ceramics. in The second international Samsonov memorial conference "Material science of refractory compounds" : conference abstracts : May 18-20, 2010, Kyiv, Ukraine
Kiev : National Academy of Sciences of Ukraine (NASU); Frantsevych Institute for Problems of Materials Science of NASU; National Technical University of Ukraine "KPI"; Ukrainian Materials Science Society; INTEM LTD., 180-180.
https://hdl.handle.net/21.15107/rcub_vinar_7493

Obradović N, Filipović S, Mitrić M, Pavlović VB, Paunović V, Ristić MM. Barium-zinc-titanate ceramics. in The second international Samsonov memorial conference "Material science of refractory compounds" : conference abstracts : May 18-20, 2010, Kyiv, Ukraine. 2010;:180-180.
https://hdl.handle.net/21.15107/rcub_vinar_7493 .

Obradović, Nina, Filipović, Suzana, Mitrić, Miodrag, Pavlović, Vladimir B., Paunović, Vesna, Ristić, Momčilo M., "Barium-zinc-titanate ceramics" in The second international Samsonov memorial conference "Material science of refractory compounds" : conference abstracts : May 18-20, 2010, Kyiv, Ukraine (2010):180-180,
https://hdl.handle.net/21.15107/rcub_vinar_7493 .

TY  - CONF
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir B.
AU  - Paunović, Vesna
AU  - Mitrić, Miodrag
AU  - Ristić, Momčilo M.
PY  - 2010
UR  - http://dais.sanu.ac.rs/123456789/245
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7372
AB  - Poster presented at the 12th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2010, Herceg Novi, Montenegro, September 6–10, 2010.
T1  - Structural and Electrical Properties of Barium-Zinc-Titanate Ceramics Sintered at 1300°C
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7372
ER  - 

@conference{
author = "Obradović, Nina and Filipović, Suzana and Pavlović, Vladimir B. and Paunović, Vesna and Mitrić, Miodrag and Ristić, Momčilo M.",
year = "2010",
abstract = "Poster presented at the 12th Annual Conference of the Materials Research Society of Serbia - YUCOMAT 2010, Herceg Novi, Montenegro, September 6–10, 2010.",
title = "Structural and Electrical Properties of Barium-Zinc-Titanate Ceramics Sintered at 1300°C",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7372"
}

Obradović, N., Filipović, S., Pavlović, V. B., Paunović, V., Mitrić, M.,& Ristić, M. M.. (2010). Structural and Electrical Properties of Barium-Zinc-Titanate Ceramics Sintered at 1300°C. .
https://hdl.handle.net/21.15107/rcub_vinar_7372

Obradović N, Filipović S, Pavlović VB, Paunović V, Mitrić M, Ristić MM. Structural and Electrical Properties of Barium-Zinc-Titanate Ceramics Sintered at 1300°C. 2010;.
https://hdl.handle.net/21.15107/rcub_vinar_7372 .

Obradović, Nina, Filipović, Suzana, Pavlović, Vladimir B., Paunović, Vesna, Mitrić, Miodrag, Ristić, Momčilo M., "Structural and Electrical Properties of Barium-Zinc-Titanate Ceramics Sintered at 1300°C" (2010),
https://hdl.handle.net/21.15107/rcub_vinar_7372 .