TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Krstić, J.
AU  - Scepanović, M.J.
AU  - Dojcilović, J.
AU  - Minić, Dragica M.
AU  - Blanusa, J.
AU  - Stevanović, S.
AU  - Mitić, V.
AU  - Pavlović, Vladimir
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2668
AB  - In this article, in order to obtain tetragonal nanocrystalline BaTiO3, structural investigations of mechanically activated BaTiO3 powder have been performed. A mercury porosimetry analysis and scanning electron microscopy method have been applied for determination of the specific pore volume, porosity and microstructure morphology of the samples. The lattice vibration spectra of nonactivated and activated powders, their phase composition, lattice microstrains and the mean size of coherently diffracting domains were examined by Raman spectroscopy and the X-ray powder diffraction method. The average crystal structure of obtained nanocrystalline powders, estimated from X-ray diffraction data, gave evidence of retained, but slightly sustained tetragonality of powders, even for particles as small as similar to 30 nm. Raman spectroscopy also gave clear evidence for local tetragonal symmetries, in particular through the presence of a band at similar to 307 cm(-1).
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Structural investigation of mechanically activated nanocrystalline BaTiO3 powders
EP  - 2518
IS  - 7
SP  - 2513
VL  - 37
DO  - 10.1016/j.ceramint.2011.03.064
ER  - 

@article{
author = "Pavlović, Vera P. and Krstić, J. and Scepanović, M.J. and Dojcilović, J. and Minić, Dragica M. and Blanusa, J. and Stevanović, S. and Mitić, V. and Pavlović, Vladimir",
year = "2011",
abstract = "In this article, in order to obtain tetragonal nanocrystalline BaTiO3, structural investigations of mechanically activated BaTiO3 powder have been performed. A mercury porosimetry analysis and scanning electron microscopy method have been applied for determination of the specific pore volume, porosity and microstructure morphology of the samples. The lattice vibration spectra of nonactivated and activated powders, their phase composition, lattice microstrains and the mean size of coherently diffracting domains were examined by Raman spectroscopy and the X-ray powder diffraction method. The average crystal structure of obtained nanocrystalline powders, estimated from X-ray diffraction data, gave evidence of retained, but slightly sustained tetragonality of powders, even for particles as small as similar to 30 nm. Raman spectroscopy also gave clear evidence for local tetragonal symmetries, in particular through the presence of a band at similar to 307 cm(-1).",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Structural investigation of mechanically activated nanocrystalline BaTiO3 powders",
pages = "2518-2513",
number = "7",
volume = "37",
doi = "10.1016/j.ceramint.2011.03.064"
}

Pavlović, V. P., Krstić, J., Scepanović, M.J., Dojcilović, J., Minić, D. M., Blanusa, J., Stevanović, S., Mitić, V.,& Pavlović, V.. (2011). Structural investigation of mechanically activated nanocrystalline BaTiO3 powders. in Ceramics International
Elsevier Sci Ltd, Oxford., 37(7), 2513-2518.
https://doi.org/10.1016/j.ceramint.2011.03.064

Pavlović VP, Krstić J, Scepanović M, Dojcilović J, Minić DM, Blanusa J, Stevanović S, Mitić V, Pavlović V. Structural investigation of mechanically activated nanocrystalline BaTiO3 powders. in Ceramics International. 2011;37(7):2513-2518.
doi:10.1016/j.ceramint.2011.03.064 .

Pavlović, Vera P., Krstić, J., Scepanović, M.J., Dojcilović, J., Minić, Dragica M., Blanusa, J., Stevanović, S., Mitić, V., Pavlović, Vladimir, "Structural investigation of mechanically activated nanocrystalline BaTiO3 powders" in Ceramics International, 37, no. 7 (2011):2513-2518,
https://doi.org/10.1016/j.ceramint.2011.03.064 . .

TY  - JOUR
AU  - Obradović, N.
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir
AU  - Mitrić, M.
AU  - Marković, S.
AU  - Mitić, V.
AU  - Djordjević, N.
AU  - Ristić, M.M.
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2686
AB  - Mixtures of BaCO3-ZnO-TiO2 were mechanically activated using high-energy planetary ball mill during 20, 40 and 80 min. As the time of mechanical activation increased, the decrease in particle size was observed. The effect of milling on microstructure was investigated by scanning electron microscopy, as well. Sintering process was performed in air at 1100 and 1200 C for 2 h. Various phases are present within mixtures sintered at 1100 and 1200 degrees C, and almost pure BaZn2Ti4O11 phase was obtained after 80 min of milling and sintering at 1200 degrees C for 2 h.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Isothermal sintering of barium-zinc-titanate ceramics
EP  - 27
IS  - 1
SP  - 21
VL  - 37
DO  - 10.1016/j.ceramint.2010.07.001
ER  - 

@article{
author = "Obradović, N. and Filipović, Suzana and Pavlović, Vladimir and Mitrić, M. and Marković, S. and Mitić, V. and Djordjević, N. and Ristić, M.M.",
year = "2011",
abstract = "Mixtures of BaCO3-ZnO-TiO2 were mechanically activated using high-energy planetary ball mill during 20, 40 and 80 min. As the time of mechanical activation increased, the decrease in particle size was observed. The effect of milling on microstructure was investigated by scanning electron microscopy, as well. Sintering process was performed in air at 1100 and 1200 C for 2 h. Various phases are present within mixtures sintered at 1100 and 1200 degrees C, and almost pure BaZn2Ti4O11 phase was obtained after 80 min of milling and sintering at 1200 degrees C for 2 h.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Isothermal sintering of barium-zinc-titanate ceramics",
pages = "27-21",
number = "1",
volume = "37",
doi = "10.1016/j.ceramint.2010.07.001"
}

Obradović, N., Filipović, S., Pavlović, V., Mitrić, M., Marković, S., Mitić, V., Djordjević, N.,& Ristić, M.M.. (2011). Isothermal sintering of barium-zinc-titanate ceramics. in Ceramics International
Elsevier Sci Ltd, Oxford., 37(1), 21-27.
https://doi.org/10.1016/j.ceramint.2010.07.001

Obradović N, Filipović S, Pavlović V, Mitrić M, Marković S, Mitić V, Djordjević N, Ristić M. Isothermal sintering of barium-zinc-titanate ceramics. in Ceramics International. 2011;37(1):21-27.
doi:10.1016/j.ceramint.2010.07.001 .

Obradović, N., Filipović, Suzana, Pavlović, Vladimir, Mitrić, M., Marković, S., Mitić, V., Djordjević, N., Ristić, M.M., "Isothermal sintering of barium-zinc-titanate ceramics" in Ceramics International, 37, no. 1 (2011):21-27,
https://doi.org/10.1016/j.ceramint.2010.07.001 . .

TY  - CONF
AU  - Mitić, V.
AU  - Pavlović, Vladimir
AU  - Paunović, V.
AU  - Kocić, Lj
AU  - Zivković, Lj
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2150
AB  - BaTiO3-ceramics are known as some of the most useful electroceramics with a various applications. In this study the effect of Er2O3 as additive on the microstructure and dielectric properties of doped BaTiO3 was investigated. The samples doped with 0.01 to 1.0 wt% Er2O3 were prepared using by conventional solid state procedure, and were sintered at 1350 degrees C for four hours. The microstructure of sintered specimens was investigated by SEM-5300 and capacitance and dielectric loss measurements have been done using LCR-metra Agilent 4284A in the frequency range from 20Hz to 1MHz. The microstructure study with low additive concentration shows abnormal grain size, with average grain size between 20-60 mu m. With the higher dopant concentracion the abnormal grain growth is inhibited and the grain size ranged between 5-15 mu m. The dielectric constant decrease with increase of dopant concentration and for all of the investigated samples ranged from 650 to 1600 at room temperature. The dissipation losses a linear decrease v.s frequency is mesured for all investigated samples. We applied a fractal method for the microstructure analysis. This method for analysis of the structure of ceramics provides a new approach for describing, predicting and modeling the grain shape and relations between the BaTiO3 ceramic structure and dielectrical properties.
C3  - Ceramic Transactions
T1  - Characterization and microstructure evolution in er-doped batio3 ceramics
EP  - 103
SP  - 89
VL  - 221
DO  - 10.1002/9780470930915.ch9
ER  - 

@conference{
author = "Mitić, V. and Pavlović, Vladimir and Paunović, V. and Kocić, Lj and Zivković, Lj",
year = "2010",
abstract = "BaTiO3-ceramics are known as some of the most useful electroceramics with a various applications. In this study the effect of Er2O3 as additive on the microstructure and dielectric properties of doped BaTiO3 was investigated. The samples doped with 0.01 to 1.0 wt% Er2O3 were prepared using by conventional solid state procedure, and were sintered at 1350 degrees C for four hours. The microstructure of sintered specimens was investigated by SEM-5300 and capacitance and dielectric loss measurements have been done using LCR-metra Agilent 4284A in the frequency range from 20Hz to 1MHz. The microstructure study with low additive concentration shows abnormal grain size, with average grain size between 20-60 mu m. With the higher dopant concentracion the abnormal grain growth is inhibited and the grain size ranged between 5-15 mu m. The dielectric constant decrease with increase of dopant concentration and for all of the investigated samples ranged from 650 to 1600 at room temperature. The dissipation losses a linear decrease v.s frequency is mesured for all investigated samples. We applied a fractal method for the microstructure analysis. This method for analysis of the structure of ceramics provides a new approach for describing, predicting and modeling the grain shape and relations between the BaTiO3 ceramic structure and dielectrical properties.",
journal = "Ceramic Transactions",
title = "Characterization and microstructure evolution in er-doped batio3 ceramics",
pages = "103-89",
volume = "221",
doi = "10.1002/9780470930915.ch9"
}

Mitić, V., Pavlović, V., Paunović, V., Kocić, L.,& Zivković, L.. (2010). Characterization and microstructure evolution in er-doped batio3 ceramics. in Ceramic Transactions, 221, 89-103.
https://doi.org/10.1002/9780470930915.ch9

Mitić V, Pavlović V, Paunović V, Kocić L, Zivković L. Characterization and microstructure evolution in er-doped batio3 ceramics. in Ceramic Transactions. 2010;221:89-103.
doi:10.1002/9780470930915.ch9 .

Mitić, V., Pavlović, Vladimir, Paunović, V., Kocić, Lj, Zivković, Lj, "Characterization and microstructure evolution in er-doped batio3 ceramics" in Ceramic Transactions, 221 (2010):89-103,
https://doi.org/10.1002/9780470930915.ch9 . .

TY  - CONF
AU  - Mitić, V.
AU  - Pavlović, Vladimir
AU  - Kocić, Lj.
AU  - Paunović, V.
AU  - Mancić, D.
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2133
AB  - Microstructure properties of barium-titanate based materials, expressed in grain boundary contacts, are of basic importance for electric properties of these material. In this study, the model of intergranular impedance applied on two-grain contact is considered. Globally, BaTiO3-ceramics sample is consisted of a huge number of mutually contacted grains which form clusters. Such clusters can be presented as a specific fractal formations. For each of them, it is possible to establish the equivalent electrical model and, for defined set of input parameters, using symbolic analysis, obtain the frequency diagram. The influence of fractal structure is especially stressed. Realizing the totality of relations between clusters grains groups, their microelectrical schemes and corresponding frequency characteristics, from one side, and global equivalent electrical scheme and corresponding acquired frequency characteristics of BaTiO3-ceramics samples, on the other side, we set a goal of coinciding experimental results with the summing effect of microelectric equivalent schemes. The model is successfully tested on doped barium-titanate ceramics.
PB  - Advances in Electronic Ceramics II - 33rd International Conference on Advanced Ceramics and Composites
C3  - Ceramic Engineering and Science Proceedings
T1  - Intergranular fractal impedance analysis of microstructure and electrical properties of rare-earth doped batio3
EP  - 91
IS  - 9
SP  - 79
VL  - 30
UR  - https://hdl.handle.net/21.15107/rcub_dais_3421
ER  - 

@conference{
author = "Mitić, V. and Pavlović, Vladimir and Kocić, Lj. and Paunović, V. and Mancić, D.",
year = "2010",
abstract = "Microstructure properties of barium-titanate based materials, expressed in grain boundary contacts, are of basic importance for electric properties of these material. In this study, the model of intergranular impedance applied on two-grain contact is considered. Globally, BaTiO3-ceramics sample is consisted of a huge number of mutually contacted grains which form clusters. Such clusters can be presented as a specific fractal formations. For each of them, it is possible to establish the equivalent electrical model and, for defined set of input parameters, using symbolic analysis, obtain the frequency diagram. The influence of fractal structure is especially stressed. Realizing the totality of relations between clusters grains groups, their microelectrical schemes and corresponding frequency characteristics, from one side, and global equivalent electrical scheme and corresponding acquired frequency characteristics of BaTiO3-ceramics samples, on the other side, we set a goal of coinciding experimental results with the summing effect of microelectric equivalent schemes. The model is successfully tested on doped barium-titanate ceramics.",
publisher = "Advances in Electronic Ceramics II - 33rd International Conference on Advanced Ceramics and Composites",
journal = "Ceramic Engineering and Science Proceedings",
title = "Intergranular fractal impedance analysis of microstructure and electrical properties of rare-earth doped batio3",
pages = "91-79",
number = "9",
volume = "30",
url = "https://hdl.handle.net/21.15107/rcub_dais_3421"
}

Mitić, V., Pavlović, V., Kocić, Lj., Paunović, V.,& Mancić, D.. (2010). Intergranular fractal impedance analysis of microstructure and electrical properties of rare-earth doped batio3. in Ceramic Engineering and Science Proceedings
Advances in Electronic Ceramics II - 33rd International Conference on Advanced Ceramics and Composites., 30(9), 79-91.
https://hdl.handle.net/21.15107/rcub_dais_3421

Mitić V, Pavlović V, Kocić L, Paunović V, Mancić D. Intergranular fractal impedance analysis of microstructure and electrical properties of rare-earth doped batio3. in Ceramic Engineering and Science Proceedings. 2010;30(9):79-91.
https://hdl.handle.net/21.15107/rcub_dais_3421 .

Mitić, V., Pavlović, Vladimir, Kocić, Lj., Paunović, V., Mancić, D., "Intergranular fractal impedance analysis of microstructure and electrical properties of rare-earth doped batio3" in Ceramic Engineering and Science Proceedings, 30, no. 9 (2010):79-91,
https://hdl.handle.net/21.15107/rcub_dais_3421 .

TY  - JOUR
AU  - Mitić, V.
AU  - Pavlović, Vladimir
AU  - Kocić, Lj.
AU  - Paunović, V.
AU  - Mančić, D.
PY  - 2009
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2037
AB  - Microstructure properties of barium-titanate based materials, expressed in grain boundary contacts, are of basic importance for electric properties of this material. In this study, the model of intergranular impedance applied on a two-grain contact is considered. Globally, a BaTiO3-ceramics sample consists of a large number of mutually contacted grains, which form clusters. Such clusters can be presented as specific fractal formations. For each of them, it is possible to establish the equivalent electrical model and, for a defined set of input parameters, using symbolic analysis, obtain the frequency diagram. The influence of fractal structure is especially stressed. Realizing the totality of relations between cluster grain groups, their microelectrical schemes and corresponding frequency characteristics, on one hand, and the global equivalent electrical scheme and corresponding acquired frequency characteristics of BaTiO3-ceramics samples, on the other hand, we set a goal of correlating experimental results with the summing effect of microelectric equivalent schemes. The model is successfully tested on doped barium-titanate ceramics.
AB  - Mikrostrukturna svojstva materijala na bazi barijum-titanata, izražena kontaktima granica zrna od fundamentalne su važnosti za električna svojstva ovih materijala. U ovom radu razmatrana je primena modela impedanse između dva zrna na kontakt dva zrna. Globalno posmatrano, uzorak BaTiO3-keramike sastoji se od ogromnog broja zrna u međusobnom kontaktu koji formiraju klastere. Takvi klasteri mogu biti predstavljeni kao specifične fraktalne formacije. Za svaku od ovih formacija moguće je uspostaviti ekvivalentni električni model za definisani set ulaznih parametara koristeći metod simboličke analize i dobiti odgovarajuću frekventnu karakteristiku. Posebno je naglašen uticaj fraktalne strukture. Realizujući kompletnu relaciju između klastera zrna, njihovih mikroelektričnih šema i odgovarajućih frekventnih karakteristika s jedne strane, i globalnih ekvivalentnih električnih šema i odgovarajućih frekventnih karakteristika uzoraka BaTiO3-keramike, s druge strane, uspostavljamo set ciljanih koincidentnih eksperimentalnih rezultata sa sumarnim efektima izračunavanih mikroelektričnih ekvivalentnih šema. Model je uspešno testiran na uzorcima barijum-titanatne keramike.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Application of the intergranular impedance model in correlating microstructure and electrical properties of doped BaTiO3
EP  - 256
IS  - 3
SP  - 247
VL  - 41
DO  - 10.2298/SOS0903247M
ER  - 

@article{
author = "Mitić, V. and Pavlović, Vladimir and Kocić, Lj. and Paunović, V. and Mančić, D.",
year = "2009",
abstract = "Microstructure properties of barium-titanate based materials, expressed in grain boundary contacts, are of basic importance for electric properties of this material. In this study, the model of intergranular impedance applied on a two-grain contact is considered. Globally, a BaTiO3-ceramics sample consists of a large number of mutually contacted grains, which form clusters. Such clusters can be presented as specific fractal formations. For each of them, it is possible to establish the equivalent electrical model and, for a defined set of input parameters, using symbolic analysis, obtain the frequency diagram. The influence of fractal structure is especially stressed. Realizing the totality of relations between cluster grain groups, their microelectrical schemes and corresponding frequency characteristics, on one hand, and the global equivalent electrical scheme and corresponding acquired frequency characteristics of BaTiO3-ceramics samples, on the other hand, we set a goal of correlating experimental results with the summing effect of microelectric equivalent schemes. The model is successfully tested on doped barium-titanate ceramics., Mikrostrukturna svojstva materijala na bazi barijum-titanata, izražena kontaktima granica zrna od fundamentalne su važnosti za električna svojstva ovih materijala. U ovom radu razmatrana je primena modela impedanse između dva zrna na kontakt dva zrna. Globalno posmatrano, uzorak BaTiO3-keramike sastoji se od ogromnog broja zrna u međusobnom kontaktu koji formiraju klastere. Takvi klasteri mogu biti predstavljeni kao specifične fraktalne formacije. Za svaku od ovih formacija moguće je uspostaviti ekvivalentni električni model za definisani set ulaznih parametara koristeći metod simboličke analize i dobiti odgovarajuću frekventnu karakteristiku. Posebno je naglašen uticaj fraktalne strukture. Realizujući kompletnu relaciju između klastera zrna, njihovih mikroelektričnih šema i odgovarajućih frekventnih karakteristika s jedne strane, i globalnih ekvivalentnih električnih šema i odgovarajućih frekventnih karakteristika uzoraka BaTiO3-keramike, s druge strane, uspostavljamo set ciljanih koincidentnih eksperimentalnih rezultata sa sumarnim efektima izračunavanih mikroelektričnih ekvivalentnih šema. Model je uspešno testiran na uzorcima barijum-titanatne keramike.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Application of the intergranular impedance model in correlating microstructure and electrical properties of doped BaTiO3",
pages = "256-247",
number = "3",
volume = "41",
doi = "10.2298/SOS0903247M"
}

Mitić, V., Pavlović, V., Kocić, Lj., Paunović, V.,& Mančić, D.. (2009). Application of the intergranular impedance model in correlating microstructure and electrical properties of doped BaTiO3. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 41(3), 247-256.
https://doi.org/10.2298/SOS0903247M

Mitić V, Pavlović V, Kocić L, Paunović V, Mančić D. Application of the intergranular impedance model in correlating microstructure and electrical properties of doped BaTiO3. in Science of Sintering. 2009;41(3):247-256.
doi:10.2298/SOS0903247M .

Mitić, V., Pavlović, Vladimir, Kocić, Lj., Paunović, V., Mančić, D., "Application of the intergranular impedance model in correlating microstructure and electrical properties of doped BaTiO3" in Science of Sintering, 41, no. 3 (2009):247-256,
https://doi.org/10.2298/SOS0903247M . .

TY  - CONF
AU  - Mitić, V.V.
AU  - Paunović, V.
AU  - Mancić, D.
AU  - Kocić, L.J.
AU  - Zivković, L.J.
AU  - Pavlović, Vladimir
PY  - 2009
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1850
AB  - Taking into account that microstructure properties of barium-titanate based materials, expressed in grain boundary contacts, are of basic importance for electric properties of these material, in this study, the model of intergranular impedance is established using the equivalent electrical scheme characterized by corresponding frequency characteristic. Globally, BaTiO3 sample is consisted of a huge number of mutually contacted grains which form clusters. For each of them, it is possible to establish the equivalent electrical model and, for defined set of input parameters, using symbolic analysis, obtain the frequency diagram. Realizing the totality of relations betwecn clusters grains groups, their microelectrical schemes and corresponding frequency characteristics, from one side, and global equivalent electrical scheme and corresponding acquired frequency characteristics of BaTiO3 samples, on the other side, we set a goal of coinciding experimental results with the summing effect of microclectric equivalent schemes. The model is successfully tested on barium titanate ceramics doped with Er2O3Yb 2O3.
PB  - Advances in Electroceramic Materials
C3  - Ceramic Transactions
T1  - Dielectric properties of batio3 doped with er203 and yb203 based on intergranular contacts model
EP  - 144
SP  - 137
VL  - 204
UR  - https://hdl.handle.net/21.15107/rcub_dais_3483
ER  - 

@conference{
author = "Mitić, V.V. and Paunović, V. and Mancić, D. and Kocić, L.J. and Zivković, L.J. and Pavlović, Vladimir",
year = "2009",
abstract = "Taking into account that microstructure properties of barium-titanate based materials, expressed in grain boundary contacts, are of basic importance for electric properties of these material, in this study, the model of intergranular impedance is established using the equivalent electrical scheme characterized by corresponding frequency characteristic. Globally, BaTiO3 sample is consisted of a huge number of mutually contacted grains which form clusters. For each of them, it is possible to establish the equivalent electrical model and, for defined set of input parameters, using symbolic analysis, obtain the frequency diagram. Realizing the totality of relations betwecn clusters grains groups, their microelectrical schemes and corresponding frequency characteristics, from one side, and global equivalent electrical scheme and corresponding acquired frequency characteristics of BaTiO3 samples, on the other side, we set a goal of coinciding experimental results with the summing effect of microclectric equivalent schemes. The model is successfully tested on barium titanate ceramics doped with Er2O3Yb 2O3.",
publisher = "Advances in Electroceramic Materials",
journal = "Ceramic Transactions",
title = "Dielectric properties of batio3 doped with er203 and yb203 based on intergranular contacts model",
pages = "144-137",
volume = "204",
url = "https://hdl.handle.net/21.15107/rcub_dais_3483"
}

Mitić, V.V., Paunović, V., Mancić, D., Kocić, L.J., Zivković, L.J.,& Pavlović, V.. (2009). Dielectric properties of batio3 doped with er203 and yb203 based on intergranular contacts model. in Ceramic Transactions
Advances in Electroceramic Materials., 204, 137-144.
https://hdl.handle.net/21.15107/rcub_dais_3483

Mitić V, Paunović V, Mancić D, Kocić L, Zivković L, Pavlović V. Dielectric properties of batio3 doped with er203 and yb203 based on intergranular contacts model. in Ceramic Transactions. 2009;204:137-144.
https://hdl.handle.net/21.15107/rcub_dais_3483 .

Mitić, V.V., Paunović, V., Mancić, D., Kocić, L.J., Zivković, L.J., Pavlović, Vladimir, "Dielectric properties of batio3 doped with er203 and yb203 based on intergranular contacts model" in Ceramic Transactions, 204 (2009):137-144,
https://hdl.handle.net/21.15107/rcub_dais_3483 .

TY  - CONF
AU  - Mitić, V.V.
AU  - Paunović, V.
AU  - Mancić, D.
AU  - Kocić, Lj.
AU  - Zivković, Lj.
AU  - Pavlović, Vladimir
PY  - 2009
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1994
AB  - Taking into account that microstructure properties of barium-titanate based materials, expressed in grain boundary contacts, are of basic importance for electric properties of these material, in this study, the model of intergranular impedance is established using the equivalent electrical scheme characterized by corresponding frequency characteristic. Globally, BaTiO3-ceramics sample is consisted of a huge number of mutually contacted grains which form clusters. For each of them, it is possible to establish the equivalent electrical model and, for defined set of input parameters, using symbolic analysis, obtain the frequency diagram. Realizing the totality of relations between clusters grains groups, their microelectrical schemes and corresponding frequency characteristics, from one side, and global equivalent electrical scheme and corresponding acquired frequency characteristics of BaTiO3-ceramics samples, on the other side, we set a goal of coinciding experimental results with the summing effect of microelectric equivalent schemes. The model is successfully tested on barium titanate ceramics doped with Er2O3, Yb2O3.
PB  - Amer Ceramic Soc, Westerville
C3  - Advances in Electroceramic Materials
T1  - Dielectric properties of batio3 doped with er2o3 and yb2o3 based on intergranular contacts model
EP  - +
SP  - 137
VL  - 204
DO  - 10.1002/9780470528990.ch16
ER  - 

@conference{
author = "Mitić, V.V. and Paunović, V. and Mancić, D. and Kocić, Lj. and Zivković, Lj. and Pavlović, Vladimir",
year = "2009",
abstract = "Taking into account that microstructure properties of barium-titanate based materials, expressed in grain boundary contacts, are of basic importance for electric properties of these material, in this study, the model of intergranular impedance is established using the equivalent electrical scheme characterized by corresponding frequency characteristic. Globally, BaTiO3-ceramics sample is consisted of a huge number of mutually contacted grains which form clusters. For each of them, it is possible to establish the equivalent electrical model and, for defined set of input parameters, using symbolic analysis, obtain the frequency diagram. Realizing the totality of relations between clusters grains groups, their microelectrical schemes and corresponding frequency characteristics, from one side, and global equivalent electrical scheme and corresponding acquired frequency characteristics of BaTiO3-ceramics samples, on the other side, we set a goal of coinciding experimental results with the summing effect of microelectric equivalent schemes. The model is successfully tested on barium titanate ceramics doped with Er2O3, Yb2O3.",
publisher = "Amer Ceramic Soc, Westerville",
journal = "Advances in Electroceramic Materials",
title = "Dielectric properties of batio3 doped with er2o3 and yb2o3 based on intergranular contacts model",
pages = "+-137",
volume = "204",
doi = "10.1002/9780470528990.ch16"
}

Mitić, V.V., Paunović, V., Mancić, D., Kocić, Lj., Zivković, Lj.,& Pavlović, V.. (2009). Dielectric properties of batio3 doped with er2o3 and yb2o3 based on intergranular contacts model. in Advances in Electroceramic Materials
Amer Ceramic Soc, Westerville., 204, 137-+.
https://doi.org/10.1002/9780470528990.ch16

Mitić V, Paunović V, Mancić D, Kocić L, Zivković L, Pavlović V. Dielectric properties of batio3 doped with er2o3 and yb2o3 based on intergranular contacts model. in Advances in Electroceramic Materials. 2009;204:137-+.
doi:10.1002/9780470528990.ch16 .

Mitić, V.V., Paunović, V., Mancić, D., Kocić, Lj., Zivković, Lj., Pavlović, Vladimir, "Dielectric properties of batio3 doped with er2o3 and yb2o3 based on intergranular contacts model" in Advances in Electroceramic Materials, 204 (2009):137-+,
https://doi.org/10.1002/9780470528990.ch16 . .

TY  - CONF
AU  - Mitić, V.V.
AU  - Nikolić, Z.S.
AU  - Paunović, V.
AU  - Mancić, D.
AU  - Zivković, Lj
AU  - Pavlović, Vladimir
AU  - Jordović, Branka
PY  - 2009
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2016
AB  - In this article the additives Yb and Er oxides are used as doping materials for BaTiO3-based multilayer devices. The amphoteric behavior of these rare-earth ions leads to the increase of dielectric permittivity and decrease of dielectric losses. BaTiO3-ceramics doped with 0.01 up to 0.5 wt % of Yb2O3 and Er2O3 were prepared by conventional solid state procedure and sintered up to 1320 degrees C for four hours. In BaTiO3 doped with a low level of rare-earth ions the grain size ranged from 10-60 mu m. With the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged from between 2-10 mu m. The measurements of capacitance and dielectric losses as a function of frequency and temperature have been done in order to correlate the microstructure and dielectric properties of doped BaTiO3-ceramics. The temperature dependence of the dielectric constant as a function of dopant amount has been investigated.
PB  - Amer Ceramic Soc, Westerville
C3  - Developments in Strategic Materials
T1  - Influence of yb2o3 and er2o3 on batio3 ceramics microstructure and corresponding electrical properties
EP  - +
IS  - 10
SP  - 231
VL  - 29
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2016
ER  - 

@conference{
author = "Mitić, V.V. and Nikolić, Z.S. and Paunović, V. and Mancić, D. and Zivković, Lj and Pavlović, Vladimir and Jordović, Branka",
year = "2009",
abstract = "In this article the additives Yb and Er oxides are used as doping materials for BaTiO3-based multilayer devices. The amphoteric behavior of these rare-earth ions leads to the increase of dielectric permittivity and decrease of dielectric losses. BaTiO3-ceramics doped with 0.01 up to 0.5 wt % of Yb2O3 and Er2O3 were prepared by conventional solid state procedure and sintered up to 1320 degrees C for four hours. In BaTiO3 doped with a low level of rare-earth ions the grain size ranged from 10-60 mu m. With the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged from between 2-10 mu m. The measurements of capacitance and dielectric losses as a function of frequency and temperature have been done in order to correlate the microstructure and dielectric properties of doped BaTiO3-ceramics. The temperature dependence of the dielectric constant as a function of dopant amount has been investigated.",
publisher = "Amer Ceramic Soc, Westerville",
journal = "Developments in Strategic Materials",
title = "Influence of yb2o3 and er2o3 on batio3 ceramics microstructure and corresponding electrical properties",
pages = "+-231",
number = "10",
volume = "29",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2016"
}

Mitić, V.V., Nikolić, Z.S., Paunović, V., Mancić, D., Zivković, L., Pavlović, V.,& Jordović, B.. (2009). Influence of yb2o3 and er2o3 on batio3 ceramics microstructure and corresponding electrical properties. in Developments in Strategic Materials
Amer Ceramic Soc, Westerville., 29(10), 231-+.
https://hdl.handle.net/21.15107/rcub_agrospace_2016

Mitić V, Nikolić Z, Paunović V, Mancić D, Zivković L, Pavlović V, Jordović B. Influence of yb2o3 and er2o3 on batio3 ceramics microstructure and corresponding electrical properties. in Developments in Strategic Materials. 2009;29(10):231-+.
https://hdl.handle.net/21.15107/rcub_agrospace_2016 .

Mitić, V.V., Nikolić, Z.S., Paunović, V., Mancić, D., Zivković, Lj, Pavlović, Vladimir, Jordović, Branka, "Influence of yb2o3 and er2o3 on batio3 ceramics microstructure and corresponding electrical properties" in Developments in Strategic Materials, 29, no. 10 (2009):231-+,
https://hdl.handle.net/21.15107/rcub_agrospace_2016 .

TY  - CONF
AU  - Mitić, V.V.
AU  - Pavlović, Vladimir
AU  - Mancić, D.
AU  - Paunović, V.
AU  - Jordović, Branka
AU  - Zivković, Lj.
PY  - 2008
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1626
AB  - Doped barium-titanate ceramic is attracting much interest for its application as resistors with a positive temperature coefficient of resistivity (PTCR), multilayer ceramic capacitors (MLCC), thermal sensors etc. In this article the influence of Yb2O3, Er2O 3 and Ho2O3 on microstructure development and dielectric properties of BaTiO3 ceramics has been presented. BaTiO3-ceramics doped with 0.5 up to 1 wt % of Yb2O 3, Er2O3 and Ho2O3 were prepared by conventional solid state procedure and sintered up to 1320°C for two hours. Microstructure investigations of doped BaTiO3 was performed using the scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and stereological methods. The measurements of capacitance and dielectric losses as a function of frequency and temperature were evaluated by matching model. Special attention has been focused on the study of the changes in morphology, grain and pore size distribution of the sintered specimens and their correlation with the change of capacity, dielectric permittivity and Curie temperature.
PB  - 2nd International Congress on Ceramics, ICC 2008
C3  - A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, Intern
T1  - Microstructure and dielectric properties of BaTiO3 doped with Er2O3, Yb2O3 and Ho 2O3
UR  - https://hdl.handle.net/21.15107/rcub_dais_3562
ER  - 

@conference{
author = "Mitić, V.V. and Pavlović, Vladimir and Mancić, D. and Paunović, V. and Jordović, Branka and Zivković, Lj.",
year = "2008",
abstract = "Doped barium-titanate ceramic is attracting much interest for its application as resistors with a positive temperature coefficient of resistivity (PTCR), multilayer ceramic capacitors (MLCC), thermal sensors etc. In this article the influence of Yb2O3, Er2O 3 and Ho2O3 on microstructure development and dielectric properties of BaTiO3 ceramics has been presented. BaTiO3-ceramics doped with 0.5 up to 1 wt % of Yb2O 3, Er2O3 and Ho2O3 were prepared by conventional solid state procedure and sintered up to 1320°C for two hours. Microstructure investigations of doped BaTiO3 was performed using the scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and stereological methods. The measurements of capacitance and dielectric losses as a function of frequency and temperature were evaluated by matching model. Special attention has been focused on the study of the changes in morphology, grain and pore size distribution of the sintered specimens and their correlation with the change of capacity, dielectric permittivity and Curie temperature.",
publisher = "2nd International Congress on Ceramics, ICC 2008",
journal = "A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, Intern",
title = "Microstructure and dielectric properties of BaTiO3 doped with Er2O3, Yb2O3 and Ho 2O3",
url = "https://hdl.handle.net/21.15107/rcub_dais_3562"
}

Mitić, V.V., Pavlović, V., Mancić, D., Paunović, V., Jordović, B.,& Zivković, Lj.. (2008). Microstructure and dielectric properties of BaTiO3 doped with Er2O3, Yb2O3 and Ho 2O3. in A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, Intern
2nd International Congress on Ceramics, ICC 2008..
https://hdl.handle.net/21.15107/rcub_dais_3562

Mitić V, Pavlović V, Mancić D, Paunović V, Jordović B, Zivković L. Microstructure and dielectric properties of BaTiO3 doped with Er2O3, Yb2O3 and Ho 2O3. in A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, Intern. 2008;.
https://hdl.handle.net/21.15107/rcub_dais_3562 .

Mitić, V.V., Pavlović, Vladimir, Mancić, D., Paunović, V., Jordović, Branka, Zivković, Lj., "Microstructure and dielectric properties of BaTiO3 doped with Er2O3, Yb2O3 and Ho 2O3" in A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, Intern (2008),
https://hdl.handle.net/21.15107/rcub_dais_3562 .