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  - 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 .