TY  - JOUR
AU  - Mitić, V.V.
AU  - Kocić, Lj.
AU  - Paunović, V.
AU  - Pavlović, Vladimir
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3463
AB  - Morphology of ceramics grains and pores as well as Brownian character of particle dynamics inside ceramics specimen contributes to better understanding of the sintering process. BaTiO3-ceramics, studied in this paper, has light fractal form and it is emanated in three aspects. First, the surface of grains, even in starting green body as well as distribution of grains shows fractal behavior. Second, existence of pores and their distribution follow the rules of fractal geometry. Third, movement of particles inside viscous flow underlies the rule of Brownian motion, which is essentially a fractal category. These three elements, each in its domain influence sintering dynamics, and can be described by dimensionless quantitative factors, alpha(S), alpha(P) and alpha(M), being normalized to the interval [0,1]. Following sintering process, the associate formulae of Frenkel, Scherer and Mackenzie-Shuttleworth are shown from the angle of view of ceramics fractal dimension changing that approaches to 3. Also, it is shown that the energy balance is not violated after applying fractal correction to quasi equilibrium of the energy emanating from surface area reduction E-S and energy adopted by viscous flow E-f.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Fractal Corrections of BaTiO3-ceramic Sintering Parameters
EP  - 156
IS  - 2
SP  - 149
VL  - 46
DO  - 10.2298/SOS1402149M
ER  - 

@article{
author = "Mitić, V.V. and Kocić, Lj. and Paunović, V. and Pavlović, Vladimir",
year = "2014",
abstract = "Morphology of ceramics grains and pores as well as Brownian character of particle dynamics inside ceramics specimen contributes to better understanding of the sintering process. BaTiO3-ceramics, studied in this paper, has light fractal form and it is emanated in three aspects. First, the surface of grains, even in starting green body as well as distribution of grains shows fractal behavior. Second, existence of pores and their distribution follow the rules of fractal geometry. Third, movement of particles inside viscous flow underlies the rule of Brownian motion, which is essentially a fractal category. These three elements, each in its domain influence sintering dynamics, and can be described by dimensionless quantitative factors, alpha(S), alpha(P) and alpha(M), being normalized to the interval [0,1]. Following sintering process, the associate formulae of Frenkel, Scherer and Mackenzie-Shuttleworth are shown from the angle of view of ceramics fractal dimension changing that approaches to 3. Also, it is shown that the energy balance is not violated after applying fractal correction to quasi equilibrium of the energy emanating from surface area reduction E-S and energy adopted by viscous flow E-f.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Fractal Corrections of BaTiO3-ceramic Sintering Parameters",
pages = "156-149",
number = "2",
volume = "46",
doi = "10.2298/SOS1402149M"
}

Mitić, V.V., Kocić, Lj., Paunović, V.,& Pavlović, V.. (2014). Fractal Corrections of BaTiO3-ceramic Sintering Parameters. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 46(2), 149-156.
https://doi.org/10.2298/SOS1402149M

Mitić V, Kocić L, Paunović V, Pavlović V. Fractal Corrections of BaTiO3-ceramic Sintering Parameters. in Science of Sintering. 2014;46(2):149-156.
doi:10.2298/SOS1402149M .

Mitić, V.V., Kocić, Lj., Paunović, V., Pavlović, Vladimir, "Fractal Corrections of BaTiO3-ceramic Sintering Parameters" in Science of Sintering, 46, no. 2 (2014):149-156,
https://doi.org/10.2298/SOS1402149M . .

TY  - JOUR
AU  - Mitić, V.V.
AU  - Paunović, V.
AU  - Pavlović, Vladimir
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3449
AB  - The specimens of BaTiO3 doped with 0.01, 0.1 and 0.5wt% of Er2O3 or Ho2O3 used for this investigation were prepared by the conventional solid state reaction. The specimens were sintered at 1350 degrees C in an air atmosphere for 4hours.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 Er/BaTiO3 and Ho/BaTiO3 doped ceramics showed that in samples doped with a low level of rare-earth ions, the grain size ranged from 10-60m, while with the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged between 2-10m.We also applied the fractal method in microstructure analysis of sintered ceramics especially as influence on dielectric properties of BaTiO3 ceramics. These fractal effects have been used for better understanding of intergranular capacitors.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Ferroelectrics
T1  - Microstructure and Dielectric Properties of Rare-Earth Doped BaTiO3 Ceramics
EP  - 167
IS  - 1
SP  - 159
VL  - 470
DO  - 10.1080/00150193.2014.923229
ER  - 

@article{
author = "Mitić, V.V. and Paunović, V. and Pavlović, Vladimir",
year = "2014",
abstract = "The specimens of BaTiO3 doped with 0.01, 0.1 and 0.5wt% of Er2O3 or Ho2O3 used for this investigation were prepared by the conventional solid state reaction. The specimens were sintered at 1350 degrees C in an air atmosphere for 4hours.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 Er/BaTiO3 and Ho/BaTiO3 doped ceramics showed that in samples doped with a low level of rare-earth ions, the grain size ranged from 10-60m, while with the higher dopant concentration the abnormal grain growth is inhibited and the grain size ranged between 2-10m.We also applied the fractal method in microstructure analysis of sintered ceramics especially as influence on dielectric properties of BaTiO3 ceramics. These fractal effects have been used for better understanding of intergranular capacitors.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Ferroelectrics",
title = "Microstructure and Dielectric Properties of Rare-Earth Doped BaTiO3 Ceramics",
pages = "167-159",
number = "1",
volume = "470",
doi = "10.1080/00150193.2014.923229"
}

Mitić, V.V., Paunović, V.,& Pavlović, V.. (2014). Microstructure and Dielectric Properties of Rare-Earth Doped BaTiO3 Ceramics. in Ferroelectrics
Taylor & Francis Ltd, Abingdon., 470(1), 159-167.
https://doi.org/10.1080/00150193.2014.923229

Mitić V, Paunović V, Pavlović V. Microstructure and Dielectric Properties of Rare-Earth Doped BaTiO3 Ceramics. in Ferroelectrics. 2014;470(1):159-167.
doi:10.1080/00150193.2014.923229 .

Mitić, V.V., Paunović, V., Pavlović, Vladimir, "Microstructure and Dielectric Properties of Rare-Earth Doped BaTiO3 Ceramics" in Ferroelectrics, 470, no. 1 (2014):159-167,
https://doi.org/10.1080/00150193.2014.923229 . .

TY  - JOUR
AU  - Purenović, J.
AU  - Mitić, V.V.
AU  - Kocić, Lj.
AU  - Pavlović, Vladimir
AU  - Randjelović, M.
AU  - Purenović, M.
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3285
AB  - Porous aluminium-silicate ceramics, modified by alloying with magnesium and microalloying with alluminium belongs to a group of advanced multifunctional ceramics materials. This multiphase solid-solid system has predominantly amorphous microstructure and micro morphology. Intergranular and interphase areas are very complex, because they represent areas, where numbered processes and interactions take place, making new boundaries and regions with fractal nature. Fractal analysis of intergranular microstructure has included determination of ceramic grain fractal dimension by using Richardson method. Considering the fractal nature of intergranular contacts, it is possible to establish correlation between material electrical properties and fractal analysis, as a tool for future correlation with microstructure characterization.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Intergranular Area Microalloyed Aluminium-silicate Ceramics Fractal Analysis
EP  - 126
IS  - 1
SP  - 117
VL  - 45
DO  - 10.2298/SOS1301117P
ER  - 

@article{
author = "Purenović, J. and Mitić, V.V. and Kocić, Lj. and Pavlović, Vladimir and Randjelović, M. and Purenović, M.",
year = "2013",
abstract = "Porous aluminium-silicate ceramics, modified by alloying with magnesium and microalloying with alluminium belongs to a group of advanced multifunctional ceramics materials. This multiphase solid-solid system has predominantly amorphous microstructure and micro morphology. Intergranular and interphase areas are very complex, because they represent areas, where numbered processes and interactions take place, making new boundaries and regions with fractal nature. Fractal analysis of intergranular microstructure has included determination of ceramic grain fractal dimension by using Richardson method. Considering the fractal nature of intergranular contacts, it is possible to establish correlation between material electrical properties and fractal analysis, as a tool for future correlation with microstructure characterization.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Intergranular Area Microalloyed Aluminium-silicate Ceramics Fractal Analysis",
pages = "126-117",
number = "1",
volume = "45",
doi = "10.2298/SOS1301117P"
}

Purenović, J., Mitić, V.V., Kocić, Lj., Pavlović, V., Randjelović, M.,& Purenović, M.. (2013). Intergranular Area Microalloyed Aluminium-silicate Ceramics Fractal Analysis. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 45(1), 117-126.
https://doi.org/10.2298/SOS1301117P

Purenović J, Mitić V, Kocić L, Pavlović V, Randjelović M, Purenović M. Intergranular Area Microalloyed Aluminium-silicate Ceramics Fractal Analysis. in Science of Sintering. 2013;45(1):117-126.
doi:10.2298/SOS1301117P .

Purenović, J., Mitić, V.V., Kocić, Lj., Pavlović, Vladimir, Randjelović, M., Purenović, M., "Intergranular Area Microalloyed Aluminium-silicate Ceramics Fractal Analysis" in Science of Sintering, 45, no. 1 (2013):117-126,
https://doi.org/10.2298/SOS1301117P . .

TY  - JOUR
AU  - Mitić, V.V.
AU  - Paunović, V.
AU  - Janković, S.
AU  - Pavlović, Vladimir
AU  - Antolović, I.
AU  - Rancić, D.
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3318
AB  - In this study, in order to establish grain shapes of sintered ceramics, new approach on correlation between microstructure and doped BaTiO3 -ceramics properties based, on Voronoi model and mathematical statistics calculations on fractal geometry, has been developed. BaTiO3-ceramics doped with Yb2O3 (from 0.1 to 1.0wt% of Yb) were prepared by using conventional solid state procedure and were sintered from 1320 degrees C to 1380 degrees C for four hours. The microstructure of sintered specimens was investigated by Scanning electron microscope JEOL-SEM-5300. For better and deeper characterization and understanding of the ceramics material microstructure, the methods which include the fractal nature structure, and also Voronoi model and mathematical statistics calculations, are applied. In our research the Voronoi is one specific interface between fractal structure nature and different stochastically contact surfaces, defined by statistical mathematical methods. Also, the Voronoi model practically provided possibility to control the ceramics microstructure fractal nature. Mathematical statistic methods enabled establishing the real model for the prognosis based on correlation: synthesis-structures-properties.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Electronic Ceramic Structure within the Voronoi Cells Model and Microstructure Fractals Contacts Surfaces New Frontier Applications
EP  - 232
IS  - 2
SP  - 223
VL  - 45
DO  - 10.2298/SOS1302223M
ER  - 

@article{
author = "Mitić, V.V. and Paunović, V. and Janković, S. and Pavlović, Vladimir and Antolović, I. and Rancić, D.",
year = "2013",
abstract = "In this study, in order to establish grain shapes of sintered ceramics, new approach on correlation between microstructure and doped BaTiO3 -ceramics properties based, on Voronoi model and mathematical statistics calculations on fractal geometry, has been developed. BaTiO3-ceramics doped with Yb2O3 (from 0.1 to 1.0wt% of Yb) were prepared by using conventional solid state procedure and were sintered from 1320 degrees C to 1380 degrees C for four hours. The microstructure of sintered specimens was investigated by Scanning electron microscope JEOL-SEM-5300. For better and deeper characterization and understanding of the ceramics material microstructure, the methods which include the fractal nature structure, and also Voronoi model and mathematical statistics calculations, are applied. In our research the Voronoi is one specific interface between fractal structure nature and different stochastically contact surfaces, defined by statistical mathematical methods. Also, the Voronoi model practically provided possibility to control the ceramics microstructure fractal nature. Mathematical statistic methods enabled establishing the real model for the prognosis based on correlation: synthesis-structures-properties.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Electronic Ceramic Structure within the Voronoi Cells Model and Microstructure Fractals Contacts Surfaces New Frontier Applications",
pages = "232-223",
number = "2",
volume = "45",
doi = "10.2298/SOS1302223M"
}

Mitić, V.V., Paunović, V., Janković, S., Pavlović, V., Antolović, I.,& Rancić, D.. (2013). Electronic Ceramic Structure within the Voronoi Cells Model and Microstructure Fractals Contacts Surfaces New Frontier Applications. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 45(2), 223-232.
https://doi.org/10.2298/SOS1302223M

Mitić V, Paunović V, Janković S, Pavlović V, Antolović I, Rancić D. Electronic Ceramic Structure within the Voronoi Cells Model and Microstructure Fractals Contacts Surfaces New Frontier Applications. in Science of Sintering. 2013;45(2):223-232.
doi:10.2298/SOS1302223M .

Mitić, V.V., Paunović, V., Janković, S., Pavlović, Vladimir, Antolović, I., Rancić, D., "Electronic Ceramic Structure within the Voronoi Cells Model and Microstructure Fractals Contacts Surfaces New Frontier Applications" in Science of Sintering, 45, no. 2 (2013):223-232,
https://doi.org/10.2298/SOS1302223M . .

TY  - CONF
AU  - Mitić, V.V.
AU  - Pavlović, Vladimir
AU  - Paunović, V.
AU  - Miljković, M.
AU  - Nedin, J.
AU  - Dukić, M.
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2821
AB  - Among the modified BaTiO3 La doped BaTiO3-ceramics are intensively studied because of their attractive ferroelectric properties that can be tailored to meet the strong demands for various electroceramic components. In this investigation La/Mn codoped BaTiO3 with different La2O3 content, ranging from 0.1 to 5.0 at% La, was investigated regarding their microstructural characteristics. Microstructural and compositional studies were performed by scanning electron microscopy (JEOL-JSM 5300) equipped with EDS (QX 2000S) system. Depending on the amounts of dopants and sintering temperature a huge range of microstructure features can be observed in doped ceramics, together with the appearances of secondary phases that are formed above eutectic temperature. The morphology of ceramics grains pointed out the validity of developing new structure analytical methods, based on different grains' shape geometries. The new correlation between microstructure of doped BaTiO3-ceramics, based on fractal geometry and contact surface probability, has been developed. Using the fractals and statistics of the grains contact surface, a reconstruction of microstructure configurations, as grains shapes or intergranular contacts, has been successfully done. The directions of possible materials properties prognosis are determined according to the correlations synthesis-structure-property.
PB  - Advances and Applications in Electroceramics II - Materials Science and Technology 2011 Conference and Exhibition, MS and T 2011
C3  - Ceramic Transactions
T1  - The influence of consolidation parameters on grain contact surfaces BaTiO3-ceramics
EP  - 205
SP  - 199
VL  - 235
DO  - 10.1002/9781118511350.ch20
ER  - 

@conference{
author = "Mitić, V.V. and Pavlović, Vladimir and Paunović, V. and Miljković, M. and Nedin, J. and Dukić, M.",
year = "2012",
abstract = "Among the modified BaTiO3 La doped BaTiO3-ceramics are intensively studied because of their attractive ferroelectric properties that can be tailored to meet the strong demands for various electroceramic components. In this investigation La/Mn codoped BaTiO3 with different La2O3 content, ranging from 0.1 to 5.0 at% La, was investigated regarding their microstructural characteristics. Microstructural and compositional studies were performed by scanning electron microscopy (JEOL-JSM 5300) equipped with EDS (QX 2000S) system. Depending on the amounts of dopants and sintering temperature a huge range of microstructure features can be observed in doped ceramics, together with the appearances of secondary phases that are formed above eutectic temperature. The morphology of ceramics grains pointed out the validity of developing new structure analytical methods, based on different grains' shape geometries. The new correlation between microstructure of doped BaTiO3-ceramics, based on fractal geometry and contact surface probability, has been developed. Using the fractals and statistics of the grains contact surface, a reconstruction of microstructure configurations, as grains shapes or intergranular contacts, has been successfully done. The directions of possible materials properties prognosis are determined according to the correlations synthesis-structure-property.",
publisher = "Advances and Applications in Electroceramics II - Materials Science and Technology 2011 Conference and Exhibition, MS and T 2011",
journal = "Ceramic Transactions",
title = "The influence of consolidation parameters on grain contact surfaces BaTiO3-ceramics",
pages = "205-199",
volume = "235",
doi = "10.1002/9781118511350.ch20"
}

Mitić, V.V., Pavlović, V., Paunović, V., Miljković, M., Nedin, J.,& Dukić, M.. (2012). The influence of consolidation parameters on grain contact surfaces BaTiO3-ceramics. in Ceramic Transactions
Advances and Applications in Electroceramics II - Materials Science and Technology 2011 Conference and Exhibition, MS and T 2011., 235, 199-205.
https://doi.org/10.1002/9781118511350.ch20

Mitić V, Pavlović V, Paunović V, Miljković M, Nedin J, Dukić M. The influence of consolidation parameters on grain contact surfaces BaTiO3-ceramics. in Ceramic Transactions. 2012;235:199-205.
doi:10.1002/9781118511350.ch20 .

Mitić, V.V., Pavlović, Vladimir, Paunović, V., Miljković, M., Nedin, J., Dukić, M., "The influence of consolidation parameters on grain contact surfaces BaTiO3-ceramics" in Ceramic Transactions, 235 (2012):199-205,
https://doi.org/10.1002/9781118511350.ch20 . .

TY  - JOUR
AU  - Mitić, V.V.
AU  - Paunović, V.
AU  - Purenović, J.
AU  - Kocić, Lj
AU  - Pavlović, Vladimir
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2965
AB  - In the process of BaTiO3 ceramics consolidation, technological parameters like sintering temperature, pressing pressure and additives significantly determine the microstructure and electrical properties. Slight change of a particular sintering parameter can considerably change the microstructure as well as the electrical parameters. Structural complex grain-contact-grain is observed on Ho doped BaTiO3 ceramics, sintered from 1320 to 1380 degrees C. The new configuration model of ceramic grain contact surfaces is presented in this paper. This model is based on Coble's two-sphere approximation and its generalisation to ellipsoidal geometry. The integral contact surface directly influences the value of the total ceramic capacity. Fractal method is applied for intergrain contact analysis. Ceramic grains are considered to have fractal surface (as it is elsewhere in nature) and, therefore, fractal structure influences on the dielectric properties of BaTiO3 ceramics. The obtained results give better understanding of ceramic microstructure with the final aim to establish significant interrelation among processing, structural and electrical parameters.
PB  - Maney Publishing, Leeds
T2  - Advances in Applied Ceramics
T1  - Processing parameter influence on BaTiO3 ceramic fractal microstructure and dielectric characteristics
EP  - 366
IS  - 5-6
SP  - 360
VL  - 111
DO  - 10.1179/1743676112Y.0000000026
ER  - 

@article{
author = "Mitić, V.V. and Paunović, V. and Purenović, J. and Kocić, Lj and Pavlović, Vladimir",
year = "2012",
abstract = "In the process of BaTiO3 ceramics consolidation, technological parameters like sintering temperature, pressing pressure and additives significantly determine the microstructure and electrical properties. Slight change of a particular sintering parameter can considerably change the microstructure as well as the electrical parameters. Structural complex grain-contact-grain is observed on Ho doped BaTiO3 ceramics, sintered from 1320 to 1380 degrees C. The new configuration model of ceramic grain contact surfaces is presented in this paper. This model is based on Coble's two-sphere approximation and its generalisation to ellipsoidal geometry. The integral contact surface directly influences the value of the total ceramic capacity. Fractal method is applied for intergrain contact analysis. Ceramic grains are considered to have fractal surface (as it is elsewhere in nature) and, therefore, fractal structure influences on the dielectric properties of BaTiO3 ceramics. The obtained results give better understanding of ceramic microstructure with the final aim to establish significant interrelation among processing, structural and electrical parameters.",
publisher = "Maney Publishing, Leeds",
journal = "Advances in Applied Ceramics",
title = "Processing parameter influence on BaTiO3 ceramic fractal microstructure and dielectric characteristics",
pages = "366-360",
number = "5-6",
volume = "111",
doi = "10.1179/1743676112Y.0000000026"
}

Mitić, V.V., Paunović, V., Purenović, J., Kocić, L.,& Pavlović, V.. (2012). Processing parameter influence on BaTiO3 ceramic fractal microstructure and dielectric characteristics. in Advances in Applied Ceramics
Maney Publishing, Leeds., 111(5-6), 360-366.
https://doi.org/10.1179/1743676112Y.0000000026

Mitić V, Paunović V, Purenović J, Kocić L, Pavlović V. Processing parameter influence on BaTiO3 ceramic fractal microstructure and dielectric characteristics. in Advances in Applied Ceramics. 2012;111(5-6):360-366.
doi:10.1179/1743676112Y.0000000026 .

Mitić, V.V., Paunović, V., Purenović, J., Kocić, Lj, Pavlović, Vladimir, "Processing parameter influence on BaTiO3 ceramic fractal microstructure and dielectric characteristics" in Advances in Applied Ceramics, 111, no. 5-6 (2012):360-366,
https://doi.org/10.1179/1743676112Y.0000000026 . .

TY  - JOUR
AU  - Purenović, J.
AU  - Mitić, V.V.
AU  - Kocić, Lj.
AU  - Pavlović, Vladimir
AU  - Paunović, V.
AU  - Purenović, M.
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2708
AB  - The addition of Mg(2)(NO)(3) and some active additives, composed of Al salts, to the mixtures of kaolinite and bentonite can provide clay compositions which, after sintering at high temperatures, produce very porous ceramics with microcrystalline and amorphous regions and highly developed metalized surfaces (mainly with magnesium surplus). Characterization of sintered samples was done before and after treatment in "synthetic water", i.e. in aqueous solution of arsenic-salt. Microstructure investigations have revealed non-uniform and highly porous structure with broad distribution of grain size, specifically shaped grains and high degree of agglomeration. Electrical characterization was estimated by determining dielectric constant and electrical resistivity in function of active additives amount and sintering temperature. Fractal analysis has included determination of grain contour fractal dimension.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Electrical Properties and Microstructure Fractal Analysis of Magnesium-Modified Aluminium-Silicate Ceramics
EP  - 204
IS  - 2
SP  - 193
VL  - 43
DO  - 10.2298/SOS1102193P
ER  - 

@article{
author = "Purenović, J. and Mitić, V.V. and Kocić, Lj. and Pavlović, Vladimir and Paunović, V. and Purenović, M.",
year = "2011",
abstract = "The addition of Mg(2)(NO)(3) and some active additives, composed of Al salts, to the mixtures of kaolinite and bentonite can provide clay compositions which, after sintering at high temperatures, produce very porous ceramics with microcrystalline and amorphous regions and highly developed metalized surfaces (mainly with magnesium surplus). Characterization of sintered samples was done before and after treatment in "synthetic water", i.e. in aqueous solution of arsenic-salt. Microstructure investigations have revealed non-uniform and highly porous structure with broad distribution of grain size, specifically shaped grains and high degree of agglomeration. Electrical characterization was estimated by determining dielectric constant and electrical resistivity in function of active additives amount and sintering temperature. Fractal analysis has included determination of grain contour fractal dimension.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Electrical Properties and Microstructure Fractal Analysis of Magnesium-Modified Aluminium-Silicate Ceramics",
pages = "204-193",
number = "2",
volume = "43",
doi = "10.2298/SOS1102193P"
}

Purenović, J., Mitić, V.V., Kocić, Lj., Pavlović, V., Paunović, V.,& Purenović, M.. (2011). Electrical Properties and Microstructure Fractal Analysis of Magnesium-Modified Aluminium-Silicate Ceramics. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 43(2), 193-204.
https://doi.org/10.2298/SOS1102193P

Purenović J, Mitić V, Kocić L, Pavlović V, Paunović V, Purenović M. Electrical Properties and Microstructure Fractal Analysis of Magnesium-Modified Aluminium-Silicate Ceramics. in Science of Sintering. 2011;43(2):193-204.
doi:10.2298/SOS1102193P .

Purenović, J., Mitić, V.V., Kocić, Lj., Pavlović, Vladimir, Paunović, V., Purenović, M., "Electrical Properties and Microstructure Fractal Analysis of Magnesium-Modified Aluminium-Silicate Ceramics" in Science of Sintering, 43, no. 2 (2011):193-204,
https://doi.org/10.2298/SOS1102193P . .

TY  - JOUR
AU  - Mitić, V.V.
AU  - Paunović, V.
AU  - Pavlović, Vladimir
AU  - Zivković, Lj
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2610
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 10-60 mu m, while with the higher dopant concentration the grain, size ranged between 2-15 mu m. 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  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Sintering Process Influence on Microstructure and Intergranular Impedance of Rare-Earth Modified BaTiO3-Ceramics
EP  - 287
IS  - 3
SP  - 277
VL  - 43
DO  - 10.2298/SOS1103277M
ER  - 

@article{
author = "Mitić, V.V. and Paunović, V. and Pavlović, Vladimir and Zivković, Lj",
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 10-60 mu m, while with the higher dopant concentration the grain, size ranged between 2-15 mu m. 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 = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Sintering Process Influence on Microstructure and Intergranular Impedance of Rare-Earth Modified BaTiO3-Ceramics",
pages = "287-277",
number = "3",
volume = "43",
doi = "10.2298/SOS1103277M"
}

Mitić, V.V., Paunović, V., Pavlović, V.,& Zivković, L.. (2011). Sintering Process Influence on Microstructure and Intergranular Impedance of Rare-Earth Modified BaTiO3-Ceramics. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 43(3), 277-287.
https://doi.org/10.2298/SOS1103277M

Mitić V, Paunović V, Pavlović V, Zivković L. Sintering Process Influence on Microstructure and Intergranular Impedance of Rare-Earth Modified BaTiO3-Ceramics. in Science of Sintering. 2011;43(3):277-287.
doi:10.2298/SOS1103277M .

Mitić, V.V., Paunović, V., Pavlović, Vladimir, Zivković, Lj, "Sintering Process Influence on Microstructure and Intergranular Impedance of Rare-Earth Modified BaTiO3-Ceramics" in Science of Sintering, 43, no. 3 (2011):277-287,
https://doi.org/10.2298/SOS1103277M . .

TY  - CONF
AU  - Mitić, V.V.
AU  - Pavlović, Vladimir
AU  - Paunović, V.
AU  - Purenović, J.
AU  - Kocić, Lj.
AU  - Janković, S.
AU  - Antolović, I.
AU  - Rancić, D.
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2446
AB  - Ferroelectric BaTiO3 as one of the most important ceramics materials in electronic, used on wide range of applications, can be modified with various dopant ions. In this paper, the influence of Er2O3, Yb2O3, Ho2O3 and La2O3, on microstructure, microelectronic and dielectric properties of BaTiO3-ceramics has been investigated. The solid solubility of rare-earth ions in the BaTiO3 perovskite structure has been studied by different methods of structural analysis including SEM-JEOL 5300 and energy dispersive spectrometer (EDS) system. BaTiO3-ceramics doped with 0.01 up to 1 wt% of rare-earth additives were prepared by conventional solid state procedure and sintered from 1320 degrees C to 1380 degrees C for four hours. We also applied the fractal method in microstructure analysis of sintered ceramics, especially as influence on intergranular capacitor and dielectric peoperties of BaTiO3-ceramics. This fractal nature effect has been used for better understanding integrated microelectronics characteristics and circuits.
PB  - Advanced Processing and Manufacturing Technologies for Structural and Multifunctional Materials V - 35th International Conference on Advanced Ceramics and Composites, ICACC
C3  - Ceramic Engineering and Science Proceedings
T1  - Intergranular properties and structural fractal analysis of batio3-ceramics doped by rare earth additives
EP  - 132
IS  - 8
SP  - 121
VL  - 32
DO  - 10.1002/9781118095379.ch14
ER  - 

@conference{
author = "Mitić, V.V. and Pavlović, Vladimir and Paunović, V. and Purenović, J. and Kocić, Lj. and Janković, S. and Antolović, I. and Rancić, D.",
year = "2011",
abstract = "Ferroelectric BaTiO3 as one of the most important ceramics materials in electronic, used on wide range of applications, can be modified with various dopant ions. In this paper, the influence of Er2O3, Yb2O3, Ho2O3 and La2O3, on microstructure, microelectronic and dielectric properties of BaTiO3-ceramics has been investigated. The solid solubility of rare-earth ions in the BaTiO3 perovskite structure has been studied by different methods of structural analysis including SEM-JEOL 5300 and energy dispersive spectrometer (EDS) system. BaTiO3-ceramics doped with 0.01 up to 1 wt% of rare-earth additives were prepared by conventional solid state procedure and sintered from 1320 degrees C to 1380 degrees C for four hours. We also applied the fractal method in microstructure analysis of sintered ceramics, especially as influence on intergranular capacitor and dielectric peoperties of BaTiO3-ceramics. This fractal nature effect has been used for better understanding integrated microelectronics characteristics and circuits.",
publisher = "Advanced Processing and Manufacturing Technologies for Structural and Multifunctional Materials V - 35th International Conference on Advanced Ceramics and Composites, ICACC",
journal = "Ceramic Engineering and Science Proceedings",
title = "Intergranular properties and structural fractal analysis of batio3-ceramics doped by rare earth additives",
pages = "132-121",
number = "8",
volume = "32",
doi = "10.1002/9781118095379.ch14"
}

Mitić, V.V., Pavlović, V., Paunović, V., Purenović, J., Kocić, Lj., Janković, S., Antolović, I.,& Rancić, D.. (2011). Intergranular properties and structural fractal analysis of batio3-ceramics doped by rare earth additives. in Ceramic Engineering and Science Proceedings
Advanced Processing and Manufacturing Technologies for Structural and Multifunctional Materials V - 35th International Conference on Advanced Ceramics and Composites, ICACC., 32(8), 121-132.
https://doi.org/10.1002/9781118095379.ch14

Mitić V, Pavlović V, Paunović V, Purenović J, Kocić L, Janković S, Antolović I, Rancić D. Intergranular properties and structural fractal analysis of batio3-ceramics doped by rare earth additives. in Ceramic Engineering and Science Proceedings. 2011;32(8):121-132.
doi:10.1002/9781118095379.ch14 .

Mitić, V.V., Pavlović, Vladimir, Paunović, V., Purenović, J., Kocić, Lj., Janković, S., Antolović, I., Rancić, D., "Intergranular properties and structural fractal analysis of batio3-ceramics doped by rare earth additives" in Ceramic Engineering and Science Proceedings, 32, no. 8 (2011):121-132,
https://doi.org/10.1002/9781118095379.ch14 . .