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

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

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

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

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

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

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

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

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

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