The Electrical Characteristics of Nb doped BaTiO3 Ceramics
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.
Keywords:
BaTiO3 ceramics / doping / Nb / dielectric propertiesSource:
Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade, 2014, 105-105Publisher:
- Belgrade : Serbian Ceramic Society
Note:
- III Serbian Ceramic Society Conference - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts; September 29 - October 1, 2014; Belgrade
Collections
Institution/Community
VinčaTY - 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 .