Influence of Sm2O3 on the Microstructure and Dielectric Characteristics of Codoped BaTiO3 Ceramics
Apstrakt
The samples of Sm/Mn codoped BaTiO3 ceramics, prepared by conventional solid state procedure with dopant concentrations ranged from 0.1 up to 5.0 at%, were investigated in this paper. The specimens were sintered at 1290°C and 1350°C in an air atmosphere for two hours. The low doped samples demonstrated the mainly uniform and homogeneous microstructure with average grain sizes ranged from 0.3 μm to 5.0 μm. The appearances of secondary abnormal grains in fine grain matrix and core-shell structure were observed in highly doped Sm/BaTiO3 sintered at 1350°C. Dielectric measurements were carried out as a function of temperature up to 200°C. The low doped samples, sintered at 1350°C, display the high value of dielectric permittivity (εr=6800 ) at room temperature. A nearly flat permittivity-response was obtained in specimens with 5.0 at% additive content. Using a modified Curie-Weiss low the Curie-like constant C´ and a critical exponent γ were calculated. The obtained values of γ pointed out... the diffuse phase transformation in heavily doped BaTiO3 samples.
Ključne reči:
BaTiO3 ceramics / Sm2O3 / dopingIzvor:
Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade, 2014, 62-62Izdavač:
- Belgrade : Serbian Ceramic Society
Finansiranje / projekti:
Napomena:
- 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
Kolekcije
Institucija/grupa
VinčaTY - CONF AU - Paunović, Vesna AU - Mitić, Vojislav V. AU - Živković, Ljiljana AU - Kocić, Ljubiša PY - 2014 UR - http://dais.sanu.ac.rs/123456789/595 UR - https://vinar.vin.bg.ac.rs/handle/123456789/7488 AB - The samples of Sm/Mn codoped BaTiO3 ceramics, prepared by conventional solid state procedure with dopant concentrations ranged from 0.1 up to 5.0 at%, were investigated in this paper. The specimens were sintered at 1290°C and 1350°C in an air atmosphere for two hours. The low doped samples demonstrated the mainly uniform and homogeneous microstructure with average grain sizes ranged from 0.3 μm to 5.0 μm. The appearances of secondary abnormal grains in fine grain matrix and core-shell structure were observed in highly doped Sm/BaTiO3 sintered at 1350°C. Dielectric measurements were carried out as a function of temperature up to 200°C. The low doped samples, sintered at 1350°C, display the high value of dielectric permittivity (εr=6800 ) at room temperature. A nearly flat permittivity-response was obtained in specimens with 5.0 at% additive content. Using a modified Curie-Weiss low the Curie-like constant C´ and a critical exponent γ were calculated. The obtained values of γ pointed out the diffuse phase transformation in heavily doped BaTiO3 samples. 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 - Influence of Sm2O3 on the Microstructure and Dielectric Characteristics of Codoped BaTiO3 Ceramics SP - 62 EP - 62 UR - https://hdl.handle.net/21.15107/rcub_vinar_7488 ER -
@conference{ author = "Paunović, Vesna and Mitić, Vojislav V. and Živković, Ljiljana and Kocić, Ljubiša", year = "2014", abstract = "The samples of Sm/Mn codoped BaTiO3 ceramics, prepared by conventional solid state procedure with dopant concentrations ranged from 0.1 up to 5.0 at%, were investigated in this paper. The specimens were sintered at 1290°C and 1350°C in an air atmosphere for two hours. The low doped samples demonstrated the mainly uniform and homogeneous microstructure with average grain sizes ranged from 0.3 μm to 5.0 μm. The appearances of secondary abnormal grains in fine grain matrix and core-shell structure were observed in highly doped Sm/BaTiO3 sintered at 1350°C. Dielectric measurements were carried out as a function of temperature up to 200°C. The low doped samples, sintered at 1350°C, display the high value of dielectric permittivity (εr=6800 ) at room temperature. A nearly flat permittivity-response was obtained in specimens with 5.0 at% additive content. Using a modified Curie-Weiss low the Curie-like constant C´ and a critical exponent γ were calculated. The obtained values of γ pointed out the diffuse phase transformation in heavily doped BaTiO3 samples.", 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 = "Influence of Sm2O3 on the Microstructure and Dielectric Characteristics of Codoped BaTiO3 Ceramics", pages = "62-62", url = "https://hdl.handle.net/21.15107/rcub_vinar_7488" }
Paunović, V., Mitić, V. V., Živković, L.,& Kocić, L.. (2014). Influence of Sm2O3 on the Microstructure and Dielectric Characteristics of Codoped 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., 62-62. https://hdl.handle.net/21.15107/rcub_vinar_7488
Paunović V, Mitić VV, Živković L, Kocić L. Influence of Sm2O3 on the Microstructure and Dielectric Characteristics of Codoped 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;:62-62. https://hdl.handle.net/21.15107/rcub_vinar_7488 .
Paunović, Vesna, Mitić, Vojislav V., Živković, Ljiljana, Kocić, Ljubiša, "Influence of Sm2O3 on the Microstructure and Dielectric Characteristics of Codoped 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):62-62, https://hdl.handle.net/21.15107/rcub_vinar_7488 .