Microstructure and dielectric properties of Dy/Mn doped BaTiO3 ceramics
Апстракт
Dy/Mn doped BaTiO3 with different Dy2O3 contents, ranging from 0.1 to 5.0 at% Dy, were investigated regarding their microstructural and dielectric characteristics. The content of 0.05 at% Mn was constant in all the investigated samples. The samples were prepared by the conventional solid state reaction and sintered at 1290°, and 1350 °C in air atmosphere for 2 h. The low doped samples (0.1 and 0.5 at% Dy) exhibit mainly fairly uniform and homogeneous microstructure with average grain sizes ranged from 0.3 μm to 3.0 μm. At 1350 °C, the appearance of secondary, abnormal, grains in the fine grain matrix and core–shell structure were observed in highly doped Dy/BaTiO3. Dielectric measurements were carried out as a function of temperature up to 180 °C. The low doped samples sintered at 1350 °C, display the high value of dielectric permittivity at room temperature, 5600 for 0.1Dy/BaTiO3. A nearly flat permittivity–temperature response was obtained in specimens with 2.0 and 5.0 at% additive c...ontent. Using a Curie–Weiss and modified Curie–Weiss low, the Curie constant (C), Curie like constant (C′), Curie temperature (TC) and a critical exponent (γ) were calculated. The obtained values of γ pointed out the diffuse phase transformation in highly doped BaTiO3 samples.
Кључне речи:
sintering / microstructure / dielectric properties / BaTiO3Извор:
Ceramics International, 2014, 4277-4284Издавач:
- Elsevier
Финансирање / пројекти:
- Усмерена синтеза, структура и својства мултифункционалних материјала (RS-MESTD-Basic Research (BR or ON)-172057)
DOI: 10.1016/j.ceramint.2013.08.092
ISSN: 0272-8842
WoS: 000331017500058
Scopus: 2-s2.0-84891371827
Колекције
Институција/група
VinčaTY - JOUR AU - Paunović, Vesna AU - Mitić, Vojislav V. AU - Prijić, Z. AU - Živković, Ljiljana PY - 2014 UR - http://dais.sanu.ac.rs/123456789/563 UR - https://vinar.vin.bg.ac.rs/handle/123456789/7479 AB - Dy/Mn doped BaTiO3 with different Dy2O3 contents, ranging from 0.1 to 5.0 at% Dy, were investigated regarding their microstructural and dielectric characteristics. The content of 0.05 at% Mn was constant in all the investigated samples. The samples were prepared by the conventional solid state reaction and sintered at 1290°, and 1350 °C in air atmosphere for 2 h. The low doped samples (0.1 and 0.5 at% Dy) exhibit mainly fairly uniform and homogeneous microstructure with average grain sizes ranged from 0.3 μm to 3.0 μm. At 1350 °C, the appearance of secondary, abnormal, grains in the fine grain matrix and core–shell structure were observed in highly doped Dy/BaTiO3. Dielectric measurements were carried out as a function of temperature up to 180 °C. The low doped samples sintered at 1350 °C, display the high value of dielectric permittivity at room temperature, 5600 for 0.1Dy/BaTiO3. A nearly flat permittivity–temperature response was obtained in specimens with 2.0 and 5.0 at% additive content. Using a Curie–Weiss and modified Curie–Weiss low, the Curie constant (C), Curie like constant (C′), Curie temperature (TC) and a critical exponent (γ) were calculated. The obtained values of γ pointed out the diffuse phase transformation in highly doped BaTiO3 samples. PB - Elsevier T2 - Ceramics International T1 - Microstructure and dielectric properties of Dy/Mn doped BaTiO3 ceramics SP - 4277 EP - 4284 DO - 10.1016/j.ceramint.2013.08.092 ER -
@article{ author = "Paunović, Vesna and Mitić, Vojislav V. and Prijić, Z. and Živković, Ljiljana", year = "2014", abstract = "Dy/Mn doped BaTiO3 with different Dy2O3 contents, ranging from 0.1 to 5.0 at% Dy, were investigated regarding their microstructural and dielectric characteristics. The content of 0.05 at% Mn was constant in all the investigated samples. The samples were prepared by the conventional solid state reaction and sintered at 1290°, and 1350 °C in air atmosphere for 2 h. The low doped samples (0.1 and 0.5 at% Dy) exhibit mainly fairly uniform and homogeneous microstructure with average grain sizes ranged from 0.3 μm to 3.0 μm. At 1350 °C, the appearance of secondary, abnormal, grains in the fine grain matrix and core–shell structure were observed in highly doped Dy/BaTiO3. Dielectric measurements were carried out as a function of temperature up to 180 °C. The low doped samples sintered at 1350 °C, display the high value of dielectric permittivity at room temperature, 5600 for 0.1Dy/BaTiO3. A nearly flat permittivity–temperature response was obtained in specimens with 2.0 and 5.0 at% additive content. Using a Curie–Weiss and modified Curie–Weiss low, the Curie constant (C), Curie like constant (C′), Curie temperature (TC) and a critical exponent (γ) were calculated. The obtained values of γ pointed out the diffuse phase transformation in highly doped BaTiO3 samples.", publisher = "Elsevier", journal = "Ceramics International", title = "Microstructure and dielectric properties of Dy/Mn doped BaTiO3 ceramics", pages = "4277-4284", doi = "10.1016/j.ceramint.2013.08.092" }
Paunović, V., Mitić, V. V., Prijić, Z.,& Živković, L.. (2014). Microstructure and dielectric properties of Dy/Mn doped BaTiO3 ceramics. in Ceramics International Elsevier., 4277-4284. https://doi.org/10.1016/j.ceramint.2013.08.092
Paunović V, Mitić VV, Prijić Z, Živković L. Microstructure and dielectric properties of Dy/Mn doped BaTiO3 ceramics. in Ceramics International. 2014;:4277-4284. doi:10.1016/j.ceramint.2013.08.092 .
Paunović, Vesna, Mitić, Vojislav V., Prijić, Z., Živković, Ljiljana, "Microstructure and dielectric properties of Dy/Mn doped BaTiO3 ceramics" in Ceramics International (2014):4277-4284, https://doi.org/10.1016/j.ceramint.2013.08.092 . .