Structure, dielectric properties and temperature stability of BaTiO 3-Bi(Mg1/2Ti1/2)O3 perovskite solid solutions

Bo Xiong; Hua Hao; Shujun Zhang; Hanxing Liu; Minghe Cao

doi:10.1111/j.1551-2916.2011.04519.x

Structure, dielectric properties and temperature stability of BaTiO ₃-Bi(Mg_1/2Ti_1/2)O₃ perovskite solid solutions

Bo Xiong, Hua Hao, Shujun Zhang, Hanxing Liu, Minghe Cao

Materials Research Institute (MRI)

Research output: Contribution to journal › Article

111 Scopus citations

Abstract

(1-x)BaTiO₃-xBi(Mg_1/2Ti_1/2)O₃ [(1-x)BT-xBMT] polycrystalline ceramics were obtained via solid-state processing techniques. The solubility limit for (1-x)BT-xBMT was determined to be about x=0.07. A systematic structural change from the ferroelectric tetragonal phase to pseudocubic phase was observed at about x≥0.05 at room temperature. Dielectric measurements revealed a gradual change from normal ferroelectric of pure BaTiO₃ to highly dispersive relaxor-like characteristics in the solid solution with 30-60 mol% Bi(Mg_1/2Ti_1/2)O ₃, showing low-temperature coefficients of capacitance over a wide temperature range. The properties of Nb₂O₅-doped 0.85BT-0.15BMT ceramics were investigated to better understand the formation mechanism of core-shell structure, for further improving the temperature stability of the dielectric behavior.

Original language	English (US)
Pages (from-to)	3412-3417
Number of pages	6
Journal	Journal of the American Ceramic Society
Volume	94
Issue number	10
DOIs	https://doi.org/10.1111/j.1551-2916.2011.04519.x
State	Published - Oct 1 2011

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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Xiong, B., Hao, H., Zhang, S., Liu, H., & Cao, M. (2011). Structure, dielectric properties and temperature stability of BaTiO ₃-Bi(Mg_1/2Ti_1/2)O₃ perovskite solid solutions. Journal of the American Ceramic Society, 94(10), 3412-3417. https://doi.org/10.1111/j.1551-2916.2011.04519.x

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abstract = "(1-x)BaTiO3-xBi(Mg1/2Ti1/2)O3 [(1-x)BT-xBMT] polycrystalline ceramics were obtained via solid-state processing techniques. The solubility limit for (1-x)BT-xBMT was determined to be about x=0.07. A systematic structural change from the ferroelectric tetragonal phase to pseudocubic phase was observed at about x≥0.05 at room temperature. Dielectric measurements revealed a gradual change from normal ferroelectric of pure BaTiO3 to highly dispersive relaxor-like characteristics in the solid solution with 30-60 mol% Bi(Mg1/2Ti1/2)O 3, showing low-temperature coefficients of capacitance over a wide temperature range. The properties of Nb2O5-doped 0.85BT-0.15BMT ceramics were investigated to better understand the formation mechanism of core-shell structure, for further improving the temperature stability of the dielectric behavior.",

author = "Bo Xiong and Hua Hao and Shujun Zhang and Hanxing Liu and Minghe Cao",

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AU - Xiong, Bo

AU - Hao, Hua

AU - Zhang, Shujun

AU - Liu, Hanxing

AU - Cao, Minghe

PY - 2011/10/1

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N2 - (1-x)BaTiO3-xBi(Mg1/2Ti1/2)O3 [(1-x)BT-xBMT] polycrystalline ceramics were obtained via solid-state processing techniques. The solubility limit for (1-x)BT-xBMT was determined to be about x=0.07. A systematic structural change from the ferroelectric tetragonal phase to pseudocubic phase was observed at about x≥0.05 at room temperature. Dielectric measurements revealed a gradual change from normal ferroelectric of pure BaTiO3 to highly dispersive relaxor-like characteristics in the solid solution with 30-60 mol% Bi(Mg1/2Ti1/2)O 3, showing low-temperature coefficients of capacitance over a wide temperature range. The properties of Nb2O5-doped 0.85BT-0.15BMT ceramics were investigated to better understand the formation mechanism of core-shell structure, for further improving the temperature stability of the dielectric behavior.

AB - (1-x)BaTiO3-xBi(Mg1/2Ti1/2)O3 [(1-x)BT-xBMT] polycrystalline ceramics were obtained via solid-state processing techniques. The solubility limit for (1-x)BT-xBMT was determined to be about x=0.07. A systematic structural change from the ferroelectric tetragonal phase to pseudocubic phase was observed at about x≥0.05 at room temperature. Dielectric measurements revealed a gradual change from normal ferroelectric of pure BaTiO3 to highly dispersive relaxor-like characteristics in the solid solution with 30-60 mol% Bi(Mg1/2Ti1/2)O 3, showing low-temperature coefficients of capacitance over a wide temperature range. The properties of Nb2O5-doped 0.85BT-0.15BMT ceramics were investigated to better understand the formation mechanism of core-shell structure, for further improving the temperature stability of the dielectric behavior.

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