Structure, Dielectric Properties and Temperature Stability of BaTiO3-Bi(Mg1/2Ti1/2)O3 Perovskite Solid Solutions

被引：158

作者：

Xiong, Bo ^{[1
]}

Hao, Hua ^{[1
]}

Zhang, Shujun ^{[2
]}

Liu, Hanxing ^{[1
]}

Cao, Minghe ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China

[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2011年 / 94卷 / 10期

关键词：

MICROSTRUCTURE; CERAMICS; RELAXATION; BEHAVIOR;

D O I：

10.1111/j.1551-2916.2011.04519.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

(1-x)BaTiO3-xBi(Mg1/2Ti1/2)O-3 [(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.

引用

页码：3412 / 3417

页数：6

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