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

被引：154
|
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
收藏
页码：3412 / 3417
页数：6
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