Effects of doping Eu2O3 on the phase transformation and piezoelectric properties of Na0.5Bi0.5TiO3-based ceramics

被引：40
|
作者：
Lin, YH [1 ]
Zhao, SJ [1 ]
Cai, N [1 ]
Wu, JB [1 ]
Zhou, XS [1 ]
Nan, CW [1 ]
机构：
[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2003年 / 99卷 / 1-3期
关键词：
(Na0.5Bi0.5)((1-1.5x))EuxTiO3; phase transformation; dielectric constant;
D O I：
10.1016/S0921-5107(02)00465-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
(Na0.5Bi0.5)((1-1.5x))EuxTiO3 ceramics have been prepared by solid state reaction at 1120 degreesC for 2 h. Scanning electronic micrograph results indicate that the doped Eu2O3 can prohibit the grain growth. With increasing the doped amount of Eu2O3, the phase transformation (rhombohedral --> cubic) can be observed in the X-ray diffraction patterns, and correlated with a strong decrease in the piezoelectric properties d(33). The dielectric constants of poled and unpoled Na0.5Bi0.5TiO3 (NBT)-0 samples vary greatly as compared to NBT-5 sample due to the change of crystal structure. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：449 / 452
页数：4
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