Frequency dependence of ferroelectric fatigue in PLZT ceramics

被引：22
|
作者：
Zhang, NX [1 ]
Li, LT [1 ]
Gui, ZL [1 ]
机构：
[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2001年 / 21卷 / 05期
关键词：
fatigue; ferroelectric domains; ferroelectric properties; PLZT;
D O I：
10.1016/S0955-2219(00)00248-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：
Electric induced fatigue in ferroelectric PLZT ceramics was investigated. The fatigue occurred with the increasing of accumulative switching cycles in samples. The polarization decreased with the development of fatigue. At the same time, the piezoelectric properties also degraded during the process of ferroelectric fatigue. The different fatigue behaviors were observed in PLZT ceramics when processed under different frequencies of applied electric field, despite the same magnitude. The samples can be easily fatigued at low frequency while hardly fatigued at high frequency. The phenomenon was explained according to the dynamic behavior of ferroelectric domains during their response to the applied electric field. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：677 / 681
页数：5
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