Ferroelectric polarization fatigue in PZT-based RAINBOWs and bulk ceramics

被引：0
|
作者：
Dausch, DE
机构：
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1997年 / 80卷 / 09期
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D O I：
暂无
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：
The ferroelectric fatigue behavior of high-displacement reduced and internally biased oxide wafer (RAINBOW) actuators was investigated and compared with that of conventional bulk ceramics. Piezoelectric lead zirconate titanates (PZT-5H and PZT-5A) as well as electrostrictive lead lanthanum zirconate titanate (PLZT 9/65/35) materials were studied. Piezoelectric bulk ceramics experienced a 25% decrease in remanent polarization over 10(8) switching cycles, whereas RAINBOW polarization degraded by 33%-53%. Bulk ceramic and RAINBOW electrostrictors both fatigued only 8%. Bulk ceramics fatigued as a result of reorientation of the polar axes away from the electric-field direction, RAINBOW fatigue was believed to have been caused by degradation at the interface between the oxide and chemically reduced layers.
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页码：2355 / 2360
页数：6
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