Acoustic emission in lead lanthanum zirconate titanate PLZT (18/40/60) ceramics with small electrostriction

被引：0
|
作者：
Aburatani, H [1 ]
Witham, JP [1 ]
Uchino, K [1 ]
机构：
[1] Penn State Univ, Int Ctr Actuators & Transducers, Intercoll Mat Res Lab, University Pk, PA 16802 USA
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1997年 / 36卷 / 11期
关键词：
acoustic emission (AE); dielectric material; electrostrictive; Kaiser effect; PLZT ceramics; reliability;
D O I：
10.1143/JJAP.36.6829
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Electric field induced acoustic emission (AE) was studied in electrostrictive lead lanthanum zirconate titanate (PLZT) (18/40/60) ceramics, which has a field induced strain of 0.02% at an electric Geld of 20kV/cm. A field induced AE was constantly observed for an applied field greater than 10 kV/cm. Furthermore: the AE was present even when the applied field was being decreased. The critical electric field above which AE was generated was determined. The total AE event count simply increased with time under constant electric fields, and the AE event rate increased with increasing the applied electric field.
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页码：6829 / 6831
页数：3
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