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无机材料学报

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逆压电效应的压电常数和压电陶瓷微位移驱动器

陈大任; 李国荣; 殷庆瑞   

  1. 中国科学院上海硅酸盐研究所; 上海 200050
  • 收稿日期:1997-06-02 修回日期:1997-07-02 出版日期:1997-12-20 网络出版日期:1997-12-20

Piezoelectric Constants Measured from Converse Piezoelectric Effect and Piezoelectric Ceramic Actuators

CHEN Daren; LI Guorong; YIN Qingrui   

  1. Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China
  • Received:1997-06-02 Revised:1997-07-02 Published:1997-12-20 Online:1997-12-20

PDF (PC)

1754

被引次数

102

摘要： 本文介绍了由过压电效应的应变-电场曲线测得弱场和强场下的压电常数d33、d31．测量发现S～E曲线上呈现应变和压电系数突增的阈值场强Eb，用铁电陶瓷固有的90°畴转向对应变的贡献进行了分析和讨论．该方法与以往常用的正压电效应的压电常数测试相比，方便、简单，尤其对过压电效应的压电微位移驱动器应用更具有实际意义．

关键词: 压电常数, 逆压电效应, 压电陶瓷微位移器

Abstract: The piezoelectric constants d33 and d31 under weak and stronger field were measured from strain S vs electric field E curves
for the converse piezoelectric effect. It was shown that on the curves there is a critical field Eb from which strains and d33, d31 were obviously increased, and the result was discussed in the view of reorientation of 90° domain
intrinsically existed in piezoelectric ceramics. This method of measuring d33, d31 is simple and convenient, as well as more
practical, especially for piezoelectric ceramic actuator, as compared with that usually obtained them from positive piezoelectric effect.

Key words: piezoelectric constant, converse piezoelectric effect, piezoelectric ceramics actuator