FREQUENCY-DEPENDENCE OF THE PIEZOELECTRIC D31 COEFFICIENT AS A FUNCTION OF CERAMIC TETRAGONALITY

被引：9

作者：

VICENTE, JM ^{[1
]}

JIMENEZ, B ^{[1
]}

机构：

[1] ITTO CIENCIA MAT, SEDE A, E-28006 MADRID, SPAIN

来源：

FERROELECTRICS | 1992年 / 134卷 / 1-4期

关键词：

D O I：

10.1080/00150199208015581

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements have been made of the complex piezoelectric coefficient (d31), by a quasistatic method, so as to determine its real and imaginary components as a function of frequency (f = 10(-3) - 10(3) Hz) and temperature. Results obtained with Ca-modified lead titanate and lead lanthanum titanate-ziconate ceramic samples reveal the existence of relaxations at a very low frequency for the former and at frequencies of tens of hertzs for the latter. Tetragonal distortion and polar microregions could be considered as the respective causes of such relaxation processes.

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页码：157 / 162

页数：6

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