QUANTITATIVE-EVALUATION OF EXTRINSIC CONTRIBUTION TO PIEZOELECTRIC COEFFICIENT D(33) IN FERROELECTRIC PZT CERAMICS

被引：38

作者：

LI, SP ^{[1
]}

BHALLA, AS ^{[1
]}

NEWNHAM, RE ^{[1
]}

CROSS, LE ^{[1
]}

机构：

[1] PENN STATE UNIV,MAT RES LAB,UNIV PK,PA 16802

来源：

MATERIALS LETTERS | 1993年 / 17卷 / 1-2期

关键词：

D O I：

10.1016/0167-577X(93)90141-J

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The contribution of 90-degrees domain wall motion to the piezoelectric coefficient d33 in ferroelectric PZT ceramics has been evaluated quantitatively by a simple model. The microstructures of PZT ceramics have also been considered through the evaluation process. In order to avoid some formidable and somewhat ambiguous calculations involved and also in order to offer a clear physical Picture of the domain contribution to the piezoelectric coefficient d33 in ferroelectric ceramics, we have introduced a new concept of the effective number of domain walls in the quantitative evaluation process which reflects the magnitude of domain wall density in ceramics. The obtained calculation result, DELTAd33 = 219.4 X 10(-12) m/V, supports the measured data and also is inherently plausible in terms of the contribution of domain wall motion to the electromechanical properties of ferroelectric ceramics.

引用

页码：21 / 26

页数：6

共 21 条

[1] FORCE-CONSTANT AND EFFECTIVE MASS OF 90-DEGREES DOMAIN-WALLS IN FERROELECTRIC CERAMICS [J].