Temperature-Dependent Poling Behavior of Lead-free BZT-BCT Piezoelectrics

被引：79
作者：
Li, Binzhi [1 ]
Blendell, John E. [1 ]
Bowman, Keith J. [1 ]
机构：
[1] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47906 USA
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2011年 / 94卷 / 10期
基金：
美国国家科学基金会;
关键词：
ZIRCONATE-TITANATE; CERAMICS; UNIPOLAR; TEXTURE; FATIGUE; PZT;
D O I：
10.1111/j.1551-2916.2011.04758.x
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：
A high temperature poling method to improve the piezoelectric properties of the recently discovered lead-free system: Ba (Zr0.2Ti0.8)O-3-x(Ba0.7Ca0.3)TiO3 (BZT-BCT) has been developed. The effective d(33) value and strain level can be increased by 40% when samples are cooled under field through the Curie temperature. The ferroelastic domain contribution appears quite modest relative to the strain improvement. An internal bias field, induced by defect charge carriers accumulation at grain boundaries, may facilitate the intergranular interactions resulting in larger lattice strains.
引用
收藏
页码：3192 / 3194
页数：3
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