The Evaluation of Activation Parameters for Ferroelectric Switching in Soft PZT Ceramics

被引：9
|
作者：
Belov, A. Yu. [1 ,3 ]
Kreher, W. S. [1 ]
Nicolai, M. [2 ]
机构：
[1] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany
[2] Fraunhofer Inst Ceram Technol & Syst IKTS, Dresden, Germany
[3] RAS, Inst Crystallog, Moscow 117901, Russia
来源：
FERROELECTRICS | 2009年 / 391卷
关键词：
Ferroelectric ceramics; domains; modeling; DOMAIN-WALL MOTION;
D O I：
10.1080/00150190903001128
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dependence of the coercive field and remanent polarization on temperature was measured for a number of commercial soft PZT ceramics in the temperature range from -175 degrees C to 150 degrees C. It is found that for all ceramics investigated the curves E c vs. T have a peak in the low temperature region, typically between -100 degrees C and -50 degrees C. As temperature increases in the range from 0 degrees C to 150 degrees C the coercive field decreases nearly linearly. The temperature dependence of the coercive field in this region is explained by means of a micromechanical model based on an Arrhenius equation for the mobilility of domain walls and is used to calculate the activation energy for the domain wall movement in the field of short-range obstacles. Possible effects of microstructure on the activation energy are discussed.
引用
收藏
页码：42 / 50
页数：9
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