Electric-field induced phase transitions in 9/65/35 PLZT ceramics

被引：2

作者：

Bobnar, V ^{[1
]}

Kutnjak, Z ^{[1
]}

Pirc, R ^{[1
]}

Levstik, A ^{[1
]}

机构：

[1] Jozef Stefan Inst, Ljubljana 1001, Slovenia

来源：

FERROELECTRICS | 2000年 / 240卷 / 1-4期

关键词：

PLZT; relaxor; ferroelectric; phase transitions;

D O I：

10.1080/00150190008227973

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transition lines between various phases in the electric-field temperature phase diagram of 9/65/35 PLZT ceramics were determined by measurements of the temperature and electric-field-dependent dielectric constant. Above the critical field E-c the dc bias electric field induces relaxer to the ferroelectric (FE) phase transition. Transition lines were found to depend on the direction of the approach - the temperature or de bias field direction - to the FE phase. Also, a strong impact of the electric field on the stability of the FE phase with the increasing temperature was found. Below E-c the system exhibits a transition line between the ergodic and nonergodic relaxer state. The experimental results are compared with the results of a spherical random bond-random field model of relaxer ferroelectrics.

引用

页码：1479 / 1486

页数：8

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