Relaxor freezing and electric-field-induced ferroelectric transition in a lanthanum lead zirconate titanate ceramics

被引：17

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：

EUROPHYSICS LETTERS | 1999年 / 48卷 / 03期

关键词：

D O I：

10.1209/epl/i1999-00549-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Transition lines between various phases in the electric-field-temperature phase diagram of 9/65/35 lanthanum lead zirconate titanate ceramics were determined by measurements of the temperature and electric-field-dependent dielectric constant. Above the critical field (E-c) the de bias electric field induces a transition front the relaxor to the ferroelectric phase, while below E-c the system exhibits a freezing transition between the ergodic and nonergodic relaxor state. Transition lines are discussed in terms of the spherical random-bond-random-field model of relaxer ferroelectrics. Measurements in the quasistatic temperature regime confirm the prediction of the model that the nonlinear dielectric response shows a sharp peak at the freezing transition temperature.

引用

页码：326 / 331

页数：6

共 19 条

[1]

ARNDT H, 1988, FERROELECTRICS, V79, P145

[2] The onset of an electric field-induced ferroelectric-like phase in the perovskite Pb(Mg1/3Nb2/3)O-3 [J].