Two dielectric contributions due to domain/cluster structure in the ferroelectrics with diffused phase transitions

被引：24

作者：

Bovtoun, VP

Leshchenko, MA

机构：

[1] Microelectronics Department, Kiev Polytechnic Institute, Kiev, 252056

来源：

FERROELECTRICS | 1997年 / 190卷 / 1-4期

关键词：

LEAD MAGNONIOBATE; DISPERSION;

D O I：

10.1080/00150199708014114

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The main dielectric contributions and the structure of dielectric spectrum of the ferroelectrics with diffused phase transitions are considered on the base of PbMg1/3Nb2/3O3 (PMN) crystals investigation. Dielectric spectra of the displacive, order-disorder and diffused phase transitions ferroelectrics ate compared. Dielectric properties of the PMN are nontypical for displacive-type ferroelectrics and aren't defined mainly by soft phonon mode. The main polarization mechanisms are caused by the thermoactivated dynamics of the metastable polar phase clusters and polar-nonpolar phase boundaries.

引用

页码：185 / 190

页数：6