DIELECTRIC RELAXATION IN RELAXOR FERROELECTRICS

被引：309

作者：

Bokov, Alexei A. ^{[1
,2
]}

Ye, Zuo-Guang ^{[1
,2
,3
]}

机构：

[1] Simon Fraser Univ, Dept Chem, 8888 Univ Dr, Burnaby, BC V5A 1S6, Canada

[2] Simon Fraser Univ, LABS 4D, Burnaby, BC V5A 1S6, Canada

[3] Xi An Jiao Tong Univ, Ctr Dielect Res, Key Lab Minist Educ & Int, Elect Mat Res Lab, Xian 710049, Shaanxi, Peoples R China

来源：

JOURNAL OF ADVANCED DIELECTRICS | 2012年 / 2卷 / 02期

关键词：

Relaxor ferroelectrics; dielectric spectroscopy; stretched exponential relaxation; Vogel-Fulcher law;

D O I：

10.1142/S2010135X1241010X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this review the dielectric properties of relaxor ferroelectrics are discussed and compared with the properties of normal dielectrics and ferroelectrics. We try to draw a general picture of dielectric relaxation starting from a textbook review of the underlying concepts and pay attention to common behavior of relaxors rather than to the features observed in specific materials. We hope that this general approach is beneficial to those physicists, chemists, material scientists and device engineers who deal with relaxors. Based on the analysis of dielectric properties, a comprehensive definition of relaxors is proposed: relaxors are defined as ferroelectrics in which the maximum in the temperature dependence of static susceptibility occurs within the temperature range of dielectric relaxation, but does not coincide with the temperature of singularity of relaxation time or soft mode frequency.

引用

页数：24

共 79 条

[1] RELATIONSHIP BETWEEN THE TIME-DOMAIN KOHLRAUSCH-WILLIAMS-WATTS AND FREQUENCY-DOMAIN HAVRILIAK-NEGAMI RELAXATION FUNCTIONS [J].