Characterization of Dielectric Relaxation of Relaxor Ferroelectrics

被引：5

作者：

Cao, Wan Qiang ^{[1
]}

Chen, Wei

Shang, Yu Li

Shu, Ming Fei

机构：

[1] Hubei Univ, Key Lab Green Preparat & Applicat Funct Mat, Minist Educ, Wuhan 430062, Peoples R China

来源：

FERROELECTRICS LETTERS SECTION | 2012年 / 39卷 / 4-6期

关键词：

Ferroelectrics; ceramics; dielectrics; GLASS-FORMING LIQUIDS; FRAGILITY; TEMPERATURE; PEROVSKITES; TRANSITION;

D O I：

10.1080/07315171.2012.738594

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The concept relaxativity is proposed to describe the degree of dielectric relaxor in relaxor ferroelectrics, like the fragility in supercooled liquid in describing glass forming ability during vitrification process. The calculated results of Pb(Mg1/3Nb2/3)O3-PbTiO3 relaxors and BaTiO3-BaZrO3 relaxors exhibit good coincidences with the intervals between their dielectric peak temperatures. The larger relaxativity is corresponding to larger configurational entropy and smaller spatial correlation length, or stronger local interactions for a relaxor.

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页码：71 / 75

页数：5

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