DIELECTRIC DIPOLAR-TYPE RELAXATION IN FERROELECTRIC CERAMICS WITH COMPOSITION (BA1-YSRY)TIO3

被引：5

作者：

KAZAOUI, S

RAVEZ, J

机构：

[1] Laboratoire de Chimie du Solide, associé a du C.N.R.S, University de Bordeaux, Talence

来源：

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1991年 / 125卷 / 02期

关键词：

D O I：

10.1002/pssa.2211250230

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dielectric relaxation is reported for ceramics with composition (Ba1-ySry) TiO3 (0 less-than-or-equal-to y less-than-or-equal-to 0.3) in the frequency and temperature ranges 10(6) to 10(9) Hz and 200 to 430 K, respectively. A minimum of the relaxation frequency f(r) occurs close to the phase transition temperature either T(orth.-tetr.) or T(C). The composition variation of f(r) at room temperature is thus correlated with the various transition temperatures which are directly connected with the composition. The relaxation is known to be of dipolar-type thanks to the use of the Devonshire's theory.

引用

页码：715 / 722

页数：8

共 10 条

[1]

Anderson P.W., 1960, FIZIKA DIELEKTRIKOV, P290

[2]

BRUESCH P, 1987, PHONONS THEORY EXPT, V3

[3] CRYSTAL STABILITY AND THE THEORY OF FERROELECTRICITY [J].