HIGH-FREQUENCY DIELECTRIC-RELAXATION IN LEAD MAGNESIUM NIOBATE CERAMICS

被引：23

作者：

ELISSALDE, C ^{[1
]}

RAVEZ, J ^{[1
]}

GAUCHER, P ^{[1
]}

机构：

[1] THOMSON CSF,CENT RECH LAB,F-91401 ORSAY,FRANCE

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1992年 / 13卷 / 04期

关键词：

D O I：

10.1016/0921-5107(92)90137-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dielectric measurements have been performed on Pb(Mg1/3Nb2/3)O3-ceramics in the frequency and temperature ranges 20-10(9) Hz and 180-400 K respectively. In addition to the well-known low frequency relaxation characteristic of a relaxor ferroelectric, a second characteristic has been found at high frequency, The latter exists not only in the ferroelectric phase but also in the paraelectric one. A minimum of the corresponding relaxation frequency occurs at the temperature of the maximum of epsilon(r)' measured at low frequency. This relaxation could be related to the inertia of Nb5+ correlation chains at high frequency.

引用

页码：327 / 333

页数：7

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