THE LOW AND HIGH-FREQUENCY DIELECTRIC RELAXATIONS IN LEAD MAGNESIUM NIOBATE CERAMICS

被引：24

作者：

ELISSALDE, C ^{[1
]}

RAVEZ, J ^{[1
]}

GAUCHER, P ^{[1
]}

机构：

[1] THOMSON CSF,CENT RECH LAB,F-91404 ORSAY,FRANCE

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1993年 / 20卷 / 03期

关键词：

D O I：

10.1016/0921-5107(93)90247-K

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dielectric behaviour of lead magnesium niobate (PMN) was studied, and in particular its dependences on temperature and frequency. Two different relaxations were observed in PMN, one at high frequencies and one at low frequencies. The latter was detected only below T(m), the temperature at which epsilon(r)' is maximum at low frequency. Possible mechanisms for this behaviour are discussed. At T(m), the two relaxations are partially overlapped due to both a minimum in f(r) high frequency and a maximum in f(r) low frequency.

引用

页码：318 / 323

页数：6

共 12 条

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