FERRIELECTRIC BEHAVIORS IN LI2GE7O15 CRYSTALS

被引：8

作者：

SAWADA, A ^{[1
]}

TOMATSU, M ^{[1
]}

机构：

[1] NAGOYA UNIV,FAC ENGN,SYNTHET CRYSTAL RES LAB,NAGOYA 400,JAPAN

来源：

FERROELECTRICS | 1992年 / 137卷 / 1-4期

关键词：

D O I：

10.1080/00150199208015960

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Temperature dependence of spontaneous polarization P(s)(T) in ferroelectric Li2Ge7O15 crystals has been measured in a wide range of temperature from 300 K to 15 K by a pyroelectric charge method. Temperature dependence of dielectric constant epsilon (T) has precisely been measured in the paraelectric phase. It is shown that the experimental results can be explained by a ferrielectric model, in which two kinds of nonequivalent antiparallel sublattice polarizations are induced by a soft phonon mode having negligibly small oscillator strength.

引用

页码：297 / 302

页数：6

共 7 条

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