ELECTRIC FIELD DEPENDENCE OF SPECIFIC HEAT OF A DISPLACIVE FERROELECTRIC CRYSTAL.

被引：0

作者：

Naithani, U.C. ^{[1
]}

Baluni, G.N. ^{[1
]}

机构：

[1] BGR Constituent Coll, Theoretical, Physics Div, Pauri, India, BGR Constituent Coll, Theoretical Physics Div, Pauri, India

来源：

Indian Journal of Pure and Applied Physics | 1985年 / 23卷 / 05期

关键词：

ELECTRIC FIELD EFFECTS;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The electric field dependence of the specific heat of an anharmonic pure ferroelectric crystal is calculated in its paraelectric phase from the Silverman-Joseph-Hamiltonian augmented with fourth-order phonon coordinates using double time Green's functions. The soft-mode contribution to the specific heat is described by appropriate Einstein terms. The specific heat decreases with increasing external electric field, in agreement with the experimental results of WN Lawless. Soft mode is responsible for this effect.

引用

页码：261 / 266

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