DEFORMABLE SHELL MODEL CALCULATION OF INFRARED ABSORPTION FREQUENCIES OF IONIC CRYSTALS

被引：22

作者：

ROY, D

BASU, AN

SENGUPTA, S

机构：

[1] Physics Department, New Alipore College, Calcutta

[2] Physics Department, Jadavpur University, Calcutta

[3] Physics Department, Maulana Azad College, Calcutta

来源：

PHYSICA STATUS SOLIDI | 1969年 / 35卷 / 01期

关键词：

D O I：

10.1002/pssb.19690350152

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The deformable shell model which includes many‐body effects and accounts for the breakdown of Cauchy relation is extended to the case of the CsCl structure. The TO mode frequencies for q = 0 are calculated for eight ionic crystals of both NaCl and CsCl structures. For comparison, the shell model values are also calculated. The results are compared with the infrared absorption frequencies. It is found that the deformable shell model gives better agreement than the shell model. The result is particularly striking for crystals showing a large Cauchy relation breakdown. Copyright © 1969 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：499 / &

共 30 条

[1] PRESSURE DERIVATIVES OF ELASTIC CONSTANTS OF NACL AND KCL AT 295 DEGREES K AND 195 DEGREES K [J].