Temperature dependence of elastic constants for ionic solids

被引：4

作者：

Sarkar, Bimal Kumar ^{[1
]}

Verma, Ajay Singh ^{[2
]}

Gupta, Rajesh Chandra ^{[3
]}

机构：

[1] VIT Univ, Dept Phys, Vellore 632014, Tamil Nadu, India

[2] Panjab Univ, Dept Phys, Chandigarh 160014, India

[3] Inst Engn & Management, Dept Phys, Mathura 281406, India

来源：

PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 21期

关键词：

Elastic constants; Murnaghan model; Tallon model; Anderson-Gruneisen parameter; THERMAL-EXPANSION COEFFICIENT; BULK MODULUS; ALKALI-HALIDES; MINERALS; EQUATION; CRYSTALS; STATE;

D O I：

10.1016/j.physb.2009.07.173

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper the thermal variation of volume for NaCl, KCl, MgO and CaO has been investigated on the basis of Anderson model. We have evaluated the values of elastic constants C-11, C-44 and K-T at different temperature on the basis of Murnaghan and Tallon models. Tallon's model with second approximation presents slightly better agreement with experimental results which shows that the Anderson-Gruneisen parameter is directly proportional to the volume ratio. Tallon's model can be used to evaluate the values of elastic constants for solids at different temperatures. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：4106 / 4110

页数：5

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