First-principles study on the elastic property of hexagonal alunite

被引：20

作者：

Long, Jianping ^{[1
]}

Yang, Lijun ^{[1
]}

Wei, Xuesong ^{[1
]}

机构：

[1] Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, Chengdu 610059, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2012年 / 407卷 / 13期

关键词：

Alunite; DFT; Elastic property; Debye temperature; OPTICAL-PROPERTIES; AB-INITIO; JAROSITE; EXCHANGE; SUPERGROUP; STABILITY; MINERALS; CR2ALC; TA; NB;

D O I：

10.1016/j.physb.2012.04.004

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper, we have predicted the structural and elastic characteristics of KAl3(SO4)(2)(OH)(6) compounds through the method of density functional theory within the generalized gradient approximation (GGA) and Local Density Approximation (LDA) using the CASTEP package. The calculated equilibrium lattice parameters, the elastic property, anisotropy factor, Poison's ratio, Young's modulus, sound velocities and Debye temperature for KA(3)(SO4)(2)(OH)(6) have been calculated and compared with the available experimental data. From these results, this compound behaves as a brittle material and has a good thermal conductivity. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：2606 / 2609

页数：4

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