Elastic and thermodynamic properties of the zinc-blende structure LiZnN under pressure

被引:13
作者
Chang, Jing [1 ]
Chen, Xiang-Rong [1 ,2 ]
Cheng, Yan [1 ]
Zhu, Jun [1 ]
机构
[1] Sichuan Univ, Sch Phys Sci & Technol, Chengdu 610064, Peoples R China
[2] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
基金
中国国家自然科学基金;
关键词
ab initio calculations; Elastic properties; Thermodynamic properties; Alloy; OPTICAL BAND-GAP; TETRAHEDRAL SEMICONDUCTOR LIZNN; ELECTRONIC-STRUCTURE; AB-INITIO; LIMGX X; CONSTANTS; CRYSTALS; GROWTH; SOLIDS; MGO;
D O I
10.1016/j.physb.2009.09.059
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The elastic and thermodynamic properties of the cubic zinc-blende (ZB) structure LiZnN under high pressure and temperature are investigated by using ab initio plane-wave pseudopotential density functional theory method within the generalized gradient approximation (GGA). The pressure and temperature dependences of the elastic modulus of the filled tetrahedral compounds LiZnN are presented. The calculated results are in excellent agreement with the available experimental data and other theoretical results. Finally, the thermodynamic properties of the zinc-blende structure LiZnN are predicted by using the quasi-harmonic Debye model., the heat capacity C-v, the thermal expansion alpha and the Gruneisen parameter gamma on pressure P and temperature T are also obtained successfully in the ranges of 0-100 GPa and 0-2000 K. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:529 / 533
页数:5
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