First-principles study on elastic properties of AlN

被引：5
|
作者：
Tan, Xin [1 ,2 ]
Xin, Zhenyang [2 ]
Liu, Xuejie [2 ]
Mu, Qingge [2 ]
机构：
[1] Northeastern Univ, Sch Mech Engn & Automat, Shenyang 110004, Peoples R China
[2] Inner Mongolia Univ Sci & Technol, Sch Mech Engn & Automat, Baotou 014010, Peoples R China
来源：
ADVANCES IN TEXTILE ENGINEERING AND MATERIALS III, PTS 1 AND 2 | 2013年 / 821-822卷
关键词：
AlN; elastic properties; First-principles; GAN; ZINCBLENDE; AIN; INN;
D O I：
10.4028/www.scientific.net/AMR.821-822.841
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Structural and elastic properties of AlN are investigated by using First-principles. Both of wurtzite and zinc-blende structures are investigated, respectively. The bulk moduli of the wurtzite structure and zinc blende AlN are 194.2GPa and 187GPa, which obtained by the elastic stiffness constants respectively. Shear moduli are 136GPa and 124GPa. Young's moduli are 331GPa and 305GPa. Poisson's ratio and Pugh criterion suggests that both of them are brittle material. The brittleness of wurtzite AlN is higher than that of zinc-blende AlN. The elastic anisotropy of the bulk moduli and shear moduli were discussed. Three-dimensional anisotropic of the young's modulus were analyzed.
引用
收藏
页码：841 / +
页数：2
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