纤锌矿晶体结构
材料科学
模数
脆性
各向异性
剪切模量
弹性模量
剪切(地质)
复合材料
泊松比
刚度
锌
泊松分布
冶金
数学
光学
物理
统计
量子力学
作者
Xin Tan,Zhen Yang Xin,Xue Jie Liu,Qing Ge Mu
出处
期刊:Advanced Materials Research
日期:2013-09-18
卷期号:821-822: 841-844
被引量:2
标识
DOI:10.4028/www.scientific.net/amr.821-822.841
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.
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