First-principles calculations of elastic properties of Cu3Sn superstructure

被引：38

作者：

Chen, Jiunn ^{[1
]}

Lai, Yi-Shao ^{[1
]}

Ren, Chung-Yuan ^{[2
]}

Huang, Di-Jing ^{[3
]}

机构：

[1] Adv Semicond Engn Inc, Cent Labs, Kaohsiung 81170, Taiwan

[2] Natl Kaohsiung Normal Univ, Dept Phys, Kaohsiung 82444, Taiwan

[3] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 08期

关键词：

D O I：

10.1063/1.2884685

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the elastic properties of Cu3Sn superstructure based on first-principles calculations. Polycrystalline Young's modulus and Poisson's ratio are deduced from the calculated elastic stiffness. The calculations of electronic structures with the principal strains along different directions unravel the electronic nature of anisotropic elasticity of Cu3Sn. Weak Sn-Cu bonding in Cu3Sn suggests that Sn atoms are the dominant diffusion species, revealing the mechanism of vacancy formation within the Cu3Sn superstructure. (C) 2008 American Institute of Physics.

引用

页数：4

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