中国物理B ›› 2015, Vol. 24 ›› Issue (7): 76501-076501.doi: 10.1088/1674-1056/24/7/076501

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Effects of energy dissipation on anisotropic materials

张凌云   

  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2015-01-06 修回日期:2015-04-01 出版日期:2015-07-05 发布日期:2015-07-05

Effects of energy dissipation on anisotropic materials

Zhang Ling-Yun (张凌云)   

  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2015-01-06 Revised:2015-04-01 Online:2015-07-05 Published:2015-07-05
  • Contact: Zhang Ling-Yun E-mail:lyzhang@iphy.ac.cn

摘要:

A model and its simulations are presented to describe the effects of energy dissipation on anisotropic systems. When the current electromigration is constant, energy dissipation depends on lattice constants, resistivity, and the angles along the longitudinal and transversal directions. It is shown that an orientation variation of the grain can significantly influence the energy dissipation for some anisotropic materials. Based on calculations for the grain model, the mechanism of grain growth and microstructure evolution under electromigration is explained. Theoretical implications about material selection and reliability are derived.

关键词: electromigration, energy dissipation

Abstract:

A model and its simulations are presented to describe the effects of energy dissipation on anisotropic systems. When the current electromigration is constant, energy dissipation depends on lattice constants, resistivity, and the angles along the longitudinal and transversal directions. It is shown that an orientation variation of the grain can significantly influence the energy dissipation for some anisotropic materials. Based on calculations for the grain model, the mechanism of grain growth and microstructure evolution under electromigration is explained. Theoretical implications about material selection and reliability are derived.

Key words: electromigration, energy dissipation

中图分类号:  (Work functions)

  • 65.40.gh
81.05.Bx (Metals, semimetals, and alloys) 66.30.Qa (Electromigration) 68.65.Ac (Multilayers)