Calculation of Elastic Constants of Ag/Pd Superlattice Thin Films by Molecular Dynamics with Many-Body Potentials
GAO Ning, LAI Wen-Sheng
Advanced Materials Laboratory, Department of Materials Science and Engineering, Tsinghua University,
Beijing 100084
Calculation of Elastic Constants of Ag/Pd Superlattice Thin Films by Molecular Dynamics with Many-Body Potentials
GAO Ning;LAI Wen-Sheng
Advanced Materials Laboratory, Department of Materials Science and Engineering, Tsinghua University,
Beijing 100084
关键词 ：
07.05.Tp ,
62.20.Dc ,
68.60.-p
Abstract ： The calculation of elastic constants of Ag/Pd superlattice thin films by molecular dynamics simulations with many-body potentials is presented. It reveals that the elastic constants C11 and C55 increase with decreasing modulation wavelength Λ of the films, which is consistent with experiments. However, the change of C11 and C55 with Λ is found to be around the values determined by a rule of mixture using bulk elastic constants of metals. No supermodulus effect is observed and it is due to cancellation between enhanced and reduced contributions to elastic constants from Ag and Pd layers subjected to compressive and tensile strains, respectively.
Key words ：
07.05.Tp
62.20.Dc
68.60.-p
出版日期: 2006-11-01
引用本文:
GAO Ning;LAI Wen-Sheng. Calculation of Elastic Constants of Ag/Pd Superlattice Thin Films by Molecular Dynamics with Many-Body Potentials[J]. 中国物理快报, 2006, 23(11): 2913-2916.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2006/V23/I11/2913
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