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Molecular Dynamics Studies of Thin-Films of Sn On Cu

Published online by Cambridge University Press:  10 February 2011

R. Ravelo ,
J. Aguilar  and
M. I. Baskes
R. Ravelo
Affiliation:
Department of Physics and Materials Research Institute, University of Texas, El Paso, TX, 79968
J. Aguilar
Affiliation:
Materials Research Institute, University of Texas, El Paso, TX 79968
M. I. Baskes
Affiliation:
Materials Reliability Department, Sandia National Laboratories, Livermore, CA, 94551
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Abstract

Using Molecular Dynamics, the evolution dynamics of Sn on the (111) and (100) surfaces of Cu have been investigated as a function of coverage and temperature. The interaction potentials are described by modified embedded atom method (MEAM) potentials. The calculated diffusion activation energies of Cu in Sn and Sn in Cu agree reasonably well with experimental values. We find that the structure of the overlayer depends on the morphology of the substrate and remains stable up to temperatures of the order of 70% of the melting temperature of the substrate at which diffusion of Sn into the substrate and Cu atoms onto the overlayer is observed.

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References

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