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Computer Simulations of Two-Dimensional Sn-Cu Alloys on (100) and (111) Cu Surfaces

Published online by Cambridge University Press:  10 February 2011

Jose F. Aguilar ,
R. Ravelo  and
M. Baskes
Jose F. Aguilar
Affiliation:
Department of Physics and Materials Research Institute, University of Texas, El Paso, TX 79968
R. Ravelo
Affiliation:
Department of Physics and Materials Research Institute, University of Texas, El Paso, TX 79968
M. Baskes
Affiliation:
Sandia National Labs., Livermore, CA
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Abstract

We have performed calculations of Sn deposition on Cu(111) and Cu(100) surfaces. The atomic interactions are described by modified embedded atom method (MEAM) potentials. This is a modification of the embedded atom method (EAM) to include higher moments in the electron density. We find the at low coverages Sn deposited on Cu(111) leads to the formation of a two-dimensional (2D) alloy phase with a p (√3 × √3)-R 30° structure which is stable up to temperatures of 900K. These results are in agreement with ion-scattering experiments of thin films of Sn on Cu(111). For deposition of Sn on Cu(100), a 0.25 monolayer (ML) coverage results in the formation of a stable 2D alloy phase with a p(2 × 2) structure. This result is also in agreement with LEED measurements.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 570: Symposium V – Epitaxial Growth , 1999 , 251
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

[1] Overbury, S.H., and Ku, Yi-sha, Phys. Rev. B 46, 7868 (1992).Google Scholar
[2] Erlewein, J. and Hofrnann, S., Surf. Sci. 68, 71 (1977).Google Scholar
[3] Viljoen, E.C., Plessis, J. du, Swart, H.C., and Wyk, G.N. van, Surf. Sci. 342, 1 (1995)Google Scholar
[4] Plessis, J. du and Viljoen, E.C., Appl. Surf. Sci. 100/101, 222 (1996).Google Scholar
[5] Contini, G., Castro, V. Di, Motta, N. and Sgarlata, A., Surf. Sci. 405, L509 (1998).Google Scholar
[6] Abell, F., Cohen, C., Davies, J.A., Moulin, J. and Schmaus, D., Appl. Surf. Sci. 44, 17 (1990).Google Scholar
[7] Baskes, M.I., Phys. Rev. B 46, 2727 (1992).Google Scholar
[8] Ravelo, R., Aguilar, J. and Baskes, M.I., in Microscopic Simulation of Interfacial Phenomena in Solids and Liquids, edited by Bristowe, P., Phillpot, S., Smith, J. and Stroud, D., (Mater. Res. Soc. Proc. 492, Pittsburgh. PA 1998).Google Scholar
[9] Ravelo, R. and Baskes, M., Phys. Rev. Lett. 79, 2482 (1997).Google Scholar
[10] Ravelo, R. and Baskes, M. in Thermodynamics and Kinetics of Phase Transformations, edited by Im, J.S., Greer, A.L., Park, B. and Stephenson, G.B., (Mater. Res. Soc. Proc. 398, Pittsburgh, PA 1996), p. 287.Google Scholar
[11] Baskes, M.I., Angelo, J.E., and Bisson, C.L., Modeling Simul. Mater. Sci. Eng. 2, 505 (1994). For a more complete description of the effect of MEAM potential parameters on properties of solids see M.I. Baskes, Mat. Chem. Phys. 50, 152 (1997).Google Scholar