Far-from-equilibrium film growth on alloy surfaces: Ni and Al on NiAl(110)

Phys. Rev. B 84, 113414 – Published 27 September 2011
Yong Han, Dapeng Jing, Barış Ünal, P. A. Thiel, and J. W. Evans

Abstract

STM analysis reveals diverse nonequilibrium island structures formed by deposition of Ni and Al on NiAl(110) at around 300 K. Epitaxial growth in this complex alloy system is described by multisite lattice-gas modeling incorporating DFT energetics for adatoms both at adsorption sites and transition states. This approach accounts for multiple adsorption sites and diffusion paths, and accurately describes diffusion and detachment kinetics for a vast number of step-edge configurations. This is key for realistic description of island growth shapes, structure, and partial alloy ordering.

DOI: http://dx.doi.org/10.1103/PhysRevB.84.113414

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  • Received 24 April 2011
  • Revised 3 June 2011
  • Published 27 September 2011

©2011 American Physical Society

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Authors & Affiliations

Yong Han1,*, Dapeng Jing2,3, Barış Ünal3, P. A. Thiel2,3, and J. W. Evans3,4

  • 1Institute for Physical Research and Technology, Iowa State University, Ames, Iowa 50011, USA
  • 2Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
  • 3Ames Laboratory-USDOE, Iowa State University, Ames, Iowa 50011, USA
  • 4Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA

  • *octavian2009@gmail.com

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