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Journal of the Southern African Institute of Mining and Metallurgy

On-line version ISSN 2411-9717
Print version ISSN 0038-223X

Abstract

HARRIS, R.A.; TERBLANS, J.J.; SWART, H.C.  and  VAN DER LINGEN, E.. Monte Carlo simulation of Pt-Al thin film diffusion. J. S. Afr. Inst. Min. Metall. [online]. 2011, vol.111, n.3, pp.187-191. ISSN 2411-9717.

In this study Pt-Al thin films were prepared via electron beam physical vapour deposition (EB-PVD) with an atomic concentration ratio of Pt25:Al75. These films were heat treated at temperatures ranging from 150°C to 650°C for annealing times from 4 to 60 minutes. The resulting microstructure of these thin films were obtained via secondary electron imaging used in conjunction with depth profiling with the aid of scanning auger microscopy (PHI 700). Elemental maps of the micrographs were obtained. Simulations, based on a chemical potential Monte Carlo method1, were run for various interaction parameters. From these simulations theoretical depth-profiles and proposed microstructures were obtained. These were compared to the experimentally measured depth profiles and elemental maps.

Keywords : Monte Carlo; chemical potential; depth profile; Pt-Al thin films.

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