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Monte Carlo Study Of The Vacancy Mechanism In Dilute Fcc Binary Alloys

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  • A. HASNAOUI

    (U.F.R. de Physique des Particules et des Phénomènes de Transport, Faculté des Science Aïn Chock, Université HASSAN 11, B.P. 3566, Maârif, Casablanca, Maroc)

Abstract

The vacancy mechanism is simulated by means of Monte Carlo (MC) method. In this model, the impurity diffusion occurs by migration of substitutional atomsBvia the exchange with vacancies whose frequencies near a solute atom differ from a free vacancy. Whenever a defect leaves the lattice, periodic boundary conditions are made to bring it into the lattice. The solute concentration profiles are given using a technique developed by Murch which has been shown to be equivalent to a finite source. The fit of these profiles allows the comparison between our results and analytical solutions. The parameters extracted from a Gaussian function fit which agrees well with numerical profiles are in very good quantitative agreement with theoretical predictions.

Suggested Citation

  • A. Hasnaoui, 2000. "Monte Carlo Study Of The Vacancy Mechanism In Dilute Fcc Binary Alloys," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 11(07), pages 1417-1423.
    • Handle: RePEc:wsi:ijmpcx:v:11:y:2000:i:07:n:s0129183100001243
    DOI: 10.1142/S0129183100001243
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