Peer-Reviewed Journal Details
Mandatory Fields
Meere, MG,King, JR
2001
August
Quarterly Journal Of Mechanics And Applied Mathematics
The dissociative diffusion mechanism with charge effects I: One-dimensional in-diffusion
Published
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Optional Fields
SUBSTITUTIONAL-INTERSTITIAL DIFFUSION GALLIUM-ARSENIDE MODEL GAAS ZINC
54
469
500
in this paper we formulate a model of the dissociative mechanism for solid-state diffusion, which we analyse using asymptotic and numerical methods. The substitutional impurity is fixed to be singly negatively charged, while the interstitial impurity can have any charge and the vacancies any non-negative charge. The one-dimensional in-diffusion problem is considered and the impurity diffusion is shown to be very sensitive to the charge states of the interstitial impurities and vacancy defects. Some of the results are of broader interest with regard to the properties of systems of nonlinear diffusion equations, notably in terms of phenomena relating to a finite speed of propagation.
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