The problem of the enhancement of solvent diffusivity by the addition of very small amounts of solute was addressed. The random alloy model was used, in the dilute limit. No Monte Carlo calculations were available for evaluating the available theoretical treatments. Very high-precision results on solvent correlation factors, as obtained from Monte Carlo calculations by averaging over 6 x 107 atoms during very long runs (2000 jumps per atom) were reported here. The results were expressed in terms of the usual solvent enhancement factors. There was found to be good agreement with the theory of Holdsworth and Elliott, and excellent agreement with the theory of Moleko et al., but not with other available theories.

Solvent Diffusion Kinetics in the Dilute Random Alloy. I.V.Belova, G.E.Murch: Philosophical Magazine, 2003, 83[3], 393-9