An extensive Monte Carlo study was made of tracer correlation factors in simple cubic, bcc and fcc binary random alloys. Contrary to the findings of much of the earlier Monte Carlo work, where vacancy jump sequences were much too short, it was found that the Manning (1968, 1971) diffusion kinetics formalism generally provided only a fairly rough approximation for the tracer correlation factors except when the exchange frequency ratio was close to unity. It was found that the Holdsworth and Elliott (1986) kinetics formalism performed much better than Manning over a wide range of exchange frequency ratios and, for the slow diffuser, was almost exact. The kinetics formalism of Moleko, Allnatt and Allnatt (1989) performed even better, with essentially exact agreement for the slow diffuser, and excellent agreement for the faster diffuser except for extreme values of the exchange frequency ratio.

Tracer Correlation Factors in the Random Alloy. I.V.Belova, G.E.Murch: Philosophical Magazine A, 2000, 80[7], 1469-79