An extensive Monte Carlo study was made of the tracer correlation factors in simple-cubic, body-centered cubic and face-centered cubic binary random alloys. It was found that Manning’s diffusion kinetics formalism generally provided only a rough approximation to the tracer correlation factors; except when the exchange frequency ratio was close to unity. This was contrary to the conclusions of most earlier Monte Carlo studies where the vacancy jump sequences had been much too short. The Holdsworth-Elliott kinetics formalism performed much better than did Manning’s over a wide range of exchange frequency ratios. It was almost exact for the slow diffuser. The Moleko-Allnatt kinetics formalism performed even better; furnishing an essentially exact agreement for the slow diffuser, and excellent agreement for the fast 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