Collective and tracer diffusion kinetics in the ternary random alloy

Abstract

In this study, collective and tracer diffusion kinetics is addressed for the ternaryrandom alloy. A formal solution from the self-consistent theory ofMoleko et al (Moleko L K, Allnatt A R and Allnatt E L 1989 Phil.Mag. A 59 141) is derived for collective diffusion andcompared with the corresponding solution for the binary random alloy.Tracer diffusion in the ternary alloy is treated from the perspectiveof a special case of the quaternary random alloy. Results from MonteCarlo calculations for tracer and collective correlation factors (forthe bcc ternary random alloy) are found to be in excellent agreementwith this self-consistent theory but in only semi-quantitativeagreement with the earlier theory of Manning (Manning J R 1971Phys. Rev. B 4 1111).