Non-Random Interaction of Vacancies with Atoms during Interdiffusion and Ionic Conductivity in Materials
The non-random interaction of vacancies with atoms during interdiffusion and ionic conductivity is referred to as the vacancy-wind effect. This effect, first discovered by the late Dr John Manning, is a subtle phenomenon arising from the non-random distribution of vacancies with respect to a given moving atom within a net flux of vacancies. Recently, a good deal of progress has been made in determining accurate expressions for vacancy-wind factors in binary and ternary alloys, and in mixed cation ionic systems. The present paper provides an overview of these recent findings and puts them into a broader and historical context.
Prof. Yong Ho Sohn, C. Campbell, D. Lewis and Afina Lupulescu
I. V. Belova and G. E. Murch, "Non-Random Interaction of Vacancies with Atoms during Interdiffusion and Ionic Conductivity in Materials", Defect and Diffusion Forum, Vol. 266, pp. 119-130, 2007