A new equation was proposed for calculating the hopping diffusion coefficient of a cation vacancy in mixed alkali-halide crystals having a common cation, such as KCl-KBr. It was based upon the concepts of probability theory, and gave good agreement with numerical calculations performed using the Monte Carlo method.

Description of the Migration of a Cation Vacancy in Mixed Alkali-Halide Crystals Having a Common Cation. L.G.Gorbich, A.N.Varaksin: Physics of the Solid State, 1999, 41[3], 386-7