The self-diffusion coefficient of crystalline solids as a function of density and temperature could be derived from thermodynamics concepts and an earlier elastic thermodynamic point defect model of Varotsos and Alexopoulos (1977, 1978). Compensation laws ruling self-diffusion parameters in carbon-subgroup crystals obtained from theoretical calculations were also predicted.

Self-Diffusivity as a Function of Density and Temperature in Crystalline Solids and Compensating Rules for Self-Diffusion Parameters in Carbon Subgroup Crystals. Papathanassiou, A.N., Sakellis, I., Grammatikakis, J.: Applied Physics Letters, 2010, 97[4], 041913