Analysis of Melting for Alkali Halides Based on Diffusional Force Theory

The theory for melting based on the concept of diffusional force is used for studying the melting of alkali halides. Values of the thermal expansivity and the Anderson–Grüneisen parameter are used to predict the iInterionic distances for 19 alkali halides at melting with the help of Kumar’s formula. A simple model for melting has been developed by estimating the diffusional force from knowledge of iInterionic potentials. The values of Tm thus obtained are found to show fairly good agreement with experimental values of melting temperatures and to be better than those obtained by Bosi