Calculation of the pressure dependence of anion polarizabilities in crystals

A program has been developed in Maple V that allows for the calculation of anion polarizabilities of ionic crystals (based on the Clausius-Mossotti tr eatment) and its pressure dependence. It has been applied to alkali halides for which the results may be compared to those obtained from experimental data. It opens the possibility of its further use for the evaluation of the pressure dependence of the dielectric constant from the knowledge of exper imental data at p = 0; we here apply this to alkaline-earth fluorides obtai ning very good results. (C) 1989 Elsevier Science Ltd. All rights reserved.