Polymorphic Transition in LiH

Abstract

The transition pressure at which LiH would be expected to go from a NaCl to a CsCl structure is calculated to be 3050 and 3800 kg/${\mathrm{cm}}^2$ by using two different potential functions. Also the transition pressures are calculated for KCl and RbI to be 22 500 and 5400 kg/${\mathrm{cm}}^2$, respectively, which are in good agreement with the observed values.