Abstract

The authors have predicted the phase transition pressures in some alkali halides using a three-body potential (TBP) model. The phase transition pressures (29.0 and 2.2 GPa) obtained for two alkali halides (NaCl and KCl) are in closer agreement with their corresponding experimental data (29.0 and 2.0 GPa) compared with those obtained by earlier workers from the pseudopotential total energy method. This TBP model is promising with respect to prediction of the phase transition pressure of other alkali halides as well.

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