Model for melting-curve maxima at high pressure

Abstract

A two-species model for the liquid proposed by Klement in order to account for the existence of high-pressure melting-curve maxima is further examined from the point of view of the theory of regular solutions. Equations for the concentration of the two species as a function of pressure and temperature are derived. A survey of structural data on liquids provides positive evidence for the existence of two species in the melts of some pure substances.