Theory of the heat of formation in homovalent disordered solid alloys of non-transition metals

Abstract
A density functional pseudopotential formalism is used to calculate the heat of formation and the volume of formation of disordered solid alloys formed by two alkali metals and two alkali-earth metals. The results are then analysed in terms of the semi-empirical parameters (electronegativity, charge transfer and interstitial electron density) often used in the semi-empirical descriptions of the alloy formation process.