EXCESS ENTROPY-DENSITY FLUCTUATION CORRELATION IN LIQUID-METALS

A plot of measured excess entropy DELTAS against measured density fluctuation function S(0) for each of the simple liquid metals at its melting temperature yields, very roughly, a single curve. This curve extrapolates to coincide, again very roughly, with one defined by the expanded alkali liquids in coexistence with their vapours. We use the melting temperature data to confirm qualitatively a recent picture of ab initio calculated interatomic potential trends throughout the Periodic Table.