ENTROPIES OF LIQUID RARE-EARTH-METALS NEAR THE MELTING-POINT

In this paper, the thermodynamic entropies of the liquid rare-earth me tals are explained by the statistical theory of entropy using the hypo theses about the electronic structure suggested by what is believed to be true of the corresponding solids. The pair correlation entropies a re computed from measured pair correlation functions, while the triple t correlation entropies are estimated by measured structure factors wi th the help of the uniform fluid model for evaluation of a change in t he structure factor on application of the pressure. The magnitude of t he pair and triplet correlation entropies is smaller than that of the liquid 3d transition metals near the melting point. The excess entropy of a hard sphere model is discussed in relation to the correlation en tropies studied.