Abstract

Molar volume of the liquid Pb-Te system has been determined with a high energy γ-ray attenuation method. It has been found that addition of a small amount of Pb smears out the anomalous temperature dependence of the molar volume of liquid Te around the melting temperature. The isotherm of molar volume as a function of concentration shows a cusp at the composition of Pb 50 Te 50 . The results have been discussed in relation with the atomic association persisting in the liquid state which causes the anomalous electrical and thermodynamic properties of this system.

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