Abstract
The measurements of heat capacity were made for liquid Se–Te mixtures using an adiabatic scanning calorimeter. Liquid Se x Te 1- x mixtures with x =0.2 to 0.6 exhibit maxima in the temperature dependence of heat capacity. The position of heat capacity maximum shifts toward higher temperature with increasing Se concentration. The plots of heat capacity against conductivity show a maximum in the range of 150 to 400 (ohm·cm) -1 . It indicates that the bonding rearrangement is most active in this range of conductivity. A strong correlation is found between the heat capacity and the temperature dependence of magnetic susceptibility. In the semiconducting region, the large excess heat capacity can be attributed to the formation of dangling bonds. In the metallic region, the excess heat capacity can be related to the change in the density of states caused by the bonding rearrangement.
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