Abstract
A comparative study of the thermodynamic properties of the C70 fullerene, sulfur, and C70S48 crystals has been made by differential scanning calorimetry. It is shown that only C70S48 has an endothermic δ phase transition with a peak at 430 K, which lies in the temperature region exhibiting conductivity and dielectric anomalies. A correlation between the behavior of the sulfur sublattice in the C70S48 crystals and the thermodynamic parameters of the transition has been established.
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