Abstract
Differential scanning calorimetry was used to study glassy Se100- x Sb x (x = 2, 4, 6, 8 and 10) alloys at a heating rate of 10°C min−1 under non-isothermal conditions. An extremely large increase in the specific heat, Cp , was observed at the glass-transition temperature. It was also found that the values of Cp below and above the glass-transition temperature, Cpg and Cpe , respectively, are highly composition dependent. This indicates that the Sb additive used in the present study influences the structure of the a-Se. The variation of Cp reveals local extrema in the Se–Sb glassy system at x = 4 and x = 8. The composition dependence of both Cpe and Cpg is explained in terms of the atomic structure.
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