Abstract

The temperature-modulated differential scanning calorimetry technique has been applied to the measurement of the thermal properties in the glass transition region of chalcogenide glasses of the Ag x (As 0.4Se 0.6) 100− x systems, where 0⩽ x⩽42.5 at.%. All samples in this work were exposed to the same temperature-modulated heating and cooling schedules with the average heating and cooling rate of 5°C/min. The total heat flow, modulated heat flow, reversing heat flow, and non-reversing heat flow during heating and cooling schedules were measured. The parameters, glass transition temperature, T g, relaxation enthalpy, Δ H, specific heat capacity, C p, and specific heat capacity difference, Δ C p, which characterize the thermal events in the glass transition region, were also determined.

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