Abstract
The calorimetric parameters of Se85Te15 glass have been investigated using differential scanning calorimetry under non-isothermal conditions at four different heating rates (5, 10, 15 and 20 °C min−1). The glass transition temperature and peak temperature of crystallization are found to increase with increasing heating rate. The apparent activation energy for glass transition and for the crystallization peak has been determined using different empirical approaches. The kinetic parameters are calculated using methods recently developed for non-isothermal conditions. The calculated value of the kinetic exponent indicates one-dimensional growth for Se85Te15 chalcogenide glass. The average values of activation energy for glass transition and crystallization are found to be equal to (267.82±3.9) and (152.13±16.9) kJ mol−1, respectively. The ease of glass formation and fragility has also been studied.
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