Abstract
Calorimetric study of Se85−x Te15Sn x (x = 0, 2, 4 and 6) glassy alloys have been performed using Differential Scanning Calorimetry (DSC) under non-isothermal conditions at four different heating rates (5, 10, 15 and 20 °C/min). The glass transition temperature and peak crystallization temperature are found to increase with increasing heating rate. It is remarkable to note that a second glass transition region is associated with second crystallization peak for Sn additive Se–Te investigated samples. Three approaches have been employed to study the glass transition region. The kinetic analysis for the first crystallization peak has been taken by three different methods. The glass transition activation energy, the activation energy of crystallization, and Avrami exponent (n) are found to be composition dependent. The crystallization ability is found to increase with increasing Sn content. From the experimental data, the temperature difference (T p − T g) is found to be maximum for Se83Te15Sn2 alloy, which indicates that this alloy is thermally more stable in the composition range under investigation.
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This study is financially supported by UGC (Major Research Project), New Delhi.
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Patial, B.S., Thakur, N. & Tripathi, S.K. Crystallization study of Sn additive Se–Te chalcogenide alloys. J Therm Anal Calorim 106, 845–852 (2011). https://doi.org/10.1007/s10973-011-1579-5
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DOI: https://doi.org/10.1007/s10973-011-1579-5