Results of differential scanning calorimetry, at different heating rates, a, on Ga5Se9S glass are reported and discussed. From the heating rates dependence of values of Tg and Tp, the glass activation energy, Eg and the crystallization activation energy, Ec' are derived. The crystallization results are interpreted in terms of recent analyses developed for non-isothermal crystallization and also for the evaluation of Ec. The crystallization mechanism is then characterized. From the obtained results, the glassy GaSSe9S has two-dimensional growth, the average value of the order of crystallization mechanism, n is 3. The average value of the glass activation energy, Eg and crystallization activation energy, Ec' for GaSSe9S glass are 189 ± 4 and 69 ± 5 kJ/mol, respectively.
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PACS: 6470 P; 6140; 6140 D