Abstract
The crystallization kinetics of glassy GeS2 was investigated by non-isothermal heat flux differential scanning calorimetry (DSC) on both bulk and powder samples. It was shown that high-temperature modification of germanium disulphide crystallizes from an undercooled melt of composition GeS2. The crystallization kinetics can be described by the Šesták-Berggren (SB) kinetic model, using the Arrhenius dependence of the rate constant. It was found that the Johnson-Mehl-Avrami (JMA) kinetic model is less suitable for the description of the studied crystallization process. A BASIC program has been written for both SB and JMA models to evaluate kinetic data from experimental DSC curves recorded with the Perkin-Elmer Thermal Analysis Data Station system.
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