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Study of Glass Transition Kinetics of Ge25–x Se75Sb x (x = 12, 15 and 18) Glassy Alloys by Differential Scanning Calorimetery

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Present paper describes the study of glass transition kinetics of Ge25–x Se75Sb x (x = 12, 15 and 18) glassy alloys using Differential Scanning Calorimetery (DSC). The glassy alloys have been prepared by rapid quenching of melt technique. For structural characterization XRD and EDAX techniques have been used. DSC thermograms have been recorded at heating rates 5, 10, 15 and 20 K/min. from room temperature to 550 °C. Heating rate dependence of glass transition temperature has been studied by Lasocka’s empirical relation. Dependence of glass transition temperature on Sb content in Ge–Se–Sb glassy alloys has also been discussed. Sb has been added at the cost of Ge in Ge–Se–Sb glassy series. Activation energy of glass transition has been evaluated by Kissinger Peak shift method. Glass transition temperature and activation energy of glass transition, both, show the dependence on composition of glassy samples. This has been accounted for band formation in the samples.
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Keywords: Activation Energy; Chalcogenide; DSC; Glass Transition Temperature

Document Type: Research Article

Affiliations: 1: Department of Physics, Ahir College, Rewari 123401, Haryana, India 2: Department of Applied Sciences and Humanities, BIET, Jhansi 284128, UP, India 3: Department of Physics, Banasthali University, Banasthali, Tonk 304022, Rajasthan, India 4: Department of Physics, ACC Wing, IMA Deharadun 248007, UK, India

Publication date: November 1, 2016

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