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Glass transition kinetics of some Se-Te-Ag chalcogenide glasses |
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| Authors: | R S Tiwari N Mehta R K Shukla A Kumar |
| Institution: | (1) Department of Physics, Harcourt Butler Technological Institute, Kanpur - 208 002, India;(2) Department of Physics, Harcourt Butler Technological Institute, Kanpur - 208 002, India;(3) Department of Physics, Harcourt Butler Technological Institute, Kanpur - 208 002, India;(4) Department of Physics, Harcourt Butler Technological Institute, Kanpur - 208 002, India |
| Abstract: | Summary The present paper reports the Differential Scanning Calorimetric (DSC) study of some Ag doped Se-Te chalcogenide glasses. DSC runs were taken at different heating rates. Well-defined endothermic and exothermic peaks were obtained at glass transition and crystallization temperatures. The variation of glass transition temperature Tgwith Ag concentration has been studied. It has been found that Tgdecreases with increase in Ag concentration. The heating rate dependence of Tgis used to evaluate the activation energy of glass transition (DEt). The value of<span style='font-size:10.0pt; font-family:"SymbolProp BT";mso-bidi-font-family:"SymbolProp BT"'>DEthas been found to increase with increase in Ag concentration followed by nearly constant value at higher concentrations of Ag. |
| Keywords: | DSC chalcogenide glasses glass transition kinetics |
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