Thermal stability and glass transition kinetics in GeTeSb glasses by using non-isothermal measurement

Chalcogenide Letters

article

M. M. Heireche¹  L. Heireche²  M. Belhadji² 

[1]Departement of Exact Sciences, Higher Training Teacher's School of Oran

[2]Laboratory of Sciences and Condensed Matter ,(LSMC), University of Oran1 Ahmed Ben Bella

关键词: Chalcogenide glasses;    Differential scanning calorimetry;    Glass transition temperature;    Activation energy;   

DOI  :  10.15251/CL.2022.1910.735

学科分类：物理（综合）

来源: Forum of Chalcogeniders

【 摘 要 】

In this paper we have analysed the thermal properties of three different compositions of chalcogenide glasses Ge15Te85-xSbx (x=0.5, 1, 1.5). The samples have been prepared using the melt quenching technique and the characterisation is done using X-ray diffraction. The compositional dependence on properties were studied using Differential Scanning Calorimetry (DSC) analysis using non-isothermal measurement. The glassy sample crystallized by two transition temperatures Tg1 and Tg2.The dependence of glass transition temperature on heating rate has been studied by Lasocka empirical relation and the Kissinger equation. As a result, the apparent activation energy for glass transition has been determined. Thermal stability has also been determined from the temperature difference between the onset crystallization and glass transition temperature.

【 授权许可】

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