Crystallization kinetics study of Pb4.3Se95.7 chalcogenide glass using DSC technique

被引：23

作者：

Elabbar, A. A. ^{[1
]}

Abu El-Oyoun, M. ^{[1
]}

Abu-Sehly, A. A. ^{[1
]}

Alamri, S. N. ^{[1
]}

机构：

[1] Taibah Univ, Fac Sci, Dept Phys, Madina, Saudi Arabia

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2008年 / 69卷 / 10期

关键词：

Chalcogenides; Glasses; DSC; Phase transitions;

D O I：

10.1016/j.jpcs.2008.05.008

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Differential scanning calorimetry (DSC) technique was used to study the kinetics of amorphous to crystalline transformation in Pb4.3Se95.7 chalcogenide glass. Non-isothermal measurements were performed at different heating rates (5-60K/min). The activation energy of crystallization was determined by analyzing the data using Matusita et al. method. A strong heating rate dependence of the activation energy was observed. The isoconversional methods of Kissinger-Akahira-Sunose (KAS) and Vyazovkin confirm that the activation energy of crystallization is not constant but varies with the degree of crystallization and hence with temperature. This variation indicates that the transformation from amorphous to crystalline phase in Pb4.3Se95.7 is a complex process involving different mechanisms of nucleation and growth. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：2527 / 2530

页数：4

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