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Investigation on the kinetics of devitrification of GeS2-based glasses

Published online by Cambridge University Press:  01 April 2005

Xiaobo Liu ,
Shaoxiong Shen  and
Animesh Jha
Xiaobo Liu
Affiliation:
The Institute for Materials Research, University of Leeds, Leeds LS2 9JT, United Kingdom
Shaoxiong Shen
Affiliation:
The Institute for Materials Research, University of Leeds, Leeds LS2 9JT, United Kingdom
Animesh Jha*
Affiliation:
The Institute for Materials Research, University of Leeds, Leeds LS2 9JT, United Kingdom
*
a) Address all correspondence to this author. e-mail: a.jha@leeds.ac.uk
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Abstract

We studied the devitrification kinetics for the binary (80GeS2–20Ga2S3, mol%) and ternary (77GeS2–15Ga2S3–6CsI, mol%) glass compositions using the differential thermal analysis (DTA) technique. The overall activation energies for devitrification for these two types of glasses were determined by using the Kissinger method and the Johnson–Mehl–Avrami equation from the DTA data. The t-t-t curves were calculated using the activation energy for devitrification for each composition derived from the DTA experiments. The experimental evidences have shown that the incorporation of SnS2 and Sb2S3 in a ternary-based GeS2 glass slows down the overall devitrification rate significantly, which is confirmed by the reduction in the overall area under the crystallization exotherm.

Keywords

Differential thermal analysis (DTA)Glass
Type
Research Article
Information
Journal of Materials Research , Volume 20 , Issue 4 , April 2005 , pp. 856 - 863
Copyright
Copyright © Materials Research Society 2005

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