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Title: A study of the crystallization kinetics in Se68Ge22Pb10 chalcogenide glass
Authors: Mehta, N
Agarwal, P
Kumar, A
Issue Date: Dec-2004
Publisher: CSIR
IPC Code: Int. Cl.7 C03C
Abstract: Differential scanning calorimetry (DSC) is performed at different heating rates under non-isothermal conditions to study the crystallization kinetics of Se68Ge22Pb10 chalcogenide glass. Different kinetic parameters such as the activation energy of crystallization (Ec), the order parameter (n), the rate constant and its frequency factor have been determined. Four different non-isothermal methods Kissinger’s method, Matusita-Sakka theory, Augis-Bennett approximation and Ozawa-Chen method have been used in the present study. The average value of activation energy of crystallization Ec is 1.477 eV. The average value of Avrami’s index n is 3.61, which indicates that in the glassy Se68Ge22Pb10, two crystallization (two- and three-dimensional growth) mechanisms are working simultaneously during its amorphous to crystalline transformation.
Page(s): 511-515
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.11(6) [December 2004]

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