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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.11 [2004] >
IJEMS Vol.11(6) [December 2004] >
| 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) |
| Source: | IJEMS Vol.11(6) [December 2004]
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