Current Applied Physics, Vol.9, No.4, 807-811, 2009
Correlation between Meyer-Neldel rule and phase separation in Se98-xZn2Inx chalcogenide glasses
The present work reports the observation of Meyer-Neldel rule for the thermally activated crystallization of glassy Se98-xZn2Inx (0 <= x <= 10) alloys. We have observed a strong co-relation between the pre-exponential factor K-o of rate constant K(T) of crystallization and activation energy of crystallization E-c in the present case. This indicates the presence of compensation effect for the non-isothermal crystallization process in the present glassy system, which is explained in terms of phase separation of the present alloys due to flaw bonds of these amorphous solids. (c) 2008 Elsevier B.V. All rights reserved.
Keywords:Chalcogenide glasses;Activation energy of crystallization;Amorphous to crystalline phase transition;DSC technique