Correlation between Meyer-Neldel rule and phase separation in Se98-xZn2Inx chalcogenide glasses

Abstract

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 K0 of rate constant K(T) of crystallization and activation energy of crystallization Ec 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. © 2008 Elsevier B.V. All rights reserved.