Crystallisation kinetics in Se80-xTe20Sbx glassy alloys

The kinetics of crystallisation has been studied in glassy Se80-xTe20Sbx (0 less than or equal to x less than or equal to 15) by two different techniq ues: (i) a non-isothermal DSC technique where multiscans at different heati ng rates are used to calculate the kinetic parameters; (ii) isothermal anne aling at different temperatures near the crystallisation temperature and me asuring the conductivity variation with time, The activation energies obtai ned by the two techniques match reasonably well, A discontinuity in Delta E is observed at 10 at% Sb which is explained in terms of a mechanically opt imised structure at a particular composition. Copyright (C) 1999 John Wiley & Sons, Ltd.