Apparent activation energy of structural relaxation for Se70Te30 glass

Differential scanning calorimetry and dc conductivity measurements were used to study Structural relaxation of Se70Te30 glass. A single set of Tool-Narayanaswamy-Moynihan (TNM) parameters was obtained from the curve-fitting procedure. The value of apparent activation energy Delta h* was further confirmed by two non-fitting techniques. Results of the Delta h* evaluation from the T-g dependence oil cooling rate are discussed in terms of how the T-f determination might be influenced by the material's Structure type and by the interference of the crystallization process. (C) 2009 Elsevier B.V. All rights reserved.