Abstract
Binary As-Se glasses with different amounts of As content have been prepared and scanned with different heating rates (348Kmin(-1)) over temperatures ranging from 300 to 450K. Both the glass transition temperature (T-gl) and the temperature peak of crystallization (T-pc) increase as a function of As and/or the values. A good correlation between T-gl and T-pc has been investigated. The observed increase in T-gl and T-pc by increasing the values or as a function of As is well discussed in accordance with Lasocka's relationship and using the average coordination number A(cn), the viscosity at glass transition (T-gl) and the overall mean bond energy E. The glass transition E-gl and crystallization activation energies (E-gl and E-pc) were determined based on the changes in T-gl and T-pc values due to the heating rate (). The increase in the values of E-gl and E-pc with increasing the As content is expected due to the increase in T-gl and T-pc values. The kinetic exponent n and the crystal dimensionality m have been determined.