Abstract
Kinematical studies of crystallization in bulk amorphous Se70Te30-xCdx (x = 2, 6, 8, and 10) glasses were made using differential scanning calorimetry. The crystallization data are examined in terms of modified Kissinger and Matusita equations for the nonisothermal crystallization, and the activation energy for crystallization Ec is evaluated from the data obtained at different heating rates. The results show bulk nucleation with two-dimensional growth for these glasses. The enthalpy release during crystallization for all the compositions is measured. Maximum enthalpy release is obtained for the Se70Te28Cd10 glass having the highest thermal stability and the enthalpy release for Se70Te20Cd10, having the lowest thermal stability as indicated by the Tc - Tg values, is found to be minimum.
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