Thermal Properties of Se<sub>100–x</sub>Zn<sub>x</sub> Glassy System
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Abstract
The crystallization process in Se<sub>100–x</sub>Zn<sub>x</sub> glassy system is investigated using differential scanning calorimeters (DSC). The samples are prepared by conventional melt-quenching technique in the composition range 2 ≤ x ≤ 20 (at%). Non-isothermal measurements are carried out for different heating rates .The value of the glass transition temperature T<sub>g</sub> the crystallization temperature T<sub>c</sub> and the crystallization peak temperature T<sub>p</sub>, are found to be depending upon both heating rate as well as the composition from thermal analytical data. The investigation of crystallization kinetics indicates a single stage crystallization process. The glass transition energy E<sub>g</sub> and the crystallization activation energy E<sub>c</sub> are also evaluated from thermal analytical data. The analyzer has been used the most reliable non-isothermal kinetic methods. The value of kinetics parameters E<sub>g</sub>, E<sub>c</sub> and ‘n’ are calculated using non-isothermal kinetics methods. The analysis shows that the incorporation of Zinc content has a strong influence on the crystallization mechanism for the Se<sub>100–x</sub>Zn<sub>x</sub> glassy system.
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