International Journal of New Horizons in Physics
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Journal

International Journal of New Horizons in Physics


Volume
& Issue

Volume 3, Issue 2


Published
on

July 1, 2016


Pages

75-81


DOI

Article

Thermal Study and Crystallization Kinetics of In x(Te10 Se90)100-x Glassy Chalcogenides

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Authors

A. M. Abd Elnaeim* Affiliation:
Department of Physics, Faculty of Science, Al-Azahar University, 71542 Assiut, Egypt.
and K. A. Aly Affiliation:
Department of Physics, Faculty of Science, Al-Azahar University, 71542 Assiut, Egypt; Physics Department, Faculty of Science and Arts, King Abdulaziz University (KAU), Khulais, Saudi Arabia.


Abstract

Results of differential scanning calorimetry (DSC) at different heating rates (2.5 ≤ $\alpha$ ≤ 40 K/min.) in $In_x(Te_{10}Se_{90})_{100-x}$ (where 0 ≤ x ≤10 at.%) glassy system were studied. The heating rate ($\alpha$) are found to affect the characteristic temperatures (the temperature of glass transition ($T_g$), the onset temperature of crystallization ($T_c$) and the temperature of crystallized peak ($T_p$)) which in turn helps one in the determining of the kinetic exponent ($n$) and the activation energies for the glass transition ($E_g$) and crystallization ($E_c$). The obtained results were discussed in terms of the approach of chemical bond, the cohesive energy (CE) and the average heats of atomization ($H_s$). The X-ray diffractograms confirmed the amorphous nature of the prepared glasses while the annealed glasses at temperature ($T = T_c$) shows some crystallites such as Se–Te and In–Se.


Keywords

Chalcogenides, DSC, XRD


Citation

Abd Elnaeim, A. M. & Aly, K. A. (2016). Thermal study and crystallization kinetics of in x(Te10 Se90)100-x glassy chalcogenides. International Journal of New Horizons in Physics, 3(2), 75–81. https://doi.org/10.18576/ijnhp/030206

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