Final published version
Research output: Contribution to Journal/Magazine › Journal article
Research output: Contribution to Journal/Magazine › Journal article
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TY - JOUR
T1 - Crystal growth kinetics in Se87.5 Te10 Sn2.5 glass
AU - Abdel-Rahim, M.A.
AU - Gaber, A.
AU - Abu-Sehly, A.A.
AU - Abdelazim, Nema Mohamed Safwat Ibrahim
PY - 2013/9/15
Y1 - 2013/9/15
N2 - The crystallization process of Se87.5 Te10 Sn2.5 glassy was studied by differential thermal analysis (DTA) technique under non-isothermal condition at various heating rates. The crystallization parameters were calculated using different models. The validity of the Johnson–Mehl–Avrami (JMA) model to describe the crystallization process for the studied composition was discussed. Results obtained by directly fitting the experimental DTA data to the calculated DTA curves indicate that the crystallization process of Se87.5 Te10 Sn2.5 glass cannot be satisfactorily described by the JMA model. On the other hand, kinetic parameters of both the peak crystallization temperature Tp and the glass transition temperature Tg are significantly influenced by the heating rate. Simulation results indicate that the Sestak–Berggren (SB) model is more suitable to describe the crystallization kinetics. The crystalline phases were identified by using X-ray diffraction technique (XRD) and scanning electron microscopy (SEM).
AB - The crystallization process of Se87.5 Te10 Sn2.5 glassy was studied by differential thermal analysis (DTA) technique under non-isothermal condition at various heating rates. The crystallization parameters were calculated using different models. The validity of the Johnson–Mehl–Avrami (JMA) model to describe the crystallization process for the studied composition was discussed. Results obtained by directly fitting the experimental DTA data to the calculated DTA curves indicate that the crystallization process of Se87.5 Te10 Sn2.5 glass cannot be satisfactorily described by the JMA model. On the other hand, kinetic parameters of both the peak crystallization temperature Tp and the glass transition temperature Tg are significantly influenced by the heating rate. Simulation results indicate that the Sestak–Berggren (SB) model is more suitable to describe the crystallization kinetics. The crystalline phases were identified by using X-ray diffraction technique (XRD) and scanning electron microscopy (SEM).
KW - Se–Te–Sn system
KW - Chalcogenide glasses
KW - X-ray diffraction
KW - Scanning electron microscopy
KW - Thermal analysis
U2 - 10.1016/j.jnoncrysol.2013.05.030
DO - 10.1016/j.jnoncrysol.2013.05.030
M3 - Journal article
VL - 376
SP - 158
EP - 164
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
ER -