التفاصيل البيبلوغرافية
| العنوان: |
Glass-forming ability and thermal stability of Se100−x(Ge2Sb2Te5)x glassy alloys. |
| المؤلفون: |
Kumar, Ajit, Ram, Indra Sen, Kumar, Sunil, Ram, Jagjiwan, Upadhyay, A. N., Singh, Kedar |
| المصدر: |
Journal of Thermal Analysis & Calorimetry; Nov2018, Vol. 134 Issue 2, p923-931, 9p |
| مصطلحات موضوعية: |
THERMAL stability, METALLIC glasses, ISOTHERMAL processes, GLASS transition temperature, CRYSTALLIZATION |
| مستخلص: |
Glassy Se100−x(Ge2Sb2Te5)x (x = 5, 10, 15 and 20) bulk alloys were prepared by melt-quenched technique and studied by using differential scanning calorimetry at different heating rates under non-isothermal condition. The detailed thermal analysis shows that the glass transition temperature (Tg) depends on heating rates and x content. In particular, it is found that the glass-forming ability, thermal stability (Tc − Tg) and crystallization activation energy (Ec) increase with increased x content in amorphous Se, whereas glass transition activation energy (Eg) and fragility index (F) decrease with increased x contents. Variation in these parameters can be explained on the basis of network-forming ability of Se and bonding arrangement among the constituent atoms of alloys. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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