Crystallization studies on bulk SixTe100-x glasses

Asokan, S. ; Parthasarathy, G. ; Gopal, E. S. R. (1986) Crystallization studies on bulk SixTe100-x glasses Journal of Non-Crystalline Solids, 86 (1-2). pp. 48-64. ISSN 0022-3093

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Bulk SixTe100-x (10 ≤ x ≤ 28) glasses have been prepared by the melt quenching technique. The crystallization of these glasses has been studied by using differential scanning calorimetry. The composition dependence of the glass transition temperature Tg, the recrystallization temperature Tcr and the melting temperature Tm show an unusual behaviour at the composition x ≅ 20. The glasses with 10 ≤ x ≤ 20 undergo double glass transition and double stage crystallization phenomena. On the other hand, glasses with 22 ≤ x ≤ 28 exhibit eutectic crystallization. The phases at different stages of crystallization have been identified by using X-ray diffraction techniques. The unusual behaviour at x ≅ 20 can be explained on the basis of the changes in the network topologies of IV-VI chalcogenide glasses.

Item Type:Article
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ID Code:71142
Deposited On:25 Nov 2011 12:58
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