Crystallization Studies on bulk $Si_xTe_{100-x}$ Glasses

Asokan, S and Parthasarathy, G and Gopal, ESR (1986) Crystallization Studies on bulk $Si_xTe_{100-x}$ Glasses. In: Journal of Non-Crystalline Solids, 86 (1-2). pp. 48-64.

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Abstract

Bulk $Si_xTe_{l00-x}$ $(10 \leq x \leq 28)$ 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 $T_g$, the recrystallization temperature $T_{cr}$ and the melting temperature $T_m$ show an unusual behaviour at the composition $x \simeq 20$. The glasses with $(10 \leq x \leq 20)$ undergo double glass transition and double stage crystallization phenomena. On the other hand, glasses with $(22 \leq x \leq 28)$ exhibit eutectic crystallization. The phases at different stages of crystallization have been identified by using X-ray diffraction techniques. The unusual behaviour at $x \simeq 20$ can be explained on the basis of the changes in the network topologies of IV-VI chalcogenide glasses.

Item Type: Journal Article Copyright of the article belongs to Elsevier Science. Division of Physical & Mathematical Sciences > Physics 10 Jul 2008 19 Sep 2010 04:47 http://eprints.iisc.ernet.in/id/eprint/14925