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Crystallization studies on bulk SixTe100-x glasses

Asokan, S and Parthasarathy, G and Gopal, ESR (1986) Crystallization studies on bulk SixTe100-x glasses. In: Journal of Non-Crystalline Solids, 86 (1-2). pp. 48-64.

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Abstract

Bulk SixTe100-x (10 less-than-or-equals, slant x less-than-or-equals, slant 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 congruent with 20. The glasses with 10 less-than-or-equals, slant x less-than-or-equals, slant 20 undergo double glass transition and double stage crystallization phenomena. On the other hand, glasses with 22 less-than-or-equals, slant x less-than-or-equals, slant 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 congruent with 20 can be explained on the basis of the changes in the network topologies of IV-VI chalcogenide glasses.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation and Applied Physics (Formally ISU)
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 03 Jul 2009 06:29
Last Modified: 19 Sep 2010 05:35
URI: http://eprints.iisc.ernet.in/id/eprint/20939

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