Cluster model of glass transition. The variation of $T_g$ with cage vibrational frequency of $Na^+$ ions in sodium borovanadate glasses

Muthupari, S and Rao, KJ (1994) Cluster model of glass transition. The variation of $T_g$ with cage vibrational frequency of $Na^+$ ions in sodium borovanadate glasses. In: Chemical Physics Letters, 223 (1-2). pp. 133-138.

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Abstract

The cage vibrational frequencies of $Na^+$ ions in sodium borovanadate glasses have been examined using far-infrared spectros- copy. The glass transition temperature, $T_g$, is found to vary linearly with the cage vibrational frequency, v. The variation of v has been related to the average excess partial charge on the cage oxygen atoms and hence to the force constant. The observed linear variation of $T_g$ as a function of v has been rationalized on the basis of the cluster model of glass transition.

Item Type:	Journal Article
Publication:	Chemical Physics Letters
Publisher:	Elsevier
Additional Information:	The copyright of this article belongs to Elsevier.
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	06 Jul 2006
Last Modified:	19 Sep 2010 04:30
URI:	http://eprints.iisc.ac.in/id/eprint/7931

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