Viscosity and glass transition in amorphous oxides

Ojovan, M.I. (2008) Viscosity and glass transition in amorphous oxides. Advances in Condensed Matter Physics, 2008. Art. No.817829. ISSN 1687-8108

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Abstract

An overview is given of amorphous oxide materials viscosity and glass-liquid transition phenomena. The viscosity is a continuous function of temperature, whereas the glass-liquid transition is accompanied by explicit discontinuities in the derivative parameters such as the specific heat or thermal expansion coefficient. A compendium of viscosity models is given including recent data on viscous flow model based on network defects in which thermodynamic parameters of configurons—elementary excitations resulting from broken bonds—are found from viscosity-temperature relationships. Glass-liquid transition phenomena are described including the configuron model of glass transition which shows a reduction of Hausdorff dimension of bonds at glass-liquid transition.

Item Type:	Article
Copyright, Publisher and Additional Information:	Copyright © 2008 Michael I. Ojovan. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield)
Depositing User:	Miss Anthea Tucker
Date Deposited:	28 Apr 2009 15:15
Last Modified:	08 Feb 2013 16:58
Published Version:	http://dx.doi.org/10.1155/2008/817829
Status:	Published
Publisher:	Hindawi Publishing Corporation
Refereed:	Yes
Identification Number:	10.1155/2008/817829
URI:	http://eprints.whiterose.ac.uk/id/eprint/8539

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