Dielectric relaxation in glasses: possible origin of the stretched relaxation behaviour

Kumar, Sundeep and Rao, KJ (2004) Dielectric relaxation in glasses: possible origin of the stretched relaxation behaviour. In: Chemical Physics Letters, 387 (1-3). pp. 91-94.

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Abstract

The origin of non-Debye dielectric relaxation observed widely in network forming glasses is examined. It is attributed to the presence of two polarization centers, which relax in the manner of Debye polarization with a time delay between them. The experimentally observed relaxation therefore appears broadened and is fitted well by the powerful Kohlrausch–Williams–Watts (KWW) stretched relaxation function. It is shown that the relaxation behaviour predicted by the present model is in very good agreement with both the experimental and KWW generated relaxation behaviour.

Item Type:	Journal Article
Publication:	Chemical Physics Letters
Publisher:	Elsevier
Additional Information:	The copyright belongs to Elsevier.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	27 May 2006
Last Modified:	19 Sep 2010 04:27
URI:	http://eprints.iisc.ac.in/id/eprint/6894

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