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

Kumar, Sundeep ; Rao, K. J. (2004) Dielectric relaxation in glasses: possible origin of the stretched relaxation behaviour Chemical Physics Letters, 387 (1-3). pp. 91-94. ISSN 0009-2614

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.cplett.2004.01.102

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:Article
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ID Code:91035
Deposited On:16 May 2012 08:34
Last Modified:16 May 2012 08:34

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