Ionic relaxation in AgI-Ag2O-TeO2 glasses

Dutta, D. ; Ghosh, A. (2004) Ionic relaxation in AgI-Ag2O-TeO2 glasses Journal of Physics: Condensed Matter, 16 (15). pp. 2617-2624. ISSN 0953-8984

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We report the ionic conductivity relaxation in fast ion conducting glasses in the system xAgI-(1- x)(0.40Ag2O-0.60TeO2) in the temperature range 128-303 K and in the frequency range 10 Hz-2 MHz. We have observed that the conductivity relaxation can be described by the highly non-exponential Kohlrausch-Williams-Watts function. The Ag+ ions have to overcome the same barrier while relaxing as well as while conducting. We have further observed that the migration of Ag+ ions in the glassy matrix is highly cooperative and the cooperation is extended as the AgI content is increased.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics Publishing.
ID Code:11648
Deposited On:13 Nov 2010 14:06
Last Modified:02 Jun 2011 05:07

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