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Ac conductivity studies of lithium thioborate glasses

Rao, KJ and Estournegraves, C and Megravenegravetrier, M and Levasseura, A (1944) Ac conductivity studies of lithium thioborate glasses. In: Philosophical Magazine Part B: Physics of Condensed Matter. Electronics, Optical and Magnetic Properties, 70 (4). 809 -816.

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The variation in the exponent s in σa.c. agr ωs as a function of temperature is reported for lithium thioborate glasses. The origin of the observed minimum in s is discussed using the diffusion-controlled relaxation (DCR) model. An entirely new model for the a.c. conductivity of highly modified ionic glasses has been proposed and expressions for relaxation identical with those of the DCR model have been obtained, providing a new explanation for the temperature behaviour of s. The origin of two activation barriers generally observed in a.c. conductivity studies is examined in the light of the new model.

Item Type: Journal Article
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Additional Information: Copyright of this article belongs to Taylor and Francis Group.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 03 Jun 2011 07:32
Last Modified: 03 Jun 2011 07:32
URI: http://eprints.iisc.ernet.in/id/eprint/36103

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