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Lithium ion transport in germanophosphate glasses

Kumar, Sundeep and Rao, KJ (2004) Lithium ion transport in germanophosphate glasses. In: Solid State Ionics, 170 (3-4). pp. 191-199.

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Glasses in the system $Li_2O-O_2–P_2O_5$ have been prepared using melt quenching route. $Li^+$ ion transport has been investigated in these glasses using both d.c. and a.c. conductivity measurements. Arrhenius plots of d.c. conductivity exhibits two different slopes, which has been discussed in the light of cluster-tissue model. A.c. conductivity data has been fitted to single power law. Dielectric relaxation has been analyzed based on the behaviour of moduli. Good collapse on to master plots is observed for both a.c. conductivity and moduli. The behaviour of $E_{dc}$, s and $\beta$ are found to be consistent when conductivity mechanism is considered as involving NBO–BO switching as the first step, which is followed by $Li^+$ ion migration.

Item Type: Journal Article
Publication: Solid State Ionics
Publisher: Elsevier
Additional Information: The copyright belongs to Elsevier.
Keywords: Glasses;Power law;Stretched exponential function
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 26 Apr 2006
Last Modified: 19 Sep 2010 04:26
URI: http://eprints.iisc.ac.in/id/eprint/6486

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