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Infrared and Raman spectroscopic studies of glasses with NASICON-type chemistry

Rao, KJ and Sobha, KC and Kumar, Sundeep (2001) Infrared and Raman spectroscopic studies of glasses with NASICON-type chemistry. In: Proceedings of the Indian Academy of Sciences Chemical Sciences, 113 (5). pp. 497-514.

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Abstract

Structures of NASICON glasses of the general formula AB(2)(PO4)(3), Where A = Li, Na or K and B = Fe, Ga, Ti, V or Nb, have been investigated using vibrational (IR and Raman) spectroscopies. Phosphate species appear to establish an equilibrium via a disproportionation reaction involving a dynamical bond-switching mechanism where both charge and bonds are conserved. B ions in the system acquire different coordinations to oxygens. Alkali ions cause absorptions due to cage vibrations. All the observed spectroscopic features are consistent with speciation involving disproportionation reactions.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Indian Academy of Sciences.
Keywords: NASICON glasses;dynamical bond-switching mechanism;dispropor-tionation reactions
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 10 Sep 2004
Last Modified: 19 Sep 2010 04:16
URI: http://eprints.iisc.ernet.in/id/eprint/1910

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