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Cross-Linkages and Electrical Properties

As previously reported, the peculiarity of alkali vanado-phosphate glasses is ascribed to the mixed electronic-ionic conductivity. The electronic conductivity is due to the small polaron hopping between the TM ions with different valence state and it could be related to the presence of V +-0-y + species in the glass network. For NaVP systems, TableS.lO reports the various contributions that are included in the V-O-V linkages. It could be highlighted that the increase of V content results in a major number of V -O-V linkages, which might be correlated to an increase of the electronic conductivity. [Pg.204]

In the present work, MD simulations were used to study the structure of alkali vanado-phosphate glasses providing insight into the short and medium range order of the glass network and to the role of the vanadium ions and their environment in the glass matrices. [Pg.205]

Mercier, G. Palavit, L. Montague, C. FoUet-Houttemane, A survey of transition-metal-containing phosphate glasses. C. R. Chim. 5(11), 693-703 (2002) [Pg.206]

Garcia Sole, A. Duran, Photoluminescence of Tp in P205-Na20-AI2O3 glass. J. Mater. Sd. 23(6), 1921-1922 (1988) [Pg.206]

Satyanarayana, G. Govindaraj, A. Karthikeyan, Effects of differing ratios of network modifier (Ag20) to network formers (M0O3 + V2O5) and dopant salt (Agl) concentrations in silver-based superionic glassy compounds. J. Non-Cryst. Solids 136(3), 219-226 (1991) [Pg.206]


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