ISSN:
1572-9540
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Mössbauer spectra and electrical conductivities were measured for the purpose of studying on the conduction mechanism of xFe2O3−(40-x)V2O5−60P2O5 glasses. The ratios Fe2+/Fe2++Fe3+ in xFe2O3−(40-x)V2O5−60P2O5 glasses were determined by Mössbauer spectroscopy. On the composition dependence of D. C. conductivities in these glasses, the minimum of log σ at each temperature was obtained at 25Fe2O3−15V2O5−60P2O5. The conductivities of ternary glassses in Fe rich region could be explained only by the changes of carrler (Fe2+) concentration and the hopping conduction between Fe2+ ions and Fe3+ ions in binary glasses. In V rich region, the saturation tendency of D. C. conductivities are observed. It was suggested to be explained by increasing of V4+ ions due to the influence of Fe ions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02401906
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