Correlation between structure and properties in vanadium phosphate glasses and amorphous V2O5−x/O<x〉1/ films

T. Szörényi, I. Wojnárovits, I. Hevesi

Research output: Article

5 Citations (Scopus)

Abstract

There is an apparent contradiction between the predictions of Mott-theory and experimental conductivity data of vanadium phosphate glasses. In parallel investigations we measured the molar volume of V2O5-P2O5 glasses with 55, 60, 70, 75 and 85 mol % V2O5 systematically varying the vanadium valence state, and characterized their microstructure by SEM, TEM and EDAX. We demonstrate that phase separation is a characteristic feature of this glass system and there is a compositional gradient at phase boundaries. It is suggested that amorphous V2O5−x/O<x<1/ films prepared by chemical vapour deposition can be appropriate prototype materials for testing the predictions of polaron theory for conduction.

Original languageEnglish
Pages (from-to)393-400
Number of pages8
JournalJournal of Non-Crystalline Solids
Volume42
Issue number1-3
DOIs
Publication statusPublished - jan. 1 1980

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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