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Structural Study of Na₂O-FeO-Fe₂O₃-P₂O₅ Glasses by Raman and Mössbauer Spectroscopy

Research output: Contribution to journalArticlepeer-review

Abstract

Five series of Na 2 O-FeO-Fe 2 O 3 -P 2 O 5 glasses with compositional ranges of 3.0 < O/P < 3.5 and 0 < Fe/P < 0.67 were prepared. Glass structure was studied using Raman spectroscopy and Mössbauer spectroscopy. For glasses with similar O/P ratios, an increase in the Fe/P ratio produced broader distributions of phosphate anions, as indicated in the Raman spectra, and the average coordination number (CN Fe ) of the Fe ions decreased, as indicated by the Mössbauer data. The interaction between phosphate anions and iron polyhedra causes systematic changes in the Raman frequencies as well as peak intensities.

Original languageAmerican English
Pages (from-to)64-73
Number of pages10
JournalJournal of Non-Crystalline Solids
Volume402
DOIs
StatePublished - Oct 1 2014

Keywords

  • Iron oxides
  • Raman spectroscopy
  • Sodium
  • Average coordination number
  • Compositional range
  • Disproportionation reactions
  • Mossbauer
  • Raman
  • Ssbauer spectroscopies
  • Structural studies
  • Systematic changes
  • Glass
  • Disproportionation reaction
  • Iron-phosphate glass

Disciplines

  • Chemistry
  • Materials Science and Engineering

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