Title

Structural Study of Na2O-FeO-Fe2O3-P 2O5 Glasses by Raman and Mössbauer Spectroscopy

Abstract

Five series of Na2O-FeO-Fe2O3-P 2O5 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 (CNFe) 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.

Department(s)

Materials Science and Engineering

Second Department

Chemistry

Keywords and Phrases

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; Mossbauer; Raman

International Standard Serial Number (ISSN)

0022-3093

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2014 Elsevier, All rights reserved.

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