Structural Study of Na₂O-FeO-Fe₂O₃-P₂O₅ Glasses by Raman and Mössbauer Spectroscopy
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.
L. Ma et al., "Structural Study of Na₂O-FeO-Fe₂O₃-P₂O₅ Glasses by Raman and Mössbauer Spectroscopy," Journal of Non-Crystalline Solids, vol. 402, pp. 64-73, Elsevier, Oct 2014.
The definitive version is available at https://doi.org/10.1016/j.jnoncrysol.2014.05.013
Materials Science and Engineering
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)
Article - Journal
© 2014 Elsevier, All rights reserved.
01 Oct 2014