Structural Study of Iron Phosphate Glasses

Author

Andrea Mogus-Milankovic
Branko Pivac
Kresimir Furic
D. E. Day, Missouri University of Science and TechnologyFollow

Abstract

The effect of iron content on the structure of xFe₂O₃(100-x)P₂O₅, (15≤x≤50), glasses was investigated by Raman spectroscopy and x-ray diffraction. The Raman spectra for these glasses indicate that the nature of the phosphate network changes from the chain like metaphosphate to the orthophosphate structure with increasing Fe₂O₃ content. As the Fe₂O₃ content increased from 15 to 38 wt% the average length of the polyphosphate chains became shorter as the iron ions were effective in bonding the ends of the chains to the surrounding glass structure. At higher Fe₂O₃ content, up to 50 wt%, the iron ions occupy tetrahedral sites as a result of iron substitution into phosphate chains and formation of FeO₄ tetrahedra. The structure of the glass differs from that of the crystal but the local environment of the iron ions is retained in the glass and crystallised counterpart of these iron phosphate compositions.

Recommended Citation

A. Mogus-Milankovic et al., "Structural Study of Iron Phosphate Glasses," Physics and Chemistry of Glasses, vol. 38, no. 2, pp. 74 - 78, Society of Glass Technology, Apr 1997.

Department(s)

Materials Science and Engineering

International Standard Serial Number (ISSN)

0031-9090

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1997 Society of Glass Technology, All rights reserved.

Publication Date

01 Apr 1997