*Member, The American Ceramic Society.
A Raman Study of Iron–Phosphate Crystalline Compounds and Glasses
Article first published online: 1 APR 2011
© 2011 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 9, pages 3123–3130, September 2011
How to Cite
Zhang, L. and Brow, R. K. (2011), A Raman Study of Iron–Phosphate Crystalline Compounds and Glasses. Journal of the American Ceramic Society, 94: 3123–3130. doi: 10.1111/j.1551-2916.2011.04486.x
L. Pinckney—contributing editor
This work was supported by the National Science Foundation under Grant No. DMR-0305202 and DMR-0502463.
- Issue published online: 19 SEP 2011
- Article first published online: 1 APR 2011
- Manuscript No. 28759. Received October 11, 2010; approved February 2, 2011.
Ferrous and ferric phosphate crystalline compounds and glasses were studied using Raman spectroscopy. A comparison of the spectra from crystalline and glassy ortho-, pyro-, and metaphosphates indicates that similar phosphate anions constitute the structures of the respective materials, and some information about the compositional dependence of the phosphate-site distributions in the glasses can be gleaned from relative peak intensities. A correlation exists between the average P–O bond distance and the Raman peak frequencies in the crystalline compounds, and this correlation is used to provide information about the structures of the iron phosphate glasses. For example, the average P–O bond distance is estimated to decrease from about 1.57 Å for iron metaphosphate glasses (O/P∼3.0) to 1.54 Å for iron orthophosphate glasses (O/P∼4.0). These bond distances are in good agreement with those reported from diffraction studies of similar glasses.