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Research Article
Raman microspectroscopy of some iron oxides and oxyhydroxides
Article first published online: 4 DEC 1998
DOI: 10.1002/(SICI)1097-4555(199711)28:11<873::AID-JRS177>3.0.CO;2-B
Copyright © 1997 John Wiley & Sons, Ltd.
1097-4555/asset/cover.gif?v=1&s=d2563a28f6ee44d20c855dfca1ce107304920493 "Journal of Raman Spectroscopy")
Additional Information
How to Cite
de Faria, D. L. A., Venâncio Silva, S. and de Oliveira, M. T. (1997), Raman microspectroscopy of some iron oxides and oxyhydroxides. Journal of Raman Spectroscopy, 28: 873–878. doi: 10.1002/(SICI)1097-4555(199711)28:11<873::AID-JRS177>3.0.CO;2-B
Publication History
- Issue published online: 4 DEC 1998
- Article first published online: 4 DEC 1998
- Manuscript Accepted: 4 JUL 1997
- Manuscript Received: 20 FEB 1997
Funded by
- FAPESP
- CNPq
- Abstract
- Cited By
Abstract
Hematite (α-Fe2O3), magnetite (Fe3O4), wüstite (FeO), maghemite (γ-Fe2O3), goethite (α-FeOOH), lepidocrocite (γ-FeOOH) and δ-FeOOH were studied by Raman microscopy. Such compounds have already been studied by Raman spectroscopy, but there are some disagreements in the reported data. Here, Raman microscopy was employed to investigate the laser power dependence of the spectra of these oxides and oxyhydroxides. Low laser power was used for the reference spectra in order to minimize the risks of spectral changes due to sample degradation. The results obtained show that increasing laser power causes the characteristic bands of hematite to show up in the spectra of most of the compounds studied whereas the hematite spectrum undergoes band broadening and band shifts. © 1997 John Wiley & Sons, Ltd.