Raman microspectroscopy of some iron oxides and oxyhydroxides

Journal of Raman SpectroscopyVolume 28, Issue 11 p. 873-878 Research Article Raman microspectroscopy of some iron oxides and oxyhydroxides D. L. A. de Faria, Corresponding Author D. L. A. de Faria Laboratório de Espectroscopia Molecular, Instituto de Química, Universidade de São Paulo, CP 26077, 05599-970 São Paulo, BrazilLaboratório de Espectroscopia Molecular, Instituto de Química, Universidade de São Paulo, CP 26077, 05599-970 São Paulo, BrazilSearch for more papers by this authorS. Venâncio Silva, S. Venâncio Silva Departamento de Engenharia Metalúrgica e de Materiais, Escola Politécnica da Universidade de São Paulo, 05599-970 São Paulo, BrazilSearch for more papers by this authorM. T. de Oliveira, M. T. de Oliveira Laboratório de Espectroscopia Molecular, Instituto de Química, Universidade de São Paulo, CP 26077, 05599-970 São Paulo, BrazilSearch for more papers by this author D. L. A. de Faria, Corresponding Author D. L. A. de Faria Laboratório de Espectroscopia Molecular, Instituto de Química, Universidade de São Paulo, CP 26077, 05599-970 São Paulo, BrazilLaboratório de Espectroscopia Molecular, Instituto de Química, Universidade de São Paulo, CP 26077, 05599-970 São Paulo, BrazilSearch for more papers by this authorS. Venâncio Silva, S. Venâncio Silva Departamento de Engenharia Metalúrgica e de Materiais, Escola Politécnica da Universidade de São Paulo, 05599-970 São Paulo, BrazilSearch for more papers by this authorM. T. de Oliveira, M. T. de Oliveira Laboratório de Espectroscopia Molecular, Instituto de Química, Universidade de São Paulo, CP 26077, 05599-970 São Paulo, BrazilSearch for more papers by this author First published: 04 December 1998 https://doi.org/10.1002/(SICI)1097-4555(199711)28:11<873::AID-JRS177>3.0.CO;2-BCitations: 2,285AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat 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. Citing Literature Volume28, Issue11November 1997Pages 873-878 RelatedInformation