title: [Raman spectroscopic study on the iron oxide film prepared by iron oxidation method].
abstract: Micro-Raman spectroscopy was used to investigate the chemical composition, microstructure and crystalline phase of an iron oxide sample with three-layer macro-structure prepared by iron oxidation. Two laser lines of 514 and 633 nm with a power of 0.5 mW on the sample were employed to excite the Raman spectra. Comparing the sample spectra to that of bulk alpha-Fe2O3, the sample Raman peaks were assigned. And it was found for the top-layer that the Raman frequencies were down shifted and the peak widths broadened. Therefore we verified that the top-layer of the verified sample is a nano-structure alpha-Fe2O3, the main component of the middle-layer is Fe3O4 and the bottom-layer is most like bulk alpha-Fe2O3.
authors.affiliation: School of Physics, Peking University, Beijing 100871, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Hu
authors.forename: Xin
authors.initials: X
authors.lastname: Lu
authors.forename: Yan
authors.initials: Y
authors.lastname: Yan
authors.forename: Yun-yi
authors.initials: YY
authors.lastname: Fu
authors.forename: Han
authors.initials: H
authors.lastname: Zhang
authors.forename: Shu-lin
authors.initials: SL
authors.lastname: Zhang
mesh_terms: D005290:Ferric Compounds / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D007834:Lasers; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D013059:Spectrum Analysis, Raman / Q000379:methods*; D014961:X-Ray Diffraction
chemical_list: D005290:Ferric Compounds; C000499:ferric oxide; D007501:Iron; D010100:Oxygen