[Raman spectroscopic study on the iron oxide film prepared by iron oxidation method].
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.
Hu
Tao
T
School of Physics, Peking University, Beijing 100871, China.
Lu
Xin
X
Yan
Yan
Y
Fu
Yun-yi
YY
Zhang
Han
H
Zhang
Shu-lin
SL
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
D005290:Ferric Compounds; C000499:ferric oxide; D007501:Iron; D010100:Oxygen