| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1802927 | Journal of Magnetism and Magnetic Materials | 2009 | 6 Pages |
Abstract
The surface structure of the iron oxide nanoparticles obtained by the co-precipitation method has been investigated, and a thin layer of α-FeOOH absorbed on surface of the nanoparticle is confirmed by analyses of Fourier transform infrared (FTIR), X-ray photoelectron spectra (XPS) and surface photovoltage spectroscopy (SPS). After annealed at 400 °C, the α-FeOOH can be converted to γ-Fe2O3. The simple-annealed procedure resulted in the formation of Fe3O4@γ-Fe2O3 core/shell structure with improved stability and a higher magnetic saturation value, and also the simple method can be used to obtain core/shell structure in other similar system.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Qian Gao, Fenghua Chen, Jilin Zhang, Guangyan Hong, Jiazuan Ni, Xiao Wei, Dejun Wang,