دورية
Structure and Magnetic Properties of Fe-Doped TiO2 Nano-Crystals by Nonaqueous Synthesis
| العنوان: | Structure and Magnetic Properties of Fe-Doped TiO |
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| المؤلفون: | Li, Chu Feng, Yue, Ling, Jin, Wen, Zhang, Ting, Wang, Huan, Xu, Qiong, Wang, Jia Wei, Shi, Jing, Xiong, Rui, Yin, Di |
| المصدر: | Materials Science Forum; November 2010, Vol. 663 Issue: 1 p883-889, 7p |
| مستخلص: | Ti1-xFexO2 nanocrystals with x = 0.01, 0.02, 0.03 were prepared via a nonaqueous synthesis route. X-ray diffraction, transmission electron microscopy and high resolution transmission electron microscopy characterization confirmed the formation of anatase-phase nanocrystals with the average crystallite sizes of around 10 nm. The lattice constants alternate with the increase of the Fe content and no iron clusters were generated. X-ray photoelectron spectroscopy measurements showed that the substitutional Fe ions present mainly the valence of +3. The magnetic hysteresis loops measured at room temperature (RT) 300K showed that all the doped samples are atypically ferromagnetic, and the coercivity (Hc) of all the Fe-doping samples is around 0.1 T. An interpretation for the intrinsic RT ferromagnetism is put up based on the free carriers and defects induced interaction between Fe3+ ions. |
| قاعدة البيانات: | Supplemental Index |
| تدمد: | 02555476 16629752 |
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| DOI: | 10.4028/www.scientific.net/MSF.663-665.883 |