Enhanced ferromagnetic properties of Fe+N codoped TiO2 anatase |
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| Authors: | Haiying Wang Jianhong Wei Rui Xiong Jing Shi |
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| Affiliation: | 1. Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, PR China;2. College of Physics Information and Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China;3. Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430072, PR China |
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| Abstract: | The undoped, Fe-doped, N-doped and Fe+N codoped titanium dioxide (TiO2) samples were synthesized. Detailed analysis shows that all the samples are pure anatase with the shape of a nanorod, and N and Fe ions are incorporated into the TiO2 lattice. For all the samples, the saturation magnetization at room temperature is in the order of the Fe+N codoped TiO2>N-doped TiO2>Fe-doped TiO2>undoped TiO2. Upon N doping, enhanced ferromagnetic properties were observed. The N content in Fe+N codoped TiO2 is about two times as large as that in the N-doped TiO2, which may account for the largest saturation magnetization observed in Fe+N codoped TiO2. It is suggested that metal ion and N codoping may provide a new approach for increasing the saturation magnetization in TiO2-based dilute magnetic semiconductors. |
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| Keywords: | Titanium dioxide Dilute magnetic semiconductor Fe+N codoping |
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