351. Oxygen Defect-Mediated Magnetism in Fe-C Codoped TiO2
- Author
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Zhaorui Zou, Haiying Wang, Zhongpo Zhou, and Meng Du
- Subjects
Anatase ,Materials science ,Article Subject ,Magnetism ,Analytical chemistry ,Physics::Optics ,chemistry.chemical_element ,02 engineering and technology ,01 natural sciences ,Oxygen ,Condensed Matter::Materials Science ,Condensed Matter::Superconductivity ,0103 physical sciences ,lcsh:TA401-492 ,Physics::Atomic and Molecular Clusters ,General Materials Science ,Saturation (magnetic) ,010302 applied physics ,Spin coating ,Doping ,General Engineering ,021001 nanoscience & nanotechnology ,chemistry ,Ferromagnetism ,lcsh:Materials of engineering and construction. Mechanics of materials ,Condensed Matter::Strongly Correlated Electrons ,0210 nano-technology - Abstract
The magnetic properties of the C doped and C-Fe codoped TiO2films fabricated by sol-gel and spin coating have been investigated combining experiments and first-principles calculations. All the samples exhibit the anatase crystal phase and the room temperature ferromagnetism. The values of the saturation magnetizations are in the order of Fe-C codoped TiO2> Fe-C codoped TiO2(annealed in O2) > C doped TiO2> C doped TiO2(annealed in O2). The calculated net moment values are in the order of Fe-C codoped TiO2> C doped TiO2with oxygen vacancies existing, in accord with the experimental results. The hybridization of Fe 3d, C 2p,and O 2p(nearest to the Fe defect) led to the spin split of Fe 3d, C 2p,and O 2pwhich contributed to the ferromagnetism. more...
- Published
- 2016
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