Effects of depositing rate on structure and magnetic properties of Mn:TiO2 films grown by plasma-assisted molecular beam epitaxy
We research the relationship between structural quality and magnetic ordering, using epitaxial Mn-doped anatase TiO2 with excellent structural quality as a model system. Epitaxial films deposited slowly 0.08 (A/s) possess a perfect crystalline structure, whereas films deposited at 0.2 (A/s) are foun...
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| Veröffentlicht in: | Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2009-01, Vol.156 (1-3), p.90-93 |
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| container_title | Materials science & engineering. B, Solid-state materials for advanced technology |
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| creator | Li, X.Y. Wu, S.X. Xu, L.M. Li, C.T. Liu, Y.J. Xing, X.J. Li, S.W. |
| description | We research the relationship between structural quality and magnetic ordering, using epitaxial Mn-doped anatase TiO2 with excellent structural quality as a model system. Epitaxial films deposited slowly 0.08 (A/s) possess a perfect crystalline structure, whereas films deposited at 0.2 (A/s) are found to have a highly defected crystalline structure, as characterized by X-ray diffraction (XRD). X-ray photoelectron spectroscopy studies (XPS) indicate the possibility of hybridization between the Mn2+ ions and host defects. In contrast to defective Mn:TiO2, these structurally superior films show negligible magnetism. It is demonstrated that room temperature ferromagnetism strongly correlated with the defect density of the sample. |
| doi_str_mv | 10.1016/j.mseb.2008.11.036 |
| format | Article |
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Epitaxial films deposited slowly 0.08 (A/s) possess a perfect crystalline structure, whereas films deposited at 0.2 (A/s) are found to have a highly defected crystalline structure, as characterized by X-ray diffraction (XRD). X-ray photoelectron spectroscopy studies (XPS) indicate the possibility of hybridization between the Mn2+ ions and host defects. In contrast to defective Mn:TiO2, these structurally superior films show negligible magnetism. It is demonstrated that room temperature ferromagnetism strongly correlated with the defect density of the sample.</description><identifier>ISSN: 0921-5107</identifier><identifier>DOI: 10.1016/j.mseb.2008.11.036</identifier><language>eng</language><ispartof>Materials science & engineering. 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| issn | 0921-5107 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| title | Effects of depositing rate on structure and magnetic properties of Mn:TiO2 films grown by plasma-assisted molecular beam epitaxy |
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