Magneto-Optical Spectroscopy of Anatase TiO2 Doped with Co

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dc.creatorFukumura, T.
dc.creatorYamada, Y.
dc.creatorTamura, K.
dc.creatorNakajima, K.
dc.creatorAoyama, T.
dc.creatorTsukazaki, A.
dc.creatorSumiya, M.
dc.creatorFuke, S.
dc.creatorSegawa, Y.
dc.creatorChikyow, T.
dc.creatorHasegawa, T.
dc.creatorKoinuma, H.
dc.creatorKawasaki, M.
dc.date2002-12-17
dc.date.accessioned2026-07-07T02:48:46Z
dc.date.available2026-07-07T02:48:46Z
dc.descriptionMagneto-optical spectroscopy of a transparent ferromagnetic semiconductor, anatase TiO2 doped with Co, is carried out at room temperature. A large magneto-optical response with ferromagnetic field dependence is observed throughout from ultraviolet to visible range and increases with increasing Co content or carrier concentration. The magnitude of magnetic circular dichroism (MCD) per unit thickness has a peak around the absorption edge such a huge value of ~10400 degree/cm at 3.57 eV for a 10 mol% Co-doped specimen. Although the results are not sufficient to prove that the ferromagnetism is in the ordinary framework of diluted magnetic semiconductors, the coexistence of Co impurity and mobile carrier is shown to transform the band structure of host TiO2 to generate ferromagnetism.
dc.description10 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0212389
dc.identifierhttp://arxiv.org/abs/cond-mat/0212389
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/20538
dc.subjectMaterials Science
dc.subjectStrongly Correlated Electrons
dc.titleMagneto-Optical Spectroscopy of Anatase TiO2 Doped with Co
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