Origin of magnetic moments in defective TiO2 single crystals

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dc.creatorZhou, Shengqiang
dc.creatorCizmar, E.
dc.creatorPotzger, K.
dc.creatorKrause, M.
dc.creatorTalut, G.
dc.creatorHelm, M.
dc.creatorFassbender, J.
dc.creatorZvyagin, S. A.
dc.creatorWosnitza, J.
dc.creatorSchmidt, H.
dc.date2009-02-12
dc.date.accessioned2026-07-07T12:51:48Z
dc.date.available2026-07-07T12:51:48Z
dc.descriptionIn this paper we show that ferromagnetism can be induced in pure TiO2 single crystals by oxygen ion irradiation. By combining x-ray diffraction, Raman-scattering, and electron spin resonance spectroscopy, a defect complex, \emph{i.e.} Ti$^{3+}$ ions on the substitutional sites accompanied by oxygen vacancies, has been identified in irradiated TiO2. This kind of defect complex results in a local (TiO$_{6-x}$) stretching Raman mode. We elucidate that Ti$^{3+}$ ions with one unpaired 3d electron provide the local magnetic moments.
dc.description4 pages, 4 figures, to be published at Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/0902.2092
dc.identifierhttp://arxiv.org/abs/0902.2092
dc.identifierPhys. Rev. B 79, 113202 (2009)
dc.identifierdoi:10.1103/PhysRevB.79.113201
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223107
dc.subjectMaterials Science
dc.titleOrigin of magnetic moments in defective TiO2 single crystals
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