Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevB.87.220405
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dc.titleReversible room-temperature ferromagnetism in Nb-doped SrTiO3 single crystals
dc.contributor.authorLiu, Z.Q.
dc.contributor.authorLü, W.M.
dc.contributor.authorLim, S.L.
dc.contributor.authorQiu, X.P.
dc.contributor.authorBao, N.N.
dc.contributor.authorMotapothula, M.
dc.contributor.authorYi, J.B.
dc.contributor.authorYang, M.
dc.contributor.authorDhar, S.
dc.contributor.authorVenkatesan, T.
dc.contributor.authorAriando
dc.date.accessioned2014-10-07T04:35:50Z
dc.date.available2014-10-07T04:35:50Z
dc.date.issued2013-06-18
dc.identifier.citationLiu, Z.Q., Lü, W.M., Lim, S.L., Qiu, X.P., Bao, N.N., Motapothula, M., Yi, J.B., Yang, M., Dhar, S., Venkatesan, T., Ariando (2013-06-18). Reversible room-temperature ferromagnetism in Nb-doped SrTiO3 single crystals. Physical Review B - Condensed Matter and Materials Physics 87 (22) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.87.220405
dc.identifier.issn10980121
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/82982
dc.description.abstractThe search for oxide-based room-temperature ferromagnetism has been one of the holy grails in condensed matter physics. Room-temperature ferromagnetism observed in Nb-doped SrTiO3 single crystals is reported in this Rapid Communication. The ferromagnetism can be eliminated by air annealing (making the samples predominantly diamagnetic) and can be recovered by subsequent vacuum annealing. The temperature dependence of magnetic moment resembles the temperature dependence of carrier density, indicating that the magnetism is closely related to the free carriers. Our results suggest that the ferromagnetism is induced by oxygen vacancies. In addition, hysteretic magnetoresistance was observed for magnetic field parallel to the current, indicating that the magnetic moments are in the plane of the samples. The x-ray photoemission spectroscopy, the static time-of-flight and the dynamic secondary ion mass spectroscopy and proton induced x-ray emission measurements were performed to examine the magnetic impurities, showing that the observed ferromagnetism is unlikely due to any magnetic contaminant. © 2013 American Physical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1103/PhysRevB.87.220405
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentNUS NANOSCIENCE & NANOTECH INITIATIVE
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.contributor.departmentPHYSICS
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.description.doi10.1103/PhysRevB.87.220405
dc.description.sourcetitlePhysical Review B - Condensed Matter and Materials Physics
dc.description.volume87
dc.description.issue22
dc.description.page-
dc.description.codenPRBMD
dc.identifier.isiut000320609300001
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