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dc.contributor.authorCOEY, JOHNen
dc.date.accessioned2017-01-16T12:06:12Z
dc.date.available2017-01-16T12:06:12Z
dc.date.issued2016en
dc.date.submitted2016en
dc.identifier.citationSaha S, Cao B.-C, Motapothula M, Cong C.-X, Sarkar T, Srivastava A, Sarkar S, Patra A, Ghosh S, Ariand, Coey J.M.D, Yu T, Venkatesan T, Magnetic Modes in Rare Earth Perovskites: A Magnetic-Field-Dependent Inelastic Light Scattering study, Scientific Reports, 6, 2016, 36859-en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/78749
dc.description.abstractHere, we report the presence of defect-related states with magnetic degrees of freedom in crystals of LaAlO3 and several other rare-earth based perovskite oxides using inelastic light scattering (Raman spectroscopy) at low temperatures in applied magnetic fields of up to 9 T. Some of these states are at about 140 meV above the valence band maximum while others are mid-gap states at about 2.3 eV. No magnetic impurity could be detected in LaAlO3 by Proton-Induced X-ray Emission Spectroscopy. We, therefore, attribute the angular momentum-like states in LaAlO3 to cationic/anionic vacancies or anti-site defects. Comparison with the other rare earth perovskites leads to the empirical rule that the magnetic-field-sensitive transitions require planes of heavy elements (e.g. lanthanum) and oxygen without any other light cations in the same plane. These magnetic degrees of freedom in rare earth perovskites with useful dielectric properties may be tunable by appropriate defect engineering for magneto-optic applications.en
dc.description.sponsorshipWe would like to acknowledge the financial support from National Research Foundation, Singapore, under project nos. NRF2008NRFCRP002-024, NRF-CRP8-2011-06, NRF-CRP10-2012-02, NRF-CRP12-2013-01, MOE2012-T2-2-049, as well as Mid-IR Photonics (MIPS) Funding from ODPRT (NUS).en
dc.format.extent36859en
dc.relation.ispartofseriesScientific Reportsen
dc.relation.ispartofseries6en
dc.rightsYen
dc.subjectdefect-related states with magnetic degrees of freedom in crystals of LaAlO3en
dc.subject.lcshdefect-related states with magnetic degrees of freedom in crystals of LaAlO3en
dc.titleMagnetic Modes in Rare Earth Perovskites: A Magnetic-Field-Dependent Inelastic Light Scattering studyen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jcoeyen
dc.identifier.rssinternalid142884en
dc.identifier.doihttp://dx.doi.org/10.1038/srep36859en
dc.rights.ecaccessrightsopenAccess
dc.identifier.rssurihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84995404143&doi=10.1038%2fsrep36859&partnerID=40&md5=6de023586a6ca781d9886f9cb656bfaden
dc.identifier.orcid_id0000-0003-0053-8452en


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