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dc.contributor.authorBertacco, R.
dc.contributor.authorBaldrati, Lorenzo
dc.contributor.authorTan, Aik Jun
dc.contributor.authorMann, Maxwell
dc.contributor.authorBeach, Geoffrey Stephen
dc.date.accessioned2018-01-18T14:22:18Z
dc.date.available2018-01-18T14:22:18Z
dc.date.issued2017-01
dc.date.submitted2016-08
dc.identifier.issn0003-6951
dc.identifier.issn1077-3118
dc.identifier.urihttp://hdl.handle.net/1721.1/113220
dc.description.abstractThe magneto-ionic effect is a promising method to control the magnetic properties electrically. Charged mobile oxygen ions can easily be driven by an electric field to modify the magnetic anisotropy of a ferromagnetic layer in contact with an ionic conductor in a solid-state device. In this paper, we report on the room temperature magneto-ionic modulation of the magnetic anisotropy of ultrathin CoFeB films in contact with a GdO[subscript x] layer, as probed by polar micro-Magneto Optical Kerr Effect during the application of a voltage across patterned capacitors. Both Pt/CoFeB/GdO[subscript x] films with perpendicular magnetic anisotropy and Ta/CoFeB/GdO[subscript x] films with uniaxial in-plane magnetic anisotropy in the as-grown state exhibit a sizable dependence of the magnetic anisotropy on the voltage (amplitude, polarity, and time) applied across the oxide. In Pt/CoFeB/GdO[subscript x] multilayers, it is possible to reorient the magnetic anisotropy from perpendicular-to-plane to in-plane, with a variation of the magnetic anisotropy energy greater than 0.2 mJ m[subscript -2]. As for Ta/CoFeB/GdO[subscript x] multilayers, magneto-ionic effects still lead to a sizable variation of the in-plane magnetic anisotropy, but the anisotropy axis remains in-plane.en_US
dc.publisherAmerican Institute of Physics (AIP)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1063/1.4973475en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceMIT Web Domainen_US
dc.titleMagneto-ionic effect in CoFeB thin films with in-plane and perpendicular-to-plane magnetic anisotropyen_US
dc.typeArticleen_US
dc.identifier.citationBaldrati, L. et al. “Magneto-Ionic Effect in CoFeB Thin Films with in-Plane and Perpendicular-to-Plane Magnetic Anisotropy.” Applied Physics Letters 110, 1 (January 2017): 012404 © 2017 Author(s)en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Materials Science and Engineeringen_US
dc.contributor.mitauthorBaldrati, Lorenzo
dc.contributor.mitauthorTan, Aik Jun
dc.contributor.mitauthorMann, Maxwell
dc.contributor.mitauthorBeach, Geoffrey Stephen
dc.relation.journalApplied Physics Lettersen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2018-01-16T18:36:58Z
dspace.orderedauthorsBaldrati, L.; Tan, A. J.; Mann, M.; Bertacco, R.; Beach, G. S. D.en_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-6858-8424
dc.identifier.orcidhttps://orcid.org/0000-0002-8719-2652
mit.licensePUBLISHER_POLICYen_US


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