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Scopus
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EXPORT DATE:06 Jul 2018
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Menéndez, E., Modarresi, H., Petermann, C., Nogués, J., Domingo, N., Liu, H., Kirby, B.J., Mohd, A.S., Salhi, Z., Babcock, E., Mattauch, S., Van Haesendonck, C., Vantomme, A., Temst, K.
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Lateral Magnetically Modulated Multilayers by Combining Ion Implantation and Lithography
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(2017) Small, 13 (11), art. no. 1603465, .
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Cited 3 times.
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https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015313134&doi=10.1002%2fsmll.201603465&partnerID=40&md5=ac7cd46f5cd17a2f866189f880d38182
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DOI: 10.1002/smll.201603465
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AFFILIATIONS: KU Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200 D, Leuven, Belgium;
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Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, Barcelona, Spain;
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ICREA, Pg. Lluís Companys 23, Barcelona, Spain;
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KU Leuven, Laboratorium voor Vaste-Stoffysica en Magnetisme, Celestijnenlaan 200 D, Leuven, Belgium;
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NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, United States;
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Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Garching, Germany
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ABSTRACT: The combination of lithography and ion implantation is demonstrated to be a suitable method to prepare lateral multilayers. A laterally, compositionally, and magnetically modulated microscale pattern consisting of alternating Co (1.6 µm wide) and Co-CoO (2.4 µm wide) lines has been obtained by oxygen ion implantation into a lithographically masked Au-sandwiched Co thin film. Magnetoresistance along the lines (i.e., current and applied magnetic field are parallel to the lines) reveals an effective positive giant magnetoresistance (GMR) behavior at room temperature. Conversely, anisotropic magnetoresistance and GMR contributions are distinguished at low temperature (i.e., 10 K) since the O-implanted areas become exchange coupled. This planar GMR is principally ascribed to the spatial modulation of coercivity in a spring-magnet-type configuration, which results in 180° Néel extrinsic domain walls at the Co/Co-CoO interfaces. The versatility, in terms of pattern size, morphology, and composition adjustment, of this method offers a unique route to fabricate planar systems for, among others, spintronic research and applications. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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AUTHOR KEYWORDS: ion implantation; lateral multilayers; lithography; magnetoresistance; planar technology
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INDEX KEYWORDS: Cobalt; Cobalt compounds; Domain walls; Film preparation; Gold; Ion implantation; Ions; Lithography; Magnetoresistance; Multilayers; Temperature, Applied magnetic fields; Giant magnetoresistances (GMR); Low temperatures; Microscale patterns; Oxygen ion implantation; Planar technology; Research and application; Spatial modulations, Giant magnetoresistance
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FUNDING DETAILS: 283883; Generalitat de Catalunya; 2014-SGR-1015; FWO; EC, European Commission; Applied Materials; SEV-2013-0295, MINECO, Ministerio de Economía y Competitividad
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FUNDING TEXT: This work was financed by the Research Foundation-Flanders (FWO), the Concerted Research ActionGOA/14/007, the 2014-SGR-1015 project of the Generalitat de Catalunya, and the European Commission under the 7th Framework Programme through the ?Research Infrastructure? action of the ?Capacities? Programme, NMI3-II Grant No. 283883. This work is based upon experiments (Proposal Nos. 5928 and 9384) performed at the MARIA instrument operated by JCNS at Heinz Maier-Leibnitz Zentrum (MLZ), Garching, Germany. The authors would like to thank IMEC for access to its lithography facilities as well as J. Moonens and J. Loo for technical support. ICN2 acknowledges support from the Severo Ochoa Program (MINECO, Grant SEV-2013-0295). Finally, the authors thank J. A. Borchers and B. B. Maranville for fruitful discussions and J. England of Applied Materials (UK) for the assistance in performing the TRIDYN simulations.
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CORRESPONDENCE ADDRESS: Menéndez, E.; KU Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200 D, Belgium; email: enricmenendez@gmail.com
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PUBLISHER: Wiley-VCH Verlag
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ISSN: 16136810
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CODEN: SMALB
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LANGUAGE OF ORIGINAL DOCUMENT: English
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ABBREVIATED SOURCE TITLE: Small
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DOCUMENT TYPE: Article
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SOURCE: Scopus
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