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Exchange bias and two steps magnetization reversal in porous Co/CoO layer

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dc.contributor.authorOvejero, Jesús G.
dc.contributor.authorGodinho, Vanda
dc.contributor.authorLacroix, Bertrand
dc.contributor.authorGarcía, Miguel A.
dc.contributor.authorHernando Grande, Antonio
dc.contributor.authorFernández, Asunción
dc.date.accessioned2023-06-17T13:23:10Z
dc.date.available2023-06-17T13:23:10Z
dc.date.issued2019-06-05
dc.description©2019 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license In memoriam Dr. Patricia Crespo del Arco. This work has been supported by the Spanish Ministry of Science and Innovation (projects MAT2012-37109-C02 and 01; MAT2017-86540-C4-1-R; CTQ2015-65918-R, EU co-financed by FEDER); the CSIC (PIE 201760E002) and H2020-LEIT-NMBP/0248; Regional Government of Madrid through Projects S2013/MIT-2850(NANOFRONTMAG) and P2018/NMT-4321 (NANOMAGCOST). The authors also acknowledge the Laboratory for Nanoscopies and Spectroscopies for the TEMfacilities and the technical assistance of I. Rosa, O. Montes and M.R. Garcia.
dc.description.abstractIn this paper Co/CoO thick layers (hundreds of nanometers) of different porosity and oxidation degree were prepared in a magnetron sputtering deposition process by tailoring the DC sputtering power, as well as the process gas and target composition. The control of the synthesis parameters allowed the nanostructuration of the films with a singular distribution of closed pores and a controlled amount of CoO. We observed an exchange bias field of 2.8 KOe for porous Co/CoO composites, similar to Co/CoO bilayers but for coatings thicker than 300 nm. Besides, it was observed that the coating presents bistable magnetic features when cooled under zero field conditions as a result of the unusual exchange coupling.
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipUnión Europea. H2020
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN)/ FEDER
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN)
dc.description.sponsorshipComunidad de Madrid
dc.description.sponsorshipConsejo Superior de Investigaciones Científicas (CSIC)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/55370
dc.identifier.doi10.1016/j.matdes.2019.107691
dc.identifier.issn0264-1275
dc.identifier.officialurlhttp://dx.doi.org/10.1016/j.matdes.2019.107691
dc.identifier.relatedurlhttps://www.sciencedirect.com
dc.identifier.urihttps://hdl.handle.net/20.500.14352/13323
dc.journal.titleMaterials and design
dc.language.isoeng
dc.publisherElsevier Science
dc.relation.projectIDLEIT-NMBP/0248
dc.relation.projectIDCTQ2015-65918-R
dc.relation.projectID(MAT2012-37109-C02; MAT2012-37109-C01; MAT2017-86540-C4-1-R)
dc.relation.projectIDNANOFRONTMAG-CM (S2013/MIT-2850); NANOMAGCOST-CM(P2018/NMT-4321)
dc.relation.projectIDPIE 201760E002
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.cdu538.9
dc.subject.keywordLength scales
dc.subject.keywordThin-films
dc.subject.keywordNanoparticles
dc.subject.keywordAnisotropy
dc.subject.keywordAntidot
dc.subject.keywordCo
dc.subject.keywordPorous
dc.subject.keywordDouble loop
dc.subject.keywordExchange bias
dc.subject.ucmFísica de materiales
dc.subject.ucmFísica del estado sólido
dc.subject.unesco2211 Física del Estado Sólido
dc.titleExchange bias and two steps magnetization reversal in porous Co/CoO layer
dc.typejournal article
dc.volume.number171
dspace.entity.typePublication
relation.isAuthorOfPublication930014e1-7363-41d3-b971-b824e05f84b2
relation.isAuthorOfPublication.latestForDiscovery930014e1-7363-41d3-b971-b824e05f84b2

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