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Phase separation enhanced magneto-electric coupling in La_(0.7)Ca_(0.3)MnO_(3)/BaTiO_(3) ultra-thin films

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dc.contributor.authorAlberca, A.
dc.contributor.authorMunuera, C.
dc.contributor.authorAzpeitia, J.
dc.contributor.authorKirby, B.
dc.contributor.authorNemes, Norbert Marcel
dc.contributor.authorPérez Muñoz, Ana Mª
dc.contributor.authorTornos, J.
dc.contributor.authorMompean, F. J.
dc.contributor.authorLeón Yebra, Carlos
dc.contributor.authorSantamaría Sánchez-Barriga, Jacobo
dc.contributor.authorGarcía Hernández, M.
dc.date.accessioned2023-06-18T06:49:31Z
dc.date.available2023-06-18T06:49:31Z
dc.date.issued2015-12-09
dc.descriptionThe authors are grateful to Julie Borchers and Chuck Majkrzak for stimulating discussions. The authors acknowledge financial support from the Spanish MICINN and MINECO through grants MAT2011-27470-C02-01, MAT2011-27470 C02-02, MAT2014-52405-C2-2-R, MAT2014-52405-C2-1R and CSD 2009-00013.
dc.description.abstractWe study the origin ofthe magnetoelectric coupling in manganite films on ferroelectric substrates. We find large magnetoelectric coupling in La_(0.7)Ca_(0.3)MnO_(3)/BaTiO_(3) ultra thin films in experiments based on the converse magnetoelectric effect.The magnetization changes by around 30–40% upon applying electric fields on the order of 1kV/cm to the BaTiO_(3) substrate, corresponding to magnetoelectric coupling constants on the order of α=(2–5)·10−7 s/m. Magnetic anisotropy is also affected by the electric field induced strain, resulting in a considerable reduction of coercive fields.We compare the magnetoelectric effectin pre-poled and unpoled BaTiO_(3) substrates. Polarized neutron reflectometry reveals a two-layer behavior with a depressed magnetic layer of around 30Å atthe interface. Magnetic force microscopy (MFM) shows a granular magnetic structure of the La0.7Ca0.3MnO3.The magnetic granularity of the La_(0.7)Ca_(0.3)MnO_(3) film and the robust magnetoelastic coupling at the La_(0.7)Ca_(0.3)MnO_(3)/BaTiO_(3) interface are at the origin of the large magnetoelectric coupling, which is enhanced by phase separation in the manganite.
dc.description.departmentDepto. de Estructura de la Materia, Física Térmica y Electrónica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN)
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/35323
dc.identifier.doi10.1038/srep17926
dc.identifier.issn2045-2322
dc.identifier.officialurlhttp://dx.doi.org/10.1038/srep17926
dc.identifier.relatedurlhttp://www.nature.com/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/24317
dc.journal.titleScientific reports
dc.language.isoeng
dc.publisherNature publishing group
dc.relation.projectIDMAT2011-27470-C02-01
dc.relation.projectIDMAT2011- 27470-C02-02
dc.relation.projectIDMAT2014-52405-C2-2-R
dc.relation.projectIDMAT2014-52405-C2-1R
dc.relation.projectIDCSD-2009-00013
dc.rightsAtribución 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/es/
dc.subject.cdu537
dc.subject.keywordStrain
dc.subject.keywordHeterostructures
dc.subject.keywordManganites
dc.subject.keywordBehavior.
dc.subject.ucmElectricidad
dc.subject.ucmElectrónica (Física)
dc.subject.unesco2202.03 Electricidad
dc.titlePhase separation enhanced magneto-electric coupling in La_(0.7)Ca_(0.3)MnO_(3)/BaTiO_(3) ultra-thin films
dc.typejournal article
dc.volume.number5
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