Large magnetoelectric coupling in nanoscale BiFeO3 from direct electrical measurements

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dc.contributor.authorGoswami, Sudipta
dc.contributor.authorBhattacharya, Dipten
dc.contributor.authorKeeney, Lynette
dc.contributor.authorMaity, Tuhin
dc.contributor.authorKaushik, S. D.
dc.contributor.authorSiruguri, V.
dc.contributor.authorDas, Gopes C.
dc.contributor.authorYang, Haifang
dc.contributor.authorLi, Wuxia
dc.contributor.authorGu, Chang-zhi
dc.contributor.authorPemble, Martyn E.
dc.contributor.authorRoy, Saibal
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderCouncil of Scientific and Industrial Research, Indiaen
dc.date.accessioned2016-07-22T13:54:26Z
dc.date.available2016-07-22T13:54:26Z
dc.date.issued2014-09-02
dc.date.updated2014-09-03T10:22:19Z
dc.description.abstractWe report the results of direct measurement of remanent hysteresis loops on nanochains of BiFeO3 at room temperature under zero and ∼20 kOe magnetic field. We noticed a suppression of remanent polarization by nearly ∼40% under the magnetic field. The powder neutron diffraction data reveal significant ion displacements under a magnetic field which seems to be the origin of the suppression of polarization. The isolated nanoparticles, comprising the chains, exhibit evolution of ferroelectric domains under dc electric field and complete 180 switching in switching-spectroscopy piezoresponse force microscopy. They also exhibit stronger ferromagnetism with nearly an order of magnitude higher saturation magnetization than that of the bulk sample. These results show that the nanoscale BiFeO3 exhibits coexistence of ferroelectric and ferromagnetic order and a strong magnetoelectric multiferroic coupling at room temperature comparable to what some of the type-II multiferroics show at a very low temperature.en
dc.description.sponsorshipScience Foundation Ireland (SFI Principal Investigator (PI) Project No. 11/PI/1201, SFI FORME Strategic Research Cluster Award No. 07/SRC/I1172, ISCA grant (SFI: 12/ISCA/2493)); Indo-Ireland joint program (DST/INT/IRE/P-15/11); Council of Scientific and Industrial Research, India (CSIR Research Associateship)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid104402
dc.identifier.citationGoswami, S., Bhattacharya, D., Keeney, L., Maity, T., Kaushik, S. D., Siruguri, V., Gopes D. C., Yang, H., Li, W., Gu, C., Pemble, M. E., Roy, S. (2014) 'Large magnetoelectric coupling in nanoscale BiFeO3 from direct electrical measurements', Physical Review B, 90, 104402. http://link.aps.org/doi/10.1103/PhysRevB.90.104402en
dc.identifier.doi10.1103/PhysRevB.90.104402
dc.identifier.endpage104402 (7)en
dc.identifier.issn2469-9950
dc.identifier.issn2469-9969
dc.identifier.journaltitlePhysical Review Ben
dc.identifier.startpage104402 (1)en
dc.identifier.urihttps://hdl.handle.net/10468/2929
dc.identifier.volume90en
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.urihttp://journals.aps.org/prb/pdf/10.1103/PhysRevB.90.104402
dc.rights© 2014 American Physical Society.en
dc.subjectCapacitorsen
dc.subjectFilmsen
dc.subjectNanochainsen
dc.subjectferromagnetismen
dc.subjectMultiferroic couplingen
dc.titleLarge magnetoelectric coupling in nanoscale BiFeO3 from direct electrical measurementsen
dc.typeArticle (peer-reviewed)en
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