Please use this identifier to cite or link to this item: https://doi.org/10.1088/0022-3727/41/13/134014
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dc.titleMagnetostatic and exchange coupling in the magnetization reversal of trilayer nanodots
dc.contributor.authorVavassori, P.
dc.contributor.authorBonanni, V.
dc.contributor.authorBusato, A.
dc.contributor.authorBisero, D.
dc.contributor.authorGubbiotti, G.
dc.contributor.authorAdeyeye, A.O.
dc.contributor.authorGoolaup, S.
dc.contributor.authorSingh, N.
dc.contributor.authorSpezzani, C.
dc.contributor.authorSacchi, M.
dc.date.accessioned2014-10-07T04:32:03Z
dc.date.available2014-10-07T04:32:03Z
dc.date.issued2008-07-07
dc.identifier.citationVavassori, P., Bonanni, V., Busato, A., Bisero, D., Gubbiotti, G., Adeyeye, A.O., Goolaup, S., Singh, N., Spezzani, C., Sacchi, M. (2008-07-07). Magnetostatic and exchange coupling in the magnetization reversal of trilayer nanodots. Journal of Physics D: Applied Physics 41 (13) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/0022-3727/41/13/134014
dc.identifier.issn00223727
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/82665
dc.description.abstractWe present an experimental investigation of the magnetization reversal process in Ni80Fe20(10 nm)/Cu/Co(10 nm) sub-micrometric circular discs for two different thicknesses of the Cu spacer (1 and 10 nm). Magnetic hysteresis loops were measured by the longitudinal magneto-optical Kerr effect and by resonant scattering of polarized soft x-ray. The results for the 10 nm thick Cu interlayer show a complex magnetization reversal process determined by the interplay between the interlayer dipolar interaction and the different reversal nucleation fields in the two layers. It is worth noting that, during the reversal process, the magnetization of the two layers remains in a nearly single domain state due to the dipolar coupling. These findings are confirmed by three-dimensional micromagnetic simulations. In contrast, when the Cu spacer is 1 nm thick both measurements and simulations show that the reversal is accomplished via the formation of a vortex state in both discs due to the presence of a ferromagnetic exchange coupling that competes with the dipolar interaction. © 2008 IOP Publishing Ltd.
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.doi10.1088/0022-3727/41/13/134014
dc.description.sourcetitleJournal of Physics D: Applied Physics
dc.description.volume41
dc.description.issue13
dc.description.page-
dc.description.codenJPAPB
dc.identifier.isiut000256928100022
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