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Reversal of exchange bias in nanocrystalline antiferromagnetic-ferromagnetic bilayers

TitoloReversal of exchange bias in nanocrystalline antiferromagnetic-ferromagnetic bilayers
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2002
AutoriPrados, C., Pina E., Hernando A., and Montone Amelia
RivistaJournal of Physics Condensed Matter
Volume14
Paginazione10063-10074
ISSN09538984
Parole chiaveAntiferromagnetic materials, Antiferromagnetic-ferromagnetic bilayers, Asymmetric magnetization reversal processes, Atomic force microscopy, Exchange bias, Ferromagnetic materials, Grain boundaries, Ion exchange, Magnetic field effects, Magnetic training processes, Magnetization, Nanostructured materials, Temperature
Abstract

The sign of the exchange bias in field cooled nanocrystalline antiferromagnetic-ferromagnetic bilayers (Co-O and Ni-O/permalloy) is reversed at temperatures approaching the antiferromagnetic (AFM) blocking temperature. A similar phenomenon is observed after magnetic training processes at similar temperatures. These effects can be explained assuming that the boundaries of nanocrystalline grains in AFM layers exhibit lower transition temperatures than grain cores.

Note

cited By 22

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-0037020926&doi=10.1088%2f0953-8984%2f14%2f43%2f305&partnerID=40&md5=4a4710e4e58f6fe91cf18bb9675b4486
DOI10.1088/0953-8984/14/43/305
Citation KeyPrados200210063