Dynamic response of exchange bias in graphene nanoribbons

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dc.citation.articleNumber142402
dc.citation.journalTitleApplied Physics Letters
dc.citation.volumeNumber101
dc.contributor.authorJammalamadaka, S. Narayana
dc.contributor.authorRao, S.S.
dc.contributor.authorVanacken, J.
dc.contributor.authorMoshchalkov, V.V.
dc.contributor.authorLu, Wei
dc.contributor.authorTour, J.M.
dc.contributor.orgSmalley Institute for Nanoscale Science and Technology
dc.date.accessioned2016-06-08T16:16:52Z
dc.date.available2016-06-08T16:16:52Z
dc.date.issued2012
dc.description.abstractThe dynamics of magnetic hysteresis, including the training effect and the field sweep rate dependence of the exchange bias, is experimentally investigated in exchange-coupled potassium split graphenenanoribbons (GNRs). We find that, at low field sweep rate, the pronounced absolute training effect is present over a large number of cycles. This is reflected in a gradual decrease of the exchange bias with the sequential field cycling. However, at high field sweep rate above 0.5 T/min, the training effect is not prominent. With the increase in field sweep rate, the average value of exchange bias field grows and is found to follow power-law behavior. The response of the exchange bias field to the field sweep rate variation is linked to the difference in the time it takes to perform a hysteresis loop measurement compared with the relaxation time of the anti-ferromagnetically aligned spins. The present results may broaden our current understanding of magnetism of GNRs and would be helpful in establishing the GNRs-based spintronic devices.
dc.identifier.citationJammalamadaka, S. Narayana, Rao, S.S., Vanacken, J., et al.. "Dynamic response of exchange bias in graphene nanoribbons." <i>Applied Physics Letters,</i> 101, (2012) American Institute of Physics: http://dx.doi.org/10.1063/1.4755840.
dc.identifier.doihttp://dx.doi.org/10.1063/1.4755840
dc.identifier.urihttps://hdl.handle.net/1911/90467
dc.language.isoeng
dc.publisherAmerican Institute of Physics
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Institute of Physics.
dc.subject.keyworddynamic magnetic properties
dc.subject.keywordexchange bias
dc.subject.keywordtraining effect
dc.subject.keywordfield sweep rate and graphene nanoribbons
dc.titleDynamic response of exchange bias in graphene nanoribbons
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpost-print
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