Dynamic response of exchange bias in graphene nanoribbons

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dc.citation.articleNumber142402en_US
dc.citation.journalTitleApplied Physics Lettersen_US
dc.citation.volumeNumber101en_US
dc.contributor.authorJammalamadaka, S. Narayanaen_US
dc.contributor.authorRao, S.S.en_US
dc.contributor.authorVanacken, J.en_US
dc.contributor.authorMoshchalkov, V.V.en_US
dc.contributor.authorLu, Weien_US
dc.contributor.authorTour, J.M.en_US
dc.contributor.orgSmalley Institute for Nanoscale Science and Technologyen_US
dc.date.accessioned2016-06-08T16:16:52Zen_US
dc.date.available2016-06-08T16:16:52Zen_US
dc.date.issued2012en_US
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.en_US
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.en_US
dc.identifier.doihttp://dx.doi.org/10.1063/1.4755840en_US
dc.identifier.urihttps://hdl.handle.net/1911/90467en_US
dc.language.isoengen_US
dc.publisherAmerican Institute of Physicsen_US
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.en_US
dc.subject.keyworddynamic magnetic propertiesen_US
dc.subject.keywordexchange biasen_US
dc.subject.keywordtraining effecten_US
dc.subject.keywordfield sweep rate and graphene nanoribbonsen_US
dc.titleDynamic response of exchange bias in graphene nanoribbonsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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