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Evidence of a barrier oxidation dependence on the interfacial magnetism in Co/alumina based magnetic tunnel junctions

dc.contributor.authorTelling, N.D.en_GB
dc.contributor.authorvan der Laan, Gerriten_GB
dc.contributor.authorLadak, S.en_GB
dc.contributor.authorHicken, R.J.en_GB
dc.contributor.authorArenholz, E.en_GB
dc.date.accessioned2013-01-18T11:14:44Zen_GB
dc.date.accessioned2013-03-20T13:13:12Z
dc.date.issued2006-04-24en_GB
dc.description.abstractSoft x-ray absorption spectroscopy and magnetic circular dichroism at the Co L-2,L-3 edge have been applied to explore the near-interfacial magnetism of Co electrodes in Co/alumina based magnetic tunnel junctions. By taking into account the formation of CoO at the ferromagnetic (FM)/barrier interface, the change in the total magnetic moment on metallic Co atoms as a function of barrier oxidation has been determined. The results demonstrate a strong correlation between the Co moments and measured TMR values, and an enhancement in the Co moments for moderate oxidation times.en_GB
dc.identifier.citationVol. 99 (8), article 08E505en_GB
dc.identifier.doi10.1063/1.2171002en_GB
dc.identifier.urihttp://hdl.handle.net/10036/4176en_GB
dc.language.isoenen_GB
dc.publisherAmerican Institute of Physicsen_GB
dc.subjectroom temperatureen_GB
dc.subjectlarge magnetoresistanceen_GB
dc.subjectcircular dichroismen_GB
dc.subjectcobalten_GB
dc.subjectaluminaen_GB
dc.subjectferromagnetic materialsen_GB
dc.subjectelectrodesen_GB
dc.subjectoxidationen_GB
dc.subjectinterface magnetismen_GB
dc.subjecttunnelling magnetoresistanceen_GB
dc.subjectX-ray absorptionen_GB
dc.subjectmagnetic circular dichroismen_GB
dc.subjectmagnetic momentsen_GB
dc.titleEvidence of a barrier oxidation dependence on the interfacial magnetism in Co/alumina based magnetic tunnel junctionsen_GB
dc.typeArticleen_GB
dc.date.available2013-01-18T11:14:44Zen_GB
dc.date.available2013-03-20T13:13:12Z
dc.identifier.issn0021-8979en_GB
exeter.article-number08E505en_GB
dc.descriptionCopyright © 2006 American Institute of Physicsen_GB
dc.identifier.eissn1089-7550en_GB
dc.identifier.journalJournal of Applied Physicsen_GB


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