Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/43501
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dc.contributor.authorLin, K.W.en_US
dc.contributor.author林克偉zh_TW
dc.contributor.authorGuo, J.Y.en_US
dc.contributor.authorChen, T.J.en_US
dc.contributor.authorOuyang, H.en_US
dc.contributor.authorVass, E.en_US
dc.contributor.authorvan Lierop, J.en_US
dc.date2008zh_TW
dc.date.accessioned2014-06-06T08:10:58Z-
dc.date.available2014-06-06T08:10:58Z-
dc.identifier.issn0021-8979zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/43501-
dc.description.abstractThe exchange bias field dependence on the Mn-oxide and its microstructure in NiFe/Mn-oxide bilayers was investigated. Transmission electron microscopy results have shown that the bilayer bottom consisted of either alpha-Mn, rocksalt MnO, or a composite of tetragonal Mn(3)O(4)+MnO, depending on the ratio of O(2)/Ar used during dual ion-beam deposition. Magnetometry results at 5 K indicate that the exchange bias field (H(ex)similar to-300 Oe) is largest in a NiFe/Mn (0%O(2)/Ar) bilayer. The MnO formation by in situ Mn oxidation results in a decrease in H(ex) in a NiFe/Mn-oxide (21%O(2)/Ar) bilayer. In contrast, a further increase in the O(2)/Ar ratio during deposition results in larger H(ex) and H(c). This is attributed to the oxidation of MnO into a harder ferrimagnet, Mn(3)O(4). Our results indicate that the antiferromagnetic Mn enabled stronger coupling with NiFe than MnO. In addition, we find that the MnO-Mn(3)O(4) coupling dominates the exchange bias effects at high oxygen concentrations.en_US
dc.language.isoen_USzh_TW
dc.relationJournal of Applied Physicsen_US
dc.relation.ispartofseriesJournal of Applied Physics, Volume 104, Issue 12.en_US
dc.relation.urihttp://dx.doi.org/10.1063/1.3040719en_US
dc.subjectantiferromagnetic materialsen_US
dc.subjectcrystal microstructureen_US
dc.subjectexchangeen_US
dc.subjectinteractions (electron)en_US
dc.subjectferrimagnetic materialsen_US
dc.subjectferromagneticen_US
dc.subjectmaterialsen_US
dc.subjectinterface magnetismen_US
dc.subjectmagnetic anisotropyen_US
dc.subjectmanganeseen_US
dc.subjectcompoundsen_US
dc.subjectoxidationen_US
dc.subjectPermalloyen_US
dc.subjecttransmission electron microscopyen_US
dc.subjectnanoparticlesen_US
dc.subjectmn3o4en_US
dc.titleCorrelating exchange bias with magnetic anisotropy in ion-beam bombarded NiFe/Mn-oxide bilayersen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1063/1.3040719zh_TW
item.cerifentitytypePublications-
item.grantfulltextnone-
item.languageiso639-1en_US-
item.fulltextno fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeJournal Article-
Appears in Collections:材料科學與工程學系
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