Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/43504
DC FieldValueLanguage
dc.contributor.authorLin, K.W.en_US
dc.contributor.author林克偉zh_TW
dc.contributor.authorWei, M.R.en_US
dc.contributor.authorGuo, J.Y.en_US
dc.date2009zh_TW
dc.date.accessioned2014-06-06T08:10:58Z-
dc.date.available2014-06-06T08:10:58Z-
dc.identifier.issn1533-4880zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/43504-
dc.description.abstractThe dependence of the cooling field and the ion-beam bombardment on the exchange bias effects in NiFe/(Ni,Fe)O bilayers were investigated. The positive exchange bias was found in the zero-field-cooled (ZFC) process whereas a negative exchange bias occurred in the FC process. The increased exchange field, H(ex) with increasing (Ni,Fe)O thicknesses indicates the thicker the AF (Ni,Fe)O, the stronger the exchange coupling between the NiFe layer and the (Ni,Fe)O layer. In addition, the dependence of the H(ex) (ZFC vs. FC) on the (Ni,Fe)O thicknesses reflects the competition between the applied magnetic field and the (Ni,Fe)O surface layer exchange coupled to the NiFe layer. Further, an unusual oscillating exchange bias was observed in NiFe/(Ni,Fe)O bilayers that results from the surface of the (Ni,Fe)O layer being bombarded with different Ar-ion energies using End-Hall deposition voltages (V(EH)) from 0 to 150 V The behavior of the H(ex) and the H(c) with the V(EH) is attributed to the surface spin reorientation that is due to moderate ion-beam bombardment effects on the surface of the (Ni,Fe)O layer. Whether the (Ni,Fe)O antiferromagnetic spins are coupled to the NiFe moments antiferromagnetically or ferromagnetically changes the sign of the exchange bias.en_US
dc.language.isoen_USzh_TW
dc.relationJournal of Nanoscience and Nanotechnologyen_US
dc.relation.ispartofseriesJournal of Nanoscience and Nanotechnology, Volume 9, Issue 3, Page(s) 2023-2029.en_US
dc.relation.urihttp://dx.doi.org/10.1166/jnn.2009.382en_US
dc.subjectExchange Biasen_US
dc.subjectIon-Beam Bombardmenten_US
dc.subjectmagnetic-propertiesen_US
dc.subjectcomposite filmsen_US
dc.subjectoxide bilayersen_US
dc.subjectirradiationen_US
dc.subjectinterfacesen_US
dc.subjectanisotropyen_US
dc.subjectreversalen_US
dc.subjectfef2-feen_US
dc.titleCooling Field and Ion-Beam Bombardment Effects on Exchange Bias Behavior in NiFe/(Ni,Fe)O Bilayersen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1166/jnn.2009.382zh_TW
item.openairetypeJournal Article-
item.fulltextno fulltext-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.languageiso639-1en_US-
Appears in Collections:材料科學與工程學系
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