Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/43498
DC FieldValueLanguage
dc.contributor.authorvan Lierop, J.en_US
dc.contributor.author林克偉zh_TW
dc.contributor.authorLin, K.W.en_US
dc.contributor.authorOuyang, H.en_US
dc.contributor.authorTzeng, Y.M.en_US
dc.contributor.authorGuo, Z.Y.en_US
dc.date2006zh_TW
dc.date.accessioned2014-06-06T08:10:57Z-
dc.date.available2014-06-06T08:10:57Z-
dc.identifier.issn0021-8979zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/43498-
dc.description.abstractWe present results on a Ni80Fe20/NixFe1-xO thin-film bilayer that shows a positive exchange bias loop shift of similar to 90 Oe at 10 K under zero-field-cooled conditions. Zero-field-cooled and field-cooled hysteresis loops were double shifted at temperatures below 200 K. This behavior is due to the presence of a range of antiferromagnetic crystallite sizes in addition to multiple magnetic phases (e.g., FeO, Fe2O3, and NiO). Furthermore, the positive exchange bias loop shift decreases linearly with increasing temperature, with a compensation temperature T-comp similar to 220 K, after which negative exchange bias is measured. This temperature dependence of the exchange bias reflects the competition between the Ni80Fe20 ferromagnet and antiferromagnetic Fe oxide and NiO phases as well as a range of local blocking temperatures. We attribute the appearance of a positive exchange bias loop shift at low temperatures to temperature-dependent changes in the interfacial pinning and exchange coupling due to a complex NixFe1-xO structure from energetic ion-beam bombardment effects during the film deposition. (C) 2006 American Institute of Physics.en_US
dc.language.isoen_USzh_TW
dc.relationJournal of Applied Physicsen_US
dc.relation.ispartofseriesJournal of Applied Physics, Volume 99, Issue 8.en_US
dc.relation.urihttp://dx.doi.org/10.1063/1.2162034en_US
dc.titleAnomalous positive exchange bias in Ni80Fe20/NixFe1-xO thin-film bilayers induced by ion-beam deposition effectsen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1063/1.2162034zh_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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