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|標題:||Anomalous exchange bias behavior in ion-beam bombarded NiCo/(Ni,Co)O bilayers||作者:||Lin, K.W.
van Lierop, J.
|關鍵字:||irradiation;fef2-fe||Project:||Journal of Applied Physics||期刊/報告no：:||Journal of Applied Physics, Volume 103, Issue 7.||摘要:||
The structural and magnetic properties of NiCo/(Ni,Co)O bilayers were investigated. X-ray diffractometry results have shown that the top NiCo layer consisted of a fcc NiCo phase. The bilayer bottom was either a pure (Ni,Co)O or a composite [NiCo+(Ni,Co)O] phase, depending on the percent of O(2)/Ar ratio used during deposition. A double-shifted hysteresis loop exhibiting components that were from positive or negative coupling was observed in the NiCo/(Ni,Co)O (8%O(2)/Ar) bilayers. The microstructural changes, which result from a combination of deposition oxygen content and the ion-beam bombardment, will result in the unusual exchange bias behavior. (c) 2008 American Institute of Physics.
|Appears in Collections:||材料科學與工程學系|
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