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Anomalous exchange bias behavior in ion-beam bombarded NiCo∕(Ni,Co)O bilayers
- Source :
- Journal of Applied Physics. 103:07C105
- Publication Year :
- 2008
- Publisher :
- AIP Publishing, 2008.
-
Abstract
- 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 O2∕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%O2∕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.
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 103
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........0e55127737d30b040787a4ec6564559d
- Full Text :
- https://doi.org/10.1063/1.2837502