Abstract
To confirm the origin of the exchange coupling through the nano-oxide layer (NOL), the detailed analyses of the magnetization curve and the temperature dependence on magnetization for the Co1- xFex-NOL samples with various oxidation processes are investigated. The field cooling effect is observed for NOL-inserted samples, which suggests the existence of the antiferromagnetic (AFM) component in the NOL. The characteristic temperature (blocking temperature) increases with increase in the Fe content for Co1-xFe x(x=0.08,0.17,0.26)-NOL. These results support that NOL pinning appears higher than room temperature. Further, the twisted coupling through the NOL observed for the Co0.50Fe0.50-NOL is discussed from the viewpoint of the magnetic roughness due to the ferrimagnetic nature of the very thin NOL in specular spin valve (SPSV).
Original language | English |
---|---|
Pages (from-to) | 381-386 |
Number of pages | 6 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 287 |
Issue number | SPEC. ISS. |
DOIs | |
Publication status | Published - 2005 Feb 1 |
Keywords
- Exchange coupling
- Nano-oxide layer
- Specular spin valve
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics