Title :
Enhancement of room temperature-exchange biasing in specular spin valves
Author :
Doi, Masaaki ; Izumi, Masato ; Endo, Hiroaki ; Fuke, Hiromi Niu ; Iwasaki, Hitoshi ; Sahashi, Masashi
Author_Institution :
Dept. of Electron. Eng., Tohoku Univ., Sendai, Japan
Abstract :
The exchange bias properties of the Co1-xFex natural-oxidized nano-oxide layer (NOL) in the specular spin valve system are investigated. The exchange bias energy (Jex) increased with the Fe content of the CoFe NOL. This result suggests that the enhancement of the pinning field/energy at room temperature was induced by the inserted NOL into the pinned layer. The enhancement of both the magnetoresistance ratio and the exchange bias field was realized by increasing the Fe content in the Co1-xFex NOL.
Keywords :
copper alloys; giant magnetoresistance; spin valves; GMR; NOL; exchange bias property; exchange coupling; giant magnetoresistance; magnetoresistance ratio; nano-oxide layer; pinned layer; pinning field; specular spin valves; Giant magnetoresistance; Iron; Magnetic fields; Magnetic properties; Magnetization; Material storage; Nanoscale devices; Oxidation; Spin valves; Temperature; Exchange coupling; giant magnetoresistance (GMR); nano-oxide layer (NOL); specular reflection; spin valves;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855315
