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

Volume

41

Issue

10

fYear

2005

Firstpage

2932

Lastpage

2934

Abstract

The exchange bias properties of the Co_1-xFe_x natural-oxidized nano-oxide layer (NOL) in the specular spin valve system are investigated. The exchange bias energy (J_ex) 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 Co_1-xFe_x 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.855315

Filename

1519165