DocumentCode
1075519
Title
Magnetism of Co1-xFex-NOL in specular spin-valves
Author
Doi, Masaaki ; Izumi, Masato ; Fuke, Hiromi Niu ; Iwasaki, Hitoshi ; Sahashi, Masashi
Author_Institution
Dept. of Electron. Eng., Tohoku Univ., Sendai, Japan
Volume
40
Issue
4
fYear
2004
fDate
7/1/2004 12:00:00 AM
Firstpage
2263
Lastpage
2265
Abstract
We investigated the magnetic properties of the Co1-xFex-natural oxidized nano-oxide layer (NOL) in the specular spin-valve system by precise measurement of magnetization at 77 K and M-T curves after field cooling at ±5 kOe. The result suggests the antiferromagnetic component behavior of the NOL and its Ne´el temperature (TN) shifts to the higher temperature with increasing Fe composition. Below the TN, the antiparallel spin configuration at the pinned layers is stabilized by the exchange bias field induced from antiferromagnetic component of NOL by the field cooling in negative field direction.
Keywords
amorphous magnetic materials; antiferromagnetic materials; cobalt alloys; exchange interactions (electron); giant magnetoresistance; magnetisation; nanostructured materials; spin valves; 77 K; CoFe; M-T curves; Neel temperature; antiferromagnetic component behavior; antiparallel spin configuration; exchange bias field; exchange coupling; field cooling; giant magnetoresistance; magnetic properties; magnetization measurement; nano-oxide layer; negative field direction; pinned layers; precise measurement; specular reflection; specular spin-valves; Antiferromagnetic materials; Chromium; Couplings; Giant magnetoresistance; Iron; Magnetic multilayers; Magnetic properties; Magnetization; Oxidation; Temperature; Exchange coupling; NOL; giant magnetoresistance; nano-oxide layer; specular reflection; spin-valves;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2004.830407
Filename
1325472
Link To Document