DocumentCode :
766046
Title :
Asymmetric Magnetization Reversal in IrMn/CoFe/FeO 
/CoFe Structures
/CoFe StructuresAuthor :
Hsu, Po-Ching ; Lai, Chih-Huang ; Huang, Po-Hsiang ; Shen, Chih-Ta ; Wang, Yung-Hung
Author_Institution :
Dept. of Mater. Sci. & Eng., Nat. Tsing Hua Univ., Hsinchu
Volume :
42
Issue :
10
fYear :
2006
Firstpage :
2978
Lastpage :
2980
Abstract :
We analyzed anisotropy in IrMn/CoFe/FeOX/CoFe multilayers with angular remanence measurements. The results showed the coexistence of biquadratic and unidirectional anisotropies. A significantly asymmetric magnetization reversal had been observed. We studied the reversal mechanism by using vector coils and suggested that the switching in the decreasing branch comprised both coherent rotation and 90deg domain wall motion; however, the switching in the increasing branch showed complicated multidomain rotation
Keywords :
cobalt alloys; iridium alloys; iron alloys; magnetic anisotropy; magnetic domain walls; magnetic multilayers; magnetisation reversal; manganese alloys; remanence; IrMn-CoFe-FeOx-CoFe; NOL; angular remanence measurements; asymmetric magnetization reversal; biquadratic anisotropies; complicated multidomain rotation; domain wall motion; exchange bias; magnetic multilayers; nanooxide layer; unidirectional anisotropies; vector coils; Anisotropic magnetoresistance; Couplings; Electronics industry; Industrial electronics; Magnetic analysis; Magnetic anisotropy; Magnetic field measurement; Magnetization reversal; Perpendicular magnetic anisotropy; Saturation magnetization; Asymmetry; FeO; biquadratic anisotropy; exchange bias; magnetization reversal; nano-oxide layer (NOL);
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2006.878413
Filename :
1704502
Link To Document :
