Asymmetric Magnetization Reversal in IrMn/CoFe/FeO rm X/CoFe Structures

We analyzed anisotropy in IrMn/CoFe/FeO X /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 c...

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Bibliographic Details
Published inIEEE transactions on magnetics Vol. 42; no. 10; pp. 2978 - 2980
Main Authors Hsu, P.-C., Lai, C.-H., Huang, P.H., Shen, C.-T., Wang, Y.-H.
Format Journal Article
LanguageEnglish
Published IEEE 01.10.2006
Subjects
Anisotropic magnetoresistance
Asymmetry
biquadratic anisotropy
Couplings
Electronics industry
exchange bias
FeO
Industrial electronics
Magnetic analysis
Magnetic anisotropy
Magnetic field measurement
Magnetization reversal
nano-oxide layer (NOL)
Perpendicular magnetic anisotropy
Saturation magnetization
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Summary:We analyzed anisotropy in IrMn/CoFe/FeO X /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
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2006.878413