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

We analyzed anisotropy in IrMn/CoFe/FeO sub(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 vect...

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Bibliographic Details
Published inIEEE transactions on magnetics Vol. 42; no. 10; p. 2978
Main Authors Hsu, Po-Ching, Lai, Chih-Huang, Huang, Po-Hsiang, Shen, Chih-Ta, Wang, Yung-Hung
Format Journal Article
LanguageEnglish
Published New York The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 01.10.2006
Subjects
Anisotropy
Asymmetry
Coherence
Magnetism
Magnetization reversal
Mathematical analysis
Multilayers
Switching
Vectors (mathematics)
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Summary:We analyzed anisotropy in IrMn/CoFe/FeO sub(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
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ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2006.878413