NDLI: Angular dependence of exchange bias and coercive field in CoFe/MnIr epitaxial bilayers

Content Provider	IEEE Xplore Digital Library
Author	Dong Young Kim Cheol Gi Kim Chong-Oh Kim Shibata, M. Tsunoda, M. Takahashi, M.
Copyright Year	1965
Abstract	We have measured the hysteresis loop and torque curves at various applied magnetic field angle in CoFe/MnIr epitaxial bilayers on single crystal MgO [001], (111), and (011) samples. The [001] samples show double shifted magnetization curves, which are dominant as the MnIr thickness increases. It suggests that the unidirectional anisotropy and cubic anisotropy of CoFe [001] layer plays a key role in the formation of double shifted magnetization reversal. The angular variation of exchange bias (Hex) and coercive field (Hc) depend on the orientation of MgO substrates. The measured results are compared with calculated data, which are fitted using the crystalline anisotropy, unidirectional and uniaxial anisotropy induced by the field annealing. The calculated Hex and Hc as a function of measuring angles show similar trend as the measured ones. Theses energy contributions play an essential role in the angle dependent magnetization process in epitaxial CoFe/MnIr bilayers.
Sponsorship	IEEE Magnetics Society
Starting Page	2712
Ending Page	2714
Page Count	3
File Size	307984
File Format	PDF
ISSN	00189464
Volume Number	41
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic field measurement Anisotropic magnetoresistance Torque measurement Magnetic hysteresis Magnetization reversal Substrates Crystallization Annealing Goniometers Magnetization processes exchange bias and coercive field Crystalline anisotropy domain pattern epitaxial bilayer
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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