Title :
MOKE and AMR investigations on exchange bias field strength and direction in ferromagnet/antiferromagnet systems
Author :
Barholz, Kai-Uwe ; Mattheis, Roland
Author_Institution :
Inst. for Phys. High Technol., Jena, Germany
fDate :
9/1/2002 12:00:00 AM
Abstract :
Ferromagnet/antiferromagnet (F/AF) systems are analyzed in terms of an extended Stoner-Wohlfarth model. The calculations are compared with measurements of the anisotropic magnetoresistance (AMR). The exchange bias field strength can be directly derived. Asymmetries of the AMR curves give clues to the different orientations of the uniaxial and unidirectional anisotropy. The large influence of uniaxial anisotropy on the reversal of F/AF systems is shown.
Keywords :
Kerr magneto-optical effect; exchange interactions (electron); interface magnetism; magnetic anisotropy; magnetisation reversal; magnetoresistance; Stoner-Wohlfarth model; anisotropic magnetoresistance; exchange bias direction; exchange bias field strength; ferromagnet/antiferromagnet system; magnetization reversal; magneto-optical Kerr effect; uniaxial anisotropy; unidirectional anisotropy; Anisotropic magnetoresistance; Antiferromagnetic materials; Coils; Electrical resistance measurement; Giant magnetoresistance; Kerr effect; Magnetic anisotropy; Magnetic field measurement; Perpendicular magnetic anisotropy; Rotation measurement;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.803160
