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

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2767

Lastpage

2769

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.803160

Filename

1042349