DocumentCode
1190076
Title
Exchange bias model in ferromagnetic/antiferromagnetic bilayer with L12-type ordered antiferromagnet
Author
Mitsumata, C. ; Sakuma, A. ; Fukamichi, K.
Author_Institution
Adv. Electron. Res. Lab., Hitachi Metals Ltd, Kumagaya, Japan
Volume
41
Issue
10
fYear
2005
Firstpage
2700
Lastpage
2702
Abstract
The exchange bias of the ferromagnetic (FM) and antiferromagnetic (AFM) bilayer having L12-type ordered structure has been investigated within the framework of Heisenberg model. The triangle lattice of magnetic atoms in the AFM layer realizes the triangular spin structure due to geometrical spin frustrations. This noncollinear spin structure can bring about an exchange bias in the FM/AFM bilayer system. Under the influence of the exchange bias, the uncompensated spin element appears in the AFM layer, resulting in a shifted loop in magnetization curves, in accord with the measured loop by X-ray magnetic circular dichroism spectroscopy for an AFM layer.
Keywords
antiferromagnetic materials; exchange interactions (electron); ferromagnetic materials; magnetic circular dichroism; magnetic multilayers; Heisenberg model; X-ray magnetic circular dichroism spectroscopy; antiferromagnet; antiferromagnetic bilayer; exchange bias model; ferromagnetic bilayer; geometrical spin frustration; magnetic atoms; magnetization curves; ordered structure; triangle lattice; triangular spin structure; Anisotropic magnetoresistance; Antiferromagnetic materials; Atomic layer deposition; Lattices; Magnetic anisotropy; Magnetic domains; Manganese alloys; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Soft magnetic materials; Antiferromagnetic (AFM); Heisenberg model; exchange bias; exchange coupling; noncollinear spin; spin frustration; spin structure;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2005.855223
Filename
1519093
Link To Document