DocumentCode
1096958
Title
Cylindrical domains in small ferromagnetic spheres with cubic anisotropy
Author
Aharoni, Amikam ; Jakubovics, J.P.
Author_Institution
Dept. of Electron., Weizmann Inst., Rehovoth, Israel
Volume
24
Issue
2
fYear
1988
fDate
3/1/1988 12:00:00 AM
Firstpage
1892
Lastpage
1894
Abstract
Magnetization configurations are computed for small ferromagnetic spheres with cubic anisotropy. A cylindrically symmetrical configuration is found, which has a lower energy than a single domain, for a sphere radius larger than about 27.7 nm, for cubic cobalt. In magnetite, the changeover from a single domain to the cylindrical configuration is at a radius of about 27.0 nm. This problem has been studied particularly for cubic iron oxides, used in magnetic recording.
Keywords
ferromagnetism; magnetic domains; magnetic properties of fine particles; magnetisation; Co; FeOx; cubic anisotropy; cylindrical domains; cylindrically symmetrical configuration; energy; magnetisation configurations; magnetite; single domain; small ferromagnetic spheres; Anisotropic magnetoresistance; Cobalt; Inorganic materials; Magnetic anisotropy; Magnetic domains; Magnetic materials; Magnetic separation; Magnetostatics; Perpendicular magnetic anisotropy; Saturation magnetization;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.11637
Filename
11637
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