High susceptibility domain configuration in micron-sized ferromagnetic stripes

Author

Petek, B. ; Chang, J.W. ; Jahnes, C.V. ; Lo, Julia ; Trouilloud, P.L.

Author_Institution

IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3840

Lastpage

3842

Abstract

The authors report on a newly discovered domain configuration, observed with a magnetooptical microscope, in narrow stripes of NiCoFe, CoFeCu and NiFe. The stripes-1 to 25 μm wide and 0.5 to 2.0 μm thick-are used as a model for a narrow-track pole of a recording head. The new domain configuration, with its magnetization oriented mostly in a plane perpendicular to the long dimension of the stripe, suggests the possibility of obtaining a large high-frequency susceptibility even in recording head poles as a narrow as 1 μm

Keywords

cobalt alloys; copper alloys; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic domain walls; magnetic domains; magnetic heads; magnetic recording; magnetic susceptibility; magnetic thin film devices; magnetic thin films; magnetisation; nickel alloys; 0.5 to 2 micron; 1 to 25 micron; CoFeCu; NiCoFe; NiFe; domain configuration; domain structure; domain walls; high-frequency susceptibility; magnetization; magnetooptical microscope; micron-sized ferromagnetic stripes; narrow-track pole; recording head poles; uniaxial anisotropy; Compressive stress; Magnetic force microscopy; Magnetic heads; Magnetic susceptibility; Magnetization; Magnetooptic recording; Magnetostriction; Micromagnetics; Resists; Substrates;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.281316

Filename

281316