A micromagnetic model of dual-layer magnetic-recording thin films

Author

Oti, John O.

Author_Institution

Nat. Inst. of Stand. & Technol., Boulder, CO, USA

Volume

29

Issue

2

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

1265

Lastpage

1275

Abstract

The micromagnetic model, which is capable of simulating magnetic layers having different magnetic and geometric properties, is applied to the study of the magnetic properties of dual-layer media characterized by a three-dimensional isotropic distribution of anisotropy axes in both layers, using parameters typical of cobalt-alloy films. In the absence of exchange interactions between the layers, a correlation is found between squareness ratios, average magnetostatic energy densities, and structural dimensions of the media. An in-phase magnetization reversal of the layers occurs with increasing interlayer exchange coupling. A complex relationship is found between coercivity and media parameters

Keywords

cobalt alloys; coercive force; exchange interactions (electron); magnetic anisotropy; magnetic film stores; magnetic multilayers; magnetic recording; magnetisation reversal; Co alloy film; anisotropy axes; coercivity; dual-layer magnetic-recording thin films; exchange coupling; geometric properties; in-phase magnetization reversal; magnetic layers; magnetic properties; magnetostatic energy densities; micromagnetic model; squareness ratios; structural dimensions; three-dimensional isotropic distribution; Anisotropic magnetoresistance; Elementary particle exchange interactions; Magnetic anisotropy; Magnetic films; Magnetic properties; Magnetization reversal; Magnetostatics; Micromagnetics; Perpendicular magnetic anisotropy; Solid modeling;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.250631

Filename

250631