Magnetization behavior in exchange-coupled Co/TbFeCo films

Author

Matsubara, N. ; Sai, F. ; Wakabayashi, H. ; Notarys, H. ; Suzuki, T.

Author_Institution

IBM Tokyo Res. Lab., Japan

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

1906

Lastpage

1908

Abstract

The magnetization behavior in exchange-coupled Co/TbFeCo films with various Co thicknesses, as investigated by a vectorial vibrating sample magnetometer, is discussed. For the TbFeCo layer with 95-Å thickness, the critical thickness of a Co layer below which the Co moment is coupled with the TbFeCo moment to align along the film normal is found to be about 23-Å. This result is consistent with that previously found. It was found that an easy axis tilt from the film normal of even a few degrees plays an important role in the magnetization reversal where the Co and TbFeCo moments are decoupled for thick Co layer cases

Keywords

cobalt alloys; iron alloys; magnetic moments; magnetic thin films; magnetisation reversal; magneto-optical recording; magnetometers; terbium alloys; Co moment; Co thicknesses; TbFeCo films; critical thickness; easy axis tilt; magnetization reversal; magneto-optical recording; vectorial vibrating sample magnetometer; Coercive force; Couplings; Magnetic films; Magnetization; Magnetometers; Magnetooptic effects; Magnetooptic recording; Optical films; Perpendicular magnetic anisotropy; Perpendicular magnetic recording;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104565

Filename

104565