Magnetic properties and switching field control of antiferromagnetically coupled recording media

Author

Piramanayagam, S.N. ; Wang, J.P. ; Shi, X. ; Pang, S.I. ; Pock, C.K. ; Shan, Z.S. ; Chong, T.C.

Author_Institution

Data Storage Inst., Singapore

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1438

Lastpage

1440

Abstract

Recently proposed antiferromagnetic-coupled (AFC) media is studied in detail. The parameters, which control the switching field of the stabilizing layer and hence, the M_rδ reduction are understood by theory and experiment. It was observed that the switching field of the stabilizing layer could be controlled by experimental parameters to be on either side of remanence. M_rδ reduction could be achieved by a reduction of anisotropy constant, thickness or magnetization of the stabilizing layer. The coercivity and thermal stability of the AFC media is larger than that of a single magnetic layer

Keywords

coercive force; magnetic anisotropy; magnetic recording; magnetic switching; magnetic thin films; remanence; thermal stability; anisotropy constant; antiferromagnetically coupled medium; coercivity; magnetic properties; magnetic recording; magnetization; remanence; stabilizing layer; switching field control; thermal stability; Anisotropic magnetoresistance; Antiferromagnetic materials; Automatic frequency control; Coercive force; Magnetic anisotropy; Magnetic properties; Magnetic switching; Magnetization; Remanence; Thermal stability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.950864

Filename

950864