Magnetization reversal in AFC media

Author

Wu, Jing ; Dutson, J. ; Grady, K.O.

Author_Institution

Dept. of Phys., York Univ., UK

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

1943

Lastpage

1945

Abstract

In this paper, we report on a study of magnetization reversal processes in antiferromagnetically coupled media. We describe the reversal in terms of the reversible and irreversible susceptibility that has been measured for the CoCrPtB system of fixed-recording layer thickness and variable-stabilization layer thickness. We find that very thin stabilization layers do not couple strongly to the recording layer, and that for Mrt greater than 0.11 memu/cm², some of the change in magnetization becomes irreversible.

Keywords

antiferromagnetic materials; boron alloys; chromium alloys; cobalt alloys; magnetic multilayers; magnetic recording; magnetic susceptibility; magnetic switching; magnetisation reversal; platinum alloys; ruthenium; CoCrPtB-Ru-CoCrPtB; CoCrPtB/Ru/CoCrPtB antiferromagnetically coupled media; fixed-recording layer thickness; irreversible susceptibility; magnetization reversal processes; reversible susceptibility; switching field distribution; variable-stabilization layer thickness; Antiferromagnetic materials; Automatic frequency control; Couplings; Giant magnetoresistance; Magnetic anisotropy; Magnetic multilayers; Magnetic recording; Magnetic separation; Magnetization reversal; Perpendicular magnetic anisotropy;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802849

Filename

1042052