Role of M-H loop slope of media for recording properties in perpendicular magnetic recording

Author

Honda, N. ; Kiya, T. ; Ariake, J. ; Ouchi, K. ; Iwasaki, S.

Author_Institution

Akita Res. Inst. of Adv. Technol., Japan

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2030

Lastpage

2032

Abstract

Perpendicular magnetic recording media with a high resolution and a low noise property were studied using a micromagnetic simulation. It was suggested that the introduction of a small separation between the adjacent grains is effective to obtain such media increasing the perpendicular M-H loop slope without increasing the domain size. The separation is thought to reduce the demagnetizing field acting on the magnetic grains increasing the M-H loop slope of the grains.

Keywords

demagnetisation; exchange interactions (electron); magnetic domains; magnetic hysteresis; magnetic recording noise; perpendicular magnetic recording; M-H loop slope; demagnetizing field; domain size; exchange coupling; high resolution; low noise property; magnetic grains; micromagnetic simulation; perpendicular magnetic recording media; small grain separation; Couplings; Magnetic domains; Magnetic noise; Magnetic properties; Magnetic recording; Magnetic separation; Micromagnetics; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Saturation magnetization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.801821

Filename

1042080