Micromagnetic study of recording process on longitudinal thin-film media

Author

Mochizuki, Masafumi ; Mitsumata, Chiharu ; Yoshida, Kazuetsu ; Nakamura, Atsushi ; Maruyama, Youji ; Takano, Hisashi ; Aoi, Hajime

Author_Institution

Magnetic & Electron. Mater. Res. Lab., Hitachi Metals Ltd., Saitama, Japan

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

2520

Lastpage

2522

Abstract

Through a micromagnetic computer siumlation, we have examined the configuration of magnetic transitions in thin-film recording media. We found that the perpendicular component Hz of head field significantly affects the bending of the magnetization transition. Specifically, the bending is dominated by the ratio between the in-plane component of the head field Hxy and the head-field angle, which is given by φ=atan(Hz/Hxy). This indicates that the reduction of Hz will help enable a straight magnetization transition and higher areal density

Keywords

magnetic heads; magnetic thin film devices; magnetic transitions; perpendicular magnetic recording; areal density; bending; head field; head-field angle; in-plane component; longitudinal thin-film media; magnetic transitions; micromagnetic study; perpendicular component; recording process; Laboratories; Magnetic flux; Magnetic flux density; Magnetic heads; Magnetic materials; Magnetization; Micromagnetics; Perpendicular magnetic recording; Space vector pulse width modulation; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800878

Filename

800878