Title :
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
fDate :
9/1/1999 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
