Write field calculation for a narrow-track, single-pole head with a thin underlayer of perpendicular medium

Author

Kanai, Yasushi ; Matsubara, Ryo

Author_Institution

Dept. of Inf. & Electron. Eng., Niigata Inst. of Technol., Kashiwazaki, Japan

Volume

38

Issue

1

fYear

2002

Firstpage

169

Lastpage

174

Abstract

The recording field of a narrow-track, single-pole (SPT) write head with a double-layered medium was investigated using three-dimensional eddy current transient finite element analysis. In the calculations, a soft-magnetic underlayer with a thickness of 100 nm was assumed. The results illustrate a large head field strength at a track width of 100 nm and a large recording field gradient at the trailing edge.

Keywords

eddy currents; finite element analysis; magnetic heads; perpendicular magnetic recording; 100 nm; double-layered medium; head field strength; narrow-track write head; perpendicular medium; recording field; recording field gradient; single-pole head; three-dimensional eddy current analysis; track width; trailing edge; transient finite element analysis; underlayer; write field calculation; Anisotropic magnetoresistance; Delay; Eddy currents; Finite element methods; Frequency response; Magnetic analysis; Magnetic heads; Magnetic materials; Perpendicular magnetic recording; Transient analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.988931

Filename

988931