Eddy current effects on the high density magnetic recording system

Author

Park, Gwan Soo ; Won, Hyuk

Author_Institution

Dept. of Electr. Eng., Pusan Nat. Univ., Busan

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

775

Lastpage

778

Abstract

The frequency of the recording current and the rotating speed of the recording media are increased for the high densities in perpendicular magnetic recording system with high conductive pole tip head and soft magnetic under-layer. In this paper, the frequency induced eddy current and velocity induced eddy currents are analyzed by nonlinear three-dimensional finite element analysis. It turns out that the frequency induced eddy current decreases the amplitude of the recording fields, whereas the velocity induced eddy current only distorts the distribution of the recording fields in the recording media

Keywords

eddy currents; finite element analysis; perpendicular magnetic recording; 3D finite element analysis; eddy currents; magnetic recording head; perpendicular recording system; pole tip head; Conductivity; Disk recording; Eddy currents; Finite element methods; Frequency; Magnetic analysis; Magnetic fields; Magnetic heads; Magnetic recording; Perpendicular magnetic recording; Eddy current; finite element analysis; magnetic recording head; perpendicular recording system; pole tip head;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.872484

Filename

1608321