Title :
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
fDate :
4/1/2006 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.872484
