Title :
Resolution improvement of transition width with shielded pole writer
Author :
Xia, Weixing ; Aoi, Hajime ; Muraoka, Hiroaki ; Nakamura, Yoshihisa
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
7/1/2004 12:00:00 AM
Abstract :
The resolution improvement of isolated magnetization transition with shielded pole writer was investigated with a two-dimensional (2-D) finite-element method (FEM) calculation using a media model. Two kinds of single-pole type (SPT) head were used in the calculation. The medium coercivity was varied from 3000 Oe to 9000 Oe. The transition parameter πa was improved from 56.80 nm (Hc=3000 Oe) to 7.14 nm (Hc=9000 Oe) using the regular SPT head, however a significant reduction was achieved from 26.32 nm (Hc=3000 Oe) to 5.26 nm (Hc=9000 Oe) using the front yoke head with high gradient. The recording resolution can be improved with the front yoke head for a large range of media.
Keywords :
finite element analysis; magnetic heads; magnetisation; perpendicular magnetic recording; 2D finite-element method; FEM calculation; field gradient; isolated magnetization transition; media model; medium coercivity; recording resolution; resolution improvement; shielded pole writer; single-pole type head; transition parameter; transition width; yoke head; Anisotropic magnetoresistance; Coercive force; Finite element methods; Magnetic heads; Magnetic hysteresis; Magnetic particles; Magnetic recording; Magnetization; Perpendicular magnetic recording; Two dimensional displays; Field gradient; SPT; head; perpendicular magnetic recording; recording resolution; single-pole type;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.832133
