Title :
Finite-element model analysis of single-pole-type head for 1 Tbit/in2
Author :
Kanai, Yasushi ; Matsubara, Ryo ; Watanabe, Hideaki ; Muraoka, Hiroaki ; Nakamura, Yoshihisa
Author_Institution :
Dept. of Inf. & Electron. Eng., Niigata Inst. of Technol., Kashiwazaki, Japan
Abstract :
A three-dimensional (3-D) FEM simulation of a 1 Tbit/in2 head/medium model has been carried out. Three new structures, side shields, a tapered main pole, and a tapered return path for the head have been introduced in order to produce a large recording field, a small stray field to the adjacent tracks, and a skew-effect-free field distribution, that are all indispensable for higher linear and higher track density recording. The proposed head structure gives sufficient head field strength and gradient for 1 Tbit/in2 recording as described in previous literature, as well as a narrow pulse width.
Keywords :
finite element analysis; magnetic heads; perpendicular magnetic recording; adjacent tracks; finite-element model analysis; higher linear track density recording; higher track density recording; large recording field; narrow pulse width; side shields; single-pole-type head; skew-effect-free field distribution; small stray field; structures; tapered main pole; tapered return path; three-dimensional FEM simulation; Finite element methods; Magnetic heads; Magnetic recording; Parameter estimation; Permeability; Perpendicular magnetic recording; Soft magnetic materials; Space vector pulse width modulation;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.815464
