Title :
Analytic field components for perpendicular thin-film recording heads
Author :
Shute, Hazel A. ; Wilton, David T. ; Mapps, Desmond J.
Author_Institution :
Dept. of Math. & Stat., Univ. of Plymouth, UK
fDate :
11/1/2001 12:00:00 AM
Abstract :
Presents a new, entirely analytic solution for the magnetic field of a thin-film head of arbitrary dimensions in the presence of a soft magnetic underlayer. The magnetic potential on each pole is assumed to be a known constant. Fourier coefficients and field components are given for two particular cases of practical interest. The paper demonstrates the accuracy of approximations that require no Fourier coefficients, but that must be evaluated numerically
Keywords :
Laplace equations; digital magnetic recording; magnetic thin film devices; perpendicular magnetic recording; soft magnetic materials; Fourier coefficients; Laplace equations; analytic field components; digital recording; magnetic field; magnetic head fields; magnetic potential; perpendicular thin-film recording heads; pole; soft magnetic underlayer; Geometry; Laplace equations; Magnetic analysis; Magnetic fields; Magnetic films; Magnetic heads; Mathematics; Perpendicular magnetic recording; Soft magnetic materials; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
