Title :
Magnetic field of a thin film head with an underlayer
Author_Institution :
Div. of Gen. Educ., Nat. Taiwan Ocean Univ., Keelung, Taiwan
fDate :
7/1/1994 12:00:00 AM
Abstract :
An exact solution is derived for the first time for the fields of a thin film head with an underlayer. The Fourier analysis is used to determine the distribution of the fringe field components around the head pole, and the accurate Fourier coefficients are evaluated for a range of head geometries. With an underlayer, it is found that the amplitude of vertical field is higher everywhere than that with no underlayer, and the amplitude of horizontal field is lower in the region above the gap and exhibits an enhanced negative lobe near the outer corner of the head pole
Keywords :
Fourier analysis; magnetic heads; magnetic thin film devices; Fourier analysis; Fourier coefficients; fringe field; head pole; horizontal field; magnetic field; thin film head; underlayer; vertical field; Geometry; Integral equations; Laplace equations; Magnetic analysis; Magnetic fields; Magnetic films; Magnetic heads; Magnetic recording; Perpendicular magnetic recording; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
