Title :
An analysis of the magnetic field of a ring head with a highly permeable underlayer
Author :
Wilton, David T.
Author_Institution :
Dept. of Math. & Stat., Polytech. South West, Plymouth, UK
fDate :
7/1/1991 12:00:00 AM
Abstract :
An idealized mathematical model of the magnetic field due to a ring head with a highly permeable underlayer is solved using Fourier analysis. Accurate Fourier coefficients are derived for a range of gap dimensions. The leading term of the resulting exact series is shown to be equivalent to a previously published approximation, but it is demonstrated that this term alone is not normally sufficient to predict the field accurately.
Keywords :
Fourier analysis; magnetic fields; magnetic heads; Fourier analysis; Fourier coefficients; exact series; gap dimensions; idealized mathematical model; leading term; magnetic field analysis; permeable underlayer; ring head; Conformal mapping; Erbium; Finite difference methods; Integral equations; Laplace equations; Magnetic analysis; Magnetic fields; Magnetic heads; Mathematical model; Perpendicular magnetic recording;
Journal_Title :
Magnetics, IEEE Transactions on
