Approximate Fourier coefficients for gapped magnetic recording heads

Author

Shute, Hazel A. ; Wilton, David T. ; Mapps, Desmond J.

Author_Institution

Sch. of Math. & Stat., Univ. of Plymouth, UK

Volume

35

Issue

4

fYear

1999

fDate

7/1/1999 12:00:00 AM

Firstpage

2180

Lastpage

2186

Abstract

An investigation is presented of the number of exact Fourier terms needed to evaluate the field components of a ring head, a slotted plane, and planar heads of various dimension ratios to specified accuracy. Simple approximate formulas for the coefficients of a ring head and a slotted plane are given, and two approximations to the coefficients of a planar head of given dimensions are provided. The accuracy of the field components and the spectral response function, each evaluated with the approximate coefficients, is used to assess the usefulness of these approximations. Both of the approximations for the coefficients of planar heads lead to excellent estimates of the field components

Keywords

Fourier analysis; digital magnetic recording; magnetic fields; magnetic heads; approximate Fourier coefficients; field components; gapped magnetic recording heads; planar heads; ring head; slotted plane; spectral response function; Conformal mapping; Digital recording; Geometry; Helium; Magnetic analysis; Magnetic heads; Magnetic recording; Magnetic separation; Mathematics; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.774191

Filename

774191