A theoretical analysis of shielded magnetoresistive heads by conformal mapping

Author

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

Author_Institution

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

Volume

33

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

809

Lastpage

819

Abstract

A new theoretical analysis of an asymmetrically shielded magnetoresistive sensor in the presence of a high-permeability underlayer is obtained by conformal mapping. The symmetrically shielded head is a special case. The solution also covers recessed sensors, and can be extended to the no underlayer situation. Head fields, spectral response functions, phase, dibit shift, and roll-off results for various head configurations are provided and discussed

Keywords

magnetic fields; magnetic heads; magnetic sensors; magnetic shielding; magnetic thin film devices; magnetoresistive devices; perpendicular magnetic recording; asymmetrically shielded magnetoresistive sensor; conformal mapping analysis; dibit shift; head configurations; head fields; high-permeability underlayer; perpendicular medium; phase; recessed sensors; roll-off results; shielded magnetoresistive heads; spectral response functions; symmetrically shielded head; underlayer removal; Conformal mapping; Demagnetization; Finite element methods; Magnetic analysis; Magnetic heads; Magnetic sensors; Magnetic shielding; Magnetoresistance; Permeability; Transmission line theory;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.560116

Filename

560116