3D analysis of MR readback on perpendicular medium

Author

Bhattacharyya, M.K. ; Tarnopolsky, G.J. ; Tran, L.T.

Author_Institution

Hewlett-Packard Lab., Palo Alto, CA, USA

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

4707

Lastpage

4709

Abstract

A 3-D analysis of magnetoresistive (MR) read on perpendicular media using the reciprocity method is presented. It is shown that the conduction of magnetic flux, obtained from an equivalent reciprocity field, away from the active area is an important phenomenon for this structure, and may introduce error if 2-D analysis is used. The authors examine the effect of shield width and show that when the shield width is equal to the width of the active area of the MR head, 3-D analysis closely resembles the 2-D results. This calculation is extended to a differentially connected dual element MR head for perpendicular recording

Keywords

finite element analysis; hard discs; magnetic heads; magnetic recording; magnetoresistance; 3D analysis; MR readback; differentially connected dual element MR head; equivalent reciprocity field; finite element method; magnetic flux conduction; magnetoresistive head; perpendicular disk; perpendicular medium; perpendicular recording; reciprocity method; shield width effect; Coils; Conductive films; Finite element methods; Integral equations; Magnetic analysis; Magnetic flux; Magnetic heads; Magnetization; Perpendicular magnetic recording; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278922

Filename

278922