Analytic and quasi-analytic formulae for MR heads

Author

Shtrikman, Shmuel ; Smith, David R.

Author_Institution

Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA

Volume

32

Issue

1

fYear

1996

fDate

1/1/1996 12:00:00 AM

Firstpage

43

Lastpage

48

Abstract

We present analytic procedures for calculating the magnetostatic and response functions of magnetoresistive (MR) recording heads. To apply these methods we make several simplifying approximations, which have been found to be valid for typical recording head geometries. In particular, we show how to calculate the bias magnetization distribution, ideal transition pulse shape, and frequency response for the unshielded MR (UMR) head. To do this, we summarize methods based on conformal mapping and reciprocity, and present a simpler direct method which produces identical results. We extend this alternate method to find analytic expressions for the saturated bias magnetization

Keywords

frequency response; magnetic heads; magnetic recording; magnetisation; magnetoresistive devices; MR heads; bias magnetization distribution; conformal mapping; frequency response; ideal transition pulse shape; magnetoresistive recording heads; magnetostatic response; reciprocity; response functions; saturated bias magnetization; unshielded MR head; Conformal mapping; Frequency response; Geometry; Magnetic analysis; Magnetic heads; Magnetoresistance; Magnetostatics; Pulse shaping methods; Saturation magnetization; Shape;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.477548

Filename

477548