Permanent magnet stabilization of an overlaid MR head

Author

Fernandez-de-Castro, Juan J. ; Machelski, Russell J. ; Swanson, L.G. ; Mowry, G.S.

Author_Institution

Seagate Technol., Minneapolis, MN, USA

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

3386

Lastpage

3388

Abstract

Higher area density in the rigid disk magnetic recording industry is being achieved with magneto-resistive (MR) heads biased with a soft adjacent layer (SAL). The abutted and the overlaid designs are the two approaches most commonly used. Reader stability is a result of a single domain structure due to boundary control stabilization (BCS) from exchange or magnetostatic coupling. The details of a particular design determine on track and off track performance. Recent reviews and products suggest that the magnetostatically coupled abutted head design is superior to published overlaid designs. This paper describes the electrical performance and physical characteristics of another overlaid design that performs on track and off track at the recording density of 650 Mb/in²

Keywords

magnetic heads; magnetoresistive devices; permanent magnets; area density; boundary control stabilization; electrical performance; magnetoresistive head; overlaid MR head; permanent magnet stabilization; reader stability; rigid disk magnetic recording; single domain structure; soft adjacent layer; Conductors; Couplings; Disk recording; Insulation life; Magnetic domains; Magnetic heads; Magnetic sensors; Magnetostatics; Permanent magnets; Stability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.538632

Filename

538632