Keepered media reproduction with dual MR heads

Author

Wang, Frank Z. ; He, Lian N. ; Mapps, Desmond J. ; Wilton, David T. ; Clegg, Warwick W ; Robinson, Paul

Author_Institution

Sch. of Electron., Commun. & Electr. Eng., Plymouth Univ., UK

Volume

34

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1982

Lastpage

1984

Abstract

The key technique in applying keepered media system in a reproduction is how to “open” the keeper layer. In this paper we propose a new concept of keepered-media-reproduction with Dual Magnetoresistive (DMR) heads. The keeper layer may be biased by the stray flux from DMR sensors, The shunting-releasing ratio between reproduced signals without and with a sense current is found to be -26 dB. This media system is completely stable against thermal demagnetization. It is believed that keepered media may offer a similar advantage with MR heads and potentially allow magnetics to break the 10 Gb/in² areal density barrier with the aid of the high performance gains of MR heads

Keywords

finite element analysis; magnetic disc storage; magnetic heads; magnetoresistive devices; TOSCA package; areal density barrier; biased layer; dual magnetoresistive heads; finite element model; high performance gain; keepered media reproduction; magnetic recording; nonlinear EM field simulation; replay process simulation; reproduced signals; sense current; shunting-releasing ratio; stable against thermal demagnetization; stray flux; Degradation; Demagnetization; Helium; Magnetic flux; Magnetic heads; Magnetic recording; Magnetic sensors; Magnetoresistance; Performance gain; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.706764

Filename

706764