Crossfeed response of DMR vs. SAL multi-track heads

Author

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

Author_Institution

Centre for Res. in Inf. Storage Technol., Univ. of Plymouth, UK

Volume

34

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1456

Lastpage

1458

Abstract

A new concept of Dual Magnetoresistive reproductive mode is applied to improve the design and operation of high-performance multi-track Read-While-Write (RWW) heads for tape and/or potential disk applications. RWW operation exists in some magnetic recording units in which verifying what was recorded is necessary. A new multi-track Inductive/Dual Magnetoresistive (DMR) head design is found to reduce the crossfeed noise radiation by about a factor of 20, compared with the conventional Soft-Adjacent-Layer (SAL) Magnetoresistive Heads design, which is the most favoured approach for achieving simultaneous read and write operations, especially in a multi-track head with ultra-narrow trackwidth. To verify these analysis results, measurements with 2.9 μm track width inductive/MR and inductive/DMR heads were done

Keywords

magnetic heads; magnetoresistive devices; crossfeed response; dual magnetoresistive heads; multi-track heads; read-while-write heads; soft-adjacent-layer; Electric resistance; Helium; Magnetic flux; Magnetic heads; Magnetic noise; Magnetic recording; Magnetoresistance; Mathematical model; Noise reduction; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.706581

Filename

706581