Two leg, side by side, 0.6 to 1.0 micron wide, high output, vertical, GMR, head sensors

Author

Pohm, A.V. ; Anderson, J.M. ; Beech, R.S. ; Daughton, J.M.

Author_Institution

Nonvolatile electron., Eden Prairie, MN, USA

Volume

34

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1486

Lastpage

1488

Abstract

Experimental and analytical studies have been carried out on 0.6 to 1.0 micron wide, high output, vertical, GMR, head sensors with segments with a grounding bearing surface. The two separate segments double the amount of sensor length which is active, but increase the width of the sensor at the air bearing surface. Two types were examined; one variety of sensor provided a differential signal between the two segments and the other provided a common signal. The outputs of shielded and unshielded sensors were measured while operating with 2 to 5 mA of sense current per micron of width. The two leg sensor structures were found capable of providing peak to peak outputs of over 3 mV in read heads with a non-uniform gap

Keywords

giant magnetoresistance; magnetic heads; magnetic sensors; magnetoresistive devices; 0.6 to 1.0 mum; 2 to 5 mA; 3 mV; air bearing surface; common signal; differential signal; grounding bearing surface; high output vertical GMR head sensors; nonuniform gap; read heads; segments; sensor length; shielded sensors; two leg side by side GMR head sensors; unshielded sensors; Grounding; Leg; Magnetic anisotropy; Magnetic heads; Magnetic materials; Magnetic sensors; Magnetization; Perpendicular magnetic anisotropy; Sheet materials; Soft magnetic materials;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.706591

Filename

706591