Magnetic sensor including a spin valve magnetoresistance effect

Details Magnetic sensor including a spin valve magnetoresistance effect Magnetic sensor including a spin valve magnetoresistance effect

1997-12-24

2000-05-09

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 539

Patent

active

060612118

ABSTRACT:
A magnetic sensor comprises a pair of hard magnetic films magnetized inplane in directions substantially perpendicular to the direction of a signal magnetic field and substantially equal to each other, a soft magnetic film formed in the same plane as the pair of hard magnetic films and interposed between the pair of hard magnetic films and held in contact therewith or in proximity thereto, and a signal magnetic field detecting film superposed on the main surface of the soft magnetic film. A magnetic recording-reproducing head using this reproducing head comprises the reproducing head mentioned above, a pair of magnetic pole layers vertically opposed to each other through the medium of a recording gap, and a recording head possessed of a recording track width equal to or smaller than the reproducing track width of the reproducing head. The reproducing track width L.sub.1 is so set as to satisfy the relation, L.sub.2 .ltoreq.L.sub.1 <L.sub.3, wherein L.sub.2 stands for the width of a track written in a magnetic recording medium by the recording head and L.sub.3 for the distance between the tracks adjacent to the track mentioned above.

REFERENCES:
patent: 3840898 (1974-10-01), Bajorek et al.
patent: 4663685 (1987-05-01), Tsang
patent: 5206590 (1993-04-01), Dieny et al.
patent: 5287238 (1994-02-01), Baumgart et al.
patent: 5301079 (1994-04-01), Cain et al.
patent: 5408377 (1995-04-01), Gurney et al.
patent: 5438470 (1995-08-01), Ravipati et al.
patent: 5442507 (1995-08-01), Koga et al.
patent: 5638235 (1997-06-01), Gill et al.

Affiliated with

Also associated with

Rating

Magnetic sensor including a spin valve magnetoresistance effect does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic sensor including a spin valve magnetoresistance effect , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic sensor including a spin valve magnetoresistance effect will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1071107