CPP giant magnetoresistive head having antiferromagnetic...

Details CPP giant magnetoresistive head having antiferromagnetic... CPP giant magnetoresistive head having antiferromagnetic...

2007-05-22

2007-05-22

Bernatz, Kevin M. (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Magnetic head

C428S811200, C428S815000, C428S816000, C360S324110

Reexamination Certificate

active

10823484

ABSTRACT:
A CPP giant magnetoresistive head includes lower and upper shield layers with a predetermined distance therebetween, and a giant magnetoresistive element (GMR) including pinned and free magnetic layers disposed between the upper and lower shield layers with a nonmagnetic layer interposed between the pinned and free magnetic layers. A current flows perpendicularly to the film plane of the GMR. The magnetoresistive head further includes an antiferromagnetic layer (an insulating AF of Ni—O or α-Fe2O3) provided in the rear of the GMR in a height direction to make contact with the upper or lower surface of a rear portion of the pinned magnetic layer which extends in the height direction, and an exchange coupling magnetic field is produced at the interface with the upper or lower surface, so that the magnetization direction of the pinned magnetic layer is pinned by the exchange coupling magnetic field in the height direction.

REFERENCES:
patent: 5739987 (1998-04-01), Yuan et al.
patent: 6023395 (2000-02-01), Dill et al.
patent: 6052263 (2000-04-01), Gill
patent: 6219212 (2001-04-01), Gill et al.
patent: 6259586 (2001-07-01), Gill
patent: 6292335 (2001-09-01), Gill
patent: 6327121 (2001-12-01), Nagasawa et al.
patent: 6330136 (2001-12-01), Wang et al.
patent: 6381105 (2002-04-01), Huai et al.
patent: 6466419 (2002-10-01), Mao
patent: 6501626 (2002-12-01), Gill
patent: 6519117 (2003-02-01), Gill
patent: 7035059 (2006-04-01), Gill
patent: 2002/0044389 (2002-04-01), Seigler
patent: 2002/0172840 (2002-11-01), Terada et al.
patent: 2003/0053270 (2003-03-01), Gill
patent: 2003/0179515 (2003-09-01), Pinarbasi
patent: 1 416 474 (2004-05-01), None
patent: 2 390 217 (2003-12-01), None
patent: 2000-123325 (2000-04-01), None
patent: 2001-266313 (2001-09-01), None
patent: 2001-307307 (2001-11-01), None
patent: 2002-232040 (2002-08-01), None
patent: 2002-305338 (2002-10-01), None
patent: 2002-314168 (2002-10-01), None
patent: 2002-319112 (2002-10-01), None
Search Report dated Jul. 21, 2004 for British Patent Application No. GB 0408133.7.

Affiliated with

Also associated with

Rating

CPP giant magnetoresistive head having antiferromagnetic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with CPP giant magnetoresistive head having antiferromagnetic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CPP giant magnetoresistive head having antiferromagnetic... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3788133