Self-pinned CPP sensor using Fe/Cr/Fe structure

Details Self-pinned CPP sensor using Fe/Cr/Fe structure Self-pinned CPP sensor using Fe/Cr/Fe structure

2007-03-13

2007-03-13

Klimowicz, William J (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

10780978

ABSTRACT:
A magnetic head having a free layer, an antiparallel (AP) pinned layer structure spaced apart from the free layer, and a high coercivity structure positioned towards the AP pinned layer structure on an opposite side thereof relative to the free layer. The high coercivity structure pins a magnetic orientation of the AP pinned layer structure. The AP pinned layer structure includes at least two Fe-containing pinned layers having magnetic moments that are self-pinned antiparallel to each other, the pinned layers being separated by an AP coupling layer of Cr.

REFERENCES:
patent: 4949039 (1990-08-01), Grunberg
patent: 5018037 (1991-05-01), Krounbi et al.
patent: 5134533 (1992-07-01), Friedrich et al.
patent: 5206590 (1993-04-01), Dieny et al.
patent: 5313186 (1994-05-01), Schuhl et al.
patent: 5341118 (1994-08-01), Parkin et al.
patent: 5408377 (1995-04-01), Gurney et al.
patent: 5508867 (1996-04-01), Cain et al.
patent: 5583725 (1996-12-01), Coffey et al.
patent: 5598308 (1997-01-01), Dieny et al.
patent: 5657191 (1997-08-01), Yuan
patent: 5661621 (1997-08-01), Kobayashi et al.
patent: 5801984 (1998-09-01), Parkin
patent: 6023395 (2000-02-01), Dill et al.
patent: 6052263 (2000-04-01), Gill
patent: 6105237 (2000-08-01), Gill
patent: 6159593 (2000-12-01), Iwasaki et al.
patent: 6271998 (2001-08-01), Coehoorn et al.
patent: 6313973 (2001-11-01), Fuke et al.
patent: 6341053 (2002-01-01), Nakada et al.
patent: 6515573 (2003-02-01), Dong et al.
patent: 6603642 (2003-08-01), Araki et al.
patent: 6608738 (2003-08-01), Sakakima et al.
patent: 6831816 (2004-12-01), Gill
patent: 6838740 (2005-01-01), Huai et al.
patent: 2001/0012187 (2001-08-01), Lai et al.
patent: 2002/0048128 (2002-04-01), Kamiguchi et al.
patent: 2002/0051380 (2002-05-01), Kamiguchi et al.
patent: 2002/0085323 (2002-07-01), Smith et al.
patent: 2002/0101691 (2002-08-01), Zhu
patent: 2002/0154457 (2002-10-01), Horng et al.
patent: 2003/0011944 (2003-01-01), Hosomi
patent: 2003/0030945 (2003-02-01), Heinonen et al.
patent: 2003/0035256 (2003-02-01), Hayashi et al.
patent: 2003/0039081 (2003-02-01), Seigler et al.
patent: 2003/0137784 (2003-07-01), Noma
patent: 2003/0151859 (2003-08-01), Hayashi et al.
patent: 2003/0161077 (2003-08-01), Kawawake et al.
patent: 2003/0227724 (2003-12-01), Li et al.
patent: 2004/0008454 (2004-01-01), Gill
patent: 2004/0246776 (2004-12-01), Covington
patent: 2005/0111148 (2005-05-01), Li et al.
patent: 2005/0122635 (2005-06-01), Freitag et al.
patent: 7221363 (1995-08-01), None
patent: 2001274477 (2001-10-01), None
Gijs, M. et al., “Perpendicular giant magnetoresistance of microstructures in Fe/Cr and Co/Cu multilayers (invited)”, J.Appl. Phys, vol. 75, No. 10, May 15, 1994.
Herper, H. et al., “Ab initio study of CPP transport in Fe/CR/Fe trilayers: influence of transition metal impurities”, Mat. Res. Soc. Symp. Proc. vol. 746, 2003.
Mathon, J., “Ab initio calculation of the perpendicular giant magnetoresistance of finite Co/Cu(001) and Fe/Cr(001) superlattices with fluctuating layer thickness”, Physical Review B, vol. 55, No. 2, Jan. 1, 1997.
Parkin, S., “Oscillations in Exchange Coupling and Magnetoresistance in Metallic Superlattice Structures: Co/Ru, Co/Cr, and Fe/Cr”, Physical Review Letters, vol. 64, No. 19, May 7, 1990.
Wu, Yihong et al, “Antiferromagnetically coupled hard/Ru/soft layers and their applications in spin valves”, Applied Physics Letters, vol. 80, No. 23, Jun. 10, 2002.
Seigler, Michael A. et al., “Use of a permanent magnet in the synthetic antiferromagnet of a spin-valve”, Journal of Applied Physics, vol. 91, No. 4, Feb. 15, 2002.
Office Action from U.S. Appl. No. 10/781,232 mailed Jul. 6, 2006.
Copy of Final Office Action Summary from application no. 10/781,232 which was mailed on Nov. 14, 2006.

Affiliated with

Also associated with

Rating

Self-pinned CPP sensor using Fe/Cr/Fe structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-pinned CPP sensor using Fe/Cr/Fe structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-pinned CPP sensor using Fe/Cr/Fe structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3795005