CPP GMR with improved synthetic free layer

Details CPP GMR with improved synthetic free layer CPP GMR with improved synthetic free layer

2006-10-31

2006-10-31

Evans, Jefferson (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S324110

Reexamination Certificate

active

07130166

ABSTRACT:
A magnetic head having an antiparallel (AP) pinned layer structure with at least two pinned layers having magnetic moments that are self-pinned antiparallel to each other. A free layer structure is spaced apart from the AP pinned layer structure, and includes a first free layer having a magnetic moment, a second free layer having a magnetic moment pinned antiparallel to the magnetic moment of the first free layer, and a third free layer having a magnetic moment pinned antiparallel to the magnetic moment of the second free layer.

REFERENCES:
patent: 6693776 (2004-02-01), Gill
patent: 6700757 (2004-03-01), Pinarbasi
patent: 6806804 (2004-10-01), Saito et al.
patent: 6943997 (2005-09-01), Gill
patent: 7023670 (2006-04-01), Saito
patent: 2002/0191348 (2002-12-01), Hasegawa et al.
patent: 2003/0227724 (2003-12-01), Li et al.
patent: 2004/0141260 (2004-07-01), Hasegawa et al.
patent: 2004/0218311 (2004-11-01), Saito et al.

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