Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2004-02-27
2009-12-29
Miller, Brian E. (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
C360S324120
Reexamination Certificate
active
07639457
ABSTRACT:
A magnetic sensor is disclosed comprising an antiferromagnetic layer; a first ferromagnetic layer disposed over the antiferromagnetic layer, the first ferromagnetic layer having a magnetization that is pinned by the antiferromagnetic layer; a second ferromagnetic layer disposed over the first ferromagnetic layer, the second ferromagnetic layer having a magnetization that rotates due to an applied magnetic field; a third ferromagnetic layer disposed adjacent to an end of the second ferromagnetic layer, the third ferromagnetic layer having a primarily in-plane magnetization providing a magnetic field to stabilize the end of the second ferromagnetic layer; an amorphous, metallic, nonmagnetic underlayer disposed adjacent to the antiferromagnetic layer; and a crystalline seed layer disposed between the underlayer and the third ferromagnetic layer, the seed layer having a crystalline structure that promotes the in-plane magnetization of the third ferromagnetic layer.
REFERENCES:
patent: 5434826 (1995-07-01), Ravipati et al.
patent: 5739987 (1998-04-01), Yuan et al.
patent: 5742459 (1998-04-01), Shen et al.
patent: 6144534 (2000-11-01), Xue et al.
patent: 6172859 (2001-01-01), Watanabe et al.
patent: 6185081 (2001-02-01), Simion et al.
patent: 6411476 (2002-06-01), Lin et al.
patent: 6449135 (2002-09-01), Ding et al.
patent: 6636395 (2003-10-01), Terunuma
patent: 6668443 (2003-12-01), Chien et al.
patent: 6714388 (2004-03-01), Hasegawa et al.
patent: 6731479 (2004-05-01), Ooshima et al.
patent: 6760200 (2004-07-01), Hasegawa
patent: 6833981 (2004-12-01), Suwabe et al.
patent: 7190560 (2007-03-01), Gill
patent: 7286329 (2007-10-01), Chen et al.
patent: 7342752 (2008-03-01), Zhang et al.
patent: 2003/0011947 (2003-01-01), Saito et al.
patent: 2003/0030947 (2003-02-01), Ooshima
Araki Satoru
Chen Yingjian
Krounbi Mohamad T.
Wang Haifeng
Zhang Jinqiu
Miller Brian E.
Virtual Law Partners LLP
Western Digital (Fremont) , LLC
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