Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2005-07-25
2008-08-12
Cao, Allen T (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
07411765
ABSTRACT:
A CPP GMR sensor structure having free and reference layers, where the magnetic orientations of the free and reference layers are non-orthogonal. In one embodiment, a ferromagnetic free layer film has a bias-point magnetization nominally oriented in plane of the film thereof, in a first direction at an angle θfbwith respect to a longitudinal axis being defined as the intersection of the plane of deposition of the free layer and the plane of the ABS. A ferromagnetic reference layer film has a bias-point magnetization nominally oriented in a plane of the film thereof, in a second direction at angle θrbwith respect to said longitudinal axis that is not orthogonal to the said first direction.
REFERENCES:
patent: 6262869 (2001-07-01), Lin et al.
patent: 2005/0068688 (2005-03-01), Sbiaa et al.
patent: 2007/0063237 (2007-03-01), Huai et al.
Childress Jeffrey Robinson
Smith Neil
Cao Allen T
Hitachi Global Storage Technologies - Netherlands B.V.
Zilka-Kotab, PC
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