Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2006-11-28
2006-11-28
Kim, Paul D. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603070, C029S603110, C029S603140, C360S324110, C360S324120, C427S127000, C427S128000, C428S692100, C428S690000
Reexamination Certificate
active
07140093
ABSTRACT:
A magneto-resistive (MR) sensor is provided including a pinned layer, and a free layer disposed above the pinned layer. Also included is a pair of leads disposed over portions of the free layer. Further, a pinning layer is disposed below the pinned layer. Disposed below the pinning layer is an underlayer. For enhanced operation, first portions of the pinned layer disposed below the leads have a first pinned layer magnetization parallel with a free layer magnetization associated with the free layer in the absence of an external field. Further, a second portion of the pinned layer has a second pinned layer magnetization perpendicular with the free layer magnetization in the absence of the external field.
REFERENCES:
patent: 6084405 (2000-07-01), Suzuki
patent: 6150045 (2000-11-01), Saito et al.
patent: 6741429 (2004-05-01), Baglin et al.
patent: 09161230 (1997-06-01), None
“Noise characteristics of tunneling magnetoresistive sensors”; Hae Seok Cho; Nazarov, A; Nowak, J.; Tabat, N.; Magnetics Conference, 2002. INTERMAG Europe; Apr. 28-May 2, 2002; pp. BP11.
Hitachi Global Storage Technologies - Netherlands B.V.
Kim Paul D.
Zilka-Kotab, PC
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