Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2006-05-16
2006-05-16
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603120, C029S603130, C029S603140, C029S603150, C029S603160, C029S603180, C360S313000, C360S324200, C216S022000, C216S040000, C216S041000
Reexamination Certificate
active
07043823
ABSTRACT:
A current-perpendicular-to the-plane (CPP) magnetoresistive device, such as a magnetic tunnel junction (MTJ), is formed by patterning a capping layer (e.g., using resist) in the shape of a central region of an underlying free ferromagnetic layer that in turn resides over additional layers of the MTJ. Side regions of the capping layer are removed by ion milling or etching down into the free ferromagnetic layer. Unmasked side regions of the ferromagnetic layer are then oxidized to render them locally non-ferromagnetic and electrically insulating.
REFERENCES:
patent: 2960471 (1960-11-01), Gorter
patent: 5491600 (1996-02-01), Chen et al.
patent: 5637235 (1997-06-01), Kim et al.
patent: 5650958 (1997-07-01), Gallagher et al.
patent: 5691865 (1997-11-01), Johnson et al.
patent: 5729410 (1998-03-01), Fontana, Jr. et al.
patent: 5835314 (1998-11-01), Moodera et al.
patent: 5841692 (1998-11-01), Gallagher et al.
patent: 5898548 (1999-04-01), Dill et al.
patent: 6451215 (2002-09-01), Shimazawa et al.
patent: 6542342 (2003-04-01), Hayashi et al.
patent: 6594122 (2003-07-01), Shukh
patent: 6600638 (2003-07-01), Gill
patent: 6621666 (2003-09-01), Miyauchi et al.
patent: 6633461 (2003-10-01), Gill
patent: 2001-68760 (2001-03-01), None
A. Tanaka et al., “Spin-Valve Heads in the Current-Perpendicular-to-Plane Mode for Ultrahigh-Density Recording”, IEEE Transactions on Magnetics, vol. 38, No. 1, Jan. 2002, pp. 84-88.
Childress Jeffrey R.
Dobisz Elizabeth A.
Fontana, Jr. Robert E.
Ho Kuok San
Nguyen Son Van
Berthold Thomas R.
Johnson Daniel E.
Tugbang A. Dexter
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