Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2008-05-06
2008-05-06
Kim, Paul D. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603110, C029S603130, C324S252000, C360S324110, C360S324120, C427S127000, C427S128000
Reexamination Certificate
active
07367109
ABSTRACT:
A method for achieving a nearly zero net magnetic moment of pinned layers in GMR sensors, such as Co—Fe/Ru/Co—Fe, is described. The method determines a thickness of the first pinned layer which will yield the desired net magnetic moment for the pinned layers. A series of test structures are deposited on a substrate such as glass. The test structures include the seed layers, pinning layers and pinned layers and have varying thicknesses of the first pinned layer. The compositions of the materials and the thicknesses of all of the other films remain constant. The net areal magnetic moment of each test structure is measured and plotted versus the thickness of the first pinned layer. The thickness of the first pinned layer which corresponds most closely to zero net areal magnetic moment is chosen as the design point for the sensor.
REFERENCES:
patent: 5583725 (1996-12-01), Coffey et al.
patent: 5731936 (1998-03-01), Lee et al.
patent: 5793279 (1998-08-01), Nepela
patent: 5843589 (1998-12-01), Hoshiya et al.
patent: 5898549 (1999-04-01), Gill
patent: 6046892 (2000-04-01), Aoshima et al.
patent: 6141191 (2000-10-01), Lee et al.
patent: 6157525 (2000-12-01), Iwasaki et al.
patent: 6222707 (2001-04-01), Huai et al.
patent: 6278592 (2001-08-01), Xue et al.
patent: 6292336 (2001-09-01), Horng et al.
patent: 6473275 (2002-10-01), Gill
patent: 6498707 (2002-12-01), Gao et al.
patent: 7035059 (2006-04-01), Gill
patent: 2004/0042130 (2004-03-01), Lin et al.
patent: 2004/0105193 (2004-06-01), Horng et al.
patent: WO00/65578 (2000-11-01), None
patent: WO03/065024 (2003-07-01), None
Li Jinshan
Lin Tsann
Hitachi Global Storage Technologies - Netherlands B.V.
Kim Paul D.
Zilka-Kotab, PC
LandOfFree
Method of fabricating magnetic sensors with pinned layers... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of fabricating magnetic sensors with pinned layers..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of fabricating magnetic sensors with pinned layers... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2791711