Electricity: measuring and testing – Magnetic – Magnetometers
Reexamination Certificate
2005-04-19
2005-04-19
LeDynh, Bot (Department: 2862)
Electricity: measuring and testing
Magnetic
Magnetometers
C324S207210, C428S598000
Reexamination Certificate
active
06882145
ABSTRACT:
The invention relates to a Wheatstone bridge containing bridge elements that are connected in a conventional manner and consisting of a spin-valve system, in addition to a method for producing the same. The aim of the invention is to produce a Wheatstone bridge, in which respective half-bridges lying adjacent to one another have a respective non-parallel bias magnetisation direction. To achieve this, the respective bridge elements that are not adjacent (1, 3or2, 4) are provided with a doping of implantable ions in quantities of between 1.1012and 5.1016atoms/cm2 beneath the pinned ferromagnetic layer of a GMR- or TMR-spin-valve layer system. During the bombardment of selected bridge areas (1, 3) or surface areas, which are not provided with a covering (5), with a low dose of low-energy ions, whose strengths are sufficiently great to enable the is ions to penetrate the pinned ferromagnetic layer, all surface areas or bridge elements (1, 2, 3, 4) are exposed to a homogeneous, targeted magnetic field of sufficient strength.
REFERENCES:
patent: 5561368 (1996-10-01), Dovek et al.
patent: 5904996 (1999-05-01), Van Der Zaag et al.
patent: 6070333 (2000-06-01), Hufgard et al.
patent: 6384600 (2002-05-01), Coehoorn
patent: 6465053 (2002-10-01), Lenssen et al.
patent: 6501678 (2002-12-01), Lenssen et al.
patent: 43 01 704 (1994-07-01), None
patent: 43 17 512 (1994-12-01), None
patent: 195 32 674 (1996-11-01), None
patent: 196 49 265 (1998-06-01), None
patent: 197 43 335 (1998-11-01), None
patent: 198 30 343 (2000-04-01), None
patent: 0 710 850 (1996-05-01), None
Apr. 22, 1991 Oscillatory Magnetic Exchange Coupling through Thin Copper Layers S.S.P. Parkin, R. Bhadra, and K.P. Roche The American Physical Society/Physical Review Letters vol. 66, No. 16 2152-2155.
Oct. 4, 1993 Giant Negative Magnetoresistance in Perovskitelike La2/3Ba1/3MnOxFerromagnetic Films R. von Helmolt, J. Wecker, B. Holzapfel, L. Schultz, and K. Samwer The American Physical Society/Physical Review Letters vol. 71, No. 14 2331-2338.
Ehresmann Arno
Engel Wolfgang-Dietrich
Fassbender Juergen
Hillebrands Burkard
Mattheis Roland
Institut fuer Physikalische Hochtechnologie e.V.
Jordan and Hamburg LLP
LeDynh Bot
LandOfFree
Wheatstone bridge containing bridge elements, consisting of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wheatstone bridge containing bridge elements, consisting of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wheatstone bridge containing bridge elements, consisting of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3418393