Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Reexamination Certificate
2007-11-20
2007-11-20
Lefkowitz, Edward (Department: 2862)
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
C324S209000
Reexamination Certificate
active
10539471
ABSTRACT:
A system for directly measuring a magnetostriction value of a magnetoresistive element includes a fixture for receiving a substrate carrying one or more magnetoresistive elements. A magnet assembly applies a first magnetic field parallel to the substrate, and a magnetic alternating field perpendicular to the substrate and parallel to magnetoresistive layers of the elements. A stress-inducing mechanism applies a mechanical stress to the substrate, the stress being oriented parallel to the substrate. A measuring subsystem measures a signal from at least one of the magnetoresistive elements.
REFERENCES:
patent: 3336154 (1967-08-01), Oberg et al.
patent: 4310798 (1982-01-01), Brunsch et al.
patent: 5721488 (1998-02-01), Sakai et al.
patent: 6664783 (2003-12-01), Baril et al.
M. Ali, R. Watts, “Measurement of Saturation Magnetostriction Using Novel Strained Substrate Techniques And The Control of the Magnetic Anisotropy,” Journal of Magnetism and Magnetic Materials 202(1999) 85-94.
Lydia Baril, Bruce Gurney, Dennis Wilhoit, and V. Speriosu, “Magnetostriction in Spin Valves,” Journal of Applied Physics, vol. 85, No. 8, Apr. 15, 1999.
IBM Technical Disclosure Bulletin, “Magnetostriction Mapping of Soft Magnetic Films on Thick Rigid Substrates,” vol. 33, No. 8, Jan. 1991.
International Business Machines - Corporation
Lefkowitz Edward
Whittington Kenneth J
Zilka-Kotab, PC
LandOfFree
Systems and methods for measuring magnetostriction in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Systems and methods for measuring magnetostriction in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Systems and methods for measuring magnetostriction in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3814301