Electricity: measuring and testing – Magnetic – Magnetometers
Patent
1992-03-12
1993-04-13
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Magnetometers
505702, 505846, G01R 33035, H01L 3922
Patent
active
052026302
ABSTRACT:
A magnetometer is prepared by depositing three thin-film SQUID magnetic field detectors upon a substrate. Two of the detectors incorporate stripline SQUID detectors deposited at right angles to each other, to measure the orthogonal components of a magnetic field that lie in the plane of the substrate. The third detector uses a planar loop SQUID detector that measures the component of the magnetic field that is perpendicular to the substrate. The stripline SQUID detectors have thin-film base and counter electrodes separated by an insulating layer which is at least about 1 micrometer thick, and a pair of Josephson junctions extending between the electrodes through the insulating layer.
REFERENCES:
patent: 3643237 (1972-02-01), Anacker
patent: 4837604 (1989-06-01), Faris
patent: 4869598 (1989-09-01), McDonald
M. W. Cromar and P. Carelli, "Low-noise tunnel junction dc SQUID's", Appl. Phys. Lett., vol. 38(9), May 1981, pp. 723-725.
Biomagnetic Technologies, Inc.
Garmong Gregory
Strecker Gerard R.
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