Fluxmeter including squid and pickup coil with flux guiding core

Details Fluxmeter including squid and pickup coil with flux guiding core Fluxmeter including squid and pickup coil with flux guiding core

1991-07-30

1995-05-09

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324223, 324227, 324240, 324248, 336200, 336221, G01R 3312, G01R 33035, G01N 2772, H01F 1704

Patent

active

054143560

ABSTRACT:
A fluxmeter includes an application unit for applying a magnetic field, a superconducting quantum interference element and a flux transmitting circuit. The flux transmitting circuit includes a pickup coil formed of a superconducting print coil and a core for the pickup coil. The core is formed of a soft magnetic material. The core serves to suppress the leakage of magnetic flux to magnetically couple the pickup coil and the superconducting quantum interference element efficiently to improve the sensitivity and resolution of the fluxmeter. The pickup coil may be manufactured by photolithography, sputtering, laser beam deposition, MBE deposition, MOCVD or spray pyrolysis.

REFERENCES:
patent: 3861206 (1975-01-01), Kawafune et al.
patent: 4016519 (1977-04-01), Haas
patent: 4223360 (1980-09-01), Sansom et al.
patent: 4588947 (1986-05-01), Ketchen
patent: 4613817 (1986-09-01), Hoenig
patent: 4649755 (1987-03-01), Volz
patent: 4716773 (1988-01-01), Nonomura et al.
patent: 4875010 (1989-10-01), Yokosawa et al.
patent: 4931730 (1990-06-01), Olsen et al.

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