Superconducting quantum interference device having thin film Jos

Details Superconducting quantum interference device having thin film Jos Superconducting quantum interference device having thin film Jos

1980-08-25

1983-09-06

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetometers

307306, G01R 33035

Patent

active

044031890

ABSTRACT:
Thin film Josephson junctions are combined with a block of superconductive material to form a low inductance dc SQUID having very high sensitivity. The block has a toroidal cavity with a circular opening or gap between the cavity and one face of the block. A pair of Josephson junctions, using planar thin film technology, are formed on a substrate and clamped against the block so that the two junctions in series bridge the gap, the junctions and the block combining to form a superconductive closed loop with two junctions in the loop. Coils in the toroidal cavity are inductively coupled to this closed loop.

REFERENCES:
patent: 3445760 (1969-05-01), Zimmerman
patent: 3573661 (1971-04-01), McCumber
patent: 3723755 (1973-03-01), Morse
patent: 3758854 (1973-09-01), Zimmerman
patent: 3962628 (1976-06-01), Rein
patent: 4320341 (1982-03-01), Lutes

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