Electricity: measuring and testing – Magnetic – Magnetometers
Patent
1993-04-20
1995-11-07
O'Shea, Sandra L.
Electricity: measuring and testing
Magnetic
Magnetometers
336 84M, 505846, 324262, G01R 33035
Patent
active
054650496
ABSTRACT:
A magnetism sensor is disclosed that includes a substrate, a SQUID including a washer of an oxide superconductor thin film formed on a principal surface of the substrate, a hole shaped a similar figure to the washer at the center of the washer, a slit formed between one side of the washer and the hole and a Josephson junction by which portions of the washer at the both sides of the slit are connected across the slit. The magnetism sensor further includes a superconducting flux transformer of an oxide superconductor thin film including an input coil arranged on the SQUID but isolated from the SQUID and a pickup coil arranged on the principal surface of the substrate far from the SQUID, which are connected in parallel and a magnetism shield which excludes flux penetrating into the Josephson junction of the SQUID.
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Itozaki Hideo
Matsuura Takashi
Edmonds Warren S.
O'Shea Sandra L.
Sumitomo Electric Industries Ltd.
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