FIELD: cryoelectronics; thin-film cryogenic devices built around superconductors.
SUBSTANCE: proposed film-type weak-magnetic-field superconducting sensor incorporating magnetic flux transformer has magnesium oxide based insulating substrate in the form of high-temperature superconducting strip inserted between two magnetic flux transformers made of same high-temperature superconducting film. This sensor built around high-temperature superconducting film of material system Y-Ba-Cu-O operating at liquid nitrogen boiling temperature has magnetic-field threshold resolution of -20-50 pT which is higher than that of prior-art sensors, except for superconducting quantum interface devices.
EFFECT: reduced magnetic-field threshold sensitivity of superconducting film material.
1 cl, 1 dwg
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