High performance dc SQUID magnetometers with single layer YBa[sub 2]Cu[sub 3]O[sub 7[minus][ital x]] flux transformers
Journal Article
·
· Applied Physics Letters; (United States)
- Department of Physics, University of California, Berkeley, California 94720 (United States) Materials Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)
- Conductus, Inc., 969 West Maude Avenue, Sunnyvale, California 94086 (United States)
We have fabricated high-transition temperature superconducting magnetometers involving a flux transformer patterned in a single film of YBa[sub 2]Cu[sub 3]O[sub 7[minus][ital x]] (YBCO) on a 50-mm-diam substrate. This transformer is inductively coupled to a loop that in turn is directly coupled to a dc superconducting quantum interference device, patterned in a single layer of YBCO deposited on a SrTiO[sub 3] bicrystal. At 77 K, the lowest magnetic field noise achieved is 31 fT Hz[sup [minus]1/2] at frequencies above 5 Hz, increasing to 39 fT Hz[sup [minus]1/2] at 1 Hz.
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5403900
- Journal Information:
- Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 63:26; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:5920660
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Journal Article
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·
OSTI ID:6784002
Related Subjects
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FABRICATION
FLUXMETERS
HIGH-TC SUPERCONDUCTORS
INTEGRATED CIRCUITS
MAGNETOMETERS
MEASURING INSTRUMENTS
MICROELECTRONIC CIRCUITS
MICROWAVE EQUIPMENT
NOISE
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
QUATERNARY COMPOUNDS
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTORS
TRANSFORMERS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FABRICATION
FLUXMETERS
HIGH-TC SUPERCONDUCTORS
INTEGRATED CIRCUITS
MAGNETOMETERS
MEASURING INSTRUMENTS
MICROELECTRONIC CIRCUITS
MICROWAVE EQUIPMENT
NOISE
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
QUATERNARY COMPOUNDS
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTORS
TRANSFORMERS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES