Characteristics of YBa sub 2 Cu sub 3 O sub 7 minus. delta. grain boundary junction dc-SQUIDS
Conference
·
· IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)
OSTI ID:6089804
- Lehrstuhl Experimentalphysik II, Univ. Tuebingen, D-7400 Tuebingen (DE)
- International Business Machines Corp., Yorktown Heights, NY (United States). Thomas J. Watson Research Center
This paper reports on the characteristics of YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} grain boundary junction (GBJ) dc-SQUIDs with a square washer geometry design. The current-voltage characteristics of these SQUIDs are close to those predicted by the resistively shunted junction (RSJ) model. Their flux-voltage characteristics are perfectly periodic from 4.2 to 87K. The noise characteristics have been measured as a function of frequency, temperature, bias current, and applied magnetic flux. At frequencies above about lkHz the magnetic flux noise energy of the GBJ-SQUIDs is frequency independent and close to the theoretical value estimated from the Nyquist noise in the junction normal resistance. At low frequencies the noise scales approximately as 1/f.
- OSTI ID:
- 6089804
- Report Number(s):
- CONF-900944--
- Conference Information:
- Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 27:2
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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·
OSTI ID:6046951
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Thesis/Dissertation
·
Thu Dec 31 23:00:00 EST 1981
·
OSTI ID:5195355
Related Subjects
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DESIGN
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUXMETERS
FREQUENCY DEPENDENCE
GRAIN BOUNDARIES
JUNCTIONS
MAGNETIC FLUX
MEASURING INSTRUMENTS
MEASURING METHODS
MICROSTRUCTURE
MICROWAVE EQUIPMENT
NOISE
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING JUNCTIONS
TEMPERATURE DEPENDENCE
TEMPERATURE NOISE
TESTING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DESIGN
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUXMETERS
FREQUENCY DEPENDENCE
GRAIN BOUNDARIES
JUNCTIONS
MAGNETIC FLUX
MEASURING INSTRUMENTS
MEASURING METHODS
MICROSTRUCTURE
MICROWAVE EQUIPMENT
NOISE
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING JUNCTIONS
TEMPERATURE DEPENDENCE
TEMPERATURE NOISE
TESTING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES