Properties of the YBCO thin film interferometers fabricated on ZrO/sub 2/ bicrystal substrates

The properties of DC SQUIDs made of YBCO thin film deposited on ZrO/sub 2/ bicrystal substrate and the nature of the fabricated Josephson junctions have been studied. It is found that the characteristics of the junctions are similar to those of the SNS structures with paramagnetic impurities in the...

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Bibliographic Details
Published in:IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) 1991-03, Vol.27 (2), p.2442-2445
Main Authors: Kovalev, A.S., Krasnosvobotsev, S.I., Kuprijanov, M.Yu, Maresov, A.G., Ozerenko, A.A., Pechen, E.V., Pirogov, V.G., Pogosova, I.S., Snigirev, O.V., Vengrus, I.I.
Format: Article
Language:English
Subjects:
360201 > Ceramics, Cermets, & Refractories-- Preparation & Fabrication
440800 > Miscellaneous Instrumentation-- (1990-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BICRYSTALS
CHALCOGENIDES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
FABRICATION
FLUXMETERS
Impurities
INTERFEROMETERS
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FIELDS
Magnetic noise
MAGNETISM
MATERIALS SCIENCE
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
OTHER INSTRUMENTATION
OXIDES
OXYGEN COMPOUNDS
Paramagnetic materials
PARAMAGNETISM
PHYSICAL PROPERTIES
POLYCRYSTALS
SENSITIVITY
Sputtering
SQUID DEVICES
SQUIDs
SUBSTRATES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING JUNCTIONS
THIN FILMS
Transistors
TRANSITION ELEMENT COMPOUNDS
Yttrium barium copper oxide
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS 665412 > Superconducting Devices-- (1992-)
ZIRCONIUM OXIDES
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Description
Summary:The properties of DC SQUIDs made of YBCO thin film deposited on ZrO/sub 2/ bicrystal substrate and the nature of the fabricated Josephson junctions have been studied. It is found that the characteristics of the junctions are similar to those of the SNS structures with paramagnetic impurities in the N layer. A level of interferometer noise close to 5*10/sup -4/ Phi /sub 0//Hz/sup 1/2/ and a magnetic field sensitivity of 10/sup -10/ T/Hz/sup 1/2/ at frequencies higher than 25 Hz in the usual feedback mode of the SQUID operation have been achieved at 77 K.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.133712