Preparation and properties of all high T sub c SNS-type edge dc SQUIDs

Conference · Fri Mar 01 04:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6093131

Gao, J; Aarmink, W A.M.; Gerritsma, G J; Veldhuis, D ^[1]

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1. Univ. of Twente Faculty of Applied Physics, P.O. Box 217, 7500 AE Enschede (NL)

High-T{sub c} SNS-type Josephson junctions and dc SQUIDs were successfully fabricated using hetero- epitaxially grown multilayers of YBa{sub 2}Cu{sub 3}O{sub x} and PrBa{sub 2}Cu{sub 3}O{sub x}. These layers are c-axis oriented and hence edges of the multilayers give rise to a current flow in the ab-plane between the electrodes of a Josephson junction. The necessary structuring was done by Ar ion beam etching. The individual junctions exhibit a supercurrent up to 80 K. The I{sub c}R{sub n}-product of these junctions usually has a lower limit of 8 mV at 4.2 K. Voltage modulation of the first dc SQUIDs can be observed up to 66 K. At 4.2 K we investigated the voltage modulation for various bias currents and also performed noise measurements. In this paper details on the fabrication and measurements are presented.

• OSTI ID: 6093131
• 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

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
665300 -- Interactions Between Beams & Condensed Matter-- (1992-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ARGON IONS
BARIUM COMPOUNDS
BARIUM OXIDES
BEAMS
CHALCOGENIDES
CHARGED PARTICLES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRODES
ELECTRONIC EQUIPMENT
EQUIPMENT
ETCHING
FABRICATION
FLUXMETERS
FREQUENCY MODULATION
HIGH-TC SUPERCONDUCTORS
ION BEAMS
IONS
JUNCTIONS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
MODULATION
NOISE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
SURFACE FINISHING
TEMPERATURE NOISE
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES