YBaCuO current lead for liquid helium temperature applications

A study was made of the losses of a double current lead (copper from 300 K to 77 K and YBaCuO from 77 K to 4.2 K). The authors give the main results obtained: (1) on the value of 1/J/sub c/ integral /sub 4.2/ /sub K//sup 77/ /sup K/KdT, (2) on the electrical contact resistance between YBaCuO and met...

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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.1866-1869
Main Authors: Grivon, F., Leriche, A., Cottevieille, C., Kermarrec, J.C., Petitbon, A., Fevrier, A., Laumond, Y.
Format: Article
Language:English
Subjects:
360204 > Ceramics, Cermets, & Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
Applied sciences
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Conducting materials
Cooling
COPPER
COPPER COMPOUNDS
COPPER OXIDES
CURRENTS
DATA
ELECTRIC CONDUCTIVITY
ELECTRIC CONDUCTORS
ELECTRIC CURRENTS
Electrical engineering. Electrical power engineering
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
ELEMENTS
Exact sciences and technology
EXPERIMENTAL DATA
Helium
INFORMATION
LOSSES
MATERIALS SCIENCE
METALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
Pareto optimization
PHYSICAL PROPERTIES
POWER SUPPLIES
Resistance heating
Superconducting coils
SUPERCONDUCTING DEVICES
SUPERCONDUCTING WIRES
Temperature
Thermal conductivity
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
Various equipment and components
WIRES
Yttrium barium copper oxide
YTTRIUM COMPOUNDS 665412 > Superconducting Devices-- (1992-)
YTTRIUM OXIDES
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Summary:A study was made of the losses of a double current lead (copper from 300 K to 77 K and YBaCuO from 77 K to 4.2 K). The authors give the main results obtained: (1) on the value of 1/J/sub c/ integral /sub 4.2/ /sub K//sup 77/ /sup K/KdT, (2) on the electrical contact resistance between YBaCuO and metal, (3) on the transport critical current density and 50-Hz losses of sintered tubes and textured material, and (4) on a 1-kA double DC current lead. On the basis of these results, it seems possible to decrease the current lead losses by a factor of 5.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.133560