YBaCuO current lead for liquid helium temperature applications
- 1 March 1991
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Magnetics
- Vol. 27 (2) , 1866-1869
- https://doi.org/10.1109/20.133560
Abstract
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.Keywords
This publication has 7 references indexed in Scilit:
- High temperature superconducting current leads for cryogenic apparatusCryogenics, 1989
- Anisotropy of the thermal conductivity ofPhysical Review B, 1989
- Thermal conductivity of the Y-Ba-Cu-O tetragonal structure: phase transitions and hysteresis behaviourSuperconductor Science and Technology, 1989
- Electromagnetic properties of sintered YBaCuO superconductors: critical current densities, transport currents and a.c. lossesCryogenics, 1989
- Superconducting current-leads made from high Tc superconductor and normal metal conductorCryogenics, 1989
- Current leads with high T/sub c/ superconducting bus barsIEEE Transactions on Magnetics, 1989
- Method for making low-resistivity contacts to high T c superconductorsApplied Physics Letters, 1988