One of the important problems for electrical applications of high-temperature superconductors is the contact resistance between the superconductor and a normal metallic wire. In this paper, the authors report a simple method of contact preparation for high-T//c copper-oxide materials (Y-Ba-Cu-O). Based on high-temperature metallization, it reduces the contact resistance from typically 1 OMEGA mm** minus 2 down to APP 1STH 10 mu OMEGA mm minus 2 (77 K), and makes it possible to measure the critical current of a bulk sample, with current densities in the contact area in excess of 2000 A cm minus **2.
Type
research article
Web of Science ID
WOS:A1987J577400044
Authors
Publication date
1987
Published in
Volume
328
Issue
6131
Start page
603
End page
604
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
March 26, 2007
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