IMPROVED LOW CONTACT RESISTANCE IN HIGH-T//c Y-Ba-Cu-O CERAMIC SUPERCONDUCTORS

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.


Published in:
Nature, 328, 6131, 603-604
Year:
1987
Laboratories:




 Record created 2007-03-26, last modified 2018-03-17


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