Superconducting wire and method of manufacturing the same

Details Superconducting wire and method of manufacturing the same Superconducting wire and method of manufacturing the same

1988-04-01

1990-11-27

Fertig, Mary Lynn

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

29599, 264 85, 26421111, 505704, 505733, 505740, H01B 1200, H01L 3924, B29C 4700, B29C 4788

Patent

active

049735748

ABSTRACT:
A method of manufacturing a superconducting wire is carried out by first preparing a material being composed of Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7. This material is melted in a platinum crucible. A melt thus obtained is drawn out from a hole provided on the bottom wall of the crucible to be linearly discharged. The linearly discharged melt is cooled and solidified. A cooling/solidifying space for such a step is set at a temperature less by about 10.degree. C. than the solidifying point of the material, and a slow-cooling zone is provided next to the cooling/solidifying space. This slow-cooling zone is provided to be at a relatively high temperature in a portion closer to the hole while having a temperature gradient along a direction for linearly discharging the melt. A superconducting wire being composed of Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7 is obtained. This superconducting wire superconducts at 85K.

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Matsuzaki et al., "High T.sub.c Superconductivity of a Melt Spun ErBa.sub.2 Cu.sub.3 Oxide Ribbon", Jap. Journal of App. Phys., vol. 26, No. 8, Aug. 1987, pp. L1384-L1387.
Jin et al., "Fabrication of Dense Ba.sub.2 Y Cu.sub.3 O.sub.7-8 Superconductor Wire by Molten Oxide Processing", 1987.
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