Method of producing superconducting fibers of bismuth strontium

Details Method of producing superconducting fibers of bismuth strontium Method of producing superconducting fibers of bismuth strontium

1990-03-12

1991-10-01

Roy, Upendra

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

29599, 148404, 428930, 505704, 505733, F04B 4188, H01B 1204

Patent

active

050533843

ABSTRACT:
Fibers of Bi(2212) have been produce by pendant drop melt extraction. This technique involves the end of a rod of Bi(2212) melted with a hydrogen-oxygen torch, followed by lowering onto the edge of a spinning wheel. The fibers are up to 15 cm in length with the usual lateral dimensions, ranging from 20 um to 30 um. The fibers require a heat treatment to make them superconducting.

REFERENCES:
patent: 4937225 (1990-06-01), Kalonji et al.
Takahashi et al., Jap. Jour. Appl. Phys. (Jul. '87), L-1991.
Yoshimura et al., Jap. Jour. Appl. Phys., 27 (Oct. 1988), L-1877.
Komatsu et al., Jap. Jour. Appl. Phys., 27 (Oct. 1988), L-1839.
Moon et al., Appl. Phys. Lett., 55 (Oct. 1989), 1466.

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