Bismuth-containing superconductors containing radioactive dopant

Details Bismuth-containing superconductors containing radioactive dopant Bismuth-containing superconductors containing radioactive dopant

1990-05-29

1992-02-11

Lieberman, Paul

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505782, 505785, 252517, 423251, 423260, H01B 1200

Patent

active

050876066

ABSTRACT:
A process for producing a sinterable doped superconductive powder which contains a sufficient amount of superconductive compound which is at least coated with sufficient uranium-235 and/or plutonium-239 dopant atoms to enable the sinterable powder to be formed into a sintered superconductive body which can be irradiated with thermal neutrons to produce from about 0.25.times.10.sup.14 to about 5.times.10.sup.14 fission events per cubic centimeter of the resulting irradiated superconductive body, said superconductive compound being selected from the group consisting of Bi.sub.2 CaSr.sub.2 Cu.sub.2 O.sub.8 .+-.x where x ranges from zero to 0.5, Bi.sub.2-y Pb.sub.y Ca.sub.2 Sr.sub.2 Cu.sub.3 O.sub.10.+-.z where y ranges from 0.1 to 0.5 and z ranges from zero to less than 1, and mixtures thereof.

REFERENCES:
patent: 4996192 (1991-02-01), Fleischer
Fleischer et al., "Increased Flux Pinning Upon Thermal-Neutron Irradiation of Uranium Doped YBACu.sub.3 O.sub.7 ", G. E. Research Report 89CRDO47, Apr. 1989.
Bean et al., "Effect of Thermal-Neutron Irradiation on the Superconducting Properties of Nb.sub.3 Al and V.sub.3 Si Doped . . .", Jrnl. of App. Phys., 37(6) May 1966.

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