High T.sub.c superconductor magnetic shields and method of makin

Details High T.sub.c superconductor magnetic shields and method of makin High T.sub.c superconductor magnetic shields and method of makin

1996-10-07

1998-05-05

King, Roy V.

Superconductor technology: apparatus, material, process

High temperature devices, systems, apparatus, com- ponents,...

505490, 505492, 505739, 427 62, 174 35R, 338 32S, H05K 900, H01L 3900

Patent

active

057474257

ABSTRACT:
High T.sub.c superconducting magnetic shields are provided, together with a method of fabricating such shields, wherein the shields exhibit very high critical applied magnetic field values of at least about 50 Gauss at 77 K. In fabrication procedures, a particulate superconducting ceramic oxide (24) (e.g., thallium 2223) is placed within an uniaxial die assembly (10) and subjected to compression while the die is heated via an external heating jacket (26). After formation of a self-sustaining body (24a), the die (10) is additionally heated via the jacket (26). External heating of the die (10) with the superconducting material therein reduces internal stresses within the shield body.

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