Multilayer super-conducting shield and method of manufacturing s

Details Multilayer super-conducting shield and method of manufacturing s Multilayer super-conducting shield and method of manufacturing s

Filed on

1985-08-05

Date issued

1986-03-04

Examiner

Terapane, John F.

Patent Class

Chemistry: electrical and wave energy

SubClass

Processes and products

SubSubClass

Vacuum arc discharge coating

Other Related Categories

174 35MS, 174126S, 204192C, 204192EC, 29599, 427 62, 428 35, 428611, 428662, 428674, 428930, H05K 900, C23C 1424, H01L 3912, H01L 3924

Type

Patent

Status

active

Patent number

H00000396

Description

ABSTRACT:
A multi-layer superconducting shield for shielding superconducting electronic devices from stray magnetic fields. In one embodiment the shield of the present invention comprises alternating concentric layers of a transition metal having a high transition temperature and a metal alloy formed from copper and a non-transition metal, said transition metal and metal alloy forming an interface, and a layer of A.sub.3 B-compound structure metal at the interface of said transition metal and metal alloy. The A.sub.3 B-compound structure metal is a high transition temperature superconductor.
In a second embodiment the superconducting shield comprises a thin film of a high transition temperature superconducting nitride compound deposited on a cylindrical substrate. The nitride is deposited by reactive rf sputtering.

REFERENCES:
Gubser et al. "Multilayer Nb.sub.3 Sn Superconducting Shields", IEEE Transactions on Magnetics, vol. MAG-21, No. 2, Mar. 1985, pp. 320-323.
Clem, "Superconducting Magnetic Shielding for Squid-Based Systems Operating in Low Fields", IEE Transactions on Magnetics, vol. Mag-21, No. 2, Mar. 1985, pp. 606-609.

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