High temperature superconductor current leads

Details High temperature superconductor current leads High temperature superconductor current leads

1991-01-16

1995-06-20

Picard, Leo P.

Electricity: conductors and insulators

Conduits, cables or conductors

Superconductors

505887, 505884, 174 154, 174 155, 1741251, H01B 1200

Patent

active

054260949

ABSTRACT:
An electrical lead having one end for connection to an apparatus in a cryogenic environment and the other end for connection to an apparatus outside the cryogenic environment. The electrical lead includes a high temperature superconductor wire and an electrically conductive material distributed therein, where the conductive material is present at the one end of the lead at a concentration in the range of from 0 to about 3% by volume, and at the other end of the lead at a concentration of less than about 20% by volume. Various embodiments are shown for groups of high temperature superconductor wires and sheaths.

REFERENCES:
patent: 4980964 (1991-01-01), Boeke
patent: 4983572 (1991-01-01), DeWith
patent: 4983574 (1991-01-01), Meyer
Mishishita et al., Ag-Doped Bi--Sr--Ca--Cu--O Superconductor Prepared by Floating Zone Method, 1989, pp. 273-276.
Yokoyama et al. "Low resistivity contacts to YBa.sub.2 Cu.sub.3 O.sub.7-y superconductors using Ag.sub.2 O powder", Cryogenics 1988 vol. 28 Nov., pp. 734-736.
Ottowitz "Superconductive wire", Wire and Wire products vol. 39, No. 3, Mar. 1964, pp. 407, 433 and 435.
Jim et al. "Low-resistivity contacts to bulk high Tc Superconductors", Appl. Phys. Lett. 54(25), 19 Jun. 1989, pp. 2605-2607.

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