Superconducting element having an intermediate layer with multip

Details Superconducting element having an intermediate layer with multip Superconducting element having an intermediate layer with multip

1995-03-24

1997-05-13

Ryan, Patrick

Superconductor technology: apparatus, material, process

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

Superconductor next to layer containing nonsuperconducting...

428688, 428702, 505193, 505701, 505702, 505239, 257 33, 257 35, B32B 900

Patent

active

056292678

ABSTRACT:
A superconducting element is disclosed which comprises a lower superconducting layer, an upper superconducting layer, and an intermediate layer interposed between the lower and upper superconducting layers. The lower and upper superconducting layers are both form of a superconducting cuprate. The intermediate layer is formed of a layered cuprate containing in the crystal structure thereof multiple fluorite blocks represented by the formula:

REFERENCES:
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patent: 5106819 (1992-04-01), Takemura
patent: 5389603 (1995-02-01), Batlogg
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"All a-axis oriented YBa.sub.2 Cu.sub.3 O.sub.7-y -PrBa.sub.2 Cu.sub.3 O.sub.7-z -YBa.sub.2 Cu.sub.3 O.sub.7-y Josephson devices operating at 80 K", J.B. Barner et. al., Appl. Phys. Lett., 59(6):742-744(1991).
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Synthesis and Crystal Structure of Pb.sub.2 Sr.sub.2 (Ln, Ce).sub.n Cu.sub.3 O.sub.6+2n+.delta. and Pb(Ba,Sr).sub.2 Ln,Ce).sub.n Cu.sub.3 O.sub.5+2n+.delta. (Ln=Y,n=3,4, . . . and 0<.delta.<2.0), Layered Structure Compounds With Multiple Fluorite Layers, Tokiwa et al., Physica C 181:311-319 (1991).
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