Bi-based oxide superconducting tunnel junctions and manufacturin

Details Bi-based oxide superconducting tunnel junctions and manufacturin Bi-based oxide superconducting tunnel junctions and manufacturin

1989-09-12

1991-10-29

Carroll, J.

357 4, 357 6, H01L 2712, H01L 3922, H01L 4902

Patent

active

050619713

ABSTRACT:
Josephson junctions have been formed from superconducting oxide ceramic materials conforming to the formula of Bi.sub.2 Sr.sub.2 Ca.sub.n-1 Cu.sub.n O.sub.2n+4 (n=1, 2, 3, . . . ). The tunnel junction is made from an oxide ceramic film conforming to the formula of Bi.sub.2 Sr.sub.1-x Ca.sub.x O.sub.y (1.ltoreq.x.ltoreq., 3.ltoreq.y.ltoreq.4). In light of the similarity of the crystal line structures, the good alignment is established between the superconducting ceramic and the barrier film and superconducting ceramic material having a high degree of crystallinity can be deposited on the barrier film with improved superconductive property.

REFERENCES:
patent: 4768069 (1988-08-01), Talvacchio et al.
M. A. Subramanian et al., "A New High-Temperature Superconductor: Bi.sub.2 Sr.sub.3-x Ca.sub.x Cu.sub.2 O.sub.8+y" Science (Feb. 26, 1988), pp. 1015-1017.

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