Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-09-11
1991-12-31
Kunemund, Robert
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
565701, 565702, 565729, 427 62, 427 63, 156600, 156603, 156610, 156611, 156612, 156613, B32B 900
Patent
active
050772660
ABSTRACT:
A weak-link Josephson junction is of the type employing a thin film of an oxide superconductor, in which a crystal grain boundary produced reflecting an artificial crystal defect is utilized as the weak-link junction. The crystal grain boundary is formed concretely by a method in which atoms of different species are deposited on the predetermined part of the surface of a substrate, the predetermined part of the surface of a substrate is disturbed, or parts of different crystal face orientations are formed at the surface of a substrate, whereupon the superconducting thin film is epitaxially grown on the substrate, or by a method in which the predetermined part of the superconducting thin film, epitaxially grown on a substrate, is diffused with atoms of different species hampering a superconductivity, or the predetermined part of the superconducting thin film is disturbed, whereupon the superconducting thin film is annealed.
REFERENCES:
patent: 4316785 (1982-02-01), Suzuki et al.
patent: 4366494 (1982-12-01), Ohta
patent: 4940693 (1990-07-01), Shappirio et al.
patent: 4962316 (1990-10-01), Jack
Tsai et al., "All-Ceramics Josephson Junctions Operative up to 90.degree. K.", Japanese Journal of Applied Physics, vol. 26, No. 5, May 1987, pp. L701-L703.
Liou et al, "Tunneling Characteristics of Internal Josephson Junctions in YBaCuO.sub.7-8 Thin Films", Brief Reports, The American Physical Society, No. 38, pp. 11805-11808.
Yamashita et al, "Josephson Effects at 77.degree. K., in Grain Boundary Bridge made of Thick Films", Japanese Journal of Applied Physics, vol. 27, Jun. 1988, pp. L1107-L1109.
Chaudhari et al., "Quantum Interference Devices made From Superconducting Oxide Thin Films", Appl. Phys. Lett., 51(3), 20, Jul. 1987, pp. 200-202.
Aida Toshiyuki
Fukazawa Tokuumi
Futamoto Masaaki
Hiratani Masahiko
Honda Yukio
Hitachi , Ltd.
Kunemund Robert
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