Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-09-12
1992-12-29
Ryan, Patrick J.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505701, 505702, 505703, 505704, 428688, 428901, 428930, B32B 300
Patent
active
051751410
ABSTRACT:
Bi-based superconducting ceramic films having high Tc's and high critical current densities are formed. The superconducting film is formed on a non-superconducting saubstrate of Bi.sub.2 Sr.sub.1-x Ca.sub.x O.sub.y. Due to crystalline similarity between the superconducting film and the underlying ceramic substrate, the crystalline structure of the film is improved. There are few impurities which contaminate the superconducting film since the constituent elements of the substrate are also the consitutents of the superconducting film.
REFERENCES:
Kan et al., Journal of Materials Research, vol. 5, No. 4, Apr. 1990 p. 731.
Lee et al, Journal of Materials Research, vol. 5, No. 7, Jul. 1990.
Superconductivity of Screen Printed Yba2 Co.sub.3 Oy Thick Film on Y2BaCuO5 Substrates, Jap. Journ. Appl. Phys, vol. 27, No. 8 pp. 21492-21494, Aug. 1988.
Formation of High Tc YBa2Cu.sub.3 O7-8 Films on Y2Ba CuO5 Substrate, Wans et al. Jap. Journ. Appl. Phys, vol. 27, No. 7, pp. L1268-L1270 Jul. 1988.
CA112(4): 28875u, Matei, Res. Symp Proc., 143-9 1988 Gai et al.
Powers T. A.
Ryan Patrick J.
Semiconductor Energy Laboratory Co,. Ltd.
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