Method of preparing 2223 phase (Bi,Pb)-Sr-Ca-Cu-O superconductin

Details Method of preparing 2223 phase (Bi,Pb)-Sr-Ca-Cu-O superconductin Method of preparing 2223 phase (Bi,Pb)-Sr-Ca-Cu-O superconductin

1992-06-26

1994-07-19

King, Roy V.

Superconductor technology: apparatus, material, process

Processes of producing or treating high temperature...

Coating

505704, 505730, 505731, 505732, 505742, 505734, 505474, 505475, 427 62, 4274192, 4274193, 427596, 427404, 4272553, 20419224, B05D 512, C23C 1600

Patent

active

053309669

ABSTRACT:
An oxide superconducting layer is formed on a base material of silver, whose single side is coated with MgO, or single-crystalline MgO for depositing a Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 phase in a crystallographically oriented state by sputtering, CVD or laser ablation. Metal lead or lead oxide is then laid thereon by sputtering to obtain a two-layer structure, and the two-layer structure is heat treated in the atmospheric air. Thus, a bismuth oxide superconducting film, which is excellent in crystal orientation as well as denseness and thereby having high critical current density, is formed on the base material.

REFERENCES:
patent: 5051398 (1991-09-01), Higaki et al.
Kampwirth et al, "Properties of sputtered superconducting films of Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.x made by low-temperature in situ growth," Appl. Phys. Lett. 55(20) Nov. 1989, pp. 2135-2137.
Endo et al, "Preparation of As-deposited Bi-Sr-Ca-Cu-O films with high Tc superconducting phase by metalorganic chemical vapor deposition," Jpn. J. Appl. Phys. vol. 29, No. 2, Feb. 1990 pp. L294-L297.
A. Tanaka et al., "Pb-doped Bi-Sr-Ca-Cu-O Thin Films", 54 Applied Physic Letters 14, pp. 1362-1364 (Apr. 1989).
J. M. Zhang, et al., "Organometallic Chemical Vapor Deposition of Superconducting, High T.sub.c Pb-doped Bi-Sr-Ca-Cu-O Thin Films", 55 Applied Physics Letters 18, pp. 1906-1908 (Oct. 1989).
T. Yotsuya et al., "Fabrication of Bi(Pb)SrCaCuO Thin Film of High-Tc Phase", 28 Japanese Journal of Applied Physics 6, Part 2, pp. L972-L974 (Jun. 1989).
Takano et al, "Annealing in a PbO atmosphere for high Tc superconductivity of Bi-Sr-Ca-Cu-O films", Appl. Phys. Lett. 55(8) Aug. 1989, pp. 798-800.
Hayakawa et al, "Effects of Film Thickness and Annealing Conditions on 2223 Phase Growth in BSCCO Films Produced by Pb Vapor Doping", Jpn. J. Appl. Phys. 29(6)Jun. 1990 L943-946.

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