Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1991-01-28
1992-03-17
Beck, Shrive
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505741, 505742, 427 62, 427282, B05D 302, B05D 512
Patent
active
050968785
ABSTRACT:
A method for making superconductive ceramics laminates comprises forming a thick film of a composite oxide comprising bismuth, strontium, calcium, copper and oxygen on a flat plane of a substrate, and orienting and crystallizing the thus formed film by heat treatment to cause the c-axis of composite oxide crystals to be substantially perpendicular to said flat plane of said substrate. An intermediate layer formed of a noble metal, MgO, SrTiO.sub.3, yttria-stabilized zirconia or an oxide of a superconductive ceramics-constituting element may be interposed between the film and the substrate.
REFERENCES:
Tachikawa et al., "Preparation of Y--Ba--Cu Oxide Superconducting Composite Tapes by a Diffusion Process", MRS vol. 99 (Nov. 1987) pp. 727-730.
Gurvitch et al., "Preparation and Substract Reactions of Superconducting Y--Ba--Cu--O Films", Appl. Phys. Lett. 51 (13) Sep. 1987, pp. 1027-1029.
Hashimoto et al., "Superconductivity and Substrate Interaction of Screen-Printed Bi--Sr--Ca--Cu--O Films", Jpn J. Appl. Phys. 27 (3) Mar. 1988, L384-386.
Nakao et al., "Magnetron Sputtering of Bi--Ca--Sr--Cu--O Thin Films With Superconductivity Above 80 k", Jpn J. Appl. Phys. 27 (3) Mar. 1988, L378--380.
Chien et al., "Effect of Noble Metal Buffer Layers on Superconducting YBa.sub.2 Cu.sub.3 O.sub.7 Thin Films", Appl. Phys. Lett. 51 (25) Dec. 1987, pp. 2155-2157.
Koinuma et al., "Some Problems in the Preparation of Superconducting Oxide Films on Ceramic Substrates", Jpn. J. Appl. Phys. 26 (5) May 1987, L763-765.
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Harker et al., "Reactive Ion Beam Deposition of Thin Films in the Bismuth-Calcium-Strontium-Copper Oxide Ceramic Superconductor System", Appl. Phys. Lett. 52 (25) Jun. 1988, pp. 2186-2187.
Lorentz et al., "Oriented High-Temperature Superconducting Bi--Sr--Ca--Cu--O Thin Films Prepared by Ion Beams Deposition", Appl. Phys. Lett. 53 (17) Oct. 1988, pp. 1654-1656.
Agostinelli et al., "Superconducting Thin Films in the Bi--Sr--Ca--O System by the Decomposition of Metallo-Organic Precursors", Physica C156 (1988) pp. 208-212.
Fukutomi Masao
Hoshino Kazutomo
Takahara Hidefusa
Yamazaki Shigeru
Beck Shrive
King Roy V.
Mitsui Kinzoku Kogyo Kabushiki Kaisha
National Research Institute for Metals
Science and Technology Agency
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