Printing method of forming oxide superconducting films on La.sub

Details Printing method of forming oxide superconducting films on La.sub Printing method of forming oxide superconducting films on La.sub

1989-10-16

1991-12-24

Beck, Shrive

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505741, 427 62, 427282, B05D 302, B05D 512

Patent

active

050752820

ABSTRACT:
A method of manufacturing a conducting or superconducting film comprises the steps of providing a powdered composition of complex oxide conducting or superconducting materials represented by the general formula: (La.sub.l-x M.sub.x).sub.y CuO.sub.4-.delta., where M is a member selected from the group of alkali earth metals and mixtures of the alkali earth metals: x=0 to 1. y=1.5 to 2.5, adding an organic solvent to the powdered composition to form a kneaded paste, printing the paste on a substrate before drying and firing.

REFERENCES:
patent: 4264647 (1981-04-01), Trevorrow
patent: 4316785 (1982-02-01), Suzuki et al.
Harris "Substrates", Chapt. 9, Thin Film Technology by Berry et al., R. E. Krieger Publishing Company 1979, New York.
Bednorz et al., "Possible High T.sub.c Superconductivity in the Ba-La-Cu-O System", Z. Phys. B-Condensed Matter 64 p. 189 (1986).
Cava et al., "Bulk Superconductivity at 36 K in La.sub.1.8 Sr.sub.0.2 CuO.sub.4 ", Phys. Rev. Lett. vol.58(9) p. 408 (1987).
Wu et al., "Superconductivity at 93 K in a New Mixed-Phase Y-Ba-Cu-O Compound System at Ambient Pressure", Phys. Rev. Lett. vol. 58(9), p. 908 (1987).
Maeda et al., "A New High-T.sub.c Oxide Superconductor without a Rare Earth Element", Jpn. J. Appl. Phys. vol. 27(2) Feb. 1988 L209-210.
Hashimoto et al., "Superconductivity and Substrate Interaction of Screen-printed Bi-Sr-Ca-Cu-O films", Jpn. J. Appl. Phys. vol. 27(3), Mar. 1988, L384-386.
Grant et al., "Evidence for Superconductivity in La.sub.2 Cu O.sub.4 ", Physical Rev. Lett., vol. 58(23) Jun. 1987, pp. 2482-2485.

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