Superconducting device and method of producing superconducting t

Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k

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505701, 505702, 505703, 505704, 428426, 428432, 428433, 428688, 428930, B32B 900

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active

051419190

ABSTRACT:
The superconducting device according to the present invention is provided with a superconducting thin film of the Tl-Ba-Ca-Cu oxide deposited on a substrate thereof. Consequently, the device can be produced at a low cost because no rare earth elements are required.
The superconducting thin film according to the present invention is formed by sputtering on substrate from a Tl-Ba-Ca-Cu oxide target by means of the sputtering method, followed by annealing in an oxidizing atmosphere. In this way, according to the present invention, it is possible to produce a superconducting thin film of the Tl-Ba-Ca-Cu oxide in a simple way by using an ordinary sputtering apparatus.

REFERENCES:
patent: 4939119 (1990-07-01), Iwata et al.
Bulk Superconductivity at 120.degree. K. in the Tl-Ca/Ba-Cu-O System by Z. Z. Sheng and A. M. Hermann Nature, vol. 332 Mar. 10, 1988 at pp. 138-139.
Science, vol. 241, Sep. 1988, pp. 1198FF, Halder et al.
Nature, vol. 332, Mar. 31, 1988, pp. 420ff, Subramanian et al.
Technical Applications of Superconductivity . . . -Bogner, Organ of the Haus der Technik e.V., Essen, FRG, Issue 8, Sep.-Oct. 1987.
Phys. Rev. Letts., vol. 60, No. 16, Apr. 18, 1988, pp. 1657 and 1660.
Phys. Rev. Letters, vol. 61, No. 6, Aug. 8, 1988, pp. 750-753.
Applied Physics Letts., vol. 53, No. 15, Oct. 10, 1988, pp. 1434-1436.
Nature, vol. 332, No. 6159, Mar. 3, 1988, pp. 55-58.
CA110(2):14979g, Legoves 1988.

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