Process for producing oxide superconductive material by firing a

Details Process for producing oxide superconductive material by firing a Process for producing oxide superconductive material by firing a

1991-03-11

1992-12-22

Bell, Mark L.

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505742, 264 64, 501152, 501123, H01B 1206, C16, C04B 4189, H01L 3912

Patent

active

051734788

ABSTRACT:
In a process or an apparatus for producing an oxide superconductive material by firing, a gas passage is formed in a firing furnace and a material to be fired, consisting of a ceramic superconductive powder and/or a powder expressing superconductivity when heated, is placed in the gas passage. A gas is passed through the gas passage in one direction to contact with the material. A both ends-opened cylindrical inorganic material is provided in a firing zone of a muffle of a bell-shaped furnace, and a bottomed cylindrical material of a substrate and an oxide superconductive layer is provided inside or outside the both ends-opened cylindrical inorganic material.

REFERENCES:
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patent: 2789808 (1957-04-01), Blackman
patent: 4778382 (1988-10-01), Sakashita
patent: 4854860 (1989-08-01), Hemsath
patent: 4975047 (1990-12-01), Mitsuhashi et al.
Matacotta et al, "Determination of the Oxygen Content in Samples of ClBa.sub.2 Cu.sub.3 O.sub.7-x with Variable Oxygen Content", MRS Symp. Proce., vol. 99, Aug. 17, 1988, pp. 561-565.
Venturini et al, "Paramagnetic Spins in Oxygen-Loaded Ceramic La.sub.2 CuO.sub.4+8 " Extended Abstracts High-Temperature Superconductor II, MRS, Aug. 17, 1988, pp. 47-50.

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