Process for producing compound oxide high temperature supercondu

Details Process for producing compound oxide high temperature supercondu Process for producing compound oxide high temperature supercondu

1989-10-26

1992-03-31

Liberman, Paul

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

252521, 423604, 423624, 423635, 501123, 501152, 505779, 505783, C01F 1102, C01F 1700, C01G 302, C01G 1500

Patent

active

051008661

ABSTRACT:
A superconducting material and a process for producing a superconducting material comprising a compound oxide represented by the general formula:

REFERENCES:
patent: 4870052 (1989-09-01), Engler et al.
patent: 4962083 (1990-10-01), Hermann
Murphy "New Superconducting Cuprate Perovskites", Phys. Rev. Lett. vol. 58 (18), May 4, 1987, pp. 1888-1890.
Gruen "Formation of Perovskite Surface Layers by Oxidation of Cu-La-Sr . . . ", J. Electrochemical Soc., Jun. 1987, pp. 1588-1589.
Nakamura "Oxygen Deficiency and Superconducting Properties of Yttrium Oxide Compounds", MR5 Conference: Superconductivity Apr. 1987, pp. 8239-8242.
Cava "Bulk Superconductivity at 91K in Single-Phase . . . Ba.sub.2 YCu.sub.3 O.sub.9-8", Phys. Rev. Lett., vol. 58 (16), Apr. 20, 1987, pp. 1676-1679.
Hasegawa "High Tc Superconductivity of (La.sub.1-x Sr.sub.x).sub.z Cu O.sub.4 -Effect of . . . ", Jap. Jnl. Appl. Phys. vol. 26(4) Apr. 1987, pp. L337-L338.
Sheng et al., "Superconductivity at 90K in the Tl-Ba-Cu-O System", Phys. Rev. Lett., vol. 60, No. 10, 1988, pp. 937-940.
Hazen et al., "100-K Superconducting Phases in the Tl-Ca-Ba-Cu-O System", Phys. Rev. Lett., vol. 60, No. 16, Apr. 18, 1988, pp. 1657-1660.
Sheng et al., "New 120 K Tl-Ca-Ba-Cu-O Superconductor", Appl. Phys. Lett., May 16, 1988, pp. 1738-1740.
Sheng, Z. Z. et al., "Superconductivity in the Rare-Earth-Free Tl-Ba-Cu-O System Above Liquid Nitrogen Temperature"; Nature, Mar. 3, 1988, pp. 55-58.
Sheng et al., "Bulk Superconductivity at 120K in the Tl-Ca/Ba-Cu-O System", Nature, Mar. 10, 1988, pp. 138-139.
Gao et al., "Bulk Superconductivity in Tl.sub.2 CaBa.sub.2 Cu.sub.2 O Up to 120K", Nature, Apr. 14, 1988, pp. 623-624.

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