Method of preparing Pb-Sr-Ca-Ln-Ca-O metal oxide superconductor

Details Method of preparing Pb-Sr-Ca-Ln-Ca-O metal oxide superconductor Method of preparing Pb-Sr-Ca-Ln-Ca-O metal oxide superconductor

1991-11-01

1993-09-14

Lieberman, Paul

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

423592, 423604, 505725, 505738, C01B 1336, C01F 1102, C01G 302, C01G 2102

Patent

active

052448720

ABSTRACT:
An oxide superconductor having the following formula:

REFERENCES:
patent: 4898851 (1990-02-01), Michel
patent: 4962082 (1990-10-01), Barboux
patent: 5011822 (1991-04-01), Barder
patent: 5077265 (1991-12-01), Ritter
Zandbergen "Electron Microscopy in Pb.sub.2 Sr.sub.2 Ca.sub.0.5 Y.sub.0.5 Cu.sub.3 O.sub.x" Physica C v. 158 Apr. 1989 pp. 155-172.
Subramanian "Superconductivity Near Liquid Nitrogen . . . in PbSrRCaCuO . . . " Physica C v. 157, Jun. 1, 1989 pp. 124-130.
Itoh "An Improved Coprecipitation Method for . . . BiPbSrCaCuO . . . " Chem. Lett. v. 3 1990 pp. 429-432.
Cava et al. "Superconductivity near 70K in a new family of layered copper oxides" Nature v. 336 Nov. 17, 1988 pp. 211-214.
White et al. "Preparation and Microstructural Investigation of the High-Tc Superconductor Pb.sub.2 Sr.sub.2 Y.sub.0.5 Ca.sub.0.5 Cu.sub.3 O.sub.8 " Aust. J. Phys. v. 42, 1989, pp. 551-563.
Tokiwa et al. "Synthesis and crystal structure of Pb.sub.2 Sr.sub.2 (Ln,Ce).sub.n Cu.sub.3 O.sub.6+Zn+8 and Pb(Ba,Sr).sub.2 (Ln,Ce).sub.n Cu.sub.3 O.sub.5+2n+8 (Ln=Y, n=3, 4 . . . and 0.ltoreq.8.ltoreq.2.0), layered structure compounds with multiple fluorite layers", Physica C v. 181 Oct. 10, 1991, pp. 311-319.

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