Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1988-05-02
1989-10-24
Stoll, Robert L.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
423593, 423604, 423636, 423639, 423337, 423263, 502525, 502355, 501123, 501126, 501152, 501 1, 501 94, 252521, C01G 302
Patent
active
048762407
ABSTRACT:
A process for the preparation of copper oxide superconductors which comprises (1) mixing copper nitride, an oxidizing agent such as barium peroxide, and yttrium oxide; (2) forming pellets of the aforementioned mixture; (3) heating the pellets; and (4) thereafter cooling the pellets. The process yields copper oxide superconducting compounds in a purity of from about 60 to over 95 percent.
REFERENCES:
Chemical and Engineering New, Jan. 18, 1988, p. 23.
Japanese Journal of Applied Physics, vol. 26, No. 5, May 1987, pp. L858-859.
Materials and Processing Report, "Update Report on High TC Superconductors", vol. 2, No. 4, Jul. 1987, pp. 1-4.
Materials Research Society Symposium Proceedings, vol. 99, High Temperature Superconductors, Kayser et al, "Preparation of High TC YBa.sub.2 Cu.sub.3 O.sub.7-x Powders from Nitrate and Oxalate Precursors", 1988, pp. 159-164.
Materials Research Society Symposium Proceedings, vol. 99, High Temperature Superconductors, Voigt et al., "A Hydroxycarbonate Route to Super Conductor Precursor Powders", 1988, pp. 635-638.
Japanese Journal of Applied Physics, vol. 26, No. 5, May 1987, pp. L836-L837, Saito et al., "Superconductivity of Sr-La-Cu Oxides Prepared by Coprecipitation Method".
Materials and Processing Report, vol. 2, No. 10, 1988, pp. 1-9.
Proceeding of Symposiums of the 1987 Spring Meeting of Mat. Res. Soc., vol. EA-11, Morris et al., Mobile Oxygen and Isotope Effects in the High Temperature Superconductive YBa.sub.2 Cu.sub.3 O.sub.7.
Mat. Res. Soc. Symp. Proc., vol. 99, 1988, "Advantages of Barium Peroxide in the Powder Synthesis of Perovskite Superconductors", pp. 615-618, Hepp et al.
Japanese Journal of Applied Physics, vol. 26, No. 55, 1987, pp. L736-737, Kawai et al., "Preparation of High-Tc Y-Ba-Cu-O Superconductor".
Japanese Journal of Applied Physics, vol. 26, No. 5, 1987, pp. L1159-L1160, Fujiki et al., "Preparation of a High-Tc Y-Ba-Cu-O Superconductor using Collodial Method".
Z. Phys. B Condensed Matter, 64, pp. 189-193, 1986, Bednorz et al., "Possible High TC Superconductivity in the Ba-La-Cu-O System".
"Manufacture and Testing of High Tc-Super Conducting Materials", Yarar et al., Advanced Ceramic Materials, vol. 2, No. 3B, 1987, pp. 372-379.
Advanced Ceramic Materials, vol. 2, No. 3B, 1987, Cima et al., "Powder Processing for Microstructural Control in Ceramic Superconductors", pp. 329-336.
Advanced Ceramic Materials, vol. 2, No. 3B, 1987, pp. 656-661, "Thermal Analysis of Ba.sub.2 YCu.sub.3 O.sub.1-x at 700-1000 C in Air", Cook et al.
Japanese Journal of Applied Physics, vol. 26, No. 5, May 1987, "Single Crystal Preparation of Ba.sub.2 YCu.sub.3 O.sub.x from Nonstoichiometric Melts", Takekaw et al., pp. L851-853.
Japanese Journal of Applied Physics, vol. 26, No. 4, Apr. 1987, pp. L498-501, "X-Ray and Electron Microscopic Study of a High Temperature Superconductor, etc., ".
Chemistry of High-Temperature Superconductors, Chapter 7, Davison et al., and Chapter 11, Holland et al., American Chemical Society, 1987, pp. 65-78, and pp. 102-113.
Japanese Journal of Applied Physics, vol. 26, No. 5, May 1987, pp. L858-L859.
Materials and Processing Report, "Update Report on High T.sub.c Superconductors", vol. 2, No. 4, Jul. 1987, pp. 1-4.
Harvey Paige C.
Pagazzo E. O.
Stoll Robert L.
Xerox Corporation
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