Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1990-09-19
1992-04-21
Lieberman, Paul
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505779, 505780, 212521, H01B 1200
Patent
active
051068290
ABSTRACT:
A substantially single phase superconducting composition is formed from a of 1:2:3 molar ratio of fine powders of a superconducting rare earth oxide, CuO, and BaCo.sub.3. The mixed powders and shaped articles formed from the mixed powders are calcined, sintered, and cooled in an oxygen containing atmosphere. The cooling step is done slowly to convert the sample to the orthorhombic structure and to improve the superconducting properties. The article formed is a substantially single phase superconducting composition.
REFERENCES:
patent: 4992415 (1991-02-01), Ashok et al.
Melling, "Powder Preparation & Thermal Properties of 1-2-3 Y BaCu Oxide . . ", Int. Crygenic Mat'ls Conf., Jun. 14-18, 1987, pp. 1-8.
Cava, "Bulk Superconductivity at 91K in Single-Phase Oxy . . . ", Phys. Rev. Lett., vol. 58, No. 16, Apr. 20, 1987.
Blendell, "Relationship of Electrical, Magnetic, and Mechanical . . . ", ACS Symposium Series: Chem of High Tc Super., Sep. 1987, pp. 240-260.
Amarakoon, "Synthesis, Characterization and Fabrication . . . ", Adv. Ceramic. Mat'l, vol. 2, No. 3B Special Issue, Jul. 1987, pp. 539-555.
Kumakura, "Large Magnetization in YBa.sub.2 Cu.sub.3 O.sub.7 Prepared by Sintering . . . ", Jap. Jnl. of Appl. Phys. Lett., vol. 27, No. 2, Feb. 1988, pp. L188-L190.
Yao, "Superconductivity in Pseudo-Quaternary System", Mat. Res. Soc. Symp. Proc., vol. 99, Dec. 1987, pp. 543-547.
Hsieh, "Critical Temperature and Critical Current in Phases-Mixed . . . ", Mat. Res. Soc. Symp. Proc., vol. 99, Dec. 1987, pp. 251-254.
Matacotta, "Determination of the Oxygen Content in Samples . . . ", Mat. Res. Soc. Symp. Proc., vol. 99, Dec. 1987, pp. 561-565.
Karpinski, "Equilibrium Pressures of Oxygen Above YBa.sub.2 Cu.sub.3 O . . . ", Nature, vol. 331, Jan. 21, 1988.
Noto, "High Field Properties of Superconducting YxBa.sub.1-x Cu Oxide . . .", Jap. Jnl. of Appl. Phys., vol. 26, No. 5, May 1987, pp. L802-L803.
Gubser Donald U.
Lawrence Steven H.
Osofsky Michael S.
Quadri Syed B.
Toth Louis E.
Edelberg Barry A.
Lieberman Paul
McDonnell Thomas E.
Swope Bradley A.
The United States of America as represented by the Secretary of
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