Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – Superconductor next to layer containing nonsuperconducting...
Reexamination Certificate
2011-04-05
2011-04-05
Kopec, Mark (Department: 1761)
Superconductor technology: apparatus, material, process
High temperature devices, systems, apparatus, com- ponents,...
Superconductor next to layer containing nonsuperconducting...
Reexamination Certificate
active
07919434
ABSTRACT:
The present invention relates to a method of preparing an oxide superconducting film, the method includes reacting a metal acetate containing metal M selected from the group consisting of lanthanum, neodymium and samarium with fluorocarboxylic acid having not less than three carbon atoms, reacting barium acetate with fluorocarboxylic acid having two carbon atoms, reacting copper acetate with fluorocarboxylic acid having not less than two carbon atoms, respectively, followed by refining reaction products, dissolving the reaction products in methanol such that a molar ratio of the metal M, barium and copper is 1:2:3 to prepare a coating solution, and coating a substrate with the coating solution to form a gel film, followed by calcining and firing the gel film to prepare an oxide superconducting film.
REFERENCES:
patent: 5004725 (1991-04-01), Ovshinsky et al.
patent: 5227362 (1993-07-01), Ovshinsky et al.
patent: 5869431 (1999-02-01), Veal et al.
patent: 6256521 (2001-07-01), Lee et al.
patent: 6586042 (2003-07-01), Araki et al.
patent: 6821930 (2004-11-01), Araki et al.
patent: 6974501 (2005-12-01), Zhang et al.
patent: 7615515 (2009-11-01), Araki et al.
patent: 2002/0139960 (2002-10-01), Manabe et al.
patent: 2003/0050195 (2003-03-01), Wiesmann et al.
patent: 2004/0192599 (2004-09-01), Schuh et al.
patent: 2006/0240989 (2006-10-01), Bock et al.
Vanderah et al “Synthesis and characterization of fluoride-substituted RBa2Cu3O7: R=Y, Eu, La”, Mat. Res. Bul. 24(1) Jan. 1989, 121-129.
Suryanarayanan et al “Preparation by sol-gel, structure and superconductivity of pure and fluorinated LaBa2Cu3O7-d”, Physica C 361 (2001) 40-44.
Masuda et al “Sol-gel synthesis and anomalies on magnetic and electric properties of (Bal-x,Lax)3Cu3(O,F)y films”, Journ. Mat. Res. 13(11) Nov. 1998, 3022-26.
IBM Technical Disclosure Bulletin (vol. 32, No. 5B, Oct. 1989).
Honjo, et al., Physica C. 2001, vol. 357-360, pp. 999-1002.
Araki, et al., Supercond. Sci. Technol., 2003, vol. 16, pp. R74-R94.
Araki, et al., Cryogenics, 2001, vol. 41, pp. 675-681.
Araki, et al., Journal of Applied Physics, 2002, vol. 92, No. 6, pp. 3318-3325.
Araki, et al., Supercond. Sci. Technol., 2001, vol. 14, pp. L21-L24.
Araki Takeshi
Hirabayashi Izumi
Nakao Koichi
International Superconductivity Technology Center
Kabushiki Kaisha Toshiba
Kopec Mark
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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