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Large-area uniform ultrahigh- [iopmath latex="$J_{c}$"] Jc [/iopmath] YBa2Cu3O [iopmath latex="$_{7-x}$"] 7-x [/iopmath] film fabricated by the metalorganic deposition method using trifluoroacetates

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Ultrahigh- [iopmath latex="$J_{c}$"] Jc [/iopmath] YBa2Cu3O [iopmath latex="$_{7-x}$"] 7-x [/iopmath] (YBCO) films have been successfully fabricated by the metalorganic deposition method using a trifluoroacetate coating solution which is prepared by a newly developed purification technique, the solvent-into-gel (SIG) method. The prepared pure coating solution has less than 0.25% impurities and has a wide flexibility in process conditions to obtain high- [iopmath latex="$J_{c}$"] Jc [/iopmath] YBCO film. Using this feature, we have successfully formed 50 mm diameter YBCO films, which have a critical current density over 10 MA cm [iopmath latex="$^{-2}$"] -2 [/iopmath] (77 K, 0 T) on LaAlO3 single crystalline substrates.

Document Type: Miscellaneous

Affiliations: 1: Superconductivity Research Laboratory, 4-1, Mutsuno 2-chome, Atsuta-ku, Nagoya 456-8587, Japan 2: Superconductivity Research Laboratory, 16-25, Shibaura 1-chome, Minato-ku, Tokyo 105-0023, Japan 3: Superconductivity Research Laboratory, 10-13, Shinonome 1-chome, Koto-ku, Tokyo 135-0062, Japan

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