METHOD FOR POLISHING TAPE SUBSTRATE FOR OXIDE SUPERCONDUCTOR, OXIDE SUPERCONDUCTOR, AND BASE MATERIAL FOR OXIDE SUPERCONDUCTOR

WIPO Patent Application WO/2008/016073

A1

Provided is a surface polishing method for improving crystalline orientation of the surface of a tape-shaped metal base material so as to improve the critical current of a superconducting thin film. An oxide superconductor is composed of the tape-shaped base material, an intermediate layer formed on the tape-shaped base material, and an oxide superconducting thin film layer formed on the intermediate layer. In the method for polishing the surface of the tape-shaped base material to be polished, the surface to be polished is polished by continuously running the tape-shaped base material. The polishing step includes initial polishing and final polishing. At the end of the step, the surface average roughness (Ra) of the surface to be polished is 2 nanometers or less, and in-plane orientation (ΔΦ) of the intermediate layer is 5° or less.

HORIMOTO SANAKI (JP)
NAGAMINE TAKUYA (JP)
WATANABE TAKEHIRO (JP)
MUROKAWA FUMI (JP)
HORIE YUJI (JP)
KUMASAKA NORIYUKI (JP)
HOSOI MASAHIRO (JP)

PCT/JP2007/065053

February 07, 2008

August 01, 2007

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NIHON MICROCOATING CO LTD (JP)
HORIMOTO SANAKI (JP)
NAGAMINE TAKUYA (JP)
WATANABE TAKEHIRO (JP)
MUROKAWA FUMI (JP)
HORIE YUJI (JP)
KUMASAKA NORIYUKI (JP)
HOSOI MASAHIRO (JP)

H01B13/00; B24B7/13; B24B21/00; B24B37/00; C01G1/00; H01B12/06

JP2005056754A	2005-03-03
JP2005056591A	2005-03-03
JP2003095666A	2003-04-03
JPH0952793A	1997-02-25

TAKEUCHI, Sumio (Nishishimbashi 1-chome Minato-k, Tokyo 03, JP)

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