Development of Coated Conductors in Japan
The recent achievements of critical current densities in excess of 1MA/cm2 at 77K in YBCO films deposited over appropriate bi-axially textured buffer layers/metal substrates have stimulated interest in the potential future applications of coated conductors at liquid nitrogen temperature and high magnetic fields, which are called as the next/second generation tape conductors. Several different processes for obtaining the bi-axially textured buffer layers/metal substrates as well as thicker film deposition processes and non-vacuum processes are reviewed. Under the Ministry of International Trade and Industry (MITI) of Japan administration through the New Energy and industrial Technology Development Organization (NEDO) as collaborative research and development of fundamental technologies for superconductivity applications, Superconductivity Research Lab. was given a responsibility of carrying out research and development of the coated conductors starting from the fisical year of 1999. This paper reviews the research goals of the project including the recent development of the related research by individual research group.
KeywordsBuffer Layer Critical Current Density Liquid Phase Epitaxy YBCO Film Coated Conductor
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