Title :
Progress in R&D for coated conductors by TFA-MOD processing
Author :
Izumi, Teruo ; Fuji, Hiroshi ; Aoki, Yuji ; Teranishi, Ryo ; Nakaoka, Koichi ; Matsuda, Junko ; Kitoh, Yutaka ; Yamada, Yutaka ; Shiohara, Yuh ; Iijima, Yasuhiro ; Saitoh, Takashi ; Goto, Tomotaka ; Yoshinaka, Atsuya ; Yajima, Akimasa
Author_Institution :
Supercond. Res. Lab.-ISTEC, Tokyo, Japan
fDate :
6/1/2005 12:00:00 AM
Abstract :
Recent progress in the research and development of the TFA-MOD processing for the coated conductors in Japan was reviewed. For the higher Ic performance, the optimizations both in the calcinations and crystallization steps have taken place. Consequently, the extremely high Ic value of 413 A was achieved by the combination of the information from the above investigations and the use of highly textured CeO2 cap layered substrates. Concerning the development of long tapes, a 8.6-m-long tape with its end-to-end Ic value of 119 A was successfully grown by a reel-to-reel system. Additionally, improvement of the production rate in the calcination step was realized by designing a multi-turn system.
Keywords :
barium compounds; calcination; cerium compounds; critical current density (superconductivity); crystallisation; high-temperature superconductors; superconducting tapes; yttrium compounds; 119 A; 413 A; 8.6 m; CeO2; CeO2 cap layered substrates; TFA-MOD processing; YBaCuO; calcinations; coated conductors; crystallization; multi-turn system design; production rate; reel-to-reel system; research and development; Calcination; Conductors; Crystallization; Degradation; Heating; Laboratories; Research and development; Superconducting films; Superconductivity; Yttrium barium copper oxide; Coated conductors; TFA-MOD process; YBCO; long tape;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.847764
