Effect of metal composition ratios of solutions on Jc-B properties of REBCO coated conductors fabricated by advanced TFA-MOD process

Y. Kitoh, J. Matsuda, K. Suzuki, K. Nakaoka, Y. Sutoh, A. Nakai, T. Nakanishi, M. Yoshizumi, T. Machi, A. Yajima, Y. Yamada, T. Izumi, Y. Shiohara

研究成果: ジャーナルへの寄稿学術誌査読

5 被引用数 (Scopus)

抄録

Metal organic deposition using trifluoroacetates (TFA-MOD) is expected as a low cost process of high Tc superconducting coated conductors, since this method does not need any high vacuum system. The advanced TFA-MOD process enabled us to produce YBa2Cu3O7-y (YBCO) films on IBAD buffered metallic substrates (PLD-CeO2/IBAD-GZO/Hastelloy) with high critical current density (Jc) values over 2 MA/cm2 under the conditions of T = 77 K and the self fields. REBCO (RE:Y and Sm) films with different compositions were fabricated on the substrates by the advanced TFA-MOD process using TFA salts of Y, Sm, Ba and Cu-Naphthenate. The films which had excess amounts of (Sm), (Sm and Cu) or (Y and Cu) in addition to the stoichiometric 123 composition (Y:Ba:Cu = 1:2:3) showed higher Jc values (>3 MA/cm2) at 77 K under the self fields compared with that of the stoichiometric composition film. In addition, the Jc values of the (Sm) or (Sm and Cu) added films were also improved under the high magnetic fields compared with that of the stoichiometric composition film. The origins of pinning centers were discussed from the perspectives of microstructures, crystal growth mechanisms, and so on.

本文言語英語
ページ(範囲)523-526
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
463-465
SUPPL.
DOI
出版ステータス出版済み - 10月 1 2007
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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