High magnetic field properties of critical current density in Y 1Ba2Cu3O7-δ coated conductor fabricated by improved TFA-MOD process

Masayoshi Inoue, Takanobu Kiss, Yuhki Tsuda, Hirotaka Sawa, Masakatsu Takeo, Satoshi Awaji, Kazuo Watanabe, Yasuhiro Iijima, Kazuomi Kakimoto, Takashi Saitoh, Junko Matsuda, Yoshitaka Tokunaga, Teruo Izumi, Yuh Shiohara

研究成果: Contribution to journalArticle査読

8 被引用数 (Scopus)

抄録

Current transport characteristics in a Y1Ba2Cu 3O7-δ (YBCO) coated conductor fabricated by a trifluoroacetates-metal organic deposition (TFA-MOD) process were investigated over a wide range of temperature and magnetic field up to 25 T. Improved TFA-MOD process was successfully introduced for the better property of critical current density, Jc, at high magnetic fields. The Jc and critical current, Ic, values of multi-coated film with 1.2 μm thickness and 1 cm width were 2.1 MA/cm2 and 251 A at 77 K in self-field. Additionally, the superior Jc properties remained even at high magnetic fields over 20 T and lower temperature, e.g. Jc value at 30 K in 25 T was 1.0 MA/cm2. The Jc value was about 2.5 times higher than those of previous TFA-MOD process at wide range of magnetic field. Moreover, the statistical distribution of Jc in the conductor was also estimated within a framework of the percolation model. The uniformity in the YBCO coated conductor was improved by optimizing the TFA-MOD process.

本文言語英語
ページ(範囲)2574-2577
ページ数4
ジャーナルIEEE Transactions on Applied Superconductivity
15
2 PART III
DOI
出版ステータス出版済み - 6 2005

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
  • 電子工学および電気工学

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