Development of REBCO coated conductors by TFA-MOD method with high characteristic in magnetic field

K. Kimura, R. Hironaga, Y. Takahashi, T. Nakanishi, T. Koizumi, T. Hasegawa, K. Higashikawa, M. Inoue, T. Kiss, T. Kato, T. Nakamura, M. Yoshizumi, T. Izumi, Y. Shiohara

研究成果: Contribution to journalArticle査読

12 被引用数 (Scopus)

抄録

Y-{\rm x}\hbox{Gd}-{(1 - {\rm x})}\hbox{Ba}-{2}\hbox{Cu}-{3} \hbox{O} \rm y coated conductors (CCs) with artificial pinning centers (APCs) were fabricated by the trifluoroacetates-metal organic deposition method using a batch heat-treatment process. This process has been industrially applied to fabricate long superconducting tapes that have high critical current (I-{\rm c}). From the viewpoint of applications, the characteristics in magnetic fields become further important, and one solution has been shown previously as introduction of APCs such as BaZrO3. We applied the technique to our CCs fabrication process. The heat-treatment conditions, specifically total gas pressure, oxygen concentration, and crystallization temperature, were optimized for the batch heat-treatment process. As a consequence, fabricated CC showed extremely high characteristic Jc value of 3.5 MA/cm2 in self field, and 0.3 MA/cm2 at 3 T in liquid N2. Moreover, by cross-sectional transmission electron microscopy observation, it was confirmed that the APC was distributed uniformly. Furthermore, the anisotropy of the pinning center is also examined based on the evaluation result of the angular dependence of Jc in 3T.

本文言語英語
論文番号6407816
ジャーナルIEEE Transactions on Applied Superconductivity
23
3
DOI
出版ステータス出版済み - 2013

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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