Fabrication and growth mechanism of YBCO coated conductors by TFA-MOD process

T. Honjo, Y. Nakamura, R. Teranishi, Y. Tokunaga, H. Fuji, J. Shibata, S. Asada, T. Izumi, Y. Shiohara, Y. Iijima, T. Saitoh, A. Kaneko, K. Murata

研究成果: Contribution to journalConference article査読

55 被引用数 (Scopus)

抄録

In the development for the coated conductors, the trifluoroacetates-metal organic deposition (TFA-MOD) process using the multi-coating method was applied to form thicker YBa2Cu3Oy (YBCO) films on the CeO2 buffered IBAD(Zr2Gd2O 7)/Hastelloy tape. As a result, in the 5 times coated film with 1.38 μm in thickness, the Jc and Ic values achieved to be 1.5 MA/cm2 and 210 A, respectively. Then, we fabricated a 1 m long YBCO tape by the continuous reel-to-reel system. As a result, we confirmed the tape to be homogeneous by XRD analysis. Additionally, we report the theoretical analysis of YBCO growth during post-annealing in the TFA-MOD process considering both the diffusion in the gas boundary layer and the growth kinetics at the precursor/YBCO interface. This model reveals a basic idea of the growth mechanism to define the steady state growth rate, and could explain the experimental results. In addition, it predicts that the growth rate could be estimated from the partial pressure of the water vapor of the inlet gas.

本文言語英語
ページ(範囲)873-881
ページ数9
ジャーナルPhysica C: Superconductivity and its applications
392-396
PART 2
DOI
出版ステータス出版済み - 10 2003
外部発表はい
イベントProceedings of the 15th International Symposium on Superconduc - Yokohama, 日本
継続期間: 11 11 200211 13 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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