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

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2574-2577
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume15
Issue number2 PART III
DOIs
Publication statusPublished - 2005 Jun

Keywords

  • High-temperature superconductors
  • Magnetic field effects
  • Superconducting filaments and wires
  • Superconducting materials measurements

ASJC Scopus subject areas

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

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  • Cite this

    Inoue, M., Kiss, T., Tsuda, Y., Sawa, H., Takeo, M., Awaji, S., Watanabe, K., Iijima, Y., Kakimoto, K., Saitoh, T., Matsuda, J., Tokunaga, Y., Izumi, T., & Shiohara, Y. (2005). High magnetic field properties of critical current density in Y 1Ba2Cu3O7-δ coated conductor fabricated by improved TFA-MOD process. IEEE Transactions on Applied Superconductivity, 15(2 PART III), 2574-2577. https://doi.org/10.1109/TASC.2005.847655