In-Field <i>J</i><sub>c</sub> Properties in the Longitudinal Magnetic Field of BaHfO<sub>3</sub>-Doped-Multilayered SmBa<sub>2</sub>Cu<sub>3</sub>O<i><sub>y</sub></i> Films on Metal Tapes for the Cable Application

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  • Sugihara Kazuki
    Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University
  • Ichino Yusuke
    Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University
  • Tsuchiya Yuji
    Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University
  • Ichinose Ataru
    Central Research Institute of Electric Power Industry
  • Yoshida Yutaka
    Department of Energy Engineering and Science, Graduate School of Engineering, Nagoya University

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  • ケーブル応用に向けた金属テープ上BaHfO<sub>3</sub>添加SmBa<sub>2</sub>Cu<sub>3</sub>O<i><sub>y</sub></i>多層薄膜の縦磁場中<i>J</i><sub>c</sub>特性
  • ケーブル応用に向けた金属テープ上BaHfO₃添加SmBa₂Cu₃O[y]多層薄膜の縦磁場中J[c]特性
  • ケーブル オウヨウ ニ ムケタ キンゾク テープ ジョウ BaHfO ₃ テンカ SmBa ₂ Cu ₃ O[y]タソウ ハクマク ノ タテ ジバ チュウ J[c]トクセイ

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Abstract

<p>In the longitudinal magnetic field state, critical current density (Jc) of a superconductor enhances compared with the Jc in self-field and it is called as Jc gain. We have reported Jc gain in BaHfO3-doped-multilayered (ML) SmBa2Cu3Oy(Sm123) films on oxide single crystalline substrates. In this study, we aim for the Jc gain appearance in ML-Sm123 films on IBAD-MgO metal tapes for power cable application. We observed the Jc gain on metal tapes with good reproducibility. From viewpoints of the flux pinning and super-current flow, important factors for the Jc gain at 77 K were higher interface density, self-organized BHO nanorods with larger diameter, and the reduction of a ML-structure disturbances.</p>

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