Enhancement of in-field current transport properties in GdBCO coated conductors by BaHfO3 doping

Masayoshi Inoue, Yoshimasa Yamaguchi, Takashi Sakakibara, Kazutaka Imamura, Kohei Higashikawa, Takanobu Kiss, Satoshi Awaji, Kazuo Watanabe, Hiroshi Tobita, Masateru Yoshizumi, Teruo Izumi

研究成果: ジャーナルへの寄稿記事

16 引用 (Scopus)

抄録

We have investigated the in-field current transport property in BaHfO 3 doped GdBa2Cu3O7-δ coated conductors in a wide range of temperatures and magnetic fields. Significant improvement of in-field critical current Ic was observed, e.g., Ic@77 K,3T = 93A/cm-w, Ic@20 K 17T = 700 A/cm-w, which is a comparable value to that of Nb3Sn wire at 4.2 K. Enhancement of the irreversibility field was also observed. These results suggest that BaHfO 3 is one of the most promising materials as effective artificial pinning centers and leads to the enhancement of in-field Ic. Furthermore, we have also shown that our analytical expression of electric field versus current density characteristics based on the percolation transition model [1-3] agrees well with the experimental results over a wide range of magnetic fields and temperatures. This analytical expression is useful for the design of superconducting devices because this allows us to predict the current carrying capability of coated conductors not only Jc but also n-value at arbitrary operating conditions of temperature and magnetic field.

元の言語英語
記事番号6461926
ジャーナルIEEE Transactions on Applied Superconductivity
23
発行部数3
DOI
出版物ステータス出版済み - 4 22 2013

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Transport properties
conductors
transport properties
Doping (additives)
Magnetic fields
augmentation
Temperature distribution
temperature distribution
magnetic fields
Superconducting devices
superconducting devices
Critical currents
critical current
Current density
Electric fields
wire
Wire
current density
electric fields
Temperature

All Science Journal Classification (ASJC) codes

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

これを引用

Enhancement of in-field current transport properties in GdBCO coated conductors by BaHfO3 doping. / Inoue, Masayoshi; Yamaguchi, Yoshimasa; Sakakibara, Takashi; Imamura, Kazutaka; Higashikawa, Kohei; Kiss, Takanobu; Awaji, Satoshi; Watanabe, Kazuo; Tobita, Hiroshi; Yoshizumi, Masateru; Izumi, Teruo.

:: IEEE Transactions on Applied Superconductivity, 巻 23, 番号 3, 6461926, 22.04.2013.

研究成果: ジャーナルへの寄稿記事

Inoue, M, Yamaguchi, Y, Sakakibara, T, Imamura, K, Higashikawa, K, Kiss, T, Awaji, S, Watanabe, K, Tobita, H, Yoshizumi, M & Izumi, T 2013, 'Enhancement of in-field current transport properties in GdBCO coated conductors by BaHfO3 doping', IEEE Transactions on Applied Superconductivity, 巻. 23, 番号 3, 6461926. https://doi.org/10.1109/TASC.2013.2247456
Inoue, Masayoshi ; Yamaguchi, Yoshimasa ; Sakakibara, Takashi ; Imamura, Kazutaka ; Higashikawa, Kohei ; Kiss, Takanobu ; Awaji, Satoshi ; Watanabe, Kazuo ; Tobita, Hiroshi ; Yoshizumi, Masateru ; Izumi, Teruo. / Enhancement of in-field current transport properties in GdBCO coated conductors by BaHfO3 doping. :: IEEE Transactions on Applied Superconductivity. 2013 ; 巻 23, 番号 3.
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