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High critical current density and high-tolerance superconductivity in high-entropy alloy thin films

Author

Listed:
  • Soon-Gil Jung

    (Sungkyunkwan University
    Sungkyunkwan University)

  • Yoonseok Han

    (Sungkyunkwan University
    Sungkyunkwan University)

  • Jin Hee Kim

    (Kyung Hee University
    Kyung Hee University)

  • Rahmatul Hidayati

    (Kyung Hee University
    Kyung Hee University)

  • Jong-Soo Rhyee

    (Kyung Hee University
    Kyung Hee University)

  • Jung Min Lee

    (Sungkyunkwan University)

  • Won Nam Kang

    (Sungkyunkwan University)

  • Woo Seok Choi

    (Sungkyunkwan University)

  • Hye-Ran Jeon

    (Korea Atomic Energy Research Institute)

  • Jaekwon Suk

    (Korea Atomic Energy Research Institute)

  • Tuson Park

    (Sungkyunkwan University
    Sungkyunkwan University)

Abstract

High-entropy alloy (HEA) superconductors—a new class of functional materials—can be utilized stably under extreme conditions, such as in space environments, owing to their high mechanical hardness and excellent irradiation tolerance. However, the feasibility of practical applications of HEA superconductors has not yet been demonstrated because the critical current density (Jc) for HEA superconductors has not yet been adequately characterized. Here, we report the fabrication of high-quality superconducting (SC) thin films of Ta–Nb–Hf–Zr–Ti HEAs via a pulsed laser deposition. The thin films exhibit a large Jc of >1 MA cm−2 at 4.2 K and are therefore favorable for SC devices as well as large-scale applications. In addition, they show extremely robust superconductivity to irradiation-induced disorder controlled by the dose of Kr-ion irradiation. The superconductivity of the HEA films is more than 1000 times more resistant to displacement damage than that of other promising superconductors with technological applications, such as MgB2, Nb3Sn, Fe-based superconductors, and high-Tc cuprate superconductors. These results demonstrate that HEA superconductors have considerable potential for use under extreme conditions, such as in aerospace applications, nuclear fusion reactors, and high-field SC magnets.

Suggested Citation

  • Soon-Gil Jung & Yoonseok Han & Jin Hee Kim & Rahmatul Hidayati & Jong-Soo Rhyee & Jung Min Lee & Won Nam Kang & Woo Seok Choi & Hye-Ran Jeon & Jaekwon Suk & Tuson Park, 2022. "High critical current density and high-tolerance superconductivity in high-entropy alloy thin films," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30912-5
    DOI: 10.1038/s41467-022-30912-5
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    References listed on IDEAS

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    1. David Larbalestier & Alex Gurevich & D. Matthew Feldmann & Anatoly Polyanskii, 2001. "High-Tc superconducting materials for electric power applications," Nature, Nature, vol. 414(6861), pages 368-377, November.
    2. Shuai Chen & Zachary H. Aitken & Subrahmanyam Pattamatta & Zhaoxuan Wu & Zhi Gen Yu & David J. Srolovitz & Peter K. Liaw & Yong-Wei Zhang, 2021. "Simultaneously enhancing the ultimate strength and ductility of high-entropy alloys via short-range ordering," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
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