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Superconductivity at 39 K in magnesium diboride

Author

Listed:
  • Jun Nagamatsu

    (Aoyama-Gakuin University, Chitosedai, Setagaya-ku)

  • Norimasa Nakagawa

    (Aoyama-Gakuin University, Chitosedai, Setagaya-ku)

  • Takahiro Muranaka

    (Aoyama-Gakuin University, Chitosedai, Setagaya-ku)

  • Yuji Zenitani

    (Aoyama-Gakuin University, Chitosedai, Setagaya-ku)

  • Jun Akimitsu

    (Aoyama-Gakuin University, Chitosedai, Setagaya-ku
    CREST, Japan Science and Technology Corporation, Kawaguchi)

Abstract

In the light of the tremendous progress that has been made in raising the transition temperature of the copper oxide superconductors (for a review, see ref. 1), it is natural to wonder how high the transition temperature, Tc, can be pushed in other classes of materials. At present, the highest reported values of Tc for non-copper-oxide bulk superconductivity are 33 K in electron-doped CsxRbyC60 (ref. 2), and 30 K in Ba1-xKxBiO3 (ref. 3). (Hole-doped C60 was recently found4 to be superconducting with a Tc as high as 52 K, although the nature of the experiment meant that the supercurrents were confined to the surface of the C60 crystal, rather than probing the bulk.) Here we report the discovery of bulk superconductivity in magnesium diboride, MgB2. Magnetization and resistivity measurements establish a transition temperature of 39 K, which we believe to be the highest yet determined for a non-copper-oxide bulk superconductor.

Suggested Citation

  • Jun Nagamatsu & Norimasa Nakagawa & Takahiro Muranaka & Yuji Zenitani & Jun Akimitsu, 2001. "Superconductivity at 39 K in magnesium diboride," Nature, Nature, vol. 410(6824), pages 63-64, March.
    • Handle: RePEc:nat:nature:v:410:y:2001:i:6824:d:10.1038_35065039
    DOI: 10.1038/35065039
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    Cited by:

    1. Jingkai Bi & Yuki Nakamoto & Peiyu Zhang & Katsuya Shimizu & Bo Zou & Hanyu Liu & Mi Zhou & Guangtao Liu & Hongbo Wang & Yanming Ma, 2022. "Giant enhancement of superconducting critical temperature in substitutional alloy (La,Ce)H9," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    2. Thomas, Heiko & Marian, Adela & Chervyakov, Alexander & Stückrad, Stefan & Salmieri, Delia & Rubbia, Carlo, 2016. "Superconducting transmission lines – Sustainable electric energy transfer with higher public acceptance?," Renewable and Sustainable Energy Reviews, Elsevier, vol. 55(C), pages 59-72.
    3. Bárbara Maria Oliveira Santos & Fernando Jorge Monteiro Dias & Frederic Trillaud & Guilherme Gonçalves Sotelo & Rubens de Andrade Junior, 2023. "A Review of Technology Readiness Levels for Superconducting Electric Machinery," Energies, MDPI, vol. 16(16), pages 1-18, August.

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