Preparation and superconductivity of potassium-doped fullerene nanowhiskers

Hiroyuki Takeya, Ryoei Kato, Takatsugu Wakahara, Kun'Ichi Miyazawa, Takahide Yamaguchi, Toshinori Ozaki, Hiroyuki Okazaki, Yoshihiko Takano

    Research output: Contribution to journalArticlepeer-review

    23 Citations (Scopus)


    Superconductivity at 17 K was observed in a potassium (K)-doped fullerene nanowhisker (K-C60NW). The superconducting volume fraction of a full shielding volume was as high as 80% in the nominal composition of K3.3C60NW, while that of K-doped fullerene powder was less than 1% under the same heating condition at 200 °C. We report the superconducting behaviors of our newly synthesized K3.3C60NWs, such as the applied field dependence of magnetization and the critical current density of 3 × 105 A/cm2 at 5 K under 50 kOe, in comparison to those of K-doped fullerene powders.

    Original languageEnglish
    Pages (from-to)343-345
    Number of pages3
    JournalMaterials Research Bulletin
    Issue number2
    Publication statusPublished - 2013 Feb


    • A. Fullerenes
    • A. Superconductors
    • D. Defects

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering


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