Room-temperature ferromagnetism in hydrothermally treated fullerene

Do Wan Kim, Kyu Won Lee, Won Koo Park, Cheol Eui Lee

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have studied the effects of hydrothermal treatment on fullerene (C60) by means of the magnetization and ferromagnetic resonance (FMR) measurements. Room-temperature ferromagnetism was observed in hydrothermally treated fullerene by the magnetization measurements, and a prominent FMR signal was also detected. The magnetization curves were analyzed by employing ferromagnetic and paramagnetic contributions. Thus, a spin-1/2 species was identified in the paramagnetic pristine fullerene, which may be attributed to hydrogen or C-OH bonds. In contrast, a spin-3/2 species was identified in the ferromagnetic hydrothermally treated fullerene, which may be explained by a hydrogen atom adsorbed to a carbon vacancy.

    Original languageEnglish
    Article number114540
    JournalPhysica E: Low-Dimensional Systems and Nanostructures
    Volume127
    DOIs
    Publication statusPublished - 2021 Mar

    Bibliographical note

    Publisher Copyright:
    © 2020 Elsevier B.V.

    Keywords

    • Ferromagnetic resonance signal
    • Fullerene
    • Hydrothermal treatment
    • Room-temperature ferromagnetism

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics
    • Condensed Matter Physics

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