High-Energy Proton-Irradiation Effects on the Magnetism of the Transition-Metal Dichalcogenide MoS2

Gi Wan Jeon, Kyu Won Lee, Cheol Eui Lee

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    We have studied the effects of high-energy proton irradiation on the magnetism of the transition-metal dichalcogenide MoS2. The pristine sample showed ferromagnetic and paramagnetic responses with a diamagnetic background, which all decreased initially with increasing irradiation dose. The ferromagnetic component increased subsequently with further irradiation, for which a spin-3/2 species was identified from the analysis of the M(H) curve, in contrast to the spin-1 species identified in the pristine sample. The magnetism in our MoS2 samples may be accounted for by the structural defects that apparently are cured by low-dose proton irradiation and subsequently become significant by further irradiation.

    Original languageEnglish
    Pages (from-to)93-96
    Number of pages4
    JournalJournal of the Korean Physical Society
    Volume76
    Issue number1
    DOIs
    Publication statusPublished - 2020 Jan 1

    Bibliographical note

    Funding Information:
    This work was supported by the Ministry of Education and the National Research Foundation of Korea (Project No. 2019S1A5A2A03050121). The Korea Basic Science Institute (KBSI) and the Korea Multi-Purpose Accelerator Complex (KOMAC) are, respectively, acknowledged for the measurements and the proton irradiation.

    Publisher Copyright:
    © 2020, The Korean Physical Society.

    Keywords

    • High-energy proton irradiation
    • Magnetism
    • MoS
    • Structural defects

    ASJC Scopus subject areas

    • General Physics and Astronomy

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