Electron spin resonance study of proton-irradiation-induced defects in graphite

Kyu Won Lee, H. Kweon, J. J. Kweon, Cheol Eui Lee

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    15 Citations (Scopus)

    Abstract

    Electron spin resonance measurements of proton-irradiated graphite have revealed detailed nature of proton-irradiation-induced defects. Our results indicate that proton-irradiation creates confined defect regions of a metallic island surrounded by an insulating magnetic region which "isolates" the metallic island inside from the metallic graphite background outside. We have thus come up with a picture of phase separation in proton-irradiated graphite comprising three regions of distinct electrical and magnetic properties.

    Original languageEnglish
    Article number044302
    JournalJournal of Applied Physics
    Volume107
    Issue number4
    DOIs
    Publication statusPublished - 2010

    Bibliographical note

    Funding Information:
    This work was supported by the Korea Ministry of Education, Science and Technology (NRL Program R0A-2008-000-20066-0 and User Program of Proton Engineering Frontier Project, Project No. 20090082672) and by the Seoul Research and Business Development Program (Grant No. 10583). We thank Dr. H.-J. Woo at the Korea Institute of Geoscience and Mineral Resources (KIGAM) for the proton beam irradiation. The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

    ASJC Scopus subject areas

    • General Physics and Astronomy

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