Study of the proton-beam irradiation effects on TlH2PO 4

Se Hun Kim, Kyu Won Lee, Jae Won Jang, Cheol Eui Lee, K. S. Lee, S. J. Noh

    Research output: Contribution to journalConference articlepeer-review

    7 Citations (Scopus)

    Abstract

    The H+-ion treatment effect on TlH2PO4, a KH2PO4 (KDP)-type ferroelectrics, was studied by nuclear magnetic resonance (NMR) and AC dielectric constant measurements. A sample of TlH2PO4 was irradiated by 1-MeV H+ ion beams to a dose of 1015 ions/cm2. The change in the NMR relaxation behaviors after the irradiation was attributed that in the hydrogen-bond geometry, presumably affecting the order-disorder proton dynamics. A prominent decrease in the dielectric constant was also observed after the irradiation. The macroscopic and microscopic changes due to the irradiation are discussed in the light of the proton dynamics.

    Original languageEnglish
    Pages (from-to)182-184
    Number of pages3
    JournalCurrent Applied Physics
    Volume6
    Issue number2
    DOIs
    Publication statusPublished - 2006 Feb
    EventEngineering Aspects of Nanomaterials and Technologies -
    Duration: 2005 Jan 242005 Jan 27

    Bibliographical note

    Funding Information:
    This work was supported by the KISTEP (National Research Laboratory and Proton Accelerator User Program No. M202AK010021-04A1101-02110) and by the Korea Research Foundation (Grant No. KRF-2004-005-C00060 and Brain Korea 21 Project in 2004). Measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

    Keywords

    • Dielectric constant
    • Ferroelectrics
    • NMR
    • Proton beam irradiation
    • TlHPO

    ASJC Scopus subject areas

    • General Materials Science
    • General Physics and Astronomy

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