Accumulation of ion beam induced disorder in strontium titanate

S. Thevuthasan, W. Jiang, V. Shutthanandan, W. J. Weber

    Research output: Contribution to journalConference article

    5 Citations (Scopus)

    Abstract

    Damage accumulation has been investigated in single crystal SrTiO3(100) irradiated with 1.0 MeV Au2+ by using in situ Rutherford backscattering spectrometry in channeling geometry (RBS/C). Samples were irradiated at temperatures of 170, 300 and 350 K with ion fluences ranging from 0.05 to 0.60 Au2+/nm2. The in situ RBS/C analysis indicates that the relative disorder in both Sr and Ti sublattices shows a strong sigmoidal dependence on ion dose. After an ion fluence of 0.30 Au2+/nm2 at 170 K, the buried region at the damage peak (∼60 nm) becomes fully amorphous, which corresponds to a dose of ∼0.39 dpa. For irradiation at 300 and 350 K, ion fluences of 0.40 Au2+/nm2 (∼0.52 dpa) and 0.45 Au2+/nm2 (∼0.59 dpa) are necessary to achieve an amorphous state at the damage peak, respectively.

    Original languageEnglish
    Pages (from-to)162-165
    Number of pages4
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume206
    DOIs
    Publication statusPublished - 1 May 2003
    Event13th International conference on Ion beam modification of Mate - Kobe, Japan
    Duration: 1 Sep 20026 Sep 2002

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    Keywords

    • Amorphization
    • Atomic defects
    • Ceramics
    • Ion irradiation
    • Radiation effects

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Instrumentation

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