Damage evolution on Sm and O sublattices in Au-implanted samarium titanate pyrochlore

Y. Zhang, W. J. Weber, V. Shutthanandan, R. Devanathan, S. Thevuthasan, G. Balakrishnan, D. M. Paul

    Research output: Contribution to journalArticle

    33 Citations (Scopus)

    Abstract

    Single crystals of Sm 2Ti 2O 7 were irradiated with 1.0 MeV Au + at 170, 300, and 700K to study the accumulation of atomic disorder on both the Sm and O sublattices using in situ RBS and NRA along the substrate. The nonlinear damage evolution is consistent with disorder accumulation model, which indicates a role of amorphization process. It was found that at low ion fluences, the disorder on the O sublattice is higher than that for Sm, which suggests differences in threshold displacement energies, defect configurations or defect stability. The increase in exchange between O in the near critical temperature for amorphization suggested a correlation between oxygen vacancy mobility and the critical temperature.

    Original languageEnglish
    Pages (from-to)2866-2872
    Number of pages7
    JournalJournal of Applied Physics
    Volume95
    Issue number5
    DOIs
    Publication statusPublished - 1 Mar 2004

      Fingerprint

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Zhang, Y., Weber, W. J., Shutthanandan, V., Devanathan, R., Thevuthasan, S., Balakrishnan, G., & Paul, D. M. (2004). Damage evolution on Sm and O sublattices in Au-implanted samarium titanate pyrochlore. Journal of Applied Physics, 95(5), 2866-2872. https://doi.org/10.1063/1.1644891