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    Nanoclustering of vacancies in thin metal films revealed by x-ray diffuse scattering

    Kim, Chinkyo
    Feng, Rui
    Conrad, Edward H.
    Miceli, Paul F.
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    [PDF] NanoclusteringVacanciesThinMetalFilms.pdf (199.6Kb)
    Date
    2007
    Format
    Article
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    Abstract
    The authors report the incorporation of unexpectedly large vacancy clusters into homoepitaxial Ag(001) films. These results, which are for a simple noble metal system, have important implications for understanding the atomic-scale kinetics of surfaces where current models have mostly ignored the role of vacancies. For films grown at 150 K, an average vacancy cluster exhibits a local dilatation volume of 750 Å3, which leads to a 1% compressive strain of the film. Vacancy clusters are observed even for films grown near room temperature. These in situ diffuse x-ray scattering experiments measure the local deformation around the cluster and, therefore, provide conclusive evidence of vacancy clusters.
    URI
    http://hdl.handle.net/10355/7429
    Citation
    Appl. Phys. Lett. 91, 093131 (2007
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