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  • Patterning polycrystalline thin films by defocused ion beam : the influence of initial morphology on the evolution of self-organized nanostructures
    Toma, A. ...
    We report on self-organized patterning of polycrystalline noble metal films, supported on dielectric substrates, by defocused Ar+ ion beam irradiation. Theinitial surface morphology affects the ... formation of nanostructures, forcing the growth of ripples with a lateral periodicity imposed by the pristine polycrystalline grain distribution. At the early stages, the self-organization process is dominated by the shadowing of taller grains, while a cross over to the conventional erosive regime, observed for single crystals, sets in at longer sputtering times. The grain boundaries, although providing an additional bias for diffusion of mobile defects, do not affect the propagation of nanoscale ripples across individual grains.
    Source: Journal of applied physics. - ISSN 0021-8979 (Vol. 104, Iss. 10, nov. 2008, str. 104313-104313-7)
    Type of material - article, component part ; adult, serious
    Publish date - 2008
    Language - english
    COBISS.SI-ID - 708010
    DOI

source: Journal of applied physics. - ISSN 0021-8979 (Vol. 104, Iss. 10, nov. 2008, str. 104313-104313-7)
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