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A comparison between dewetting properties of amorphous Ge and GeMn layers on SiO2, followed by a detailed study of magnetic and structural properties of GeMn nanocrystals (NCs), is done by means of several characterization techniques. The formation of three-dimensional Ge and GeMn NCs by solid-state dewetting process was evidenced by transmission electron microscopy. Studying the dewetting morphologies...
A composite nanostructure comprising of Au and Ge gradually evolves on SiO2 surface when a bilayer of Au and Ge is irradiated by medium keV Xe-ion beam. The morphology progresses through different stages from nucleating patches to extended islands and finally a Au-Ge composite nanodot array develops on the insulator surface. While ion energy and fluence are found to determine dimensions of the nanostructures,...
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