Regensburg 2013 – scientific programme

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DS: Fachverband Dünne Schichten

DS 27: Thin Film Characterization: Structure Analysis and Composition (XRD, TEM, XPS, SIMS, RBS,...) I

DS 27.10: Talk

Wednesday, March 13, 2013, 19:30–19:45, H32

Formation of supersaturated AuNi nanoparticles via solid state dewetting of Au/Ni thin bilayers — •Andreas Herz, Dong Wang, and Peter Schaaf — Institut für Werkstofftechnik, Fachgebiet Werkstoffe der Elektrotechnik, Ilmenau, Germany

Thin films undergo agglomeration upon annealing due to their high surface-to-volume ratio which produces a large driving force for reduction of surface area. This process is known as dewetting and can occur well below the melting temperature of the layer material. In recent years, dewetting of thin metal films has therefore become a promising method for fabricating various nanostructures with potential applications in catalysis, plasmonics, or magnetic devices. However, nanoalloys may reveal new or even unique properties due to the combination of size and composition. Thus, thin bilayer systems consisting of a pair of metals, e.g. Au and Ni, could be a convenient basis for the self-organized synthesis of novel alloy nanostructures via dewetting.