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O: Fachverband Oberflächenphysik

O 69: Nanostructures at Surfaces: Dots, Particles, Clusters

O 69.11: Poster

Mittwoch, 9. März 2016, 18:15–20:30, Poster A

Deposition and surface interaction of 3d-metal nanoparticles on W(1 1 0) — •Hendrik Bettermann and Mathias Getzlaff — Institute of Applied Physics, University of Duesseldorf

Supported clusters and nanoparticles are rather interesting objects not only from a fundamental point of view but also for technological applications due to their electronic and magnetic properties which show a strong dependence on their size. Interactions between nanoparticles and substrate during and after deposition are an important influence on particle properties.

Our contribution is focused on nanoparticles of 3d-metal alloys. The sizes range from 3 to 15 nm (1e5 to 1e7 amu). Two nanoparticle sources are attached to our UHV system. An Arc Cluster Ion Source (ACIS) produces nanoparticles of 7 nm height and above. A magnetron sputter source (Haberland-type) gives access to smaller sizes. Particles are mass/charge filtered prior to deposition. Size and structural properties are investigates by scanning tunneling microscopy (STM) under UHV conditions. Deposition on substrates other than tungsten will be given as comparison.