Berlin 2012 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 17: Poster Session

MM 17.38: Poster

Montag, 26. März 2012, 17:00–19:00, Poster B

An apparatus for the synthesis of cluster-based materials — •Arne Fischer, Herbert Gleiter, and Horst Hahn — Karlsruher Institut für Technologie, Institut für Nanotechnologie, 76344 Eggenstein-Leopoldshafen, Germany

A new cluster deposition system for the synthesis of materials composed of mass-selected clusters embedded in matrices of other materials as well as cluster-decorated surfaces was constructed. This approach can open pathways to a new class of materials with tailored electronic, magnetic or catalytic properties.

The clusters are prepared in a source that combines magnetron sputtering and gas-phase aggregation. This allows the production of clusters of various materials with sizes ranging from a few atoms up to several nm. The ionized clusters are first shaped into an ion beam, then mass selected in a 1.4 T sector magnet and finally deposited on a substrate with deposition energies ranging from 0.1 to 100 eV/atom. This covers the whole range from soft-landing up to energetic impact conditions at which the clusters are immobilized and embedded in the substrate. The matrix material can be optionally co-deposited using a high temperature effusion cell or an electron beam evaporator. Altogether the new system is a versatile instrument to synthesize nearly every type of cluster-based materials.