SKM 2023 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 42: Poster: Nanostructures at Surfaces
O 42.3: Poster
Dienstag, 28. März 2023, 18:00–20:00, P2/EG
Transition Metal Nanoparticles on Graphene: Influence of Temperature — •Kai Besocke, Mahboobeh Ravankhah, and Mathias Getzlaff — Institut für Angewandte Physik, Heinrich-Heine-Universität Düsseldorf
With its unique properties, such as high quality crystal structure, excellent electrical conductivity and high tensile strength, graphene is a promising substrate for fabricating nanocomposites.
In our research on supported transition metal nanoparticles we are investigating the influence of graphene as a substrate for the deposition of metallic nanoparticles and the influence of subsequent heating. In this contribution we present our results concerning the size distribution of Fe0.5Ni0.5-Nanoparticles on CVD-graphene surfaces.
The graphene surfaces are prepared on a cobalt thin film on a W(110) substrate. The particles under investigation are produced by means of Ar magnetron sputtering in a Haberland source and aggregation takes place in a He atmosphere. We analyze the behaviour of particles several nm in diameter at temperatures up to 500 ∘C.
Particle distributions are analyzed via STM and it will be discussed, whether the nanoparticles show different behaviour upon heating on graphene compared to other surfaces.