Dresden 2020 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 56: Poster Session - Nanostructures at Surfaces: Dots, Particles, Clusters
O 56.2: Poster
Dienstag, 17. März 2020, 18:15–20:00, P2/2OG
Annealing behavior of FeNi alloy nanoparticles deposited on a W(110) surface: influence of the Stoichiometry — •Dennis Jagenburg, Mahboobeh Ravankhah, and Mathias Getzlaff — Institute of Applied Physics University Düsseldorf
Properties of metallic nanoparticles significantly differ from that of the corresponding bulk material. This has led to an increasing importance of investigating nanometer-sized metallic particles. From a technological point of view it is necessary to study the nanoparticles at higher temperatures due to heating and altering of structural components in devices during fabrication; thus, the functional performance may change. Therefore, the goal of this study is to analyze the influence of the stoichiometry and annealing temperature on the shape and structure of alloy nanoparticles.
Different sized-selected iron-nickel alloy nanoparticles are produced by a Magnetron-Based Nanocluster Source under UHV conditions and are deposited on a W(110) surface. Scanning Tunneling Microscopy (STM) is used to determine the behavior of Fe0.25Ni0.75 and Fe0.75Ni0.25 nanoparticles after deposition and subsequent tempering.