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Dresden 2020 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 123: Nanostructured Surfaces and Thin Films III: Dots, Particles, Clusters (joint session O/CPP)

O 123.7: Vortrag

Freitag, 20. März 2020, 12:00–12:15, WIL B321

Deposition and annealing of FexNi1−x nanoparticles on a W(110) surface — •Mahboobeh Ravankhah, Dennis Jagenburg, and Mathias Getzlaff — Institute of Applied Physics, University Düsseldorf

3d bimetallic nanoparticles have received lots of attention because of their technological application. In comparison to pure Fe and Ni, alloys of FexNi1−x have much more complex structural phases under different conditions. Different FeNi alloys are used: Fe0.50Ni0.50, Fe0.25Ni0.75 and Fe0.75Ni0.25. All nanoparticles are prepared by a magnetron sputtering source under UHV condition on a W(110) surface, therefore contaminations are avoided. The deposited nanoparticles are subsequently annealed between 500-800K. Particle’s size, shape and structure will be investigated by Transmission Electron Microscopy (TEM) and Scanning Tunneling Microscopy (STM). We report on the influence of different parameters like size of nanoparticles, stoichiometry and annealing temperature on the melting behavior.

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