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Structural properties of size-selected FeCo nanoparticles deposited on W(110)

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Abstract

Size-selected iron and iron–cobalt alloy clusters have been studied with high resolution transmission electron microscopy (HRTEM) and scanning tunneling microscopy (STM). The clusters were produced by a continuously working arc cluster ion source and subsequently size-selected by an electrostatic quadrupole deflector. The crystalline structure of pure clusters has been investigated with HRTEM to ensure a reliable determination of the lattice parameter for the alloy clusters. The composition of the alloy clusters was checked with energy dispersive X-ray spectroscopy (EDX). The height of the deposited FeCo clusters on the (110) surface of tungsten was determined via STM. These results were compared with the lateral size distribution being investigated by TEM and allow a conclusion on the shape of the deposited alloy clusters. Furthermore, the behavior of the alloy clusters on the W(110) surface at elevated temperatures has been examined, at which the clusters show anisotropic spreading.

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Authors and Affiliations

  1. Institut für Angewandte Physik, Universität Düsseldorf, Universitätsstr. 1, 40225, Düsseldorf, Germany

    Furkan Bulut, Wolfgang Rosellen & Mathias Getzlaff

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  1. Furkan Bulut
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  2. Wolfgang Rosellen
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  3. Mathias Getzlaff
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Correspondence to Furkan Bulut.

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Bulut, F., Rosellen, W. & Getzlaff, M. Structural properties of size-selected FeCo nanoparticles deposited on W(110). Appl. Phys. A 97, 185–189 (2009). https://doi.org/10.1007/s00339-009-5230-2

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  • DOI: https://doi.org/10.1007/s00339-009-5230-2

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