Regensburg 2010 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 41: Poster Session I (Semiconductor Substrates: Epitaxy and growth; Semiconductor Substrates: Adsorbtion; Semiconductor Substrates: Solid-liquid interfaces; Semiconductor Substrates: Clean surfaces; Oxides and insulators: Epitaxy and growth; Oxides and insulators: Adsorption; Oxides and insulators: Clean surfaces; Organic, polymeric and biomolecular films - also with adsorbates; Organic electronics and photovoltaics, Surface chemical reactions; Heterogeneous catalysis; Phase transitions; Particles and clusters; Surface dynamics; Surface or interface magnetism; Electron and spin dynamics; Spin-Orbit Interaction at Surfaces; Electronic structure; Nanotribology; Solid/liquid interfaces; Graphene; Others)
O 41.58: Poster
Dienstag, 23. März 2010, 18:30–21:00, Poster B1
Influence of temperature on the shape of deposited nanoparticles — •Wolfgang Rosellen1, Georg Oeltzschner1, Christian Kleinhans1, Volker Hückelkamp1, Furkan Bulut1,2, Joachim Bansmann2, Armin Kleibert3, and Mathias Getzlaff1 — 1Institute of Applied Physics, University Düsseldorf — 2Dep. of Surface Chemistry, Ulm University — 3Paul Scherrer Institute, Switzerland
In this contribution we focus on the temperature behaviour of mass filtered Fe, Co and FeCo nanoparticles with diameters between 3 nm and 15 nm deposited on W(110). In RHEED experiments the orientation of mass filtered deposited Fe nanoparticles could be determined [1]. It was shown that small deposited Fe particles with diameter being less than 4 nm exhibit a spontaneously alignment, whereas larger particles with diameter of about 13 nm are randomly oriented on the W(110) surface. The temperature depending melting and orientation of deposited 3d-metal nanoparticles produced by a continuously working arc cluster ion source (ACIS) will be discussed. The shape of the deposited nanoparticles is investigated in-situ by scanning tunneling microscopy (STM).
[1] A. Kleibert, A. Voitkans, and K. H. Meiwes-Broer, (submitted).