Berlin 2012 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 8: Magnetic Particles / Clusters I
MA 8.4: Vortrag
Montag, 26. März 2012, 18:30–18:45, EB 202
Self assembled Iron Oxide Nanoparticles - From a 2D powder to a single crystal — •Elisabeth Josten1, Ulrich Rücker1, Manuel Angst1, Paul Zakalek1, Doris Meertens2, Erik Wetterskog3, Oliver Seeck4, Florian Menau5, Lennard Bergström3, and Thomas Brückel1 — 1JCNS-2 and PGI-4, Forschungszentrum Jülich, Germany — 2ER-C and PGI-5, Forschungszentrum Jülich, Germany — 3Stockholm Universitet, Department of Materials and Environmental Chemistry, Stockholm, Sweden — 4DESY, Hamburg, Germany — 5Synchrotron Soleil, Gif-sur-Yvette, France
Fundamental research on magnetic nanostructures is an important part of todays science in the field of information technology. Highly ordered 3 dimensional structures of nanoparticles are model systems to study the magnetic inter-particle interactions.
In this context, monodisperse Fe2O3 nanoparticles have been deposited on a substrate to form highly ordered superstructures (mesocrystals) using a drop casting method. In a first step, structural characterization was carried out by SEM, AFM, TEM and GISAXS. Due to the arbitrary orientation of the mesocrystals on the substrate the grazing incidence scattering experiments cannot yield the full supercrystal structure information, only a powder average. In this study a single mesocrystal was detached from the sample using focused ion beam preparation techniques, and was investigated with small angle diffraction for its structure.