Dresden 2011 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 29: Micro- and Nanostructured Magnetic Materials II

MA 29.9: Vortrag

Mittwoch, 16. März 2011, 13:00–13:15, HSZ 103

Preparation and Analysis of Ni Nanowires on Si Gratings — •Wolfgang Kreuzpaintner¹, Boris P. Toperverg³, Dieter Lott², Michael Störmer², Volker Neu⁴, Christine Bran⁴, Birgit Wiedemann¹, Andreas Schreyer², and Peter Böni¹ — ¹Technische Universität München, Physik-Department E21, James-Franck-Straße, 85748 Garching — ²Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH, Max-Planck-Straße 1, 21502 Geesthacht, Germany — ³Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany — ⁴IFW Dresden, Institute for Metallic Materials, Dpt. Magnetic Microstructures, Helmholtzstraße 20, 01069 Dresden, Germany

Ni nanowires with a nominal cross-section of approx. 10 nm × 10 nm, a wire spacing of 750 nm and a length of several cm were deposited homogeneously on a prestructured Si-surface area of approx. 4 cm². The structural and magnetic properties of this sample as obtained from SEM imaging and AFM and MFM micrographs will be shown. Emphasis will be given on the lateral periodicity over a macroscopic distance and the buried sample structures, which were probed by off-specular x-ray scattering and analysed using Distorted-Wave Born Approximation (DWBA). An excellent agreement between the measured and simulated off-specular intensity distribution could be achieved. Furthermore, polarised off-specular neutron scattering on this sample was also carried out to probe the magnetic nature of the sample using the NERO reflectometer at the GENF facility in Geesthacht and will briefly be presented.