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Regensburg 2010 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 9: Magnetic Particles, Clusters

MA 9.6: Vortrag

Montag, 22. März 2010, 16:30–16:45, H23

Templated self-assembly of Iron oxide nanoparticles in lithographically prepatterned tracks — •Oleg Petracic1, Maria Jose Benitez1,2, Durga Mishra1, Philipp Szary1, Frank Brüssing1, Giovanni Badini Confalonieri1, Matthias Feyen2, Anhui Lu2, Leonardo Agudo3, Günther Eggeler3, and Hartmut Zabel11Experimentalphysik IV, Ruhr-Universität Bochum, D-44780 Bochum — 2Max-Planck Institut für Kohlenforschung, D-45470 Mülheim an der Ruhr — 3Institute for Materials, Department of Materials Science, Ruhr-Universität Bochum, 44780 Bochum

Magnetic nanostructures hold the potential for numerous applications, e.g., in magnetic data storage, logic devices, sensors or bio-medical applications. In particular, magnetic nanoparticles are in the focus of huge interest, because they could serve as building blocks for future high-density data storage media and spintronics. We report on self-assembled Iron oxide nanoparticle films on silicon substrates. Furthermore, using electron beam lithography we fabricate patterned trenches of 40-1000nm width for assisted self-assembly. The nanoparticles with a diameter of 20 nm +/- 1.6 nm were synthesized by thermal decomposition of iron oleate complexes in trioctylamine in presence of oleic acid. Samples with different track widths and nanoparticle concentration have been characterized by magnetometry, X-ray diffraction and high resolution transmission electron microscopy.

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