Berlin 2005 – scientific programme

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MA: Magnetismus

MA 20: Poster:Schichten(1-29),Spintrsp(30-45),Ex-Bias(46-63),Spindyn(64-75),Mikromat.(76-80),Cluster(81-94),Abbv.(95-99),Obflm(100-02),SpElek.(103-09),E-Theo(110-14),Mikromag.(115-16),Spin+PÜ(117-26),Mag.Mat.(127-51),Meth.(152-55),Mol.Mag(156-59),Kondo(160-65

MA 20.81: Poster

Monday, March 7, 2005, 14:00–18:00, Poster TU C

Investigation of (Fe_(1−x)Co_x)_(1−y)Pt_y nanoparticles by different electron microscopic methods — •Daniela Sudfeld¹, Inga Ennen¹, Andreas Hütten¹, Günter Reiss¹, Daniel Meißner², Klaus Wojczykowski², and Peter Jutzi² — ¹Thin Films and Nanostructures, Department of Physics, University of Bielefeld, Universitätsstr. 25, D-33615 Bielefeld, Germany — ²Inorganic Chemistry III, Department of Chemistry, University of Bielefeld, Universitätsstr. 25, D-33615 Bielefeld, Germany

Today iron oxide particles are used for divers biological or medical applications as magnetic carriers, for example. For the next generation of magnetic markers ligand stabilized (Fe_(1−x)Co_x)_(1−y)Pt_y nanoparticles are interesting to substitute the usually used beads. Especially analytical and high-resolution transmission electron microscopy is a primary tool to investigate the ternary alloyed nanocrystals. Additionally the particles have been investigated by other methods like transmission in scanning electron microscopy, x-ray analyses and magnetization measurements. The combination of all techniques give closer insights in the formation and composition of the (Fe_(1−x)Co_x)_(1−y)Pt_y cluster, the particle size distributions, self-assembling and magnetization behavior.