Berlin 2008 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 32: Postersession II: Spinstruct./Phase Trans. (1-10); Spinelectronics (11-15); Thin Films (16 - 36); Particles/Clusters (37-45); Multiferroics (46-54); Spindynamics/Spin Torque (55 - 76); Post Deadlines (77-79)
MA 32.43: Poster
Freitag, 29. Februar 2008, 11:15–14:00, Poster E
On the magnetic properties of composites containing CoFe2O4 nano-particles — Béatrice Hallouet, •Carsten Volz, and Rolf Pelster — Universität des Saarlandes, Fachrichtung 7.2 Experimentalphysik, Campus E 2.6 , D-66123 Saarbrücken, Germany
We investigate ferrofluids consisting of nanoscaled single-domain magnetic particles (CoFe2O4, diameter 5-10nm) in an ethandiole matrix. These are characterized by means of temperature-dependent broadband magnetic spectroscopy up to 6 GHz. We focus on the behavior of the magnetic resonances, especially on the question how these depend on the microstructure, i. e. on the spatial distribution and the orientation of the particles. Non-random systems are obtained by applying a static magnetic field during sample preparation.