Dresden 2003 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
MA: Magnetismus
MA 14: Poster: Schichten(1-31), Spinabh.Trsp.(32-47), Exch.Bias(48-54), Spindyn.(55-64), Mikromag.(65-76), Partikel(77-88), Oflmag.(89-92), Spinelektr.(93-98), Elektr.Theo.(99-103), Mikromag+PhasÜ+Aniso.(104-122), MagnMat.(123-134), Messm+Mol-Mag.(135-139), Kondo(140-151)
MA 14.131: Poster
Dienstag, 25. März 2003, 15:15–19:15, Zelt
Magnetic Carbon: Observation of Intrinsic Magnetic Domains in C60 polymer — •K.-H. Han1, D. Spemann2, R. Höhne1, A. Setzer1, T. Makarova3, P. Esquinazi1, and T. Butz2 — 1Department of Superconductivity and Magnetism, University of Leipzig, D-04103 Leipzig, Germany — 2Department of Nuclear Solid State Physics, University of Leipzig, D-04103 Leipzig, Germany — 3Ioffe Physico-Technical Institute, 194021 St Petersburg, Russia
A C60 polymer has been characterized for the first time with respect to impurity content and ferromagnetic properties by laterally resolved particle induced X-ray emission (PIXE), superconducting quantum interference device (SQUID) and magnetic force microscopy (MFM) in order to detect intrinsic ferromagnetic domains. In parts of the pure regions (concentration of magnetic impurities < 1 µg/g), we found stripe-domain magnetic images with different orientations of domain magnetization. The size of the regions where magnetic domains were observed is ∼ 30 % of the pure region. All these results reveal that the polymerized C60 sample is a mixture of magnetic and non-magnetic parts and only a fraction of the sample contributes to the ferromagnetism.