Berlin 2008 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 18: Poster I : Bio Magn. (1-2); Mag.Imgaging (3-9); Magn. Semiconductors (10-16); Half Metals & Oxides (17-20); Coupl.Phenomena (21-27); Magn. Mat. (28-41); Micro & Nanostr. Magn. Materials (42-61); Micro Magn. (62-64); Surface Magnetism (65-70); Transport Phenomena (71-85)
MA 18.40: Poster
Dienstag, 26. Februar 2008, 15:15–18:30, Poster E
In-situ photoemission and electron microscopy from ferrofluids and nanoparticles dissolved in ionic liquids. — •Siham Ouardi1, Gerhard H. Fecher1, Andrei Gloskowskii1, Lubna Basit1, Claudia Felser1, Bert Mallik2, and Anja Mudring2 — 1Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg - University, 55099 Mainz — 2Inorganic Chemistry I, Ruhr - University, 44801 Bochum
This work reports on in-situ electron spectroscopy on fluids. Photo emission spectroscopy from liquids is a challenging task because the experiments have to be carried out in vacuum. It becomes, however, simplified for ionic liquids due to the low vapour pressure. Results are presented for the ferrofluid [bmim]4Dy[SCN]7[H2O] exited by photons of 4.5 keV. Ionic liquids allow to separate ferromagnetic nano particles that otherwise stick together. Results will be presented for magnetic nanoparticles in [bmpyr][OTf] and Pt nanoparticles in the ferrofluid [bmim]FeCl4 investigated by photo emission excited by laboratory sources for X-rays as well as synchrotron radiation. SEM combined with EDX analysis was used to image the nanoparticles dissolved in the liquid.