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MA: Fachverband Magnetismus
MA 7: Micro and Nanostructured Magnetic Materials II
MA 7.11: Talk
Monday, February 25, 2008, 17:45–18:00, EB 301
Spin structure of nanocrystalline Gadolinium studied by magnetic small-angle neutron scattering — •Frank Döbrich1, Mihdi Elmas1, Adrian Ferdinand1, Jürgen Markmann1, Melissa Sharp2, Helmut Eckerlebe2, Rainer Birringer1, and Andreas Michels1 — 1Technische Physik, Universität des Saarlandes, Saarbrücken, Germany — 2GKSS Forschungszentrum, Geesthacht, Germany
We report on magnetic-field-dependent small-angle neutron scattering (SANS) experiments on nanocrystalline inert-gas condensed bulk Gd, which was synthesized using the low-capturing isotope 160Gd. The angular dependency of the scattering cross section is in very good agreement with recent theoretical predictions. Rather unexpected for this type of material, we observe a “clover-leaf” anisotropy in the SANS signal, the origin of which is attributed to the existence of longitudinal magnetization fluctuations associated with a disordered grain-boundary component.