Dresden 2009 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 40: Poster II: Bio- and Molecular Magnetism (1-9); Magnetic Coupling Phenomena/Exchange Bias (10-15); Magnetic Particlicles and Clusters (16-29); Micro and Nanostructured Magnetic Materials (30-51); Multiferroics (52-64); Spin Injection in Heterostructures (65-67); Spin-Dyn./Spin-Torque (68-93); Spindependent Transport (94-108)
MA 40.46: Poster
Freitag, 27. März 2009, 11:00–14:00, P1A
Magnetic correlations in laterally patterned layered magnetic structures — •Elisabeth Josten1, Ulrich Rücker1, Sandra Gilles2, Artur Glavic1, and Thomas Brückel1 — 1IFF-Streumethoden, Forschungszentrum Jülich, 52425 Jülich — 2IBN-Bioelektronik, Forschungszentrum Jülich, 52425 Jülich
Laterally patterned magnetic structures are the basic elements of spintronic devices. With ongoing miniaturization the influence of neighboring cells becomes more and more important. We study the influence of the period of laterally striped magnetic multilayers on the magnetic properties and the magnetic domain formation.
Fe/Cr/Fe have been grown epitaxially on GaAs (100) single crystals by Molecular Beam Epitaxy (MBE). Cr interlayers that induce antiferromagnetic coupling between adjacent Fe layers were chosen to reduce the magnetic dipole moment and to induce a magnetic superstructure easily observable in polarized neutron reflectometry. The lateral structuring is performed by laser interference lithography or UV- nanoimprint lithography and Reactive Ion Etching. Structural characterization is carried out by Scanning Microscopy and X-Ray scattering under grazing incidence. The magnetic order and domain formation as a function of the applied magnetic field are determined by MOKE and polarized neutron reflectometry and off-specular scattering.