Regensburg 2007 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 27: Micro- and Nanostructured Magnetic Materials II
MA 27.2: Vortrag
Donnerstag, 29. März 2007, 15:30–15:45, H22
Artifical domain structures in hybrid magnetic property patterned ferromagnetic thin films — •Jeffrey McCord1, Christina Hamann1, Rainer Kaltofen1, Ingolf Mönch1, Rudolf Schäfer1, Ludwig Schultz1, Jürgen Fassbender2, Andreas Gerber3 und Eckhard Quandt3 — 1IFW Dresden, Institut für Metallische Werkstoffe, D-01171 Dresden — 2Forschungszentrum Dresden-Rossendorf, Institut für Ionenstrahlphysik und Materialforschung, D-01314 Dresden — 3Forschungszentrum Caesar, D-53175 Bonn
The magnetic response of ferromagnetic thin films is normally determined by the material properties like magnetic moment, uniaxial anisotropy, and coercivity. Here, we locally modify and tune the magnetic anisotropies and magnetic moment by laterally resolved modification of these parameters in ferromagnetic thin films systems. Periodic magnetic structures, consisting of regions of alternating anisotropy axis and strength, or varying magnetic moment are generated using photo-lithographic processing. Fundamentally new types of `hybrid' materials are generated with intriguing magnetic domain configurations and magnetization reversal features, as for example a lateral exchange spring effect. The observed domain states have no counterpart in conventional thin films.