AVS 46th International Symposium
    Magnetic Interfaces and Nanostructures Technical Group Thursday Sessions
       Session MI+NS-ThM

Paper MI+NS-ThM8
Stripe Domains in Ultraflat Fe/Cu(001) Particles

Thursday, October 28, 1999, 10:40 am, Room 618/619

Session: Patterned or Self-Assembled Magnetic Nanostructures
Presenter: C. Stamm, ETH Zuerich, Switzerland
Authors: C. Stamm, ETH Zuerich, Switzerland
A. Vaterlaus, ETH Zuerich, Switzerland
U. Maier, ETH Zuerich, Switzerland
D. Pescia, ETH Zuerich, Switzerland
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Atomically thin particles of Fe on Cu(001), grown at room temperature, are investigated using a Scanning Electron Microscope with Polarization Analysis (SEMPA): a Mott detector is used to analyze the perpendicular as well as one of the in-plane spin components of the secondary electrons. The magnetic particles with thickness of a few atomic layers are produced by Molecular Beam Epitaxy through a mask placed in front of the Cu substrate. As in laterally extended thin films of Fe/Cu(001), particles whose lateral size exceed 1 µm contain stripe domains with magnetization perpendicular to the film plane. The width of the stripes is independent of the lateral size of the particles and their shape. Sizing down the Fe particle leads to a single-domain configuration. In contrast, in-plane magnetized ultrathin Co/Cu(001) particles are found in a single domain state, irrespective of their lateral size.@footnote 1@ @FootnoteText@ @footnote 1@C. Stamm, F. Marty, A. Vaterlaus, V. Weich, S. Egger, U. Maier, U. Ramsperger, H. Fuhrmann and D. Pescia, Science 282, 449 (1998).