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Advanced Materials

Control of Double-Vortex Domain Configurations in a Shape-Engineered Trilayer Nanomagnet System

Authors

  • Lei Huang,

    1. Condensed Matter Physics and Material Science Department Brookhaven National Laboratory Upton, NY 11973 (USA)
    2. Department of Physics and Astronomy Stony Brook University Stony Brook, NY 11794-3800 (USA)
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  • Marvin A. Schofield,

    1. Condensed Matter Physics and Material Science Department Brookhaven National Laboratory Upton, NY 11973 (USA)
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  • Yimei Zhu

    Corresponding author
    1. Condensed Matter Physics and Material Science Department Brookhaven National Laboratory Upton, NY 11973 (USA)
    2. Department of Physics and Astronomy Stony Brook University Stony Brook, NY 11794-3800 (USA)
    • Condensed Matter Physics and Material Science Department Brookhaven National Laboratory Upton, NY 11973 (USA).
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Abstract

A shape-engineered trilayer ferromagnetic/non-magnetic/ferromagnetic nanostructure is lithographically fabricated to support four stable flux-closure domain configurations at remanence. Quantitative phase measurements using electron holography reveal the detailed magnetization reversal process and demonstrate how four domain states with distinct vortex chirality combinations can be controllably achieved by systematic manipulation of the applied magnetic field (see image).

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