Beam‐Induced Fe Nanopillars as Tunable Domain‐Wall Pinning Sites |
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| Authors: | Jeroen H. Franken Mark A. J. van der Heijden Tim H. Ellis Reinoud Lavrijsen Carsten Daniels Damien McGrouther Henk J. M. Swagten Bert Koopmans |
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| Affiliation: | 1. Department of Applied Physics, Center for NanoMaterials, Eindhoven University of Technology, MB, Eindhoven, Netherlands;2. SUPA, School of Physics and Astronomy, University of Glasgow, UK |
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| Abstract: | Focused‐electron‐beam‐induced deposition (FEBID) is employed to create freestanding magnetic nanostructures. By growing Fe nanopillars on top of a perpendicular magnetic domain wall (DW) conduit, pinning of the DWs is observed due to the stray fields emanating from the nanopillar. Furthermore, a different DW pinning behavior is observed between the up and down magnetic states of the pillar, allowing to deduce the switching fields of the pillar in a novel way. The implications of these results are two‐fold: not only can 3‐dimensional nano‐objects be used to control DW motion in applications, it is also proposed that DW motion is a unique tool to probe the magnetic properties of nano‐objects. |
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| Keywords: | beam induced deposition magnetic nanostructures magnetic domain walls transmission electron microscopy nanosensors |
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