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Updated: Jun 25, 2026

Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques
Published on: July 2, 2018
Vortex core switching by coherent excitation with single in-plane magnetic field pulses
Markus Weigand1, Bartel Van Waeyenberge, Arne Vansteenkiste
1Max-Planck-Institut für Metallforschung, 70569 Stuttgart, Germany. mweigand@mf.mpg.de
Abstract:
The response of magnetic vortex cores to subnanosecond in-plane magnetic field pulses was studied by time-resolved x-ray microscopy. Vortex core reversal was observed and the switching events were located in space and time. This revealed a mechanism of coherent excitation by the leading and trailing edges of the pulse, lowering the field amplitude required for switching. The mechanism was confirmed by micromagnetic simulations and can be understood in terms of gyration around the vortex equilibrium positions, displaced by the applied field.
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