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3D Magnonic Conduits by Direct Write Nanofabrication.

Sebastian Lamb-Camarena1,2, Fabrizio Porrati3, Alexander Kuprava3

  • 1Faculty of Physics, Nanomagnetism and Magnonics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria.

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Summary

Researchers developed 3D magnonic nanoconduits using focused-electron-beam induced deposition (FEBID). Brillouin light scattering spectroscopy revealed distinct spin-wave resonances in these 3D structures compared to 2D, paving the way for advanced magnonic circuits.

Keywords:
3D nanostructuresBrillouin light spectroscopyferromagnetic resonancefocused electron beam induced depositionnanomagnetismspin waves

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Area of Science:

  • Nanomagnetism
  • Spintronics
  • Additive Manufacturing

Background:

  • Magnonics offers potential for advanced information processing.
  • Current magnonic circuits are limited to 2D structures.
  • Extending magnonics into the third dimension is crucial for miniaturization.

Purpose of the Study:

  • To introduce and characterize three-dimensional (3D) magnonic nanoconduits.
  • To explore the fabrication of 3D magnetic nanoarchitectures.
  • To investigate spin-wave dynamics in 3D magnonic structures.

Main Methods:

  • Fabrication of 3D magnonic nanoconduits using focused-electron-beam induced deposition (FEBID).
  • Characterization using Brillouin light scattering (BLS) spectroscopy.
  • Spatially resolved analysis of spin-wave resonances.

Main Results:

  • Successful fabrication of 3D magnonic nanoconduits via FEBID.
  • Demonstration of significant differences in spin-wave resonances between 2D and 3D nanostructures.
  • Attribution of resonance differences to geometrically induced non-uniformity in the internal magnetic field.

Conclusions:

  • FEBID is a viable additive manufacturing technique for creating magnetic 3D nanoarchitectures.
  • This study presents the first BLS characterization of FEBID-fabricated magnonic conduits.
  • The findings enable the development of next-generation 3D magnonic devices.