Top-down design of magnonic crystals from bottom-up magnetic nanoparticles through protein arrays

Research output: Contribution to journalArticle

  • Authors:
  • M. Okuda
  • T. Schwarze
  • J. C. Eloi
  • S. E. Ward Jones
  • P. J. Heard
  • And 5 others
  • External authors:
  • A. Sarua
  • E. Ahmad
  • V. V. Kruglyak
  • D. Grundler
  • W. Schwarzacher


We show that chemical fixation enables top-down micro-machining of large periodic 3D arrays of protein-encapsulated magnetic nanoparticles (NPs) without loss of order. We machined 3D micro-cubes containing a superlattice of NPs by means of focused ion beam etching, integrated an individual micro-cube to a thin-film coplanar waveguide and measured the resonant microwave response. Our work represents a major step towards well-defined magnonic metamaterials created from the self-assembly of magnetic nanoparticles.

Bibliographical metadata

Original languageEnglish
Article number155301
Issue number15
StatePublished - 15 Mar 2017