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

M. Okuda, T. Schwarze, J. C. Eloi, S. E. Ward Jones, P. J. Heard, A. Sarua, E. Ahmad, V. V. Kruglyak, D. Grundler, W. Schwarzacher

    Research output: Contribution to journalArticlepeer-review

    Abstract

    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.

    Original languageEnglish
    Article number155301
    JournalNanotechnology
    Volume28
    Issue number15
    DOIs
    Publication statusPublished - 15 Mar 2017

    Keywords

    • chemical fixation
    • ferritin
    • ferromagnetic resonance
    • magnetic nanoparticle
    • magnonic metamaterial
    • magnonics
    • self-assembly

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