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Three-dimensional nanoscale control of magnetism in crystalline Yttrium Iron Garnet

Author

Listed:
  • Valerio Levati

    (Politecnico di Milano)

  • Matteo Vitali

    (Politecnico di Milano)

  • Andrea Giacco

    (Politecnico di Milano)

  • Nicola Pellizzi

    (Politecnico di Milano)

  • Raffaele Silvani

    (Università di Perugia)

  • Luca Ciaccarini Mavilla

    (Università di Perugia)

  • Marco Madami

    (Università di Perugia)

  • Irene Biancardi

    (Politecnico di Milano)

  • Davide Girardi

    (Politecnico di Milano)

  • Matteo Panzeri

    (Politecnico di Milano)

  • Piero Florio

    (Politecnico di Milano)

  • Maria Cocconcelli

    (Politecnico di Milano)

  • David Breitbach

    (Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau)

  • Philipp Pirro

    (Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau)

  • Ludovica Rovatti

    (Politecnico di Milano)

  • Nora Lecis

    (Politecnico di Milano)

  • Federico Maspero

    (Politecnico di Milano)

  • Riccardo Bertacco

    (Politecnico di Milano)

  • Giacomo Corrielli

    (Istituto di Fotonica e Nanotecnologie - Consiglio Nazionale delle Ricerche (IFN-CNR))

  • Roberto Osellame

    (Istituto di Fotonica e Nanotecnologie - Consiglio Nazionale delle Ricerche (IFN-CNR))

  • Valeria Russo

    (Politecnico di Milano)

  • Andrea Li Bassi

    (Politecnico di Milano)

  • Silvia Tacchi

    (Istituto Officina dei Materiali - Consiglio Nazionale delle Ricerche (CNR-IOM), Sede Secondaria di Perugia c/o Dipartimento di Fisica e Geologia, Università di Perugia)

  • Daniela Petti

    (Politecnico di Milano)

  • Edoardo Albisetti

    (Politecnico di Milano)

Abstract

The exceptional magnetic, optical and phononic properties of Yttrium Iron Garnet (YIG) make it unique for spin-wave based and photonic applications. Yet, nanostructuring crystalline YIG and manipulating its magnetism in a non-destructive way is an outstanding challenge, and so far mostly limited to two-dimensional capabilities. Here, we show that irradiation of single-crystal YIG films with a focused UV laser drives a stable, giant enhancement of the perpendicular magnetic anisotropy, preserving the crystalline quality. This modulation is highly confined at the nanoscale in both the lateral and vertical directions, and its extension within the volume can be finely tuned with a continuous depth-control. By harnessing these three-dimensional anisotropy profiles, we demonstrate a large tuning of the spin-wave band structure, volume spatial localization, and non-reciprocity, realizing proof-of-principle 3D magnonic crystals. This straightforward, single-step, laser nanofabrication of three-dimensional magnetic systems based on crystalline YIG thin films opens the way to design novel functions in magnonic and magneto-optic devices.

Suggested Citation

  • Valerio Levati & Matteo Vitali & Andrea Giacco & Nicola Pellizzi & Raffaele Silvani & Luca Ciaccarini Mavilla & Marco Madami & Irene Biancardi & Davide Girardi & Matteo Panzeri & Piero Florio & Maria , 2025. "Three-dimensional nanoscale control of magnetism in crystalline Yttrium Iron Garnet," Nature Communications, Nature, vol. 16(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-64630-5
    DOI: 10.1038/s41467-025-64630-5
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