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Voltage-driven motion of nitrogen ions: a new paradigm for magneto-ionics

Author

Listed:
  • Julius Rojas

    (Universitat Autònoma de Barcelona)

  • Alberto Quintana

    (Georgetown University)

  • Aitor Lopeandía

    (Universitat Autònoma de Barcelona)

  • Joaquín Salguero

    (IMN-Instituto de Micro y Nanotecnología (CNM-CSIC), Isaac Newton 8, PTM, 28760 Tres Cantos)

  • Beatriz Muñiz

    (IMN-Instituto de Micro y Nanotecnología (CNM-CSIC), Isaac Newton 8, PTM, 28760 Tres Cantos)

  • Fatima Ibrahim

    (Univ. Grenoble Alpes, CEA, CNRS, Spintec)

  • Mairbek Chshiev

    (Univ. Grenoble Alpes, CEA, CNRS, Spintec
    Institut Universitaire de France)

  • Aliona Nicolenco

    (Universitat Autònoma de Barcelona)

  • Maciej O. Liedke

    (Institute of Radiation Physics, Helmholtz-Zentrum Dresden–Rossendorf)

  • Maik Butterling

    (Institute of Radiation Physics, Helmholtz-Zentrum Dresden–Rossendorf)

  • Andreas Wagner

    (Institute of Radiation Physics, Helmholtz-Zentrum Dresden–Rossendorf)

  • Veronica Sireus

    (Universitat Autònoma de Barcelona)

  • Llibertat Abad

    (Institut de Microelectrònica de Barcelona, IMB-CNM (CSIC), Campus UAB)

  • Christopher J. Jensen

    (Georgetown University)

  • Kai Liu

    (Georgetown University)

  • Josep Nogués

    (Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra
    Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23)

  • José L. Costa-Krämer

    (IMN-Instituto de Micro y Nanotecnología (CNM-CSIC), Isaac Newton 8, PTM, 28760 Tres Cantos)

  • Enric Menéndez

    (Universitat Autònoma de Barcelona)

  • Jordi Sort

    (Universitat Autònoma de Barcelona
    Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23)

Abstract

Magneto-ionics, understood as voltage-driven ion transport in magnetic materials, has largely relied on controlled migration of oxygen ions. Here, we demonstrate room-temperature voltage-driven nitrogen transport (i.e., nitrogen magneto-ionics) by electrolyte-gating of a CoN film. Nitrogen magneto-ionics in CoN is compared to oxygen magneto-ionics in Co3O4. Both materials are nanocrystalline (face-centered cubic structure) and show reversible voltage-driven ON-OFF ferromagnetism. In contrast to oxygen, nitrogen transport occurs uniformly creating a plane-wave-like migration front, without assistance of diffusion channels. Remarkably, nitrogen magneto-ionics requires lower threshold voltages and exhibits enhanced rates and cyclability. This is due to the lower activation energy for ion diffusion and the lower electronegativity of nitrogen compared to oxygen. These results may open new avenues in applications such as brain-inspired computing or iontronics in general.

Suggested Citation

  • Julius Rojas & Alberto Quintana & Aitor Lopeandía & Joaquín Salguero & Beatriz Muñiz & Fatima Ibrahim & Mairbek Chshiev & Aliona Nicolenco & Maciej O. Liedke & Maik Butterling & Andreas Wagner & Veron, 2020. "Voltage-driven motion of nitrogen ions: a new paradigm for magneto-ionics," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19758-x
    DOI: 10.1038/s41467-020-19758-x
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    Cited by:

    1. Zheng Ma & Laura Fuentes-Rodriguez & Zhengwei Tan & Eva Pellicer & Llibertat Abad & Javier Herrero-Martín & Enric Menéndez & Nieves Casañ-Pastor & Jordi Sort, 2023. "Wireless magneto-ionics: voltage control of magnetism by bipolar electrochemistry," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. M. Usama Hasan & Alexander E. Kossak & Geoffrey S. D. Beach, 2023. "Large exchange bias enhancement and control of ferromagnetic energy landscape by solid-state hydrogen gating," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    3. Gong Chen & Colin Ophus & Alberto Quintana & Heeyoung Kwon & Changyeon Won & Haifeng Ding & Yizheng Wu & Andreas K. Schmid & Kai Liu, 2022. "Reversible writing/deleting of magnetic skyrmions through hydrogen adsorption/desorption," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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