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γ-BaFe2O4: a fresh playground for room temperature multiferroicity

Author

Listed:
  • Fabio Orlandi

    (ISIS Facility, Rutherford Appleton Laboratory)

  • Davide Delmonte

    (IMEM-CNR)

  • Gianluca Calestani

    (Life Sciences and Environmental Sustainability, University of Parma)

  • Enrico Cavalli

    (Life Sciences and Environmental Sustainability, University of Parma)

  • Edmondo Gilioli

    (IMEM-CNR)

  • Vladimir V. Shvartsman

    (University of Duisburg-Essen)

  • Patrizio Graziosi

    (CNR-ISMN)

  • Stefano Rampino

    (IMEM-CNR)

  • Giulia Spaggiari

    (IMEM-CNR
    Physical and Computer Sciences, University of Parma)

  • Chao Liu

    (Shanghai University
    Unità di Ricerca presso Terzi c/o Università “G. D’Annunzio”)

  • Wei Ren

    (Shanghai University)

  • Silvia Picozzi

    (Unità di Ricerca presso Terzi c/o Università “G. D’Annunzio”)

  • Massimo Solzi

    (Physical and Computer Sciences, University of Parma)

  • Michele Casappa

    (IMEM-CNR
    Life Sciences and Environmental Sustainability, University of Parma)

  • Francesco Mezzadri

    (IMEM-CNR
    Life Sciences and Environmental Sustainability, University of Parma)

Abstract

Multiferroics, showing the coexistence of two or more ferroic orderings at room temperature, could harness a revolution in multifunctional devices. However, most of the multiferroic compounds known to date are not magnetically and electrically ordered at ambient conditions, so the discovery of new materials is pivotal to allow the development of the field. In this work, we show that BaFe2O4 is a previously unrecognized room temperature multiferroic. X-ray and neutron diffraction allowed to reveal the polar crystal structure of the compound as well as its antiferromagnetic behavior, confirmed by bulk magnetometry characterizations. Piezo force microscopy and electrical measurements show the polarization to be switchable by the application of an external field, while symmetry analysis and calculations based on density functional theory reveal the improper nature of the ferroelectric component. Considering the present findings, we propose BaFe2O4 as a Bi- and Pb-free model for the search of new advanced multiferroic materials.

Suggested Citation

  • Fabio Orlandi & Davide Delmonte & Gianluca Calestani & Enrico Cavalli & Edmondo Gilioli & Vladimir V. Shvartsman & Patrizio Graziosi & Stefano Rampino & Giulia Spaggiari & Chao Liu & Wei Ren & Silvia , 2022. "γ-BaFe2O4: a fresh playground for room temperature multiferroicity," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-35669-5
    DOI: 10.1038/s41467-022-35669-5
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    References listed on IDEAS

    as
    1. Tobias Kosub & Martin Kopte & Ruben Hühne & Patrick Appel & Brendan Shields & Patrick Maletinsky & René Hübner & Maciej Oskar Liedke & Jürgen Fassbender & Oliver G. Schmidt & Denys Makarov, 2017. "Purely antiferromagnetic magnetoelectric random access memory," Nature Communications, Nature, vol. 8(1), pages 1-7, April.
    2. Eric Bousquet & Matthew Dawber & Nicolas Stucki & Céline Lichtensteiger & Patrick Hermet & Stefano Gariglio & Jean-Marc Triscone & Philippe Ghosez, 2008. "Improper ferroelectricity in perovskite oxide artificial superlattices," Nature, Nature, vol. 452(7188), pages 732-736, April.
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