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Revealing 3D magnetization of thin films with soft X-ray tomography: magnetic singularities and topological charges

Author

Listed:
  • A. Hierro-Rodriguez

    (SUPA, School of Physics and Astronomy, University of Glasgow
    Depto. Física, Universidad de Oviedo)

  • C. Quirós

    (Depto. Física, Universidad de Oviedo
    CINN (CSIC – Universidad de Oviedo))

  • A. Sorrentino

    (ALBA Synchrotron)

  • L. M. Alvarez-Prado

    (Depto. Física, Universidad de Oviedo
    CINN (CSIC – Universidad de Oviedo))

  • J. I. Martín

    (Depto. Física, Universidad de Oviedo
    CINN (CSIC – Universidad de Oviedo))

  • J. M. Alameda

    (Depto. Física, Universidad de Oviedo
    CINN (CSIC – Universidad de Oviedo))

  • S. McVitie

    (SUPA, School of Physics and Astronomy, University of Glasgow)

  • E. Pereiro

    (ALBA Synchrotron)

  • M. Vélez

    (Depto. Física, Universidad de Oviedo
    CINN (CSIC – Universidad de Oviedo))

  • S. Ferrer

    (ALBA Synchrotron)

Abstract

The knowledge of how magnetization looks inside a ferromagnet is often hindered by the limitations of the available experimental methods which are sensitive only to the surface regions or limited in spatial resolution. Here we report a vector tomographic reconstruction based on soft X-ray transmission microscopy and magnetic dichroism data, which has allowed visualizing the three-dimensional magnetization in a ferromagnetic thin film heterostructure. Different non-trivial topological textures have been resolved and the determination of their topological charge has allowed us to identify a Bloch point and a meron-like texture. Our method relies only on experimental data and might be of wide application and interest in 3D nanomagnetism.

Suggested Citation

  • A. Hierro-Rodriguez & C. Quirós & A. Sorrentino & L. M. Alvarez-Prado & J. I. Martín & J. M. Alameda & S. McVitie & E. Pereiro & M. Vélez & S. Ferrer, 2020. "Revealing 3D magnetization of thin films with soft X-ray tomography: magnetic singularities and topological charges," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-20119-x
    DOI: 10.1038/s41467-020-20119-x
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