Physics-informed X-ray tomography of magnetization and material parameters

Abstract

Three-dimensional spin textures are stabilized by microscopic interactions within their host materials. X-ray vector tomography can image these nanoscale structures, but weak magnetic contrast and a limited range of viewing angles often leave parts of the magnetization poorly determined. Here we show that a reconstruction constrained by the micromagnetic energy recovers the three-dimensional magnetization from such data and gains sensitivity to the underlying material interactions. Applied to the chiral magnet Co₈Zn₉Mn₃, the method resolves the three-dimensional helical texture even from a small fraction of the dual-axis projections typically required for a successful tomographic reconstruction, or from a single tilt axis alone. By testing which ratio of exchange to Dzyaloshinskii-Moriya interaction in the reconstruction best reproduces the measured projections, we obtain a value for the sample that differs by about 10 % from the literature value derived from the helical winding period. Taken together, our findings suggest a way to reduce the time needed for vector tomography and to extend it to determining fundamental magnetic interactions in a material.

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BibTeX RIS

BibTeX

@misc{setescak2026physicsinformed,
  title = {{Physics-informed X-ray tomography of magnetization and material parameters}},
  author = {Alexander Setescak and Polly Mitchell and Luke J. R. Higgins and Burkhard Kaulich and Luke Turnbull and Rikako Yamamoto and Marina Raboni Ferreira and Daniel A. Mayoh and Geetha Balakrishnan and Anuj Chavan and Dieter Suess and Amalio Fernández-Pacheco and Manuel Guizar-Sicairos and Claire Donnelly and Claas Abert},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.00528},
  eprint = {2611.00528},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.00528},
  note = {CC BY 4.0},
}

RIS

TY  - UNPB
TI  - Physics-informed X-ray tomography of magnetization and material parameters
AU  - Alexander Setescak
AU  - Polly Mitchell
AU  - Luke J. R. Higgins
AU  - Burkhard Kaulich
AU  - Luke Turnbull
AU  - Rikako Yamamoto
AU  - Marina Raboni Ferreira
AU  - Daniel A. Mayoh
AU  - Geetha Balakrishnan
AU  - Anuj Chavan
AU  - Dieter Suess
AU  - Amalio Fernández-Pacheco
AU  - Manuel Guizar-Sicairos
AU  - Claire Donnelly
AU  - Claas Abert
PY  - 2026
DA  - 2026/11/01
PB  - arXiv
DO  - 10.48550/arxiv.2611.00528
UR  - https://arxiv.org/abs/2611.00528
AB  - Three-dimensional spin textures are stabilized by microscopic interactions within their host materials. X-ray vector tomography can image these nanoscale structures, but weak magnetic contrast and a limited range of viewing angles often leave parts of the magnetization poorly determined. Here we show that a reconstruction constrained by the micromagnetic energy recovers the three-dimensional magnetization from such data and gains sensitivity to the underlying material interactions. Applied to the chiral magnet Co_8Zn_9Mn_3, the method resolves the three-dimensional helical texture even from a small fraction of the dual-axis projections typically required for a successful tomographic reconstruction, or from a single tilt axis alone. By testing which ratio of exchange to Dzyaloshinskii-Moriya interaction in the reconstruction best reproduces the measured projections, we obtain a value for the sample that differs by about 10 % from the literature value derived from the helical winding period. Taken together, our findings suggest a way to reduce the time needed for vector tomography and to extend it to determining fundamental magnetic interactions in a material.
ER  -

Abstract

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