Donnelly, C., Gliga, S., Scagnoli, V., Holler, M., Raabe, J., Heyderman, L. J. and Guizar-Sicairos, M. (2018) Tomographic reconstruction of a three-dimensional magnetization vector field. New Journal of Physics, 20(8), 083009. (doi: 10.1088/1367-2630/aad35a)
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Abstract
Using x-ray magnetic nanotomography the internal magnetization structure within extended samples can be determined with high spatial resolution and element specificity, without the need for assumptions or prior knowledge of the magnetic properties of a sample. Here we present the details of a new algorithm for the reconstruction of a three-dimensional magnetization vector field, discussing both the mathematical description of the problem, and details of the gradient-based iterative reconstruction routine. To test the accuracy of the algorithm the method is demonstrated for a complex simulated magnetization configuration obtained from micromagnetic simulations. The reconstruction of the complex three-dimensional magnetic nanostructure, including the surroundings of magnetic singularities (or Bloch points), exhibits an excellent qualitative and quantitative agreement with the simulated magnetic structure. This method provides a robust route for the reconstruction of internal three-dimensional magnetization structures obtained from x-ray magnetic tomographic datasets, which can be acquired with either hard or soft x-rays, and can be applied to a wide variety of three-dimensional magnetic systems.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Gliga, Dr Sebastian |
| Authors: | Donnelly, C., Gliga, S., Scagnoli, V., Holler, M., Raabe, J., Heyderman, L. J., and Guizar-Sicairos, M. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | New Journal of Physics |
| Publisher: | IOP Publishing |
| ISSN: | 1367-2630 |
| ISSN (Online): | 1367-2630 |
| Published Online: | 07 August 2018 |
| Copyright Holders: | Copyright © 2018 The Authors |
| First Published: | First published in New Journal of Physics 20(8):083009 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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