3D reconstruction of magnetization from dichroic soft X-ray transmission tomography

The development of magnetic nanostructures for applications in spintronics requires methods capable of visualizing their magnetization. Soft X-ray magnetic imaging combined with circular magnetic dichroism allows nanostructures up to 100 – 300   nm in thickness to be probed with resolutions of 20 – 40   nm. Here a new iterative tomographic reconstruction method to extract the three-dimensional magnetization configuration from tomographic projections is presented. The vector field is reconstructed by using a modified algebraic reconstruction approach based on solving a set of linear equations in an iterative manner. The application of this method is illustrated with two examples (magnetic nano-disc and micro-square heterostructure) along with comparison of error in reconstructions, and convergence of the algorithm.

Source: Journal of Synchrotron Radiation - May 30, 2018 Category: Physics Authors: Hierro-Rodriguez, A. G ü rsoy, D. Phatak, C. Quir ó s, C. Sorrentino, A. Á lvarez-Prado, L.M. V é lez, M. Mart í n, J.I. Alameda, J.M. Pereiro, E. Ferrer, S. Tags: soft X-ray transmission microscopy X-ray transmission tomography vector field tomography magnetization configuration reconstruction research papers Source Type: research