Open Access3D reconstruction of magnetization from dichroic soft X‐ray transmission tomography
Author(s) -
Hierro-Rodriguez Aurelio,
Gürsoy Doga,
Phatak Charudatta,
Quirós Carlos,
Sorrentino Andrea,
Álvarez-Prado Luis Manuel,
Vélez Maria,
Martín José Ignacio,
Alameda José Maria,
Pereiro Eva,
Ferrer Salvador
Publication year - 2018
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577518005829
Subject(s) - algebraic reconstruction technique , magnetization , tomographic reconstruction , iterative reconstruction , optics , dichroic glass , materials science , tomography , magnetic field , x ray magnetic circular dichroism , magnetic circular dichroism , physics , spintronics , iterative method , computer science , algorithm , condensed matter physics , computer vision , spectral line , quantum mechanics , astronomy , ferromagnetism
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.