SKM 2023 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 43: Magnetic Imaging Techniques II
MA 43.1: Vortrag
Donnerstag, 30. März 2023, 15:00–15:15, HSZ 401
Three-dimensional tomographic imaging of the magneti- zation vector field using Fourier transform holography — •Marisel Di Pietro Martínez1,2, Alexis Wartelle1,3, Carlos Herrero Martínez1, Farid Fettar4, Jean-François Motte4, Claire Donnelly2, Luke Turnbull5, Feodor Ogrin5, Gerrit van der Laan6, Horia Popescu7, Nicolas Jaouen7, Flora Yakhou-Harris3, and Guillaume Beutier1 — 1UGA, CNRS, G-INP, SIMaP, Grenoble, France — 2MPI-CPfS, Dresden, German — 3ESRF, Grenoble, France — 4UGA, CNRS, G-INP, Institut Néel, Grenoble, France — 5School of Phys. and Engineering, University of Exeter, Exeter, UK — 6Diamond Light Source, Didcot OX11 0DE, UK — 7Synchrotron SOLEIL, Gif-sur-Yvette, France
Three-dimensional magnetic textures have recently attracted increasing interest both from a fundamental and a technological point of view. This emergent field of research comes with the need of new characterization techniques, specifically tomographic imaging. Here, we present a new tomographic technique based on Fourier transform holography, a lensless imaging technique that uses a known reference in the sample to retrieve the object of interest from its diffraction pattern in one single step of calculation. We obtain a 3D vectorial image of a 850nm-thick extended Fe/Gd multilayer in a 5000nm-diameter field of view with a resolution of 100nm, that reveals worm-like domains with magnetization pointing mostly out of plane near the surface of the sample but that falls in-plane near the substrate. As an outlook, this technique will enable a 3D study on the response to an external magnetic field.