Regensburg 2025 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 1: Into the Third (and Fourth) Dimension: Imaging Methods for 3D Nanomagnetism (joint session MA/TUT)

MA 1.3: Tutorium

Sonntag, 16. März 2025, 17:30–18:15, H4

3D magnetic imaging: an experimental window to study 3D magnetization at the nanoscale — •Aurelio Hierro-Rodriguez — Department of Physics, University of Oviedo,33007, Oviedo, Spain — CINN (CSIC-University of Oviedo) , 33940, El Entrego, Spain

The synergetic confluence of technological and scientific developments in nanofabrication and characterization techniques is paving the way towards the advance in Three-Dimensional Nanomagnetism, fuelled by the richness of phenomena and technological potential of the exploitation of the magnetization vector field in their natural dimensionality: three dimensions. In this lecture, a broad picture of the importance of the topic, in the framework of the novel physics that can be explored and exploited will be given, with a brief description of the methods that allow to fabricate almost any 3D magnetic geometry with nanometer resolution. The core of the lecture will deal with the advanced magnetic imaging techniques, which are opening a window towards the characterization of the full three-dimensional magnetization vector. Specifically, X-ray based magnetic vector tomography will be described and exemplified, showing the capabilities of the technique to volume resolve the magnetization vector field in arbitrary systems with nanometer resolution. These developments in vector magnetic imaging are making possible a change in the actual paradigm on how magnetization is characterized and studied at the nanoscale, by bringing a direct experimental probe to realize experimental micromagnetism.

Keywords: 3D nanomagnetism; Vector Tomography; X-ray Magnetic Imaging