Dresden 2026 – scientific programme
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MA: Fachverband Magnetismus
MA 37: Non-Skyrmionic Magnetic Textures
MA 37.2: Talk
Wednesday, March 11, 2026, 15:15–15:30, POT/0351
Magnetoelastic Fingerprints in Dysprosium Iron Garnet Thin Films: Inversion of Effective Local Anisotropy within Domain Walls — •Lukas D. Ćavar1, Julian Skolaut2, Olena Gomonay1, Miela J. Gross3, Khang Vi Becker1, Simon J. Sochiera1, Dirk Backes4, Caroline A. Ross3, and Angela Wittmann1 — 1Johannes Gutenberg Universität, Mainz, DE — 2Christian-Albrechts-Universität zu Kiel, DE — 3Massachusetts Institute of Technology, Cambridge, MA, USA — 4Diamond Light Source, Oxfordshire, UK
A promising direction for future computing devices is to embed topological spin textures in compensated collinear magnetic systems. Yet in the absence of significant stray fields, these textures must be stabilized unconventionally. While we observe a wide variety of topological textures in magnetoelastic systems, including the altermagnet α-Fe2O3 (`hematite') and the ferrimagnet dysprosium iron garnet (DyIG), their specific origin is not clear. Here, we compare Néel vector mapping via x-ray magnetic linear dichroism photoemission electron microscopy and stray-field imaging by scanning nitrogen vacancy center magnetometry to show that the DyIG 360° domain wall profile exhibits significant deviations from the classical domain wall profile. These are consistent with an inversion of the effective local anisotropy, i.e. the easy and hard axes trading places within the domain wall body. Thereby we obtain quantitative insight into the mechanism, scale, and energetics of the magnetoelastic stabilization of topological textures in thin films with strong magneto-elastic coupling and uncover a new degree of straintronic freedom for next-generation spin devices.
Keywords: dysprosium iron garnet; domain walls; magnetoelasticity; topological textures; scanning nitrogen vacancy magnetometry