Regensburg 2025 – scientific programme
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MA: Fachverband Magnetismus
MA 33: Non-Skyrmonic Magnetic Textures I
MA 33.8: Talk
Thursday, March 20, 2025, 11:30–11:45, H16
Towards stabilizing 360° domain walls in dysprosium iron garnet through magnetoelastic interactions — •Julian Skolaut1,2, Lukas Cavar1, Olena Gomonay1, Miela Gross3, Simon Sochiera1, David Anthofer1, Evangelos Golias4, Dirk Backes5, Caroline A. Ross3, and Angela Wittmann1 — 1JGU, Mainz, DE — 2present address: IEAP, CAU, Kiel, DE — 3MIT, Cambridge, US — 4MAX IV, Lund, SE — 5DLS, Didcot, UK
Topologically protected magnetic textures, including 360° domain walls (DWs), are of considerable interest for next-generation data storage and computing technologies. Realizing such textures in ferri- and antiferromagnetic systems allows us to capitalize on these materials' intrinsic robustness to external perturbations and faster dynamics. However, well-established mechanisms, such as stray fields, cannot stabilize 360° DWs at zero magnetic field. Hence, we must turn to more exotic stabilization mechanisms. One promising candidate is magnetoelastic destressing mediated by the substrate/magnetic film interface. Here, we report the observation of 360° DWs in ferrimagnetic dysprosium iron garnet thin films. These topological DWs are present in applied magnetic fields from zero to above coercivity, suggesting topological protection, and can be manipulated using magnetic fields. Upon return to zero magnetic field, the initial state is not reproduced, indicating hysteresis. This hints toward stabilization via magnetoelastic interactions. Corroborating these results with insights from other materials and theory will further the understanding of exotic mechanisms, such as destressing fields, as a source of topological magnetic textures.
Keywords: Topology; 360 Degree Domain Walls; XMLD PEEM; Magnetoelastic Interactions; Rare Earth Iron Garnets