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MA: Fachverband Magnetismus

MA 57: Thin Films: Magnetic Coupling Phenomena / Exchange Bias and Magnetic Anisotropy

MA 57.2: Vortrag

Freitag, 13. März 2026, 09:45–10:00, POT/0112

Tailoring Magnetic Anisotropy Energy (MAE) with ion irradiation on Fe (110) — •Gabriel Gray¹, Kilian Lenz¹, Aleksandra Lindner¹, Fabian Ganss¹, Jürgen Fassbender¹, René Hübner¹, Rodolfo Gallardo², Pedro Landeros², and Jürgen Lindner¹ — ¹Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Dresden, Germany — ²Universidad Técnica Federico Santa María, Department of Physics, Valparaíso, Chile

Our research focuses on the changes in Magnetic Anisotropy Energies (MAE) in epitaxially grown Fe (110) thin films. We aim to create spatially defined regions with tunable magnetic anisotropies, modified through local ion implantation, in order to engineer spin textures and establish controllable spin-wave channels within the ferromagnetic thin film.
The Fe films were irradiated with Cr ions at varying kinetic energies and fluences. Subsequent magnetic characterization was performed using ferromagnetic resonance, while structural characterization was done by x-ray diffractometry, transmission electron microscopy and energy-dispersive x-ray spectroscopy.
Our results reveal a clear correlation between ion fluence and modifications in uniaxial magneto-crystalline anisotropy, while cubic anisotropy and the effective magnetization remain largely unaffected.

Keywords: Magnetization Dynamics; Thin Films; Ferromagnetic Resonance; Ion Irradiation