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MA: Fachverband Magnetismus
MA 46: Poster II
MA 46.65: Poster
Thursday, March 21, 2024, 15:00–18:00, Poster C
Ferromagnetic resonance simulations of arranged magnetic nanoparticles — •Felix Schug1,2, Nils Neugebauer2,3, Michael Czerner1,2, and Christian Heiliger1,2 — 1Institute for Theoretical Physics, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, 35392 Giessen, Germany — 2Center for Materials Research (LaMa), Justus Liebig University Giessen, Heinrich-Buff-Ring 16, 35392 Giessen, Germany — 3Institute of Experimental Physics I, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
Magnetic nanoparticles (MNPs) are utilized in a variety of electronic applications due to their unique magnetic characteristics. Mesocrystals, composed of arranged MNPs, offer additional degrees of freedom to manipulate these magnetic characteristics. Understanding the magnetic properties of mesocrystals is crucial for optimizing their use in applications. In this study, we used the publically available micromagnetic simulation tool OOMMF, to investigate mesocrystals composed of magnetite MNPs. We arranged the mesocrystals on a periodic grid with varying inter-mesocrystal distances by employing two-dimensional periodic boundary conditions. Our simulations of ferromagnetic resonance (FMR) spectra revealed various resonance frequencies. A spatially resolved analysis was conducted to investigate the origins of these frequencies within the mesocrystal.
Keywords: Micromagnetic Simulations; MuMag; Magnetic Nanoparticles (MNP); Ferromagnetic resonance spectroscopy (FMR); Mesocrystal