Sánchez-Tejerina, LuisOsuna Ruiz, DavidMartínez, EduardoLópez-Díaz, LuisRaposo VíctorAlejos, Óscar2024-10-042024-10-042024Sanchez-Tejerina, L., Osuna Ruiz, D., Martínez, E., López-Díaz, L., Raposo V., Alejos, Ó. (2024). Spin waves in ferrimagnets near the angular magnetization compensation temperature: a micromagnetic study. Applied Physics Letters, 125(8). https://doi.org/10.1063/5.0189745.0003-695110.1063/5.0189745https://academica-e.unavarra.es/handle/2454/51992Spin wave propagation along a ferrimagnetic strip with out-of-plane magnetization is studied by means of micromagnetic simulations. The ferrimagnetic material is considered to be formed by two antiferromagnetically coupled sub-lattices. Two critical temperatures can be defined for such systems: that of magnetization compensation and that of angular momentum compensation, both different due to distinct Landé factors for each sub-lattice. Spin waves in the strip are excited by a spin current injected at one of its edges. The obtained dispersion diagrams show exchange-dominated forward volume spin waves. For a given excitation frequency, the Néel vector describes highly eccentric orbits, the eccentricity depending on temperature, whose semi-major axis is oriented differently at distinct locations on the FiM strip.application/pdfapplication/zipengSpin wavesFerrimagnetsMagnetization compensationinfo:eu-repo/semantics/article2024-10-04info:eu-repo/semantics/openAccess