2026-05-05T21:48:08Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/757792025-05-21T12:13:10Zcom_10324_39910com_10324_894col_10324_39911

Spin waves in ferrimagnets near the angular magnetization compensation temperature: A micromagnetic study Sánchez-tejerina San José, Luis Osuna Ruiz, David Martínez, Eduardo López Díaz, Luis Raposo, Víctor Alejos Ducal, Óscar AIP Publishing Spin 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. GIR Materiales Magnéticos SA114P20 from Junta de Castilla y León PID2020117024GB-C41 funded by MCIN/AEI/10.13039/501100011033 Project MagnEFi, Grant Agreement No. 860060, (H2020-MSCA-ITN-2019) funded by the European Commission 2025-05-20T11:46:16Z 2025-05-20T11:46:16Z 2024 dataset info:eu-repo/semantics/publishedVersion https://uvadoc.uva.es/handle/10324/75779 10.71569/at5r-0146 eng info:eu-repo/semantics/openAccess text/unknown Hispana TEXT http://rightsstatements.org/vocab/CNE/1.0/ UVaDOC. Repositorio Documental de la Universidad de Valladolid https://uvadoc.uva.es/handle/10324/75779