Spin waves in ferrimagnets near the angular magnetization compensation temperature: A micromagnetic study
收藏DataCite Commons2025-05-21 更新2026-05-07 收录
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https://uvadoc.uva.es/handle/10324/75779
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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.
提供机构:
AIP Publishing
创建时间:
2025-05-21



