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arXiv · 2412.19902

Spin waves in Co$_2$FeGe films

D. Popadiuk·A. Vovk·S. A. Bunyaev·G. N. Kakazei·J. P. Araujo·P. Strichovanec·P. A. Algarabel·V. Golub·A. Kravets·V. Korenivski·A. Trzaskowska
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Abstract

The dynamic magnetic properties of Full Heusler alloy thin films of Co$_2$FeGe, grown on MgO (001) substrates under different thermal conditions, were investigated. Brillouin light scattering and ferromagnetic resonance measurements revealed that depositing at room temperature followed by annealing at 300 deg C for 1 hour produces the best results for maximizing magnetization, exchange stiffness, and minimizing spin-dynamic dissipation in the films, which are desirable characteristics for high-speed spintronic devices. Additionally, strong hybridization of spin waves in the Damon-Eshbach geometry was observed, which is attractive for applications in magnonic signal processing circuits.

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D. Popadiuk, A. Vovk, S. A. Bunyaev, G. N. Kakazei, J. P. Araujo, P. Strichovanec, P. A. Algarabel, V. Golub, A. Kravets, V. Korenivski, A. Trzaskowska. 2024-12-27. Spin waves in Co$_2$FeGe films. https://arxiv.org/abs/2412.19902

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