Abstract—The “pump-probe” scheme considers oscillations of magnetization in a normally magnetized plate with magnetoelastic properties, which occur under the action of an elastic pulse excited by a powerful pulsed laser. The time evolution of magnetic oscillations excited by an elastic pulse is studied, and the corresponding precession portraits are constructed. For the case where the resonant frequencies of magnetic and elastic oscillations coincide and the relaxation times of both are close, three characteristic regimes are noted in which magnetization oscillations are nonstationary, corresponding to small, medium, and high amplitudes of the exciting pulse. The features of the observed phenomena are interpreted based on the impact nature of the excited elastic oscillations.
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Funding
The study was supported in part by a state task and with the partial support of the Russian Foundation for Basic Research, project no. 20-55-53019 GFEN_a, as well as the Russian Science Foundation, project no. 21-72-20048 and 21-47-00019, and the Government of the Republic of Komi and Russian Foundation for Basic Research, grant from the Russian Foundation for Basic Research and the Government of the Komi Republic, no. 20-42-110004, r_a.
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Vlasov, V.S., Makarov, P.A., Shavrov, V.G. et al. Impact Excitation of Magnetic Oscillations by an Elastic Displacement Pulse. J. Commun. Technol. Electron. 67, 876–881 (2022). https://doi.org/10.1134/S1064226922070154
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DOI: https://doi.org/10.1134/S1064226922070154