Abstract
The 1D model of an acoustic resonator structure with a ferromagnetic layer on a nonmagnetic substrate and piezoelectric thin-film piezoelectric transducer is considered. The double resonance conditions, i.e., the magnetoelastic resonance in a magnetic layer and purely elastic resonance in the whole multilayer structure are investigated. The acoustic generation of spin waves in these conditions is characterized by the behavior of the electric impedance of a transducer in the magnetic field. The analytical expression for the impedance is obtained. This expression is derived taking into account the disorientation of the transducer polarization and magnetic field. The numerical calculations show that even the weak disorientation ~5° causes the manifestation of the acoustic birefringence phenomenon.
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Funding
This work was carried out within the framework of the state task “Spintronics” and partly supported by the Russian Foundation for Basic Research, project no. 20-07-01075.
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Polzikova, N.I., Alekseev, S.G. Acoustic Birefrindence in a Composite Magnetoacoustic Resonator. J. Commun. Technol. Electron. 67, 1459–1464 (2022). https://doi.org/10.1134/S1064226922120166
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DOI: https://doi.org/10.1134/S1064226922120166