A. P. Nosov, I. V. Gribov, N. A. Moskvina, A. V. Druzhinin, S. S. Dubinin, V. V. Izyurov, K. A. Merentsova, M. S. Artemiev

LOW-FREQUENCY RESONANCE IN LAMINATED FeGa-FeCoGa/METGLAS/PZT STRUCTURES

The paper studies the influence of the composition of a thin-film composite magnetostrictive ferromagnet on the magnetoelectric effect (ME) in ferromagnet/piezoelectric/ferromagnet laminated trilayers at resonant frequencies. The PZT material was used in the piezoelectric layer. The graded composite magnetostrictive ferromagnet with a thickness gradient of the magnetostriction coefficient was obtained by pulsed laser deposition of thin Fe0.72Ga0.28 or Fe0.62Co0.19Ga0.19 films on the surface of Metglas-type 440A amorphous ribbons. The ME was investigated at resonant frequencies of 3 and 9.32 kHz. It is shown that the maximum ME value increases with frequency. The deposition of magnetostrictive thin films decreases the maximum ME value, but increases the Q-factor. The results can be useful for developing sensors of static and low-frequency magnetic fields for magnetic nondestructive testing applications under resonant excitation conditions.

Acknowledgments: The research was carried out under the state assignment from the Ministry of Science and Higher Education of the Russian Federation (theme Function, No. AAAA-A19-119012990095-0). The scientific equipment installed at the Testing Center of Nanotechnology and Advanced Materials collaborative access center (IMP UB RAS) was used in the study.

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