A. P. Nosov, I. V. Gribov, N. A. Moskvina, A. V. Druzhinin, V. I. Osotov, V. A. Bespalov, B. A. Loginov

MAGNETOELECTRIC SENSORS OF MAGNETIC FIELD BASED ON LAMINATED STRUCTURES WITH COMPOSITE MAGNETOSTRICTIVE LAYERS

The magnetoelectric effect (ME) in three-layered laminated structures of the “composite magnetostrictive ferromagnetic material / ferroelectric / composite magnetostrictive ferromagnetic material” type is investigated. The composite magnetostrictive ferromagnetic material consists of “Metglas”-type amorphous ribbons on which magnetostrictive Fe_0.72Ga_0.28 or Fe_0.62Co_0.19Ga_0.19 thin films are deposited by pulsed laser deposition. The ME is investigated for dc and ac magnetic fields in the frequency range from 20 Hz to 10 kHz. It is shown experimentally that the deposition of the Fe_0.72Ga_0.28 films increases the maximum value of the ME in laminated structures in the whole frequency range investigated, while the deposition of the Fe_0.62Co_0.19Ga_0.19 films decreases this value. The laminated structures with Fe_0.72Ga_0.28 films operating under excitation with the frequency of 110 Hz are the most appropriate for applications in magnetic nondestructive testing.

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