The magnetoelectric effect in the electromechanical resonance region is studied experimentally for the first time in structures in the form of gallium arsenide substrates with their two sides metallized with thin nickel or cobalt films and gold films (Ni-GaAs-Au and Co-GaAs-Au). The dependence of the magnetoelectric effect on the magnetization field in a Ni-GaAs-Au structure has an anomalous shape that is uncharacteristic of known composite magnetoelectric materials based on ceramic piezoelectrics. The maximum magnetoelectric coefficient under resonance is 81.2 V/A. This corresponds to the giant magnetoelectric effect at room temperature. It is shown that this resonance is characterized by a high Q-factor of up to 8000.

Developing efficient power-splitting device for multichannel distributed low-frequency (LF) mechanical antenna (MA) communication system is challenging since conventional LF power-splitting technologies rely on lumped resistive elements with unsatisfied efficiency and poor electrical isolation. In view of this, a magnetoelectric (ME) power splitter consisting of nickel–zinc ferrite and Rosen-type piezoelectric transformer composite was modeled, fabricated, and packaged with a supporting theory to quantitatively describe the power-splitting ratio. To reveal the energy loss between interlayers, a noncontact optical Doppler measurement was employed to track the energy losses between interlayers. Results show that favorable input-to-output isolation with a high insulation voltage of 2.35 kV in the packaged device was obtained, and the maximum PE for Port I and Port II reached 34.45% and 35.87% at R _L = 1 kΩ and R _L = 13 kΩ, respectively, in tailored sample with thickness ratio of n _p = 0.412, and then the measured splitting ratio approximates 1.1 and matches well with the theoretical predictions. Finally, the proposed ME splitter was deployed in a dual-channel distributed LF communication system for implementing each MA excitation, the system divided one source into two independent transmitting ME antennas and accomplished 20 bps amplitude shift keying modulated signal delivery to searching coils under a distance of 125 cm and an input power of 3.57 mW.

This paper studied the influence of external electric and magnetic fields on the magnetoelectric properties of layered structures of metal-piezoelectric-metal. The structures under study had the shape of a square 4 mm wide and were obtained in two steps: first, by the chemical deposition of nickel with a thickness of 0.5 μm, and then by the electrochemical deposition of nickel with a thickness of 50 μm on each side onto a lead zirconate–lead titanate substrate. Electrochemical deposition was carried out without a magnetic field on both non-polarized and polarized ceramics. Electrochemical deposition was also carried out in a magnetic field on a non-polarized and polarized PZT ceramic substrate. A magnetic field of 500 Oe at electrochemical deposition was applied in all cases in the direction of structure polarization. The maximum ME voltage coefficient 300 mV/(cmOe) was obtained at transverse orientation at bias magnetic field near 20 Oe.

Linear and nonlinear magnetoelectric (ME) effects in lead zirconate titanate (PZT)–nickel ferrite bulk composites have been experimentally studied. The maximum values of a ME response signal for the linear and nonlinear ME effects amounted to 260 mV/A and 34 kV/m, respectively. A relationship between the linear and nonlinear ME effects is established based on analysis of experimental data.