The magnetoelectric (ME) antenna with acoustic driven has become a new scheme for solving remote wireless communication from ULF to VLF bands due to its small size and anti-interference solid capabilities. The paper presents a model based on electrostriction, magnetostriction, and Maxwell equations. The capability at the resonant frequency ( f_r ) of electric field ( E ) and magnetic flux density ( B ) radiation in space are examined through variations in voltage ( V ), magnetic field ( H ), and structure. This model relates the V to the spatial B distribution and lays a foundation for the ME antenna’s structural design and characteristic research. The actual test shows the asymmetric ME antenna has excellent electromagnetic (EM) radiation ability in the SLF band. The magnetic flux intensity can reach 2.2 nT at 1 m. By constructing ME antenna arrays, radiation intensity can also be superimposed. The value of magnetic flux density reaches 7.2nT@1m at 110 Hz and 3.8nT@1m at quasi-static frequency. This study demonstrates that asymmetric ME antenna arrays can be used for narrowband communication in the SLF and broadband long-distance communication.

Laminated magnetoelectric (ME) composites consisting of magnetostrictive and piezoelectric materials have been investigated and proved to realize strong ME coupling, which shows great benefits to fabricate high sensitivity ME magnetic sensors. In this work, optimized L – T mode ME composites consisting of heat-treated Metglas ribbons and [110]-oriented Mn-doped 0.71Pb(Mg _1/3 Nb _2/3 )O ₃ –0.29PbTiO ₃ (Mn-doped PMN-PT) single crystal fibers were reported, which achieves giant ME coupling and ultrahigh ME electric field coefficient of 4.26 × 10 ⁴ V cm ⁻¹ Oe ⁻¹ at the electromechanical resonance. The equivalent magnetic noise of the ME sensor based on the proposed ME composites is only 2.89 fT Hz ^−1/2 at the electromechanical resonance, which exhibits great prospect in the application of precision magnetic field detection. Based on the characterization of heat-treated Metglas samples and the finite element simulation of the ME composites, the improved performance of the ME composites and ME sensors can be attributed to the enhanced properties of heat-treated Metglas (higher piezomagnetic coefficient d _33,m , higher induced magnetic flux density and lower mechanical loss) due to the enhancement of nanocrystallization and the stronger magnetic flux concentration effect corresponding to the dimension of the Metglas ribbons.