Magnetoelectric effect in a parallel sandwich of magnetostrictive pseudo-1–3 composite and piezoelectric 2–2 composite

Abstract A two-phase magnetoelectric (ME) parallel sandwich was developed by bonding two longitudinally magnetized Terfenol-D/epoxy pseudo-1–3 magnetostrictive composite plates on two longitudinally polarized PZT/epoxy 2–2 piezoelectric composite plates combined longitudinally as a single plate and with their polarization directions arranged in reverse directions. A significantly large ME voltage sensitivity (MEV) of 3.1 V/Oe was observed at the resonance frequency of 42.8 kHz under a relatively low bias field of 0.8 kOe. This resonance MEV was ∼35 times larger than its nonresonance values, showing great promise of using the proposed sandwich in ME conversion devices.