A new magnetoelectric resonance mode in bilayer structure composite of PZT layer and Terfenol-D/epoxy layer

Magnetoelectric (ME) composites with a bilayer structure were prepared by easily combining Pb(Zr,Ti)O-3 layer and Terfenol-D/epoxy layer. A new second flexural ME resonance mode was investigated and confirmed by vibration modal analysis. A giant ME coefficient at the first flexural resonance mode (2.79 V/cmOe at 35 kHz) is much larger than that at the transverse resonance mode (1.31 V/cmOe at 122 kHz). A flat ME response of about 360 mV/cmOe occurs in the range from 50 to 80 kHz, which shows a large bandwidth. This bilayer structure is expected to achieve a giant ME effect at relatively low frequency.