Single dc magnetic field tunable electromechanical resonance in Terfenol-D/PZT/Terfenol-D trilayer composites

摘要

Single dc magnetic field excited electromechanical resonance (EMR) in Terfenol-D/PZT/Terfenol-D trilayer composites structure was experimentally investigated and theoretically analyzed. The experiment proves dc magnetic field influence on EMR of magnetoelectric (ME) composites. The tuning of approximately 17.7 kHz was obtained in a dc magnetic field of 100 mT. The theory of dc magnetic field tunable resonance frequency shift containing different ferroelectric volume fractions in layer magneto-electric composites is presented. This tuning is due to the magnetoelectric interactions in the layered ME composites structure.