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

• Magnetically excited EMR in trilayer composites structure was studied.
• The EMR frequency shift is approximately 17.7 kHz with dc magnetic field of 100 mT.
• Calculation of capacitance as a function of frequency under different magnetic fields.
• Dependence of ferroelectric volume fraction on EMR shifts have been revealed.
• Promise for control EMR with a dc magnetic field is suggested.

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 magnetoelectric composites is presented. This tuning is due to the magnetoelectric interactions in the layered ME composites structure.