Mechanical loss and magnetoelectric response in magnetostrictive/interdigitated-electrode/piezoelectric laminated resonators

Abstract

The mechanical quality factor and the resonant magnetoelectric (ME) response of multi-push-pull mode Metglas/interdigitated (ID)-electrode/Pb(Zr,Ti)O3 (PZT) ME resonators have been studied as a function of ID-electrode geometry for both sandwich and bimorph configurations. The results show that the mechanical quality factor of the PZT core composite and the effective mechanical quality factor of the ME resonator are increased with increasing ID-electrode spacing. The sandwich resonator was found to exhibit a higher effective mechanical quality factor than the bimorph one.

Significant improving magnetoelectric sensors performance based on optimized magnetoelectric composites via heat treatment

“…where n is the volume fraction of the piezomagnetic phase, d 33,m and d 31,p are the piezomagnetic coefficient of piezomagnetic phase and the piezoelectric coefficient of piezoelectric phase, ε T 33 and k 31,p are the free dielectric constant and the electromechanical coupling coefficient of piezoelectric phase, s E 11 and s H 33 are the elastic compliances of the piezoelectric and piezomagnetic phases, respectively. The mechanical quality factor of the ME composites Q m is related to the mechanical quality factor of piezoelectric phase (Q piezo m ) and piezomagnetic phase (Q mag m ), which can be expressed as [34].…”