Relaxor Ferroelectric Crystals For Medical Ultrasound Transducer Application

摘要

Relaxor-based ferroelectric single crystal Pb(Mg_(1/3)Nb_(2/3))O_3-PbTiO_3(PMN-PT)has drawn much more attention in the ferroelectric field because of its excellent piezoelectric properties near the morphotropic phase boundary(MPB).The piezoelectric constant d33and electromechanical coupling coefficient k33are>1500 pC/N and^0.9,