High-efficiency transducers for acoustic diagnostics on the basis of novel anisotropic piezoelectric materials

A major source of the improvement in acoustic means of technical diagnostics is the use of high-efficiency piezoelectric materials in primary information pickups (transducers). The most optimum relation of characteristics is ensured by a new group of so called anisotropic piezoelectric materials possessing a high anisotropy of piezoelectric properties. The PbTiO/sub 3/-based PCR-70 and PCR-72 piezoceramics developed by our Institute belong to this group; they are characterized by the high K/sub t/, the high piezoelectric response (g/sub 33/>50mV/spl middot/m/N), the very low mechanical quality (Q/sub mt