Complete sets of elastic, dielectric and piezoelectric properties of [001]-poled rhombohedral Pb(Zn1/3Nb2/3)O3-(4.5-7)%PbTiO3 single crystals.

Complete sets of elastic, dielectric and piezoelectric properties of flux grown rhombohedral Pb(Zn1/3Nb2/3)O3-xPbTiO3 (x = 0.0475, 0.055 and 0.065) single crystals poled along [001] crystal direction have been determined in the present work. Their phase transformation temperatures, coercive fields and mechanical quality factors are also provided. The results show that [001]-poled rhombohedral PZN-PT single crystals exhibit superior longitudinal piezoelectric properties (k33 ≥ 0.90, d33 ≈ 1580-2500 pC/N). While the piezoelectric properties increase with PT content, the TRT and hence temperature stability of the crystal degrade accordingly. These unique properties, together with the property matrices provided in this work, can be used advantageously to design high-performance piezoelectric devices of longitudinal activation / sensing mode to suit various application needs.