Complete set of elastic, dielectric, and piezoelectric constants of [011]C poled rhombohedral Pb(In0.5Nb0.5)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3: Mn single crystals

Mn modified rhombohedral Pb(In0.5Nb0.5)O-3-Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PIN-PMN-PT:Mn) single crystals poled along [011](C) crystallographic direction exhibit a "2R" engineered domain configuration, with macroscopic mm2 symmetry. The complete sets of material constants were determined using combined resonance and ultrasonic methods, and compared to [001](C) poled PIN-PMN-PT: Mn crystals. The thickness shear piezoelectric coefficient d(15) and electromechanical coupling factor k(15) were found to be on the order of similar to 3000 pC/N and 0.92, respectively, with longitudinal piezoelectric coefficient d(33) and coupling factor k(33) being on the order of similar to 1050 pC/N and 0.90. Of particular importance is that PIN-PMN-PT:Mn single crystals exhibited high mechanical quality factor Q(33) similar to 1000, comparable to "hard" PZT8 ceramics, which can also be confirmed by the low extrinsic contribution, being <= 2% from the Rayleigh analysis. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4792661]