Textured Mn-doped PIN-PMN-PT Ceramics: Harnessing Intrinsic Piezoelectricity for High-power Transducer Applications

Mn-doped PIN-PMN-PT ceramics were 90% [001]_C textured by reactive templated grain growth (RTGG) with 5 vol% BaTiO₃ microplatelets. Hardened properties such as high coercive field (E_C) of 14 kV/cm, low dielectric loss (tan δ) of 0.37-0.66%, and high Q_M of 496 were obtained. Textured Mn-doped ceramics have T_C of 219 °C, and a two times greater low-field d₃₃* of 846 pm/V than random ceramics. Rayleigh analysis of textured PIN-PMN-PT ceramics shows that Mn-doping reduces the relative extrinsic contribution of the piezoelectric response to the strain behavior from 38% to 18% (at 4 kV/cm) by reducing irreversible domain wall motion. Mn-doping also reduced the overall strain response of PIN-PMN-PT, but crystallographic texturing increased the intrinsic piezoelectric response of the lattice as evidenced by the increase in d₃₃ (Berlincourt) from 283 pC/N in random ceramics to 341 pC/N in textured ceramics. These results demonstrate that textured Mn-doped PIN-PMN-PT ceramics are excellent candidates for high-power transducer applications.