(Ba0.85Ca0.15)(Ti0.9Zr0.1)O3 + 0.04 wt% CeO2 lead-free ceramics were synthesized by conventional sintering process and the effect of calcination temperature on microstructure, dielectric and piezoelectric properties were investigated. Improved piezoelectric properties have been observed at 1,125℃ calcination temperature which show the optimal electrical properties, kp∼0.457, d33∼367 pC/N, Qm∼158 and Tc∼85℃. These results show that the piezoelectric properties can be improved by appropriate calcination temperature.

Citations

• On the correlation between mechanical and electrical properties of pure and Ag doped ZnO nanoparticles
  Mansour Mohamed, Yasser A. M. Ismail, M. Bouzidi, Z. R. Khan, A. Sedky
  Scientific Reports.2026;[Epub]     CrossRef

In this paper, the 0.95(Na_0.5K_0.5)_0.04[(Nb_0.8Ta_0,20)_0.994Co_0.015]O_3(abbreviated as NKNT) + 0.05KNbO_3 lead-free piezoelectric ceramics were synthesized by the conventional mixed oxide method route with normal sintering. And also, the effects of calcination temperature on the microstructure, dielectric properties, and piezoelectric properties were investigated. A polymorphic phase transition(PPT) between orthorhombic and tetragonal phases was observed in specimens calcined at 810℃∼850℃. The ceramics calcined at 830℃ showed excellent piezoelectric properties: d_33= 179 pC/N, k_p= 0.384, Q_m= 79.73). These results indicate that the ceramic is a promising candidate material for lead-free piezoelectric ceramics.