Structural, piezoelectric and ferroelectric analysis of 0.96Bi0.5Na0.5TiO3-0.06BaTiO3: xwt%MnO2 ceramics for high-tech applications

Phase Structure and Electrical Properties of 0.28PIN-0.32PZN–(0.4-x) PT-xPZ Piezoelectric Ceramics

“…Wang et al [11] investigated PIN-PMN-PT ternary polycrystalline ceramics and found that the MPB composition with the best performance was 0.36PIN-0.30PMN-0.34PT, with a dielectric constant (εr) of 2970, a piezoelectric constant (d 33 ) of 450 pC/N, a planar electromechanical coupling coefficient (k p ) of 0.49 and a Curie temperature (T c ) of 245 • C. Wu et al [12] optimized the ternary Pb(In 1/2 Nb 1/2 )O 3 -Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 and obtained a quasi-isotropic phase boundary material component by adjusting the content of PIN, which gave the piezoelectric properties of the material as d 33 = 505 pC/N when the content of PIN was 0.16, but the Curie temperature was only 199 • C. In addition to lead-based piezoelectric ceramics, leadfree piezoelectric ceramics have also been widely studied and achieved good results. The BNT-BT ceramic prepared by Hussain et al [13] achieved the best piezoelectric performance when doped with 0.15 Mn, with d33 at 211 pC/N and Tc at 335 • C. The KNN ceramic studied by Jiang et al [14] not only has a d33 of 340 pC/N, but also has a Curie temperature of 317 • C. Although the performance of some lead-free piezoelectric ceramics can already be comparable to traditional lead-based piezoelectric ceramics, there are still some difficult problems to solve, such as difficulty in sintering, poor repeatability, unstable piezoelectric performance and high cost. Lead-based piezoelectric ceramics have advantages such as low cost, good performance and stable performance.…”