Piezoelectric properties enhanced of Sr0.6(BiNa)0.2Bi2Nb2O9 ceramic by (LiCe) modification with charge neutrality

Aurivillius-type ceramics, Sr0.6−x(LiCe)x/2.5(BiNa)0.2Bi2Nb2O9(SLCBNBNO) with the charge neutrality, were synthesized by using conventional solid-state processing. Phase analysis was performed by X-ray diffraction analyses (XRD) and Raman spectroscopy. Microstructural morphology was assessed by the scanning electron microscopy (SEM). Structural, dielectric, piezoelectric, ferroelectric, and electromechanical properties of the SLCBNBNO ceramics were investigated. Piezoelectric properties were significantly enhanced compared to Sr0.6(BiNa)0.2Bi2Nb2O9 (SBNBN) ceramic and the maximum of piezoelectric coefficient d33 of the SBNBN-LC6 ceramic was 32 pC/N with higher Curie temperature (Tc ∼590 °C). In addition, mechanisms for the piezoelectric properties enhanced of the SBNBN-based ceramics were discussed.