The 0.94NKN–0.03LS–0.03LT ceramics exhibit excellent integral electrical properties, in which
the value of piezoelectric constant d33 is 228 pC/N, the electromechanical coupling factors Kp and Kt are
0.220 and 0.230, respectively, the mechanical quality factor Qm is 32.19, and the remnant polarization Pr
is 23.06C/cm2.