In this paper, in order to develop optimum composition ceramics with excellent piezoelectric properties, (Na0.525K0.443Li0.037)(Nb0.823Sb0.08Ta0.037)O3 + 0.3 wt%Bi2O3 + 0.4 wt%Fe2O3 lead-free piezoelectric ceramics were synthesized by conventional soild-state method. The calcination temperature of columbite precursors were fabricated at temperature range from 950℃ to 1,150℃ and sintering aids with low melting point were added to densify these ceramics. Effect of calcination temperature on dielectric and piezoelectric properties of ceramics were investigated. the ceramics with B-site columbite precursors at temperature of 1,100℃ obtained the optimal values of d33=272 [pC/N], kp=0.51, Qm=102, εr=978.
