(1-x)(K_0.44Na_0.52Li_0.04)(Nb_0.91Ta_0.05Sb_0.04)O₃-xSmAlO₃ (abbreviated as KNLNTS-xSA) (x = 0.000, 0.001, 0.004 and 0.008) lead-free ceramics were prepared by conventional solid-state sintering method and the effects of SA on the phase structure and electrical properties of the ceramics were systematically studied. The XRD analysis results show that all compositions had a pure perovskite structure at the optimum sintering temperature. Enhanced electrical properties were obtained with x = 0.004: d₃₃ = 144 pC/N, ε_r = 970, T_C = 323 °C, T_O-T = 71 °C, P_r = 16 μC/cm², and E_C = 14.9 kV/cm at the sintering temperature of 1180 °C, providing a better method to obtain high-performance potassium-sodium-niobate materials.

（1- x）（K _0.44 Na _0.52 Li _0.04）（Nb _0.91 Ta _0.05 Sb _0.04）O ₃ - x SmAlO ₃（缩写为KNLNTS- x SA）（x  = 0.000、0.001、0.004和0.008）无铅陶瓷采用常规的固态烧结法制备了表面活性剂，系统研究了表面活性剂对陶瓷相结构和电性能的影响。XRD分析结果表明，所有组成在最佳烧结温度下均具有纯钙钛矿结构。x  = 0.004可获得增强的电性能：d ₃₃  = 144 PC / N，ε _{- [R}  = 970，Ť _Ç  = 323℃，Ť _{O- Ť}  = 71℃，P _[R  = 16μC/厘米²，和ë _Ç  = 14.9千伏/厘米在烧结温度下1180°C的温度，为获得高性能铌酸钾钠材料提供了更好的方法。