The effect of the firing conditions on the phase formation, microstructure, and electrical properties of (K_0.5Na_0.5)(Nb_0.7Ta_0.3)O₃ (KNNT) ceramics synthesized by the solid-state combustion technique using glycine as fuel has been investigated. All samples were calcined at 600°C to 800°C for 2 h and sintered at 1150°C to 1190°C for 2 h to 5 h. Pure KNNT powders were produced after calcination at 600°C for 2 h. The average particle size increased when the calcination temperature was increased. The KNNT powder calcined at 600°C for 2 h showed rather square morphology with average particle size of ∼ 160 nm. The x-ray diffraction (XRD) analysis results for the ceramics revealed the presence of orthorhombic (O) and tetragonal (T) phases in all samples. When sintering at 1150°C for 4 h, the O:T ratio was 50:50, as verified by the Rietveld refinement technique. The average grain size, density values, and dielectric properties tended to increase when the dwell time was increased from 2 h to 4 h, but then degraded. The KNNT ceramic produced at the optimum firing condition (1150°C for 4 h) showed good crystalline morphology, the highest density (ρ = 5.28 g/cm³), the highest dielectric constant (ε_C = 5002), and good ferroelectric behavior (P_r = 18.50 μC/cm² and E_c = 9.04 kV/cm).

烧成条件对（K _0.5 Na _0.5）（Nb _0.7 Ta _0.3）O ₃的相形成，微观结构和电性能的影响研究了使用甘氨酸作为燃料通过固态燃烧技术合成的（KNNT）陶瓷。将所有样品在600℃至800℃下煅烧2小时，并在1150℃至1190℃下烧结2小时至5小时。在600°C煅烧2小时后，生成纯KNNT粉末。当煅烧温度增加时，平均粒径增加。在600°C下煅烧2 h的KNNT粉末显示出相当正方形的形态，平均粒径约为160 nm。陶瓷的X射线衍射（XRD）分析结果表明，所有样品中均存在斜方（O）和四方（T）相。通过Rietveld精炼技术验证，当在1150°C烧结4小时时，O：T比为50:50。平均晶粒度，密度值，保压时间从2 h增加到4 h后，介电性能趋于提高，但随后下降。在最佳焙烧条件（1150°C，持续4 h）下生产的KNNT陶瓷表现出良好的晶体形态，最高的密度（ρ  = 5.28Hz克/厘米³），最高介电常数（ε _{C ^}  = 5002），和良好的铁电特性（P _{- [R}  = 18.50  μ C /厘米²和ë _ç  = 9.04千伏/厘米）。