A series of novel lead-free (1-x)(Na_0.5Bi_0.5)TiO₃–xBaSnO₃, (x=0.00, 0.05, 0.10) ceramics were fabricated by solid-state air sintering route and their dielectric and microstructural properties were studied. Various experimental methods to characterize the fabricated ceramics such as PXRD, Raman spectra, SEM-EDS, UV-visible and dielectric studies. All the ceramics were crystallized by rhombohedral symmetry using PXRD and Rietveld profile refinement technique. The experimental atomic charge density distribution studies were performed and the bonding characteristics were analyzed. With increase of BSN content, the average grain size decreased and was characterized by scanning electron microscopy (SEM) technique. Energy dispersive x-ray (EDS) spectra indicate the presence elements and the diffusion of BSN into the rhombohedral phase of NBT matrix. The optical bandgap was determined by UV-Visible spectra and the values are found to be 3.05, 3.10 and 3.12 eV. The temperature dependence of dielectric constant (ε) provides evidence for dielectric anomalous behaviour in the higher doping of BSN concentration.

一系列新型无铅(1-x)(Na _0.5 Bi _0.5 )TiO ₃ –xBaSnO ₃, (x=0.00, 0.05, 0.10) 陶瓷通过固态空气烧结工艺制备，并研究了它们的介电和微观结构特性。表征制造的陶瓷的各种实验方法，例如 PXRD、拉曼光谱、SEM-EDS、紫外可见光和介电研究。所有陶瓷均使用 PXRD 和 Rietveld 轮廓细化技术通过菱面体对称结晶。进行了实验原子电荷密度分布研究并分析了键合特性。随着BSN含量的增加，平均晶粒尺寸减小，并通过扫描电子显微镜（SEM）技术进行表征。能量色散 X 射线 (EDS) 光谱表明存在元素以及 BSN 扩散到 NBT 基质的菱形相中。光学带隙由紫外-可见光谱确定，发现值为 3.05、3.10 和 3.12 eV。介电常数的温度依赖性 (ε ) 提供了 BSN 浓度较高掺杂中介电异常行为的证据。