Polycrystalline ceramics, SrBi₄Ti₄O₁₅ (SBT) and Sr_0.2Na_0.4Nd_0.4Bi₄Ti₄O₁₅ (SNBT), were synthesized by solid state sintering method using planetary ball mill. The stoichiometric powders were ground for 10 hours. Single phase formation was established from the XRD results. The highest peak (119) was seen at 30°. X-ray diffraction results indicated decreased cell volume and orthorhombic distortion with the substitution of Na⁺ and Nd³⁺ in place of Sr²⁺. The lattice parameters were measured using Unitcell software. Grain size as well as grains random orientation was observed from scanning electron microscope results. Dielectric properties were measured using Novo control dielectric analyzer, from room temperature to 1200 °C at frequencies 1 kHz, 10 kHz, 50 kHz, 100 kHz, 500 kHz, and 1 MHz. The dielectric constant and loss decreased whereas the Curie temperature increased when Na⁺ and Nd³⁺ were substituted to A- site in SBT. This ceramic has enhanced thermal stability thus making this ceramic appropriate for sensor applications at high temperatures.

采用行星式球磨机通过固态烧结法合成了SrBi ₄ Ti ₄ O ₁₅（SBT）和Sr _0.2 Na _0.4 Nd _0.4 Bi ₄ Ti ₄ O ₁₅（SNBT）。将化学计量的粉末研磨10小时。从XRD结果确定了单相形成。在30°观察到最高峰（119）。X射线衍射结果表明，用Na ⁺和Nd ³⁺代替Sr ^2+可以减少细胞体积和正交畸变。使用Unitcell软件测量晶格参数。从扫描电子显微镜结果观察到晶粒尺寸和晶粒随机取向。使用Novo控制介电分析仪在室温至1200°C，频率为1 kHz，10 kHz，50 kHz，100 kHz，500 kHz和1 MHz的条件下测量介电性能。当Na ⁺和Nd ³⁺取代SBT中的A-位时，介电常数和损耗降低，而居里温度升高。这种陶瓷具有增强的热稳定性，因此使其适合于高温下的传感器应用。