This study deals with the changes in the electrical and optical properties of Sm₂Ti₂O₇ due to the substitution of 25 wt% of Zr with Ti. Nanocrystalline Sm₂Ti₂O₇ and Sm₂Ti_1.5Zr_0.5O₇, with cubic pyrochlore structure, are prepared through the modified combustion technique. X-ray diffraction (XRD) is used to find the structure and confirmed using vibrational spectroscopic tools. The particle size obtained for Sm₂Ti₂O₇ using the transmission electron microscopic technique (TEM) is 12.74 nm. The band gap energy values of Sm₂Ti₂O₇ are 3.33 eV and for Sm₂Ti_1.5Zr_0.5O₇ it is 3.47 eV. The photoluminescence (PL) spectroscopic studies give emission around 569 nm. The average grain size obtained using scanning electron microscopy (SEM) is 0.13 μm and 0.27 μm for Sm₂Ti₂O₇ and Sm₂Ti_1.5Zr_0.5O₇, respectively. The conductivity is increased with temperature and high conductivity of 2.27 × 10⁻² S/m is obtained for Sm₂Ti₂O₇. These materials are found suitable for optical and solid oxide fuel cell applications.

这项研究解决了由于25％（重量）的Zr被Ti取代而引起的Sm ₂ Ti ₂ O ₇的电学和光学性质的变化。通过改进的燃烧技术制备了具有立方烧绿石结构的纳米晶Sm ₂ Ti ₂ O ₇和Sm ₂ Ti _1.5 Zr _0.5 O ₇。X射线衍射（XRD）用于查找结构，并使用振动光谱仪进行确认。Sm ₂ Ti ₂ O ₇的粒径使用透射电子显微镜技术（TEM）为12.74 nm。Sm ₂ Ti ₂ O ₇的带隙能量值为3.33 eV，Sm ₂ Ti _1.5 Zr _0.5 O ₇的带隙能量值为3.47 eV。光致发光（PL）光谱研究给出了大约569 nm的发射。对于Sm ₂ Ti ₂ O ₇和Sm ₂ Ti _1.5 Zr _0.5 O ₇，使用扫描电子显微镜（SEM）获得的平均晶粒尺寸分别为0.13μm和0.27μm 。电导率随温度的升高而增加，高电导率为2.27×10 ^-2 对于Sm ₂ Ti ₂ O ₇获得S / m 。发现这些材料适用于光学和固体氧化物燃料电池应用。