First principles approach and experimental exploration of a new double perovskite phase Sr(In SnSb)O: evaluation of structural, optical, and dielectric properties.

A new double perovskite phase, Sr(SnSbIn)O, was successfully synthesized a solid-state reaction and comprehensively characterized using both experimental and theoretical techniques. Powder X-ray diffraction was used to determine the crystal structure, while scanning electron microscopy (SEM) revealed a high degree of densification and uniform grain distribution across the ceramic. Raman and Fourier-transform infrared (FTIR) absorption spectra of the powder present broad bands predominantly due to different stretching modes of the various SnO , InO and SbO octahedra in the region = 400-800 cm.