Sustitución de calcio en el sistema de perovskita del titanato de bismuto

In this work we present preliminary results on the study of the ceramic system, described here by the proposed formula Ca_nBi₄Ti_3+nO_12+3n, where 0.25 < n < 2.10. We synthesised this series of compounds by solid state reaction method. The technique used for characterisation were DTA, DSC, TG, X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). It was found that reaction temperature of these compounds is 889°C. We obtained a single phase in the range of 1.00 < n < 2.10, the identified structure by XRD is isostructural to SrBi₄Ti₄O₁₅ compound, which has an orthorhombic structure [1]. Well formed grained structure is exhibited by electron microscope photographs.