Synthesis of SrTiO3 by the Calcination of SrCO3 and TiO2 Mixtures Intensively Ground by Means of High Energy Milling

A SrTiO 3 electroceramic with perovskite structure was produced by the calcination of a mixture of SrCO 3 and TiO 2 intensively grounded by high energy milling.For this purpose, raw materials were mixed in stoichiometric amounts in a planetary type mill; the obtained powder mixture was calcined for 2 h at temperatures between 800 and 1300°C.Samples resulting from the calcination were characterized by XRD, FTIR, SEM analysis and electrical measurements.From XRD, it was determined that the SrTiO 3 formed presents the cubic structure of perovskite.The complete reaction for SrTiO 3 compound formation occurs at 1200°C.Micrograph observations indicate the presence of a homogeneous microstructure with tiny grain size.The measured values of electrical resistivity were within the typical range of insulating materials.