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Ceramic materials with a perovskite-like structure such as barium titanate either undoped or doping have been of great interest thanks to its various electrical applications, including dielectric capacitors, resistors thermal sensors, multilayer capacitors and others. The characteristics of this type of materials are determined by their microstructure and chemical composition, these variables are determined by the synthesis process, the quality of the precursor materials and the addition of dopants. The objetive of this work is the synthesis of solid solutions of the type Ba1-3XGd2XTi1-3XEu4XO3, using high purity precursors at concentrations of x equal to 0.1%, 0.15%, 0.3% and 0.6% in (wt. %), in order to obtain a ferroelectric phase doped with GGGG33+ and EEEE33+. Power mixes were sintered at 1300 °C for 6 hours. Microestructural evolution was characterized by X ray diffraction and scanning electron microscopy. The results showed evidence of the structural evolutions of a ferroelectric phase (tetragonal) in all the compositions.

Obtención de fase ferroeléctrica en cerámicos base BaTiO3 doblemente dopados con tierras raras