The ceramics powders were obtained using the Pechini method. Ethylene-glycol Mallinckrodt 99.5% was heated at 70°C and citric acid added Mallinckrodt 99% to obtain a 4:1 ratio between the compounds; it was necessary to ensure complete dissolution of citric acid. The system was cooled to room temperature.
Para obtener el polvo cerámico por el método Pechini, inicialmente se calentó etilenglicol Mallinckrodt 99,5% a 70 °C y se adicionó ácido cítrico Mallinckrodt 99% en una proporción 4:1; garantizada la completa disolución del ácido cítrico, el sistema se llevó a temperatura ambiente.