The component of Bi3.6La0.4Ti3O12 was prepared by hybrid process (sol-gel hydrothermal) at low temperature 400 °C. Bismuth acetate, lanthanum acetate and titanium isopropoxide were used as metallic source. By X-ray diffraction, the Bi3.6La0.4Ti3O12 ceramic has single Bi4Ti3O12 phase of Aurivillius type. The assignment of the infrared transmittance bands, especially in the region 400– 1000 cm-2. Dielectric properties of the obtained material at different frequencies 100 Hz, 1 kHz and 10 kHz as a function of temperature were investigated.
The various Aurivillius oxides, SrBi2-xLaxNb2O9 (x=0, 0.5), were synthesized by using the conventional solider state reaction method. Phase analyses were performed by X-ray diffraction (XRD) analyses and Raman spectroscopy. Microstructural morphology was investigated by scanning electron microscopy (SEM). The Curie temperature, maximum permittivity and activation energy decrease with the increase in La content.