Study of dielectric and magnetic properties of bismuth lanthanum titanium oxide synthesized by semi wet route
Pooja Gautam, Arvind Kumar Bharti
Bismuth lanthanum titanate, Bi3LaTi3O12 (BLTO) ceramic was fabricated semi-wet route. The single phase formation of BLTO was confirmed by X-ray diffraction pattern. The complexation of citric acid with oxygen metal bond was found out by FT-IR studies in the calcined powder at 800 °C for 6 h. Transmission electron microscope (TEM) analysis is used to determine the particle size in the range of 212 ± 20 nm. The average grain size obtained from scanning electron microscope (SEM) and atomic-force microscope (AFM) was almost have the similar values 200 ± 20 nm and 217±20 nm. The surface roughness and root means square roughness was found to be 46.015 and 58.661 nm, from the AFM analysis. Magnetic properties of ceramic show the magnetic transition of anti-ferromagnetic to ferromagnetic nature in the M-H and M-T curve. The blocking temperature and Neel’s temperature was found to be 155 K and 51 K respectively. The dielectric constant (ε') value of Bi3LaTi3O12 ceramic was found to be 403 at 100 Hz at 500 K.