Structural, optical and magnetic properties of the Fe2TiO5 nanopowders

Iron titanate nanopowders with a particle size range of 48-70nm could be obtained after calcinations of the dried gel at 900 degrees C for 2h. Fe2TiO5 indicates a ferrimagnetic-paramagnetic behaviour, as evidenced by using vibrating sample magnetometer at room temperature. In the temperature range of 25-300 degrees C the empirical equation of the heat capacity C-p (J/molK)=-692.328+1.39T+3.757x10(7)/T-2 for Fe2TiO5 was determined from differential scanning calorimetry. Direct optical band gap of Fe2TiO5 was calculated using the Tauc model by UV-Vis diffuse reflectance spectroscopy. Band gap energy of Fe2TiO5 was determined as 1.95eV.