Structural, optical and magnetic properties of the Fe2TiO5nanopowders

Iron titanate nanopowders with a particle size range of 48–70 nm could be obtained after calcinations of the dried gel at 900°C for 2 h. Fe2TiO5 indicates a ferrimagnetic–paramagnetic behaviour, as evidenced by using vibrating sample magnetometer at room temperature. In the temperature range of 25–300°C the empirical equation of the heat capacity C p (J/mol K) = −692.328 + 1.39 T + 3.757 × 107/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 1.95 eV.