Structure, optical and magnetic behavior of nanocrystalline CuO nanopowders synthesized via a new technique using Schiff base complex

New Cu(II) Schiff base complex [Cu(L)(H 2 O)Cl] have been synthesized using the sonochemical route. Then, nanocrystaline monoclinic copper oxide CuO phase were obtained from the complex by annealing the formed Cu(II) Schiff base complex at 600 °C for 2 h. The crystallite size of the formed CuO was 51.5 nm. The formed CuO sample was appeared as cubic-like structure. Besides, the band gap energy of the CuO nanoparticles was 1.39 eV. Meanwhile, the photoluminescence emission spectra measurement ( PL ) at different excitation bands were evinced that CuO exhibited luminescence band around at 403 nm. Indeed, the saturation magnetization ( Ms ) was 0.17 μ/g whereas the coercivity ( Hc ) was 233.5 Oe, indicating the weak ferromagnetic behavior of the formed CuO powders was observed. Consequently, in this paper we illustrates that the organic–inorganic compounds may be suitable precursors for synthesis of nano-scale materials. The sonochemistry method may have some advantages such as: it takes place with shorter reaction times and produces better yield.