Spectroscopy, Optical Properties of NiFe2O4 Nanoparticles Prepared by Co-Sputtering Technique in Different Gasses Mixture Ratio

Baha T. Chiad, Ruaa A. Mohammed

We report the optical properties of the inverse spinel ferrite NiFe2O4,All the films were deposited on Si (100) substrateby co-sputtering technique, We carried out variable gasses mixture argon to oxygen for  transmittance measurements on the thin films to investigate the optical properties. Thicknesses of the films determined by x-ray reflectivity vary from 73nm  to 176nm as the varies of gas mixture  from 30:70 to 10:90 (Ar:O2) respectively . The films were characterized by Fourier transform infrared (FTIR)  , Optical properties were studied by UV-vis reflectance spectra. The value of optical  indirectband gap  ranging between  (1.779-1.785ev  ) was found to be independent of thickness of the film. The absorption spectra of  NiFe2O4nanoparticles  for the prepared sample in the spectral uv- visible region 400-700 was obtained.