Characterization of cobalt ferrite nanoparticles obtained by various synthesis methods and comparison with the Raman spectra of other ferrites and some cubic oxide spinels

Single phase cobalt ferrite (CoFe2O4) with nanoparticles of similar sizes (15.7-19 nm) was obtained by different synthesis methods: coprecipitation, ultrasonically assisted coprecipitation followed mechanochemical treatment, microemulsion and microwave hydrothermal synthesis. The CoFe2O4 samples have been studied using a variety characterization techniques: X-ray diffraction (XRD), Raman spectroscopy, far infrared (FIR) reflectivity attenuated total reflectance (ATR) in combination Fourier-transform (FTIR) spectroscopy mid IR spectra. Different methods produced lattice constants, internal stresses cation inversion values. This is confirmed the subtle changes spectra nano-powders. were compared other ferrites some cubic oxide spinels an attempt to evaluate contribution tetrahedral octahedral oscillations certain modes.