Room temperature Mössbauer characterization of ferrite with spinel structure

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Cobalt ferrite (CoFe2O4) nanoparticle were obtained by different synthesis methods: coprecipitation (CO), ultrasonically assisted coprecipitation (US-CO), coprecipitation followed by mechanochemical treatment (MC-CO), microemulsion (ME) and microwave assisted hydrothermal synthesis (MW-HT). The structure and cation distribution are investigated by XRD diffraction analysis and Raman spectroscopy. The parameters such as chemical shift, quadruple splitting and hyperfine field and site occupancy of Fe3+ were determined by M?ssbauer spectroscopy. The 57Fe-M?ssbauer spectr? of the CoFe2O4 w?r? measured at room temperature in ? 12 mm s-1 Doppler velocity range. The 57Fe-M?ssbauer spectr? of the CoFe2O4 samples w?r? fitted with the extended Voigt-based fitting method.