Abstrait

INFLUENCE OF MO6+ ON FTIR AND MOSSBAUER SPECTROSCOPIC PROPERTIES OF COPPER FERRITE

B.V.Rao, A.D.P.Rao, V.Raghavendra Reddy

To understand the impact of Mo6+ on some structural parameters of copper ferrites, it was substituted in the chemical compositional formulae Cu 1.0-3y Fe 2.0-2x Mo x + y O4.0. Spectra of FTIR and Mössbauer were recorded at room temperature. These are found to show three principal bands of absorption in the range of lower x or y values and started to show a shoulder or split at higher values of x and or y values in the FTIR studies. Based on the Mössbauer spectra, Magnetic hyperfine field, Isomer shift and Line width values are evaluated. Thus generalized chemical compositional formula has been proposed for cation distribution in the Mössbauer studies. The obtained results and evaluated values are interpreted on the basis of different possible mechanisms