Influence of Cadmium Substitution on Structural and Mechanical Properties of Co‐Ni Nano Ferrite Synthesized by Co‐Precipitation Method

The objective of this work is to synthesize cadmium doped cobalt nickel ferrite (Co0.5Ni0.5Cd1.5xFe2‐xO4) series with x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5 by co‐precipitation method and analysis of structural properties using X‐ray diffraction (XRD), Fourier‐transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) characterization. The XRD characterization of the samples confirms the cubic spinel structure. Grains in the samples are granular in nature as depicted by SEM images. The FTIR spectra of synthesized ferrites show two strong absorption bands (ν1 and ν2) in the range 400–600 cm‐1 belonging to tetrahedral (A) and octahedral (B) interstitial sites. Williamson Hall and size‐strain plot results show the variation in the grain size with change in doping concentration. Crystallite size D, lattice constant a, micro strain ε, x‐ray density Δx, dislocation density ρD, hopping lengths(LA and LB), bond lengths (A–O and B–O), ionic radii (rA and rB), texture coefficients [TC(hkl)], and mechanical properties are also reported.