Estimation of cation distribution in spinel ferrites Co1+xFe2-xO4 (0.0 <= x <= 2.0) using the magnetic moments measured at 10 K

Abstract Ferrite samples with the composition Co 1+ x Fe 2− x O 4 (0.0 ⩽  x  ⩽ 2.0) were prepared by chemical co-precipitation. The samples exhibited an (A)[B] 2 O 4 single phase cubic spinel structure. Magnetic measurements indicated that the saturation moment M of the samples at 10 K decreased from a maximum of 3.16 μ B /formula for x  = 0.0 to a minimum of 0.0 μ B /formula for x  = 2.0, with a local minimum at x  = 1.4. The cation distribution of the samples was estimated by fitting dependence of M on x at 10 K. The Co ions content at the (A) sites estimated by us are close to the corresponding experimental results reported by Ferreira using Mossbauer spectrum.