Synthesis, analysis and characterization of Co substituted NiZnTi spinel ferrite

Co-substituted NiZnTi spinel ferrite nanopowders Ni(0.6-x)Zna(0.4)CO(x)Ti(0.1)Fe(1.9)O(4) (0.00 <= x <= 0.25) were prepared by the solid-state reaction method. The effects of Co-replaced NiZnTi ferrite powders on the structural and magnetic properties have been studied. The average crystal size and lattice parameters increase with increasing of Co replacements as shown in X-ray diffraction patterns. Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) measurements were used to depict structural, physical and magnetic properties. The saturation magnetization (M-s) firstly improves with Co concentration x <= 0.20 and then decreases for x > 0.20, and the coercivity (H-c) exhibits the same behavior along with the various substituted content. Meanwhile, the real permeability mu' is obviously improved with the increase of Co substitution, which reaches the maximum value when x = 0.05. (C) 2020 Elsevier B.V. All rights reserved.