Abstract
Cu-doped Co–Zn nanoferrites Co0.5CuxZn0.5 − xFe2O4 (x = 0.0, 0.2 and 0.4) were synthesized by sol-gel auto-combustion. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) with EDS, Fourier transform infrared (FTIR) spectroscopy, vibrating sample magnetometry (VSM), and two-probe methods were employed to study the structural, morphological, magnetic and DC electrical resistivity properties, respectively, of the prepared samples. Monotonically decreasing values of the lattice constants with the dopant concentrations were calculated. The crystallite sizes were also recorded in a decreasing pattern. The stretching bond vibrations measured by room temperature FT-IR showed characteristic absorptions in the range of 579.634–393.49 cm − 1. The magnetic parameters were observed to have a tuned value, although decreasing in a non-monotonic pattern. A higher value of the DC resistivity value was recorded for x = 0.2 concentration of the dopant, indicating the optimal concentration for synthesizing materials applicable in high-frequency microwave devices.
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