Evaluation of structural, optical, dielectric, electrical, and magnetic properties of Ce3+ doped Cu0.5Cd0.25Co0.25Fe2-xO4 spinel nano-ferrites

Rare earth cerium (Ce3+) doped Cu0.5Cd0.25Co0.25CexFe2-x O-4 (x = 0, 0.0125, 0.025, 0.0375, 0.05) spinel ferrites nanoparticles were synthesized via co-precipitation technique. XRD, FT-IR, UV-VIS, VSM, LCR and current-voltage measurement techniques were utilized to investigate the structural parameters, metal stretching vibrations, indirect energy band gap, magnetic parameters and electrical behavior of synthesized ferrite powders respectively. The XRD patterns confirmed the remarkable reduction in crystallites size, cell volume and lattice constant while both densities (rho(x) , rho(bulk)) tends to increase with rise in Ce(3+)contents(x). The indirect energy band gaps (E-g) and the DC electrical resistivities were found in decreasing order from 3.48 to 2.50 eV and 9.902 x 10(7) to 0.142 x 10(7)(ohm-cm) respectively at room temperature (303 K) with Ce3+ doping concentration. LCR meter inveterate that the dielectric constant had declining, and ac conductivity had growing trend at fix value of cerium concentration with rise of frequency from 8 Hz to 8 MHz. The soft magnetic properties can be significantly improved by the small amount of Ce3+ ion doping (x = 0.0375) with an increase of the saturation magnetization (Ms), and retentivity (Mr).

Automated summary

The study revealed that with increasing Ce3+ doping concentration, the size of synthesized ferrite crystals, resistivity, and magnetic properties all undergo changes. Ce3+ doping also has an impact on the dielectric constant and AC conductivity of the ferrites.