Abstract Rare earth cerium (Ce3+) doped Cu0.5Cd0.25Co0.25CexFe2-x O4 (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 ( ρ x , ρ b u l k ) tends to increase with rise in Ce3+contents(x). The indirect energy band gaps (Eg) and the DC electrical resistivities were found in decreasing order from 3.48 to 2.50 eV and 9.902 × 107 to 0.142 × 107(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).

中文翻译：

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Ce3+ 掺杂的 Cu0.5Cd0.25Co0.25Fe2-xO4 尖晶石纳米铁氧体的结构、光学、介电、电学和磁学性能评估

摘要 采用共沉淀法合成了稀土铈(Ce3+)掺杂Cu0.5Cd0.25Co0.25CexFe2-x O4 (x = 0, 0.0125, 0.025, 0.0375, 0.05)尖晶石铁氧体纳米颗粒。利用XRD、FT-IR、UV-VIS、VSM、LCR和电流-电压测量技术分别研究了合成铁氧体粉末的结构参数、金属伸缩振动、间接能带隙、磁参数和电学行为。XRD 图案证实了微晶尺寸、晶胞体积和晶格常数的显着降低，而两种密度（ρ x 、ρ 体积）都随着 Ce3+ 含量（x）的增加而增加。发现间接能带隙（Eg）和直流电阻率从 3.48 到 2.50 eV 和 9.902 × 107 到 0 依次递减。142 × 107(ohm-cm) 在室温 (303 K) 下，Ce3+ 掺杂浓度。LCR 表表明，随着频率从 8 Hz 上升到 8 MHz，介电常数下降，交流电导率在铈浓度固定值下有增长趋势。随着饱和磁化强度 (Ms) 和保持率 (Mr) 的增加，少量 Ce3+ 离子掺杂 (x = 0.0375) 可以显着改善软磁性能。