This study aims to improve the magnetic and dielectric properties of Ni–Mg ferrites by incorporating cadmium. Ni_0.6−xCd_xMg_0.4Fe₂O₄ crystals were synthesized using the sol–gel method, with doping ratios (x) ranging from 0.00 to 0.40. XRD analysis confirmed the primary cubic phase formation (space group Fd\(\overline{3}\)m), with Ni_0.6−xCd_xMg_0.4Fe₂O₄ crystallite sizes ranging from 34 to 23 nm. Cationic distribution analysis revealed slight changes in ionic radii angles due to doping, influenced by the difference between Ni (0.69 Å) and Cd (0.95 Å) radii. Cd²⁺ concentration significantly impacted lattice constant, density and dislocation density. Increasing Cd concentration increased saturation magnetization in VSM measurements, while coercivity and remnant magnetization decreased.

本研究旨在通过掺入镉来改善镍镁铁氧体的磁性和介电性能。采用溶胶-凝胶法合成了Ni _0.6−x Cd _x Mg _0.4 Fe ₂ O ₄晶体，掺杂比(x)范围为0.00至0.40。 XRD 分析证实了初生立方相的形成（空间群 Fd \(\overline{3}\) m），其中 Ni _0.6−x Cd _x Mg _0.4 Fe ₂ O ₄微晶尺寸范围为 34 至 23 nm。阳离子分布分析显示，由于掺杂，离子半径角略有变化，受到 Ni (0.69 Å) 和 Cd (0.95 Å) 半径差异的影响。 Cd ²⁺浓度显着影响晶格常数、密度和位错密度。增加 Cd 浓度会增加 VSM 测量中的饱和磁化强度，而矫顽力和残余磁化强度会降低。