Zr–Ni substituted barium hexaferrites with chemical compositions Ba₂Co₂Fe_28-2xZr_xNi_xO₄₆ (x = 0.0, 0.25, 0.50, 0.75, 1.0) are fabricated through sol–gel autocombustion approach. The composites characteristics before and after substitution are examined through X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), vibrating sample magnetometery (VSM) and dielectric measurements techniques. The XRD spectrum confirmed the formation of single phase X-type ferrites with crystallinity lying in the range of 24.57–29.11 nm. FTIR results revealed the specific absorption bands in the range of 300–900 cm⁻¹. SEM micrographs demonstrate platelet shape grains along some agglomeration. The M–H loops analysis deduce about saturation magnetization (M_s), retentivity (M_r), coercivity (H_c) and squareness ratio (M_r/M_s), and these results show ferrimagnetic nature of prepared particles. The magnetic dilution in magnetic moment of molecules cause reduction in M_r and M_s. Reduction in coercivity is related to magnetocrystalline anisotropy. After Zr–Ni substitution, a significant decrease is observed in remanance, saturation magnetization and coercivity. The dielectric parameters are determined in 20 Hz–1 MHz frequency range. The dielectric parameters are studied on the basis of frequency change. The behavior of dielectric parameters analyzed on the basis of Wagner and Koop’s phenomenological theory.

具有化学成分Ba ₂ Co ₂ Fe _{28-2 x} Zr _x Ni _x O ₄₆（x的Zr-Ni取代的六价钡铁氧体 = 0.0、0.25、0.50、0.75、1.0）是通过溶胶-凝胶自燃方法制造的。通过X射线衍射（XRD），傅立叶变换红外光谱（FTIR），扫描电子显微镜（SEM），振动样品磁强（VSM）和介电测量技术来检查置换前后的复合材料特性。XRD光谱证实了单相X型铁氧体的形成，其结晶度在24.57–29.11 nm范围内。FTIR结果显示在300–900 cm ^-1范围内的特定吸收带。SEM显微照片显示出沿一些团聚的血小板形状的晶粒。的中号- ħ循环分析推导出饱和磁化强度（中号_小号），保持性（M _r），矫顽力（H _c）和矩形比（M _r / M _s），这些结果表明了所制备颗粒的亚铁磁性。分子磁矩的磁性稀释导致M _r和M _s降低。矫顽力的降低与磁晶各向异性有关。Zr-Ni替代后，剩磁，饱和磁化强度和矫顽力均显着下降。介电参数在20 Hz–1 MHz频率范围内确定。在频率变化的基础上研究介电参数。介电参数的行为基于瓦格纳和库普的现象学理论进行了分析。