In this study, rare earth element terbium doped Ni_0.4Cu_0.2Zn_0.4Tb_xFe_2−xO₄ (where X = 0.0 to 0.1 in steps of 0.025) were synthesiesed by citric acid as catalyst via auto-combustion route. The structural, morphological, spectral and magnetic properties are explored and studied in detail. The ferrite samples were characterized by energy dispersive X-ray analysis (EDAX), X-ray diffraction of XRD, field emission scanning electron microscopy, transmission electron microscopy, Fourier transformed Infrared spectroscopy, UV–Vis spectroscopy (UV), Raman spectroscopy and vibrating sample magnetometer techniques. The EDAX analysis authenticates the formation of required stoichiometric ferrite samples. The formation of spinel cubic structure was validated by XRD technique. The lattice constant of all the ferrite was found to be declined with upsurge in Tb³⁺ content. The morphological investigations show that grain size of the ferrites remains in the extent 11–24 nm. The existence of two intrinsic IR absorption band of spinel lattice at υ₁ (561–567) cm⁻¹ and υ₂ (534–542) cm⁻¹ for NiCuZn ferrite system approves the presence of tetrahedral-A and octahedral-B sites over which the cations are distributed in spinel lattice. The UV–Vis measurements suggest that the as prepared and tempered samples at 900 °C of Ni_0.4Cu_0.2Zn_0.4Tb_xFe_2−xO₄ (where X = 0.0 to 0.1 in steps of 0.025) ferrite possess diverse optical properties depending upon the composition of the samples. The Raman fingerprint affirms the spinel structure and variation in the cation distribution in synthesized nanomaterials. The frequency dependent dielectric constant of NiCuZn ferrites revealed the dielectric dispersion behavior in agreement with Maxwell–Wagner model. It is seen that saturation magnetization and magnetic moment of NiCuZn ferrites alters with the Tb³⁺ content and sintering temperature. The doping of rare earth element Tb³⁺ in NiCuZn ferrites significantly amends the structural and electromagnetic properties of the host material. Thus, Tb doped NiCuZn ferrites have major impact on structural, optical and magnetic properties, and it is good for multilayer chip inductor component application.

在这项研究中，稀土元素b掺杂的Ni _0.4 Cu _0.2 Zn _0.4 Tb _x Fe _{2− x} O ₄（其中X 以柠檬酸为催化剂，通过自动燃烧路线合成0.025〜0.025，以0.025为步长。详细探讨了结构，形态，光谱和磁性能。通过能量色散X射线分析（EDAX），XRD的X射线衍射，场发射扫描电子显微镜，透射电子显微镜，傅里叶变换红外光谱，UV-Vis光谱（UV），拉曼光谱和振动来表征铁氧体样品样品磁力计技术。EDAX分析验证了所需化学计量的铁氧体样品的形成。XRD技术验证了尖晶石立方结构的形成。发现随着Tb ^3+的增加，所有铁素体的晶格常数都会降低。内容。形态学研究表明，铁素体的晶粒尺寸保持在11–24 nm范围内。的尖晶石晶格两种特性IR吸收带的存在υ ₁（561-567）厘米^-1和υ ₂（534-542）厘米^-1为的NiCuZn铁氧体系统在批准的四面体-A和八面体-B位点存在阳离子以尖晶石晶格分布。UV-Vis测量表明，在900°C的Ni _0.4 Cu _0.2 Zn _0.4 Tb _x Fe _{2− x} O ₄（其中X = 0.0到0.1以0.025为步长）铁氧体具有多种光学特性，具体取决于样品的成分。拉曼指纹证实了尖晶石的结构以及合成纳米材料中阳离子分布的变化。NiCuZn铁氧体的频率相关介电常数显示出与Maxwell–Wagner模型一致的介电色散行为。可以看出，NiCuZn铁氧体的饱和磁化强度和磁矩随Tb ³⁺含量和烧结温度的变化而变化。稀土元素Tb ³⁺的掺杂NiCuZn铁氧体中的铁氧体显着改善了基质材料的结构和电磁性能。因此，掺Tb的NiCuZn铁氧体对结构，光学和磁性能有重要影响，并且对多层片式电感器组件的应用非常有利。