We report the results of the studies on electrical properties of Zn_1–xFe_xO (x = 0.10, 0.15 and 0.20) nanoparticles synthesized using sol–gel method. X–ray diffraction (XRD) measurement confirms the presence of extra phase of ZnFe₂O₄ in all the samples which gets enhanced with increase in Fe concentration. Surface morphological studies using atomic force microscopy (AFM) suggest the reduction in grain size with increase in Fe doping level in ZnO. All the dielectric parameters show dispersion nature and dielectric constant has been found to increase with Fe content. The obtained dielectric behavior has been understood on the basis of Maxwell–Wagner (M − W) mechanism and Koop's theory. Frequency dependent electrical conductivity has been understood on the basis of Jonscher's universal power law that suggests a conduction of charge carrier through correlated barrier hopping (CBH) mechanism. Impedance spectroscopy measurements have been explained on the basis of crystal cores and crystal boundary density. Grain boundary contribution in conduction mechanism is identified by fitting equivalent circuit model on cole–cole plots. Temperature and magnetic field dependent variation in electrical properties of studied samples has been understood on the basis of structure–property correlations.

我们报告了使用溶胶-凝胶法合成的 Zn _1-x Fe _x O（x = 0.10、0.15 和 0.20）纳米粒子的电性能研究结果。X 射线衍射 (XRD) 测量证实存在 ZnFe ₂ O ₄额外相在所有样品中，随着 Fe 浓度的增加而增强。使用原子力显微镜 (AFM) 进行的表面形态研究表明，随着 ZnO 中 Fe 掺杂水平的增加，晶粒尺寸减小。所有的介电参数都表现出色散性质，并且已经发现介电常数随着 Fe 含量的增加而增加。已根据 Maxwell-Wagner (M - W) 机制和 Koop 理论理解了所获得的介电行为。根据 Jonscher 的通用幂定律，频率相关的电导率已被理解，该定律表明电荷载流子通过相关势垒跳跃 (CBH) 机制进行传导。阻抗谱测量已经根据晶核和晶界密度进行了解释。通过在科尔-科尔图上拟合等效电路模型来确定传导机制中的晶界贡献。在结构-性能相关性的基础上，已经了解了所研究样品的电特性的温度和磁场相关变化。