In the present study, ZnCo₂O₄ nanoparticles were synthesized using the sol–gel method. Structural and morphological properties of the sample were analyzed using X-ray diffraction and scanning electron microscope. Cell volume, lattice parameter, dislocation density, and microstrain were calculated using the Debye Scherrer and Williamson Hall method. The temperature and frequency dependence of AC conductivity and dielectric properties of ZnCo₂O₄ in a pellet form were analyzed in 3 kHz–1.5 MHz frequency range and 300–500 K temperature range. To determine AC conductivity and dielectric characteristics in more detail, they were divided into three temperature groups as zone I (300–340 K), zone II (360–400 K), and zone III (420–500 K). It is observed that each zone exhibits different behaviors. AC conductivity mechanisms of the sample was explained using correlated barrier hopping, overlapping large-polaron tunnelling, and non-overlapping small polaron tunnelling models for zone I, II, and III, respectively.

在本研究中，ZnCo ₂ O ₄纳米颗粒是使用溶胶-凝胶法合成的。使用X射线衍射和扫描电子显微镜分析样品的结构和形态特性。使用 Debye Scherrer 和 Williamson Hall 方法计算单元体积、晶格参数、位错密度和微应变。ZnCo ₂ O ₄的交流电导率和介电特性的温度和频率依赖性在 3 kHz–1.5 MHz 频率范围和 300–500 K 温度范围内分析颗粒形式的 为了更详细地确定交流电导率和介电特性，将它们分为三个温度组：I 区（300-340 K）、II 区（360-400 K）和 III 区（420-500 K）。观察到每个区域表现出不同的行为。分别使用区域 I、II 和 III 的相关势垒跳跃、重叠大极化子隧穿和非重叠小极化子隧穿模型来解释样品的 AC 电导机制。