The solid-state reaction technique was employed to synthesize the SrNdMnO oxide. The resulting pure phase powder was obtained by quenching the mixture in air from 1400 °C to room temperature. The Rietveld refinement of XRD data confirmed the tetragonal KNiF-type structure and 4/ space group. Upon analysis of the complex impedance, it was observed that the SrNdMnO sample exhibited two electrical equivalent circuits, which were needed to explain the impedance results. To investigate the electrical conductive properties of composite materials under different temperate conditions, Jonscher's power law expression was utilized. The calculated activation energies from both the analysis of the electrical circuit equivalent and the conductivity data were found to be closely similar. This supports the conclusion that ion hopping mechanism plays a key role in the transport of charges within the investigated materials. Additionally, it was observed that thermal activation predominantly governs the conduction process.

中文翻译：

---

ruddlesden-popper Sr1.80Nd0.20MnO4 氧化物的结构和复阻抗研究

采用固相反应技术合成了SrNdMnO氧化物。通过将混合物在空气中从1400℃骤冷至室温获得所得纯相粉末。XRD 数据的 Rietveld 精修证实了四方 KNiF 型结构和 4/ 空间群。通过对复阻抗的分析，我们发现 SrNdMnO 样品表现出两个等效电路，这需要解释阻抗结果。为了研究复合材料在不同温度条件下的导电性能，利用 Jonscher 幂律表达式。发现通过电路等效分析和电导率数据计算出的活化能非常相似。这支持了离子跳跃机制在所研究材料内的电荷传输中发挥关键作用的结论。此外，据观察，热激活主要控制传导过程。