The present study reports the frequency-dependent electrical properties of sodium silicate (Na2SiO3) (SS) at different temperatures to understand the contribution of grain and grain boundary polarization to its electrical response at a lower frequency region. The low-frequency dielectric dispersion and non-Debye-type dielectric relaxation are attributed to polaron hopping that controls the complex impedance of SS. A single semi-circular arc in Nyquist plot indicates a dominance of grain boundary polarization in the relaxation mechanism. The analysis of frequency-dependent ac conductivity in the studied temperature regime can be used to define the correlated barrier hopping model.

中文翻译：

---

Na2SiO3 的频率相关电学行为：简要报告

本研究报告了不同温度下硅酸钠 (Na2SiO3) (SS) 的频率相关电特性，以了解晶粒和晶界极化对其在较低频率区域的电响应的贡献。低频介电色散和非德拜型介电弛豫归因于控制 SS 复阻抗的极化子跳跃。奈奎斯特图中的单个半圆弧表明松弛机制中晶界极化占主导地位。在研究的温度范围内对频率相关的交流电导率的分析可用于定义相关的势垒跳跃模型。