Polycrystalline Na_0.5Bi_0.5TiO₃ (NBT) system has been synthesized by solid-state reaction method. The dielectric and microstructural conduction mechanism has been investigated with the help of impedance spectroscopic technique. From microstructural conduction mechanism results, it is perceived that, two short range and two long range conduction/relaxation processes are evolved in different temperature and frequency zones. The dynamics of four relaxation/conduction processes are analyzed by considering the variation of activation energy (E_a) of each relaxation/conduction process in different temperature zone and represented by a model. In this model, coupling of two polar regions in different temperature and frequency zones has been systematically discussed.

通过固相反应法合成了多晶Na _0.5 Bi _0.5 TiO ₃（NBT）体系。借助阻抗谱技术研究了介电和微观结构的传导机理。从微观结构传导机制的结果可以看出，在不同的温度和频率区域中，发生了两个短程和两个长程传导/松弛过程。通过考虑活化能（E _a）的变化来分析四个松弛/传导过程的动力学）在不同温度区域的每个松弛/传导过程），并以模型表示。在该模型中，系统地讨论了在不同温度和频率区域中两个极性区域的耦合。