Abstract The flexible nanocomposites of bismuth ferrite and polyvinylidene fluoride were prepared by the solution casting method. The X-ray diffraction technique confirms the presence of both the inorganic filler (bismuth ferrite) and polymer phases. Atomic force microscopy study shows the increasing values of root mean square (RMS) roughness in the nanocomposites. The modulus and impedance spectroscopy were performed to get insight contribution of grains, grain boundaries, and interfaces on the electrical properties. From the Nyquist plot analysis, grains effect is dominant over the grain boundaries and non-Debye type relaxation behavior is observed for the nanocomposites. Correlated barrier hopping (CBH) model is the most suitable model to explain the transport properties of the charge carriers. The hopping distance increases from 8.11 A to 27.25 A with increasing the content of inorganic fillers in the nanocomposites. The presence of the different conduction processes at various temperature regions is explained by the Arrhenius plot analysis.

中文翻译：

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聚合物基柔性纳米复合材料的阻抗谱和传输特性

摘要 采用溶液浇铸法制备了铁酸铋和聚偏二氟乙烯的柔性纳米复合材料。X 射线衍射技术证实了无机填料（铁酸铋）和聚合物相的存在。原子力显微镜研究显示纳米复合材料中均方根 (RMS) 粗糙度值增加。进行模量和阻抗谱以了解晶粒、晶界和界面对电性能的贡献。从奈奎斯特图分析，晶粒效应在晶界上占主导地位，并且观察到纳米复合材料的非德拜型弛豫行为。相关势垒跳跃（CBH）模型是解释电荷载流子传输特性的最合适的模型。跳跃距离从 8.11 A 增加到 27。25 A 随着纳米复合材料中无机填料含量的增加。阿伦尼乌斯图分析解释了在不同温度区域存在不同传导过程。