Inorganic compound of iron oxide (Fe₂O₃) nanoparticles was combined with the conducting polymers, which provides excellent modifications in chemical and physical properties. Therefore, the nanoparticles (NPs) of Fe₂O₃ synthesized by green combustion method, obtained iron oxide NPs of various quantity doped with polyaniline at 10, 30 and 50 wt%. Polymerization was conducted by in situ polymerization route with ammonium persulphate as an oxidizing agent in aqueous hydrochloric acid solution under constant stirring at 5°C. Characterizations of synthesized samples were carried through XRD analysis. The crystallite size 31 nm is found by using Debye–Scherrer relation, also the grain size is employed to calculate dislocation density and micro strain (η) which is influenced on diffraction-line broadening. And also, dielectric properties of the synthesized samples were studied as a function of frequency that shows the improved interaction between iron oxide nanoparticles and polyaniline. These polymer nanocomposites owe potential applications to the fields of optical, electrical and shielding materials.

氧化铁 (Fe ₂ O ₃ ) 纳米颗粒的无机化合物与导电聚合物结合，在化学和物理性能方面提供了极好的修饰。因此，通过绿色燃烧法合成的Fe ₂ O ₃纳米颗粒(NPs) ，获得了掺杂10、30和50wt％聚苯胺的不同数量的氧化铁NPs。原位聚合以过硫酸铵为氧化剂，在盐酸水溶液中，在 5°C 下持续搅拌的聚合路线。合成样品的表征通过XRD分析进行。通过使用 Debye-Scherrer 关系发现微晶尺寸为 31 nm，并且使用晶粒尺寸来计算位错密度和微应变（η），这对衍射线加宽有影响。而且，合成样品的介电特性作为频率的函数进行了研究，表明氧化铁纳米颗粒和聚苯胺之间的相互作用得到改善。这些聚合物纳米复合材料在光学、电气和屏蔽材料领域有潜在的应用。