Abstract Rare earth based orthoferrite ceramic presents diverse fascinating properties which focuses the current research work in the preparation of CeMnxFe1-xO3-δ (x = 0, 0.5 and 1) nanomaterials via sol-gel route in order to explore their structural, magnetic optical and electrical properties. The crystallite size and structural phase were determined by powder X-ray-diffraction technique (PXRD). The finger print regions of vibrational bands of CeMnxFe1-xO3-δ (x = 0, 0.5 and 1) were observed in the range of 300–700 cm−1 from FT-IR spectroscopic studies. The morphology of the synthesized nanomaterials was analyzed using HR-TEM, thus the planes obtained from the selected area diffraction pattern corresponding with the XRD phase confirmed the orthorhombic structure of the as synthesized materials. UV–Visible spectra exhibited two noticeable absorption bands in the ultraviolet region and the band gap was found to decrease on doping manganese content. Urbach energy calculated near first and second absorption peaks indicated the nanocrystalline nature of the materials. Further, the dielectric properties, conductivity and impedance analysis were determined. These results obtained demonstrate the physical properties of CeFeO3 system which could be tailored by the appropriate dopant for real-time applications.

中文翻译：

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CeMnxFe1-xO3-δ钙钛矿材料的结构、电学和磁光性能的影响

摘要 稀土基正铁氧体陶瓷具有多种引人入胜的特性，目前的研究工作集中在通过溶胶-凝胶法制备 CeMnxFe1-xO3-δ (x = 0、0.5 和 1) 纳米材料，以探索其结构、磁光学和电气特性。通过粉末X射线衍射技术(PXRD)确定微晶尺寸和结构相。FT-IR 光谱研究在 300-700 cm-1 范围内观察到 CeMnxFe1-xO3-δ（x = 0、0.5 和 1）振动带的指纹区域。使用 HR-TEM 分析合成纳米材料的形貌，因此从与 XRD 相对应的选区衍射图获得的平面证实了合成材料的正交结构。紫外-可见光谱在紫外区表现出两个明显的吸收带，并且发现带隙随着掺杂锰含量而减小。在第一个和第二个吸收峰附近计算的 Urbach 能量表明材料的纳米晶体性质。此外，确定了介电特性、电导率和阻抗分析。获得的这些结果证明了 CeFeO3 系统的物理特性，可以通过适当的掺杂剂为实时应用定制。