Abstract
The current research is concerned with the structure, morphology, and physical properties of a double perovskite La2FeCrO6. The crystallite size of the sample was determined to be 22.46 nm using the modified Scherrer equation. The elemental composition of La2FeCrO6 was confirmed through X-ray photoelectron-spectroscopy (XPS), which detected La, Fe, Cr, and oxygen, as well as oxygen deficiencies that significantly impact the observed ferroelectric behavior in the investigated sample. High-resolution transmission electron microscopy (HRTEM) verified the nanoscale preparation of the sample with an average particle size of 33.32 nm. Thermogravimetric analysis (TGA) was employed to investigate the thermal properties of the sample including the calculation of thermodynamic functions such as changes in enthalpy (ΔH) and entropy (ΔS) for La2FeCrO6. The material exhibits an optical direct transition with a band gap value of 3.4 eV and an Urbach energy of 2.5 eV. Due to its large specific surface area and band gap value, La2FeCrO6 shows promise in applications such as photocatalysis and water purification. The ac conductivity of La2FeCrO6 follows the universal dielectric response (UDR), and the P-E loop of the sample demonstrates its ferroelectric behavior.
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