Effect of pH on structural, morphological, photoacoustic and magnetic properties of lanthanum doped nickel ferrite nanocomposites

摘要

Nano crystalline nickel lanthanum ferrite at different pH values was synthesized via chemical precipitation technique. A detailed microstructural study has been performed using X-ray diffraction (XRD), Fourier Transform infrared (FTIR), Transmission electron microscopy (TEM). XRD pattern showed the formation of single phase spinel cubic structure above certain annealing temperature it strongly depends on pH values during the co-precipitation technique. The analysis of FTIR and FT-Raman of the as-synthesized materials prepared at different pH values indicates the ordering of cations A and B site in the spinel cubic structure. TEM analysis depicts the morphology of the as-synthesized nickel lanthanum ferrite whereas the pH value varies the particle size with respect to the X-ray diffraction. The magnetic property of as-synthesized material was elucidated using Vibrating sample magnetometer with coercive field. The saturation magnetization increases the pH value for the soft ferromagnetic nature at room temperature and also the ferromagnetic parameters varies with the pH value of as-synthesized lanthanum doped nickel ferrite. The tailoring of magnetic properties have prompted to the development of industrial technology.