Structural and Magnetic Characterization of Rare Earth Element Cerium-Doped Nickel Ferrite Nanoparticles (NiCexFe2-xO4) by Sol-Gel Method with Antibacterial Activity

The paper explains the different concentrations of rare earth element (REE) cerium-doped nickel ferrite nanoparticles prepared by the sol-gel method. The structural, morphological, and magnetic properties are characterized by XRD, SEM/TEM, and VSM techniques respectively. The XRD pattern shows the single phase with the spinel nature. The calculated particle size is confirmed with SEM/TEM analysis. The VSM technique is carried out to study the magnetic characterization of the prepared sample. Also, the decrease in the saturation magnetization and coercivity of the ferrite samples when varying the concentration of cerium ions is found. The antibacterial activity of nickel ferrite nanoparticles is also analyzed on gram-positive and gram-negative bacteria.