Browsing by Subject "Coprecipitation method"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Preparation and Magnetic Properties of NiFe2O4 Plate Nanoparticles
    (Springer, 2021) Kocan F.
    The aim of this study was to investigate nickel ferrite (NiFe2O4) plate nanoparticles synthesized by the co-precipitation method. The effects of parameters such as solution pH and Fe3+/Ni2+ mole ratio of nickel ferrite nanoparticles were analyzed. The nanoparticles synthesized by the co-precipitation method were calcined at 650°C. The samples were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive x-ray analysis (EDAX), and Fourier-transform infrared spectroscopy (FTIR). The remanent magnetization, saturated magnetism, and coercivity properties of the samples were measured with a vibrating sample magnetometer (VSM). In a synthesis process with Fe3+/Ni2+ = 1 mole ratio, a Ni1.43Fe1.7O4 compound was formed where NiFe2O4 was expected to form. NiFe2O4 plate nanoparticles with 108-nm particle size were successfully synthesized using the Fe3+/Ni2+ = 2 mole ratio. © 2021, The Minerals, Metals & Materials Society.
  • No Thumbnail Available
    Item
    Characterization and magnetic properties of CoFe2O4 nanoparticles synthesized by the co-precipitation method
    (John Wiley and Sons Inc, 2024) Bayça F.
    In this study, the characterization and magnetic properties of CoFe2O4 nanoparticles synthesized by co-precipitation method were investigated. The calcined products obtained were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDAX), Fourier transformed infrared (FTIR) spectroscopy, and vibrating sample magnetometer. Crystallite size and phase composition were analyzed by X-ray diffraction. Crystallite size and phase composition were analyzed by X-ray diffraction. The average crystallite size of CoFe2O4 nanoparticles increased in the range of 15.85–32.14 nm with an increase in temperature from 500 to 700°C. It was observed that spherical CoFe2O4 nanoparticles were produced. Synthesis of CoFe2O4 nanoparticles was confirmed using XRD, SEM-EDAX, and FTIR analyses. The effect of crystallite size, calcination temperature, and lattice parameter on saturation magnetization, remanent magnetization, coercivity, and magnetocrystalline anisotropy were investigated by vibrating sample magnetometer. As the crystallite size value increased, magnetocrystalline anisotropy also increased. © 2023 The American Ceramic Society.