SYNTHESIS AND CHARACTERIZATION OF NiFe2O4 SPINEL NANOPARTICLES
DOI:
https://doi.org/10.51580/2024-4.2710-1185.51Keywords:
nickel ferrite, spinel, nanoparticles, sol-gel synthesis, magnetic properties, X-ray diffraction, EDS, FTIR, Hysteresis loops, Ferrimagnetic materialAbstract
Abstract. Introduction. Nickel ferrite (NiFe2O4) spinel nanoparticles have attracted great interest in
recent years due to their unique physicochemical properties and wide range of applications in various
fields. Methodology. In this work, the synthesis of NiFe2O4 nanoparticles by the sol-gel method was
studied. The synthesized NiFe2O4 nanoparticles were characterized using methods such as X-ray
diffraction analysis and energy-dispersive X-ray microanalysis. Results and discussion. The results of Xray diffraction analysis showed that the main phase in the analyzed samples is iron-containing oxide of
cubic structure NiFe2O4, and the position and relative intensity of the peaks correspond to the standard
JCPDS No. 54–0964. Also, EDS analysis of the studied samples showed that the nanopowders consist of
the elements Ni, Fe and O, which indicates the purity of the synthesized sample and the absence of any
impurities. FTIR spectrum of NiFe2O4 nanoparticles showed two main peaks at 458 cm−1 and 548 cm−1
corresponding to the metal-oxygen band. Conclusion. The results of the study of the magnetic properties
of the obtained NiFe2O4 nanoparticles show that the magnetic properties change depending on the alloy
components and phase composition, i.e. FeNiO (77% Fe3O4 - magnetite 23% Fe0.64Ni0.36) is a particle of
about 25 nm size, a multicomponent ferromagnetic powder with a predominant magnetite phase, low
coercivity and relatively large saturation magnetization values. This means that they are a soft magnetic
material with high magnetic properties.
