Abstract
Nickel ferrite nanocrystals were prepared from an aqueous solution containing metal nitrates and various concentrations of poly(vinylpyrrolidone) followed by calcination temperature. X-ray diffraction (XRD) analysis was performed to determine the degree of crystallinity of the ferrite nanoparticles. By transmission electron microscopy, the morphology and average particle size of the nickel ferrite nanoparticles were evaluated which had good agreement with the XRD results. Fourier transform infrared spectroscopy suggested the presence of metal oxide bands in all samples as well as the effective elimination of organic constituents after calcinations. Measurements of the extent of magnetization of the nickel ferrite nanoparticles synthesized in different concentrations were obtained at room temperature using a vibrating sample magnetometer.
Highlights
The last two decades have seen a significant growth in the study of nanomaterials such as ferrite nanoparticles
For answers to these questions, nickel ferrite nanocrystals were prepared from an aqueous solution containing metal nitrates and various concentrations of poly(vinylpyrrolidone) followed by calcination temperature
Effect of calcinations temperature on the crystallinity, phase composition, morphology and magnetic properties In this subsection, we briefly report the results of our previous work [16] that the authors investigated on the effect of calcination temperature on the crystallinity, phase composition, morphology, and magnetic properties of nickel ferrite nanoparticles
Summary
The last two decades have seen a significant growth in the study of nanomaterials such as ferrite nanoparticles. The interest in research related to metal spinel ferrite nanoparticles has increased significantly in recent years due to their potential applications in ferrofluids [1], magneto-optics [2], spintronics [3], biomedical applications [4,5], and anodes for batteries [6]. In this work, the fundamental question that we are attempting to address is how and to what extent the PVP capping agent improves the efficiency of nickel ferrite nanoparticles fabricated by the thermal treatment method For answers to these questions, nickel ferrite nanocrystals were prepared from an aqueous solution containing metal nitrates and various concentrations of poly(vinylpyrrolidone) followed by calcination temperature. Nanoparticles were agglomerated; higher than this value, nanoparticles had impurity
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