Abstract
Nickel magnetic nanoparticles have been successfully fabricated by combination of polyol process and hydrothermal treatment. In this research, the formation of Ni nanoparticles was determined by X-ray diffraction (XRD) and Ultraviolet–visible spectroscopy (UVVis). The morphology and size of nanoparticles were observed by using Transmission Electron Microscopy (TEM) while magnetic property of Ni nanoparticles have been characterized by vibrating sample magnetometer (VSM). The results indicate that the synthesized Ni nanoparticles are in spherical shape and the sizes of nanoparticles are in range from 3.1 nm to 5.7 nm depending on concentration of Ni2+ ions. The magnetization study in nickel nanoparticles shows ferromagnetic interaction but close to superparamagnetic state and the magnetization decreases with the size reduction.
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