Abstract
Single layer monodisperse Ni nanoparticles were successfully prepared by reductive annealing of NiO films formed by magnetron sputtering. The spherical Ni nanoparticles had a monodisperse distribution on the substrate. The formation process of Ni nanoparticles was investigated, and the Ni nanoparticle size can be precisely controlled by the magnetron sputtering time. Morphology of these nanoparticles was observed with scanning electron microscopes and transmission electron microscopes. Magnetic properties of Ni nanoparticles have been confirmed by using a vibration sample magnetometer. The blocking temperature, particle size, and effective anisotropy constant were calculated by fitting the relationship between coercivity and temperature.
Published Version
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