Nanocrystalline  powder was synthesized by a simple and novel chemical route, which is based on the use of different chelating agents such as fresh coconut water, egg white, sucrose, glycerin, and fresh lemon juice adding to metal ions. In this work, X-ray diffraction analyses (XRD), dc magnetic susceptibility  measurements, and transmission electron microscope (TEM) have been employed to assure the formation of  nanosized particles and to obtain additional information about their physical characterizations using different types of safety materials. The magnetic properties of these nanoparticles are clearly size dependent. The variation of the lattice parameter with the type of chelating agent originates from the change in the inversion parameter. The largest and lowest values of  were obtained for the lemon and glycerin prepared samples, respectively.