We proposed the synthesis of nanoparticles of cobalt ferrite and nickel ferrite from waste, for example, magnets that have expired. The method makes it possible to self-organize these nanoparticles in on various substrates. Why did the synthesis of nickel ferrite nanoparticles look five times greater than the synthesis of cobalt ferrite nanoparticles?
https://www.researchgate.net/publication/257835141_Magnetic_properties_of_nickel_ferrite_nanoparticles_prepared_using_flotation_extraction
https://www.researchgate.net/publication/257844892_The_structure_and_magnetic_properties_of_cobalt_ferrite_nanoparticles_synthesized_in_a_system_of_direct_micelles_of_amphiphiles_by_means_of_ion_flotoextraction
As we know, Co is having three unpaired electrons in 3d orbital in comparison to Ni which is having two electrons. Hence, the paramagnetic property of Co is more against Ni. Ferrite is having Fe3+ ion, which stablizes nano-structure more in the synthesis with Ni in comparison to Co.
Dear sir, it may be depend on ionization energy and ionization energy of Nickel is higher than Cobalt, which help to more stability with Fe3+ ion in comparison to Cobalt. and i also agree with Mr. Raghbendra Thakur sir.
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