Evaluation of micro-structural and magnetic properties of nickel nano-ferrite and Mn2+ substituted nickel nano-ferrite

Highlights: • Mn²⁺ Substituted Nickel Nano-Ferrite is reported in this manuscript. • Saturation magnetization and magnetic moment of the NiFe₂O₄ is lower than Ni_0.7Mn_0.3Fe₂O₄. • Lattice parameter value and volume of unit cell rises with manganese substitution. • Cation distribution indicates that the Ni²⁺ ions inhabit B-sites and Mn²⁺ ions dwell in tetrahedral A-spot and the Mn²⁺ ions swap Ni²⁺ from tetrahedral spot. The spinel ferrites have remarkable applications in electronic technology owing to their elevated saturation magnetization, steadiness, resistivity and little loss energy over a broad array of frequencies. The features with respect to structure and magnetism of manganese doped NiFe₂O₄ nano ferrite are extensively probed. The lattice parameter value and volume of unit cell rises with manganese substitution. The cation distribution indicates that the Ni²⁺ ions inhabit B-sites and Mn²⁺ ions dwell in tetrahedral A-spot and the Mn²⁺ ions swap Ni²⁺ from tetrahedral spot. The saturation magnetization and magnetic moment of the NiFe₂O₄ is lower than the manganese substituted ferrite. Spectra pertaining to electron spin resonance exhibit a lone signal wide enough showing the occurrence of Fe³⁺, Ni²⁺ and Mn²⁺ ions with a 'g' approximately equal to 2.00.