Magnetic Behavior of Virgin and Lithiated NiFe2O4 Nanoparticles

A series of virgin and lithia-doped Ni ferrites was synthesized using egg-white-mediated combustion. Characterization the investigated performed several techniques, specifically, X-ray Powder Diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), High-resolution transmission electron microscopy (HRTEM). XRD-based structural parameters were determined. closer look at these characteristics reveals that lithia doping enhanced nickel ferrite lattice constant (a), unit cell volume (V), stress (ε), microstrain (σ), dislocation density (δ). It also separation between magnetic ions (LA LB), ionic radii (rA, rB), bond lengths (A-O B-O) tetrahedral (A) octahedral (B) locations. Furthermore, it (Dx) crystallite size (d) random spinel displaying opposing patterns behavior. FTIR-based functional groups HRTEM-based morphological properties investigated. These NiFe2O4 particles, such as their size, shape, crystallinity, demonstrate manufactured particles are present nanoscale caused shape modification particles. Additionally, prepared ferrite’s surface area total pore marginally increased after being treated with lithia, depending on visibility grain boundaries. Last, but not least, dopant content through a variety methods, magnetization fell corresponding increase in coercivity. Uniaxial anisotropy, rather than cubic antisite cation excess defects developed because squareness ratio (Mr/Ms) less 0.5. Small values strongly recommend assessed high-frequency applications.