Structural, Spectroscopic and Magnetic Study of Nanocrystalline Terbium–Nickel Ferrite by Oxalate Co-Precipitation Method

Rare earth element terbium (Tb3+), nickel (Ni2+) and iron oxide are incorporated ferrites (Ni0.5MTb0.5MFe2MO4/PVP) by the oxalate co-precipitation method. This oxalate helps get free of extra terbium and nickel by binding with iron oxide. XRD declared that the polycrystalline microstructure of synthesized materials. FT-IR spectra noted that the two prestigious vibration band coordination’s at (584–610 cm−1) and (412–422 cm−1) and promoted to an inverse spinel structure. TEM reveals the spherical shape for the Magnetostrictive effect. VSM reveals the super-paramagnetic properties of synthesized mixed ferrite materials. EPR study shows the grain/lattice development of the symmetry/asymmetry nature of ferrite particles. TGA/DSC reveal that the ferrite formation (ferritization) gets completed at a thermal activation temperature (678.84 °C). Such optimized super-paramagnetic nanoparticles could be a good promising candidate for their use in high-frequency applications.