Effect of Annealing Temperature on the FMR Characteristics of Nickel–Zinc Ferrites

Nanosized nickel–zinc ferrites of Ni0.25Zn0.75Fe2O4 composition are synthesized by low-temperature nitrate–citrate and nitrate–urea means and annealed at temperatures of 400–900°С. The synthesized samples are studied via scanning electron microscopy and ferromagnetic resonance (FMR). The effect the annealing temperature has on the microstructural and FMR characteristics of Ni0.25Zn0.75Fe2O4 is analyzed.