Ferromagnetic Resonance in Nickel Ferrite as a Function of Temperature

Ferromagnetic resonance in NiOFe₂{O}₃has been studied over a temperature range of - 195^∘C to 588^∘C. From this study the variation in line width with temperature,g$ value, and magnetic anisotropy constants ${K}₁$ and ${K}₂$ have been determined. Results show that the line width decreases with increasing temperature, the $g$ value remains essentially constant, and the two anisotropy constants show different sign behavior over the temperature range.