Yafet–Kittel-type magnetic ordering in Ni0.35Zn0.65Fe2O4 ferrite detected by magnetosensitive microwave absorption measurements

Magnetosensitive microwave absorption measurements of polycrystalline ferrite Ni0.35Zn0.65Fe2O4 was carried out at 9.4 GHz (X-band) as a function of temperature. Temperature dependence of the total linewidth (ΔHpp) deduced from the resonance spectra showed the passage through the Curie point (Tc~430 K). Additionally, the plot ΔHpp vs. T also indicated the existence of another magnetic phase transition at ~240 K, which can be associated with a Yafet–Kittel-type canting of the magnetic moments. Low-field microwave absorption (LFMA) and the magnetically modulated microwave absorption spectroscopy (MAMMAS) were used to give a further knowledge on this material. For low temperature, these techniques give evidence of a Yafet–Kittel-type canting of the magnetic moments.