Scaling of the Anomalous Hall Effect in Ferrimagnetic Co₉₀Gd₁₀ Thin Films

We investigated the anomalous Hall effect and longitudinal magnetoresistance in ferrimagnetic Co 90 Gd 10 thin films with thicknesses from 5 to 35 nm and temperatures from 80 to 300 K. As the temperature increases from 80 to 300 K, the saturation magnetization of Co 90 Gd 10 increases from 720 to 844 emu/cm 3 . However, the scaling law σ xy -σ xx n with n = 2.3 holds surprisingly well. Our results indicate that the scaling law usually reported in ferromagnetic materials remains valid for ferrimagnetic materials, which undoubtedly suggested the universality of the scaling law.