Measurements of Hall Loop of GdCo and GdFe Amorphous Films with Perpendicular Magnetic Anisotropy Under Pulsed High Magnetic Field up to 40 T

To better understand the magnetic structures of magnetically anisotropic GdCo and GdFe amorphous films, Hall characteristics were measured under strong pulsed magnetic fields up to 40 T. Anomalous magnetization loops were observed for GdCo and Bi-doped GdFe film, differing from data obtained for weaker fields, and changes in residual Hall voltage with the in-plane magnetic field were also determined.