High-field investigation of the intersublattice interaction in GdCo5

Abstract An upturn of a magnetization curve of a GdCo 5 single crystal was observed in a magnetic field of about 46 T. The upturn is associated with a transition from collinear to canted magnetic structure. The sample was free to rotate, thus influence of magnetic anisotropy on the spin-reorientation process was eliminated. A threshold field of the transition yields the value of 233 T for Co–Gd exchange field.