Der Übergang vom magnetischen zum nichtmagnetischen Ce in flüssigen Legierungen

Under pressure and in several intermetallic compounds Ce exhibits a phase transition from the magnetic to the nonmagnetic state connected with the delocalisation of the 4felectron. We have measured the magnetic susceptibility of liquid La, Ce and Pr and of liquid alloys of Ce with normal metals and transition metals. In liquid alloys with La, Pr, Cu and Sn the Ce keeps its localized magnetic moment over the full range of concentration. In liquid alloys with Ni, Co and Rh, however a continuous transition of Ce into the nonmagnetic state is observed.