Onset of ferromagnetism in the band paramagnet LuCo2 upon the replacement of cobalt by aluminum
Gabelko I. L. , Levitin R. Z. , Markosyan A. S. , Snegirev V. V.
As the aluminum concentration in the Lu(Coi_x Alx )2 is increased, there are transitions from band paramagnetism to weak ferromagnetism and then to strong ferromagnetism. The evolution of the magnetic properties of this system can be explained in a qualitative way in a band model in terms of an increase in the state density at the Fermi level with increasing x.