Metallic ferromagnetism in a single-band model. II. Finite-temperature magnetic properties

A recently proposed band model to describe metallic ferromagnetism is studied at finite temperatures within the mean-field approximation. We discuss in particular the behavior of critical temperature, specific heat, magnetic susceptibility above $T_c$, and magnetization below $T_c$ assuming a constant density of states. The model overcomes in a simple way the major difficulties of Stoner theory and yields properties that are consistent with a variety of observations in ferromagnetic metals and alloys.