DESCRIPTION OF THE MAGNETIZATION OF SOME USUAL HEAVY FERMIONS IN AN ISING ANTIFERROMAGNETIC MODEL OF KONDO SPINS IN THE MEAN FIELD APPROXIMATION

Abstract
Magnetization and specific heat experiments of usual magnetic and non-magnetic heavy fermions (CeMg, CeAl₂, CeCu₂Ge₂, CeCu₂, CeCu₅, CePb₃, CeIn₃, CeAl₃, CeCu₆, ...) are well described in a simple analytical model starting from the initial Schotte and Schotte results. A phenomenological extension of our approach beyong the mean field approximation allows to understand the resistivity for T ≈ T_K and T << T_K (T_K=impurity-like Kondo temperature).