Magnetoresistivity of Ce1−xLaxCu4Al compounds

The dependence of magnetoresistivity (MR) on the temperature and the magnetic field for Ce1–xLaxCu4Al (0 ≤ x ≤ 0.6) compounds has been investigated. In the low temperature region, magnetoresistivity exhibits a negative magnetic field dependence due to the Kondo effect. Magnetoresistivity measurements on the Ce1–xLaxCu4Al alloys are analyzed basing on the calculations by Schlottmann for the Bethe-ansatz in the frames of the Coqblin–Schrieffer model. The analysis yields the values of the Kondo temperature TK and effective moment of the Kondo ion μK.