| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1600966 | Intermetallics | 2011 | 4 Pages |
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.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► The low temperature resistivity of Ce1−xLaxCu4Al is very sensitive to the applied magnetic field. ► A negative magnetoresistivity is observed in all the studied alloys. MR is about 5% at T = 2 K in all cases and is typical of the heavy fermion systems. ► Based on the magnetoresistivity measurements at various temperatures and by employing a Schlottmann's model for the Bethe-ansatz solution within the Coqblin–Schrieffer model, the Kondo moment μK and the Kondo temperature TK have been estimated. ► As expected a small, Kondo-screened moments are revealed. TK is decreasing with the content of La, which is probably due to the unit cell volume increase.
