Evidence for Kondo-type behaviour in CexR1- xM compounds with R = La, Y and M = Mg, Zn
- 1 January 1985
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 46 (4) , 621-626
- https://doi.org/10.1051/jphys:01985004604062100
Abstract
The compounds CeMg, CeZn and the dilute solutions CexR 1-xM with R = La, Y and M = Mg, Zn have the CsCl-type structure. The magnetic and electrical properties of the dilute compounds were investigated in the temperature range 1.5-300 K. The paramagnetic susceptibilities show Curie-Weiss behaviour with Curie constants close to the free ion value at high temperatures, but show at lower temperatures deviations due to crystal field and Kondo effects. Resistivity minima are observed in Ce0.2Y 0.8Mg, Ce0.1Y0.9Mg and Ce0.05Y 0.9.5Zn. The electronic coefficients γ are deduced from the specific heat measurements on CeMg and CeZn. These values respectively 40 ± 10 and 19 ± 5 mJ/mole K2 are much higher than the corresponding values for non-magnetic matricesKeywords
This publication has 3 references indexed in Scilit:
- Pressure dependence of the Néel temperature in CeMg and CeZnSolid State Communications, 1983
- Magnetic susceptibility, electrical resistivity and neutron spectroscopy of some cubic cerium intermetallicsJournal of Physics F: Metal Physics, 1981
- Nonlinear band behaviour in RMg compoundsJournal of Magnetism and Magnetic Materials, 1980