ISSN:
1090-6487
Keywords:
75.10.Dg
;
71.70.Ch
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The effects of the crystal field (CF) on the paramagnetic Pr ion in a number of compounds of the type R1−x PrxNi (R = Ce, La, Y), in which a transition of the cerium ions from an intermediate-valence into a Kondo state occurs as La is substituted for Ce, are investigated. The level schemes of the Pr ion in the CF are reconstructed from inelastic neutron scattering spectra and the temperature dependence of the heat capacity in different magnetic fields (B=0–8 T). The parameters of the low-symmetry CF in the compounds RNi are determined from the experimental data. It is established that in the Kondo regime the hybridization of the f electrons with conduction electrons only gives a proportional increase in all the parameters of the CF potential. At the same time, partial delocalization of the f electrons in the intermediate-valence state results in charge redistribution, which is manifested in different scales for the changes in the different CF parameters.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1134/1.567115
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