ISSN:
1434-6036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Low temperature specific heat, magnetic susceptibility andL III-XAS measurements on Ce24Co11 are reported. The electronic specific heat can be decomposed into two contributions: a low temperature one (arising atT〈5 K), with a maximum of 2.2 J/Kmole at 0.9 K, and another one becoming dominant atT〉5 K, characterized by a γHT = 1.8 J/K2 mole coefficient. The χ·T product changes continuously with temperature, from 0.48 emu K/mole at 2 K to 7.85 emu K/mole at 200 K. TheL III-mean valence is ν=3.15. As the 24 Ce atoms are distributed in ten unequivalent crystalline sites, we interpret the experimental results as due to: one atom which behaves as a Heavy Fermion and the rest as Kondo and Intermediate Valent, with a distribution of characteristic energies governed by nine different environments. Qualitatively, the specific heat behaviour under applied field and the ν=3.15 value are in agreement with this interpretation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01313833
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