Thermal transport in the intermetallic compound CeNi4Cr
Institute of Molecular Physics, PAS, Poznań, Poland
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Received in final form: 12 September 2011
Published online: 10 November 2011
Electrical resistivity, thermopower (TEP), thermal conductivity and the thermoelectric figure of merit are studied for the CeNi4Cr compound, which has been previously suggested to be a fluctuating valence system with a tendency to the increase of the effective mass at low temperatures. The analysis of the thermoelectric properties confirms such a possibility and provides characteristic parameters like the Debye temperature, Fermi energy and the position of the f band. Both the thermopower and the magnetic part of the electrical resistivity could be analyzed within a similar model assuming a narrow f-band of the Lorentzian form near the Fermi energy. The thermal conductivity shows that the phonon contribution exceeds the electronic one below 220 K.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2011