Thermoelectric Power in Ce Systems with Unstable Valence

In this paper, we report on a few exemplary tests of the applicability of analysis based on the interconfiguration fluctuation model (ICF) for a description of the temperature dependence of the thermoelectric power, <i>S</i>(<i>T</i>). The examples include a series of alloys:...

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Bibliographic Details
Main Author: Tomasz Toliński
Format: Article
Language:English
Published: MDPI AG 2021-09-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/11/9/1475
Description
Summary:In this paper, we report on a few exemplary tests of the applicability of analysis based on the interconfiguration fluctuation model (ICF) for a description of the temperature dependence of the thermoelectric power, <i>S</i>(<i>T</i>). The examples include a series of alloys: CeNi<sub>2</sub>(Si<sub>1−y</sub>Ge<sub>y</sub>)<sub>2</sub>, Ce(Ni<sub>1−x</sub>Cu<sub>x</sub>)<sub>2</sub>Si<sub>2</sub>, and the fluctuating valence (FV) compound CeNi<sub>4</sub>Ga. The two series develop from CeNi<sub>2</sub>Si<sub>2</sub> being the FV system, where the f states occupation increases progressively with the Ge or Cu substitution. We find here that the ICF model parameters are of similar magnitude both for the analysis of the temperature dependence of the magnetic susceptibility and thermoelectric power. The ICF-type model appears to be a powerful tool for the analysis of <i>S</i>(<i>T</i>) dependences in Ce-based FV compounds and alloys.
ISSN:2075-4701