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High‐temperature thermoelectric properties of p‐type skutterudites Yb x Co 3 FeSb 12
Author(s) -
Dong Yongkwan,
Puneet Pooja,
Tritt Terry M.,
Nolas George S.
Publication year - 2013
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201307126
Subject(s) - thermoelectric effect , thermoelectric materials , seebeck coefficient , electrical resistivity and conductivity , materials science , rietveld refinement , crystallite , thermal conductivity , analytical chemistry (journal) , metallurgy , crystal structure , chemistry , thermodynamics , crystallography , physics , composite material , quantum mechanics , chromatography
Partially filled polycrystalline p‐type skutterudites of nominal compositions Yb x Co 3 FeSb 12 were synthesized and their thermoelectric properties characterized. The compositions and filling fractions were confirmed with a combination of Rietveld refinement and elemental analysis. The thermoelectric properties were evaluated from 300 K to 810 K. The Seebeck coefficient and resistivity increase while the thermal conductivity decreases with increasing Yb content. A maximum ZT value of 0.85 was obtained at 810 K. This work is part of a continuing effort to enhance the thermoelectric properties of p‐type skutterudites, as this class of materials continues to be of interest for thermoelectrics applications. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)