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High-Temperature Transport Properties of Yb4−xSmxSb3

Chamoire, Audrey and Gascoin, Franck and Estournès, Claude and Caillat, Thierry and Tédenac, Jean-Claude High-Temperature Transport Properties of Yb4−xSmxSb3. (2010) Journal of Electronic Materials, vol. 39 (n° 9). pp. 1579-1582. ISSN 0361-5235

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Official URL: http://dx.doi.org/10.1007/s11664-010-1274-5

Abstract

Polycrystalline L4Sb3 (L = La, Ce, Sm, and Yb) and Yb4−x Sm x Sb3, which crystallizes in the anti-Th3P4 structure type (I-43d no. 220), were synthesized via high-temperature reaction. Structural and chemical characterization were performed by x-ray diffraction and electronic microscopy with energy-dispersive x-ray analysis. Pucks were densified by spark plasma sintering. Transport property measurements showed that these compounds are n-type with low Seebeck coefficients, except for Yb4Sb3, which shows semimetallic behavior with hole conduction above 523 K. By partially substituting Yb by a trivalent rare earth we successfully improved the thermoelectric figure of merit of Yb4Sb3 up to 0.7 at 1273 K.

Item Type:Article
Additional Information:Thanks to Springer editor. The definitive version is available at http://www.springerlink.com/ The original PDF of the article can be found at Journal of Electronic Materials website :http://www.springerlink.com/content/0361-5235/
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Ecole Nationale Supérieure de Caen - ENSICAEN (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > National Aeronautics and Space Administration - NASA (USA)
Other partners > Ohio State University (USA)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université de Caen Basse-Normandie (FRANCE)
Other partners > Université de Montpellier 2 (FRANCE)
Other partners > California Institute of Technology - Caltech (USA)
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Deposited By: Leila Abdelouhab
Deposited On:17 May 2011 14:04

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