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High-temperature thermoelectric properties of W-substituted CaMnO3

Published online by Cambridge University Press:  01 February 2013

Dimas S. Alfaruq ,
James Eilertsen ,
Philipp Thiel ,
Myriam H Aguirre ,
Eugenio Otal ,
Sascha Populoh ,
Songhak Yoon  and
Anke Weidenkaff
Dimas S. Alfaruq
Affiliation:
Empa, Solid State Chemistry and Catalysis, Ueberlandstrasse. 129, CH-8600 Duebendorf, Switzerland
James Eilertsen
Affiliation:
Empa, Solid State Chemistry and Catalysis, Ueberlandstrasse. 129, CH-8600 Duebendorf, Switzerland
Philipp Thiel
Affiliation:
Empa, Solid State Chemistry and Catalysis, Ueberlandstrasse. 129, CH-8600 Duebendorf, Switzerland
Myriam H Aguirre
Affiliation:
Empa, Solid State Chemistry and Catalysis, Ueberlandstrasse. 129, CH-8600 Duebendorf, Switzerland
Eugenio Otal
Affiliation:
Empa, Solid State Chemistry and Catalysis, Ueberlandstrasse. 129, CH-8600 Duebendorf, Switzerland
Sascha Populoh
Affiliation:
Empa, Solid State Chemistry and Catalysis, Ueberlandstrasse. 129, CH-8600 Duebendorf, Switzerland
Songhak Yoon
Affiliation:
Empa, Solid State Chemistry and Catalysis, Ueberlandstrasse. 129, CH-8600 Duebendorf, Switzerland
Anke Weidenkaff*
Affiliation:
Empa, Solid State Chemistry and Catalysis, Ueberlandstrasse. 129, CH-8600 Duebendorf, Switzerland
*
*Corresponding Author: [email protected]
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Abstract

The thermoelectric properties of W-substituted CaMn1-xWxO3-δ (x = 0.01, 0.03; 0.05) samples, prepared by soft chemistry, were investigated from 300 K to 1000 K and compared to Nb-substituted CaMn0.98Nb0.02O3-δ. All compositions exhibit both an increase in absolute Seebeck coefficient and electrical resistivity with temperature. Moreover, compared to the Nb-substituted sample, the thermal conductivity of the W-substituted samples was strongly reduced. This reduction is attributed to the nearly two times greater mass of tungsten. Consequently, a ZT of 0.19 was found in CaMn0.97W0.03O3-δ at 1000 K, which was larger than ZT exhibited by the 2% Nb-doped sample.

Keywords

thermoelectricityoxidex-ray diffraction (XRD)
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1490: Symposium B – Thermoelectric Materials Research and Device Development for Power Conversion and Refrigeration , 2013 , pp. 3 - 8
Copyright
Copyright © Materials Research Society 2013 

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References

Rowe, D. M. Thermoelectrics Handbook - Macro to Nano; CRC Press/Taylor & Francis Group: Boca Raton, 2006.Google Scholar
Funahashi, R.; Kosuga, A.; Miyasou, N.; Takeuchi, E.; Urata, S.; Lee, K.; Ohta, H.; Koumoto, K. Appl. Phys. Lett 2007, p 124.Google Scholar
Wang, Y.; Sui, Y.; Wang, X.; Su, W.; Liu, X.; Fan, H. J. Acta Mater. 2010, 58, 6306.CrossRefGoogle Scholar
Bocher, L.; Aguirre, M. H.; Logvinovich, D.; Shkabko, A.; Robert, R.; Trottmann, M.; Weidenkaff, A. Inorg. Chem. 2008, 47, 8077.CrossRefGoogle Scholar
Lebail, A.; Duroy, H.; Fourquet, J. L. Mater. Res. Bull. 1988, 23.Google Scholar
Rodriguez-Carvajal, , J. Physica B 1993, 192, 55.CrossRefGoogle Scholar
Poeppelmeier, K. R.; Leonowicz, M. E.; Scanlon, J. C.; Longo, J. M.; Yelon, W. B. Journal of Solid State Chem. 1982, 45.Google Scholar
Aguirre, M. H.; Canulescu, S.; Robert, R.; Homazava, N.; Logvinovich, D.; Bocher, L.; Lippert, T.; Dobeli, M.; Weidenkaff, A. J. Appl. Phys. 2008, 103, 013703.CrossRefGoogle Scholar
Aguirre, M.H., , D. L., Bocher, L., Robert, R., Ebbinghaus, S.G. and Weidenkaff, A. Acta Mater. 2008 57, 108.CrossRefGoogle Scholar
Zener, C. Phys. Rev. 1951, 82, 403.CrossRefGoogle Scholar
Raveau, B.; Zhao, Y. M.; Martin, C.; Hervieu, M.; Maignan, A. J. Solid State Chem. 2000, 149, 203.CrossRefGoogle Scholar
Horiguchi, K. I.; Teduka, Y.; Sugihara, S. Funtai Oyobi Fummatsu Yakin/ J. Japan Soc.. of Powder and Powder Metall. 2007, 54, 351.CrossRefGoogle Scholar
Wang, Y.; Sui, Y.; Fan, H.; Wang, X.; Su, Y.; Su, W.; Liu, X. Chem.Mater. 2009, 21, 4653.CrossRefGoogle Scholar
Maignan, A.; Martin, C.; Autret, C.; Hervieu, M.; Raveau, B.; Hejtmanek, J. J. Mater. Chem. 2002, 12, 1806.CrossRefGoogle Scholar