Effect of the Yb substitutions on the thermoelectric properties of CaMnO3

D. Flahaut, R. Funahashi, K. Lee, H. Ohta, K. Koumoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

Ca1-xYbxMnO3 (x = 0-0.5) samples were prepared via solid state reaction in air. Electrical and thermoelectric properties have been investigated up to 1000K. The measurements reveal that the resistivity values are strongly affected by the charge carrier content and the octahedral distortion. The lowest p reaches 3mΩ.cm for x=0.15. Whereas the Seebeck coefficient depends only on the charge carrier concentration, the thermal conductivity of Ca1-xYbxMnO3 is mainly governed by the mass difference between the Yb and Ca cations. The best ZT value, ZT=0.2, is obtained for x=0.05 at 1000K and demonstrates the good potentialities of these oxides as high temperature thermoelectric material.

Original languageEnglish
Title of host publicationProceedings ICT'06 - 25th International Conference on Thermoelectrics
Pages103-106
Number of pages4
DOIs
Publication statusPublished - 2006 Dec 1
EventICT'06 - 25th International Conference on Thermoelectrics - Vienna, Austria
Duration: 2006 Aug 62006 Aug 10

Publication series

NameInternational Conference on Thermoelectrics, ICT, Proceedings

Other

OtherICT'06 - 25th International Conference on Thermoelectrics
CountryAustria
CityVienna
Period06/8/606/8/10

Fingerprint

Charge carriers
Substitution reactions
Seebeck coefficient
Solid state reactions
Carrier concentration
Thermal conductivity
Positive ions
Oxides
Air
Temperature

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Flahaut, D., Funahashi, R., Lee, K., Ohta, H., & Koumoto, K. (2006). Effect of the Yb substitutions on the thermoelectric properties of CaMnO3. In Proceedings ICT'06 - 25th International Conference on Thermoelectrics (pp. 103-106). [4133247] (International Conference on Thermoelectrics, ICT, Proceedings). https://doi.org/10.1109/ICT.2006.331291
Flahaut, D. ; Funahashi, R. ; Lee, K. ; Ohta, H. ; Koumoto, K. / Effect of the Yb substitutions on the thermoelectric properties of CaMnO3. Proceedings ICT'06 - 25th International Conference on Thermoelectrics. 2006. pp. 103-106 (International Conference on Thermoelectrics, ICT, Proceedings).
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Flahaut, D, Funahashi, R, Lee, K, Ohta, H & Koumoto, K 2006, Effect of the Yb substitutions on the thermoelectric properties of CaMnO3. in Proceedings ICT'06 - 25th International Conference on Thermoelectrics., 4133247, International Conference on Thermoelectrics, ICT, Proceedings, pp. 103-106, ICT'06 - 25th International Conference on Thermoelectrics, Vienna, Austria, 06/8/6. https://doi.org/10.1109/ICT.2006.331291

Effect of the Yb substitutions on the thermoelectric properties of CaMnO3. / Flahaut, D.; Funahashi, R.; Lee, K.; Ohta, H.; Koumoto, K.

Proceedings ICT'06 - 25th International Conference on Thermoelectrics. 2006. p. 103-106 4133247 (International Conference on Thermoelectrics, ICT, Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Flahaut D, Funahashi R, Lee K, Ohta H, Koumoto K. Effect of the Yb substitutions on the thermoelectric properties of CaMnO3. In Proceedings ICT'06 - 25th International Conference on Thermoelectrics. 2006. p. 103-106. 4133247. (International Conference on Thermoelectrics, ICT, Proceedings). https://doi.org/10.1109/ICT.2006.331291