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
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

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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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 (pp. 103-106). [4133247] (International Conference on Thermoelectrics, ICT, Proceedings). https://doi.org/10.1109/ICT.2006.331291