Thermoelectric properties of layered perovskite-type Nb-doped SrO(SrTiO3)n (n = 1, 2) Ruddlesden-Popper phases

K. H. Lee, H. Ohta, K. Koumoto

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

4 Citations (Scopus)

Abstract

Thermoelectric (TE) properties of natural superlattice Ruddlesden-Popper (RP) phases were measured to elucidate their potential as TE materials, and the origin of the TE properties was discussed from the viewpoint of the shape of the TiO6 octahedron. Compared with the cubic perovskite-type phase Nb-doped SrTiO3, efficient reduction of the lattice thermal conductivity was observed by more than 50% at room temperature and 30% at 1000 K. There was a decrease in electrical conductivity owing to the randomly distributed insulating SrO layers in polycrystalline RP phases, and it was found that large TE power can be obtained in conjunction with high symmetry TiO 6 octahedra.

Original languageEnglish
Title of host publicationProceedings ICT'06 - 25th International Conference on Thermoelectrics
Pages81-84
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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