Effect of 3d-transition metal substitution on the thermoelectric properties of the misfit-layered cobalt oxide [Ca2CoO3]pCoO2

Yuzuru Miyazaki, Y. Suzuki, T. Miura, Y. Ono, T. Kajitani

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

5 Citations (Scopus)

Abstract

The 3d-transition metal (M) substitution has been performed on the cobalt site in the rock-salt (RS)-type [Ca2CoO3] subsystem of misfit-layered cobalt oxide [Ca2(Co1-xMx)O3]pCoO2. Except for M = V, Ni and Zn, the solid solution has been prepared up to x ∼ 0.10, when the mixed powders of starting materials were sintered at 1193 K. The Cu-substituted samples exhibit larger thermoelectric power (S) and lower resistivity (ρ) relative to the non-doped one. For example, the sample with x = 0.10 shows S = 160 μVK-1 and ρ = 9.1 mΩcm at 290 K and the resulting thermoelectric power factor reaches S2/ρ = 2.8 × 10-4 Wm-1K-2, being almost twice larger than that of [Ca2CoO3]pCoO2.

Original languageEnglish
Title of host publicationProceedings ICT 2003 - 22nd International Conference on Thermoelectrics
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages203-206
Number of pages4
ISBN (Electronic)078038301X
DOIs
Publication statusPublished - 2003 Jan 1
Event22nd International Conference on Thermoelectrics, ICT 2003 - La Grande Motte, France
Duration: 2003 Aug 172003 Aug 21

Publication series

NameInternational Conference on Thermoelectrics, ICT, Proceedings
Volume2003-January

Other

Other22nd International Conference on Thermoelectrics, ICT 2003
CountryFrance
CityLa Grande Motte
Period03/8/1703/8/21

Keywords

  • Cobalt
  • Electric resistance
  • Powders
  • Reactive power
  • Solids
  • Tellurium
  • Temperature measurement
  • Thermal conductivity
  • Thermoelectricity
  • X-ray scattering

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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  • Cite this

    Miyazaki, Y., Suzuki, Y., Miura, T., Ono, Y., & Kajitani, T. (2003). Effect of 3d-transition metal substitution on the thermoelectric properties of the misfit-layered cobalt oxide [Ca2CoO3]pCoO2 In Proceedings ICT 2003 - 22nd International Conference on Thermoelectrics (pp. 203-206). [1287484] (International Conference on Thermoelectrics, ICT, Proceedings; Vol. 2003-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICT.2003.1287484