Thermoelectric properties of Ca3Co2O6 single crystal

Junichi Takahashi; Hisanori Yamane; Masahiko Shimada

doi:10.1143/jjap.43.l331

Thermoelectric properties of Ca₃Co₂O₆ single crystal

Junichi Takahashi, Hisanori Yamane, Masahiko Shimada

Division of Inorganic Material Research

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Single crystals of Ca₃Co₂O₆ were synthesized in a molten K₂CO₃ flux. Electric resistivity (ρ) and Seebeck coefficient (S) of the crystals were measured along the c axis direction of the Ca₃Co₂O₆ single crystal from room temperature to over 1000 K in air. The Ca₃Co ₂O₆ crystals showed p-type semiconducting behavior with ρ values of 2.0 Οcm at room temperature and 0.013 Οcm at 1000K. The S values were +165μV·K^-1 at 300K, +300μV·K^-1 at 440 K, and +169μV·K^-1 at 1000K. The power factor (S²ρ^-1) increased with temperature and attained 2.33 × 10^-4 W·m ^-1·K^-2 at 1000K.

Original language	English
Pages (from-to)	L331-L333
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	43
Issue number	3 A
DOIs	https://doi.org/10.1143/jjap.43.l331
Publication status	Published - 2004 Mar 1

Keywords

CaCoO
Electric conductivity
Power factor
Seebeck coefficient
Single crystal
Thermoelectric material

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/jjap.43.l331

Cite this

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abstract = "Single crystals of Ca3Co2O6 were synthesized in a molten K2CO3 flux. Electric resistivity (ρ) and Seebeck coefficient (S) of the crystals were measured along the c axis direction of the Ca3Co2O6 single crystal from room temperature to over 1000 K in air. The Ca3Co 2O6 crystals showed p-type semiconducting behavior with ρ values of 2.0 Οcm at room temperature and 0.013 Οcm at 1000K. The S values were +165μV·K-1 at 300K, +300μV·K-1 at 440 K, and +169μV·K-1 at 1000K. The power factor (S2ρ-1) increased with temperature and attained 2.33 × 10-4 W·m -1·K-2 at 1000K.",

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author = "Junichi Takahashi and Hisanori Yamane and Masahiko Shimada",

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AU - Takahashi, Junichi

AU - Yamane, Hisanori

AU - Shimada, Masahiko

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N2 - Single crystals of Ca3Co2O6 were synthesized in a molten K2CO3 flux. Electric resistivity (ρ) and Seebeck coefficient (S) of the crystals were measured along the c axis direction of the Ca3Co2O6 single crystal from room temperature to over 1000 K in air. The Ca3Co 2O6 crystals showed p-type semiconducting behavior with ρ values of 2.0 Οcm at room temperature and 0.013 Οcm at 1000K. The S values were +165μV·K-1 at 300K, +300μV·K-1 at 440 K, and +169μV·K-1 at 1000K. The power factor (S2ρ-1) increased with temperature and attained 2.33 × 10-4 W·m -1·K-2 at 1000K.

AB - Single crystals of Ca3Co2O6 were synthesized in a molten K2CO3 flux. Electric resistivity (ρ) and Seebeck coefficient (S) of the crystals were measured along the c axis direction of the Ca3Co2O6 single crystal from room temperature to over 1000 K in air. The Ca3Co 2O6 crystals showed p-type semiconducting behavior with ρ values of 2.0 Οcm at room temperature and 0.013 Οcm at 1000K. The S values were +165μV·K-1 at 300K, +300μV·K-1 at 440 K, and +169μV·K-1 at 1000K. The power factor (S2ρ-1) increased with temperature and attained 2.33 × 10-4 W·m -1·K-2 at 1000K.

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