Thermoelectric properties of Ba3 Co2 O6 (CO3)0.7 containing one-dimensional CoO6 octahedral columns

Kouta Iwasaki; Teruhisa Yamamoto; Hisanori Yamane; Takashi Takeda; Shigeo Arai; Hidetoshi Miyazaki; Kazuyoshi Tatsumi; Masahito Yoshino; Tsuyoshi Ito; Yuji Arita; Shunsuke Muto; Takanori Nagasaki; Tsuneo Matsui

doi:10.1063/1.3174428

Thermoelectric properties of Ba₃ Co₂ O₆ (CO₃)_0.7 containing one-dimensional CoO₆ octahedral columns

Kouta Iwasaki, Teruhisa Yamamoto, Hisanori Yamane, Takashi Takeda, Shigeo Arai, Hidetoshi Miyazaki, Kazuyoshi Tatsumi, Masahito Yoshino, Tsuyoshi Ito, Yuji Arita, Shunsuke Muto, Takanori Nagasaki, Tsuneo Matsui

Division of Inorganic Material Research

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

10 Citations (Scopus)

Abstract

The thermoelectric properties of Ba₃ Co₂ O ₆ (CO₃)_0.7 have been investigated using prismatic single crystals elongated along the c axis. Ba₃ Co ₂ O₆ (CO₃)_0.7 has a pseudo-one-dimensional structure similar to that of 2H perovskite-type BaCoO₃ and contains CoO₆ octahedral columns running parallel to the c axis. The prismatic crystals are grown by a flux method using a K₂ CO₃ - BaCl₂ flux. The electrical conductivity (σ) along the columns (c axis) exhibits a metallic behavior (670-320 S cm^-1 in the temperature range of 300-1100 K), whereas the temperature dependence of the electrical conductivity perpendicular to the c axis is semiconducting. The Seebeck coefficient (S) along the columns is positive and greater than 100 μV K-1 over the measured temperature range (116-128 μV K-1). Ba₃ Co₂ O₆ (CO ₃) _0.7 shows power factors (σ S²) of 5.5× 10^-4 -9.0× 10^-4 W m^-1 K ^-2 above room temperature, relatively high values for an oxide material.

Original language	English
Article number	034905
Journal	Journal of Applied Physics
Volume	106
Issue number	3
DOIs	https://doi.org/10.1063/1.3174428
Publication status	Published - 2009

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.3174428

Cite this

Thermoelectric properties of Ba₃ Co₂ O₆ (CO₃)_0.7 containing one-dimensional CoO₆ octahedral columns. / Iwasaki, Kouta; Yamamoto, Teruhisa; Yamane, Hisanori; Takeda, Takashi; Arai, Shigeo; Miyazaki, Hidetoshi; Tatsumi, Kazuyoshi; Yoshino, Masahito; Ito, Tsuyoshi; Arita, Yuji; Muto, Shunsuke; Nagasaki, Takanori; Matsui, Tsuneo.

In: Journal of Applied Physics, Vol. 106, No. 3, 034905, 2009.

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

Iwasaki, Kouta ; Yamamoto, Teruhisa ; Yamane, Hisanori ; Takeda, Takashi ; Arai, Shigeo ; Miyazaki, Hidetoshi ; Tatsumi, Kazuyoshi ; Yoshino, Masahito ; Ito, Tsuyoshi ; Arita, Yuji ; Muto, Shunsuke ; Nagasaki, Takanori ; Matsui, Tsuneo. / Thermoelectric properties of Ba₃ Co₂ O₆ (CO₃)_0.7 containing one-dimensional CoO₆ octahedral columns. In: Journal of Applied Physics. 2009 ; Vol. 106, No. 3.

@article{abda0bef361d43c5913095859c472b38,

title = "Thermoelectric properties of Ba3 Co2 O6 (CO3)0.7 containing one-dimensional CoO6 octahedral columns",

abstract = "The thermoelectric properties of Ba3 Co2 O 6 (CO3)0.7 have been investigated using prismatic single crystals elongated along the c axis. Ba3 Co 2 O6 (CO3)0.7 has a pseudo-one-dimensional structure similar to that of 2H perovskite-type BaCoO3 and contains CoO6 octahedral columns running parallel to the c axis. The prismatic crystals are grown by a flux method using a K2 CO3 - BaCl2 flux. The electrical conductivity (σ) along the columns (c axis) exhibits a metallic behavior (670-320 S cm-1 in the temperature range of 300-1100 K), whereas the temperature dependence of the electrical conductivity perpendicular to the c axis is semiconducting. The Seebeck coefficient (S) along the columns is positive and greater than 100 μV K-1 over the measured temperature range (116-128 μV K-1). Ba3 Co2 O6 (CO 3) 0.7 shows power factors (σ S2) of 5.5× 10-4 -9.0× 10-4 W m-1 K -2 above room temperature, relatively high values for an oxide material.",

author = "Kouta Iwasaki and Teruhisa Yamamoto and Hisanori Yamane and Takashi Takeda and Shigeo Arai and Hidetoshi Miyazaki and Kazuyoshi Tatsumi and Masahito Yoshino and Tsuyoshi Ito and Yuji Arita and Shunsuke Muto and Takanori Nagasaki and Tsuneo Matsui",

note = "Funding Information: This study was partly supported by Grant-in-Aid 20760465 from the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).",

year = "2009",

doi = "10.1063/1.3174428",

language = "English",

volume = "106",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

number = "3",

}

TY - JOUR

T1 - Thermoelectric properties of Ba3 Co2 O6 (CO3)0.7 containing one-dimensional CoO6 octahedral columns

AU - Iwasaki, Kouta

AU - Yamamoto, Teruhisa

AU - Yamane, Hisanori

AU - Takeda, Takashi

AU - Arai, Shigeo

AU - Miyazaki, Hidetoshi

AU - Tatsumi, Kazuyoshi

AU - Yoshino, Masahito

AU - Ito, Tsuyoshi

AU - Arita, Yuji

AU - Muto, Shunsuke

AU - Nagasaki, Takanori

AU - Matsui, Tsuneo

N1 - Funding Information: This study was partly supported by Grant-in-Aid 20760465 from the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).

PY - 2009

Y1 - 2009

N2 - The thermoelectric properties of Ba3 Co2 O 6 (CO3)0.7 have been investigated using prismatic single crystals elongated along the c axis. Ba3 Co 2 O6 (CO3)0.7 has a pseudo-one-dimensional structure similar to that of 2H perovskite-type BaCoO3 and contains CoO6 octahedral columns running parallel to the c axis. The prismatic crystals are grown by a flux method using a K2 CO3 - BaCl2 flux. The electrical conductivity (σ) along the columns (c axis) exhibits a metallic behavior (670-320 S cm-1 in the temperature range of 300-1100 K), whereas the temperature dependence of the electrical conductivity perpendicular to the c axis is semiconducting. The Seebeck coefficient (S) along the columns is positive and greater than 100 μV K-1 over the measured temperature range (116-128 μV K-1). Ba3 Co2 O6 (CO 3) 0.7 shows power factors (σ S2) of 5.5× 10-4 -9.0× 10-4 W m-1 K -2 above room temperature, relatively high values for an oxide material.

AB - The thermoelectric properties of Ba3 Co2 O 6 (CO3)0.7 have been investigated using prismatic single crystals elongated along the c axis. Ba3 Co 2 O6 (CO3)0.7 has a pseudo-one-dimensional structure similar to that of 2H perovskite-type BaCoO3 and contains CoO6 octahedral columns running parallel to the c axis. The prismatic crystals are grown by a flux method using a K2 CO3 - BaCl2 flux. The electrical conductivity (σ) along the columns (c axis) exhibits a metallic behavior (670-320 S cm-1 in the temperature range of 300-1100 K), whereas the temperature dependence of the electrical conductivity perpendicular to the c axis is semiconducting. The Seebeck coefficient (S) along the columns is positive and greater than 100 μV K-1 over the measured temperature range (116-128 μV K-1). Ba3 Co2 O6 (CO 3) 0.7 shows power factors (σ S2) of 5.5× 10-4 -9.0× 10-4 W m-1 K -2 above room temperature, relatively high values for an oxide material.

UR - http://www.scopus.com/inward/record.url?scp=69149099461&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=69149099461&partnerID=8YFLogxK

U2 - 10.1063/1.3174428

DO - 10.1063/1.3174428

M3 - Article

AN - SCOPUS:69149099461

VL - 106

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 3

M1 - 034905

ER -

Thermoelectric properties of Ba₃ Co₂ O₆ (CO₃)_0.7 containing one-dimensional CoO₆ octahedral columns

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this