Thermoelectric properties of hot-pressed boron suboxide (B6O)

Takaya Akashi; Tsuyoshi Itoh; Itaru Gunjishima; Hiroshi Masumoto; Takashi Goto

doi:10.2320/matertrans.43.1719

Thermoelectric properties of hot-pressed boron suboxide (B₆O)

Takaya Akashi, Tsuyoshi Itoh, Itaru Gunjishima, Hiroshi Masumoto, Takashi Goto

FRIS - Advanced Interdisciplinary Research Division

Tohoku University

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

29 Citations (Scopus)

Abstract

Boron suboxide (B₆O) sintered bodies were prepared by a solid state reaction and a hot pressing method. The thermoelectric properties of B₆O were compared with those of B₄C. The electrical conductivity was smaller than that of B₄C, and the Seebeck coefficient was twice as large as that of B₄C indicating p-type conduction. The hopping conduction of electronic charge carders was suggested from the temperature dependencies of the electrical conductivity and mobility. The thermal conductivity was greater than that of B₄C. The thermoelectric dimensionless figure-of-merit increased with increasing temperature, and was 0.62 × 10^-3 at 1000 K. This value was almost in agreement with that of B₄C.

Original language	English
Pages (from-to)	1719-1723
Number of pages	5
Journal	Materials Transactions
Volume	43
Issue number	7
DOIs	https://doi.org/10.2320/matertrans.43.1719
Publication status	Published - 2002 Jul

Keywords

Boron suboxide
Electrical conductivity
Ichosahedral structure
Seebeck coefficient
Thermal conductivity
Thermoelectric property

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10.2320/matertrans.43.1719

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abstract = "Boron suboxide (B6O) sintered bodies were prepared by a solid state reaction and a hot pressing method. The thermoelectric properties of B6O were compared with those of B4C. The electrical conductivity was smaller than that of B4C, and the Seebeck coefficient was twice as large as that of B4C indicating p-type conduction. The hopping conduction of electronic charge carders was suggested from the temperature dependencies of the electrical conductivity and mobility. The thermal conductivity was greater than that of B4C. The thermoelectric dimensionless figure-of-merit increased with increasing temperature, and was 0.62 × 10-3 at 1000 K. This value was almost in agreement with that of B4C.",

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AU - Akashi, Takaya

AU - Itoh, Tsuyoshi

AU - Gunjishima, Itaru

AU - Masumoto, Hiroshi

AU - Goto, Takashi

PY - 2002/7

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N2 - Boron suboxide (B6O) sintered bodies were prepared by a solid state reaction and a hot pressing method. The thermoelectric properties of B6O were compared with those of B4C. The electrical conductivity was smaller than that of B4C, and the Seebeck coefficient was twice as large as that of B4C indicating p-type conduction. The hopping conduction of electronic charge carders was suggested from the temperature dependencies of the electrical conductivity and mobility. The thermal conductivity was greater than that of B4C. The thermoelectric dimensionless figure-of-merit increased with increasing temperature, and was 0.62 × 10-3 at 1000 K. This value was almost in agreement with that of B4C.

AB - Boron suboxide (B6O) sintered bodies were prepared by a solid state reaction and a hot pressing method. The thermoelectric properties of B6O were compared with those of B4C. The electrical conductivity was smaller than that of B4C, and the Seebeck coefficient was twice as large as that of B4C indicating p-type conduction. The hopping conduction of electronic charge carders was suggested from the temperature dependencies of the electrical conductivity and mobility. The thermal conductivity was greater than that of B4C. The thermoelectric dimensionless figure-of-merit increased with increasing temperature, and was 0.62 × 10-3 at 1000 K. This value was almost in agreement with that of B4C.

KW - Boron suboxide

KW - Electrical conductivity

KW - Ichosahedral structure

KW - Seebeck coefficient

KW - Thermal conductivity

KW - Thermoelectric property

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Thermoelectric properties of hot-pressed boron suboxide (B₆O)

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Keywords

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