Thermoelectric properties of hot-pressed boron suboxide (B6O)

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

Research output: Contribution to journalArticle

23 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 languageEnglish
Pages (from-to)1719-1723
Number of pages5
JournalMaterials Transactions
Volume43
Issue number7
DOIs
Publication statusPublished - 2002 Jul

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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