Thermoelectric properties of selenospinel Cu 6Fe 4Sn 12Se 32

Koichiro Suekuni, Masaru Kunii, Hirotaka Nishiate, Michihiro Ohta, Atsushi Yamamoto, Mikio Koyano

研究成果: Contribution to journalArticle

3 被引用数 (Scopus)

抄録

This report describes thermoelectric properties up to 500 K for polycrystalline selenospinel Cu 6Fe 4Sn 12Se 32 samples. Thermal conductivity shows a low value of 1 W/Km because of their structural complexity such as Fe/Sn site disorder. Electrical resistivity ρ varies as exp(T 0/T 1/4) and thermopower S varies as T 1/2 at low temperatures, which indicates that Mott variable-range hopping is the dominant conduction mechanism. However, at high temperatures (above 350 K), ρ and S decrease simultaneously. The temperature dependences are attributed to the thermal excitation of electrons. The possible band structure for Cu 6Fe 4Sn 12Se 32 is examined to clarify the behavior of ρ and S.

本文言語英語
ページ(範囲)1130-1133
ページ数4
ジャーナルJournal of Electronic Materials
41
6
DOI
出版ステータス出版済み - 6 1 2012
外部発表はい

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

フィンガープリント 「Thermoelectric properties of selenospinel Cu <sub>6</sub>Fe <sub>4</sub>Sn <sub>12</sub>Se <sub>32</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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