Structural and thermoelectric properties of Cu6Fe 4Sn12Se32 single crystal

K. Suekuni, K. Tsuruta, H. Fukuoka, M. Koyano

研究成果: ジャーナルへの寄稿学術誌査読

14 被引用数 (Scopus)

抄録

We present structural and thermoelectric properties of quaternary selenide Cu6Fe4Sn12Se32 single crystal. Single crystal X-ray structural analysis revealed that Cu6Fe 4Sn12Se32 has the cubic thiospinel structure. Low-temperature logarithmic electrical resistivity ln ρ exhibits Mott's T-1/4 dependence, indicating that three-dimensional variable-range hopping (VRH) is the dominant electrical conduction mechanism. Furthermore, Efros' T-1/2 dependence of ln ρ appears below 30 K. Thermopower S varies as T1/2 at low temperatures, as expected for the VRH conduction, and reaches 150 μV/K at 300 K. Result of Hall measurement indicates that rather low ρ for a VRH conductor and the large S are attributed to high carrier density and large slope of electron density of states, respectively.

本文言語英語
ページ(範囲)91-94
ページ数4
ジャーナルJournal of Alloys and Compounds
564
DOI
出版ステータス出版済み - 7月 5 2013
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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