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

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

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1130-1133
Number of pages4
JournalJournal of Electronic Materials
Volume41
Issue number6
DOIs
Publication statusPublished - Jun 1 2012
Externally publishedYes

Fingerprint

thermal conductivity
disorders
conduction
temperature dependence
electrical resistivity
excitation
electrons
Thermoelectric power
Band structure
Temperature
Thermal conductivity
Electrons
Hot Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Thermoelectric properties of selenospinel Cu 6Fe 4Sn 12Se 32 . / Suekuni, Koichiro; Kunii, Masaru; Nishiate, Hirotaka; Ohta, Michihiro; Yamamoto, Atsushi; Koyano, Mikio.

In: Journal of Electronic Materials, Vol. 41, No. 6, 01.06.2012, p. 1130-1133.

Research output: Contribution to journalArticle

Suekuni, K, Kunii, M, Nishiate, H, Ohta, M, Yamamoto, A & Koyano, M 2012, 'Thermoelectric properties of selenospinel Cu 6Fe 4Sn 12Se 32 ', Journal of Electronic Materials, vol. 41, no. 6, pp. 1130-1133. https://doi.org/10.1007/s11664-011-1842-3
Suekuni, Koichiro ; Kunii, Masaru ; Nishiate, Hirotaka ; Ohta, Michihiro ; Yamamoto, Atsushi ; Koyano, Mikio. / Thermoelectric properties of selenospinel Cu 6Fe 4Sn 12Se 32 In: Journal of Electronic Materials. 2012 ; Vol. 41, No. 6. pp. 1130-1133.
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