Thermoelectric properties of semi-metallic Ru2Sn3-δ with low thermal conductivity

Hideyuki Kawasoko, Tomohiro Takayama, Hidenori Takagi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Intermetallic Ru2Sn3-δ was found to show high thermoelectric performance of ZT ∼ 0.3 at temperatures around 660 K. The transport properties, combined with the electronic structure calculation, indicate that Ru2Sn3 is a semi-metal with contrasting dispersions between the hole and electron bands, which generate a large thermoelectric power of S ∼ 100 μuV/K. A low thermal conductivity κ of around 1Wm-1 K-1 was observed above room temperature, which is likely due to the strong lattice anharmonicity associated with the martensitic transformation.

Original languageEnglish
Number of pages1
JournalApplied Physics Express
Issue number11
Publication statusPublished - 2014 Nov 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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