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

Hideyuki Kawasoko, Tomohiro Takayama, Hidenori Takagi

Research output: Contribution to journalArticlepeer-review

6 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
Pages (from-to)115801
Number of pages1
JournalApplied Physics Express
Issue number11
Publication statusPublished - 2014 Nov 1


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