Work

Thermoelectric properties of semi-metallic Ru 2 Sn 3−δ with low thermal conductivity

Year: 2014

Type: article

Abstract: Intermetallic Ru 2 Sn 3−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 Ru 2 Sn 3 is a semi-metal with contrasting dispersions between the hole and electron bands, which generate a large thermoelectric power of S ∼ 100 µV/K. A low thermal conductivity κ of around 1 W m −1 K −1 was observed above room temperature, which is likely due to the strong lattice anharmonicity associated with the martensitic transformation.

Source: Applied Physics Express

DOI: 10.7567/apex.7.115801

Authors: Hideyuki Kawasoko, Tomohiro Takayama, Hidenori Takagi

Institutions: The University of Tokyo, Max Planck Institute for Solid State Research

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funder: Japan Society for the Promotion of Science

Award: Strong spin-orbit interaction and novel electronic phases in heavy 5d transition metal oxides