| Abstract Scope |
High-entropy-alloys (HEAs) have attracted much attention in the fields of materials science and engineering because of their tunable properties as structural materials. HEAs are the alloys with 5 or more constituent elements and a 5–35% occupancy of each element. Introduction of large disturbances and strains due to the multiple elements solid solution is the core of excellent mechanical performances. Even in thermoelectric materials, it is expected that the lattice thermal conductivity (kL) will be reduced by introducing HEA concept. Based on these expectation, we have been developing various new High-entropy(HE)-type thermoelectric materials such as AgBiSe2, GeTe, CoSb3, and so on. Recently, we succeeded in stabilizing the cubic crystal structure and enhancing the thermoelectric proprties of AgBiSe2. We will talk details of the development of HE-type thermoelectric materials. |