Patent ID: 7851692

Claim:
A thermoelectric material comprising a composition expressed by a composition formula: (Ti p Hf q Zr 1-p-q ) x Co y (Sb 1-r Sn r ) 100-x-y where, p is a value satisfying 0.2≦p≦0.3, q is a value satisfying 0.2≦q≦0.3, r is a value satisfying 0.1<r≦0.8, x is a value satisfying 30≦x≦35 atomic %, and y is a value satisfying 30≦y≦35 atomic %, wherein the thermoelectric material includes a phase having an MgAgAs crystal structure as a main phase, and has a Seebeck coefficient α at 700K of 290 μV/K or more and an electric resistivity ρ at 700K of 2.8 mΩcm or less.