主权项 |
1. An Mg—Si system thermoelectric conversion material expressed by: a chemical composition formula: Mg66.7-aSi33.3-bSbxZnyAz (A represents one or more types of elements selected from a group consisting of Al, Bi, P, Ga, As, In, Ag, Cu, Au, Ni, Fe, Mn, Co, Ta, Nd, Nb, and Pb. x, y, and z satisfy conditions of 0.1≦x≦3.0, 0.1≦y≦3.0, 0≦z≦3.0, and 0.2≦x+y+z≦5.0. a and b are positive numbers and satisfy a condition of a+b=x+y+z.). |