Patent ID: 8203067

Claim:
A nitride thermoelectric material which has an element composition represented by formula (B): Al z Ga y In x M u R v D w N m (B) wherein M represents a transition element; R represents a rare earth element; D represents at least one element selected from elements of Group IV or II; 0≦z≦0.7, 0≦y≦0.7, 0.2≦x≦1.0, 0≦u≦0.7, 0≦v≦0.05, 0≦w≦0.2, and 0.9≦m≦1.1; at least one of u, v, and w is greater than 0; and x+y+z=1, and has an absolute value of a Seebeck coefficient of 50 μV/k or more at a temperature of 100° C. or more, and an electrical resistivity of 10 −3 Ωm or less.