fig7

Figure 7. Thermoelectric properties of Mg_2.3-yZn_0.8Cu_ySb₂ (y = 0, 0.075, 0.100, and 0.125). Temperature-dependent (A) σ and (B) S; y-dependent (C) n (red) and μ (blue) at room temperature; temperature-dependent (D) PF; (E) D; (F) κ; (G) κ_ele; (H) κ_latt, and (I) ZT. PF: Power factor; ZT: dimensionless figure of merit; D: thermal diffusivity; κ: total thermal conductivity; κ_ele: electronic thermal conductivity; κ_latt: lattice thermal conductivity.