fig5

Figure 5. (A) Density of states effective mass $$ m_{D}^{*} $$ as a function of temperature for the Mg_1.95Si_0.233Sn_0.7Sb_0.067-II sample. The effective mass was obtained from room temperature Hall measurement, assuming a constant carrier concentration; (B) Weighted mobility (μ_w) and Hall mobility (μ_H) of Mg_2.06Si_0.385Sn_0.6Sb_0.015 and Mg_1.95Si_0.233Sn_0.7Sb_0.067-II.