“…Assuming one carrier type and parabolic bands in our analysis, carrier concentration ( n ) was calculated from the room temperature (i.e., well within a single‐carrier dominated transport) Hall constants using the relationship R H = 1/ ne , where R H is the Hall coefficient, n is the carrier concentration, and e is the electronic charge. Some physical properties of (Sn 1‐x Pb x ) 0.97 Cd 0.03 Te (0.10 ≤ x ≤ 0.87) in comparison with that of PbTe, SnTe17 and undoped Pb x Sn 1–x Te9, 19 are listed in Table 1 . The measured carrier concentration of p‐type Sn 0.61 Pb 0.36 Cd 0.03 Te is of the order of ∼10 19 cm −3 which is about one order of magnitude smaller than that of corresponding Sn 0.6 Pb 0.4 Te (p‐type: ∼10 20 cm −3 ).…”