Table 1 Unit-cell parameters and main interatomic distances in the Bi2−xSbxTe3 system from NPD data.
Bi2Te3 * | Bi SbTe3 | Bi0.5Sb1.5Te3 | Bi0.35Sb1.65Te3 | Sb2Te3 | |
|---|---|---|---|---|---|
a (Å) | 4.3859(2) | 4.3337(1) | 4.3008(1) | 4.2894(6) | 4.2673(2) |
c (Å) | 30.495(2) | 3.5052(2) | 30.5007(2) | 30.4795(1) | 30.451(2) |
V (Å3) | 508.03(5) | 496.21(4) | 488.59(4) | 485.67(3) | 480.21(4) |
Te1-Bi/Sb × 6 | 3.253(4) | 3.227(3) | 3.204(4) | 3.185(1) | 3.162(6) |
Te2-Bi/Sb ×3 | 3.061(5) | 3.024(4) | 3.000(4) | 2.999(1) | 2.995(6) |
Te2-Te2 × 3 | 3.660(6) | 3.678(4) | 3.706(4) | 3.717(3) | 3.715(5) |
Te2-Te2 × 6 inter-layer | 4.3859(1) | 4.3337(1) | 4.3008(1) | 4.289(6) | 4.2673(1) |
