Amplitudes of the modes (in \AA) of the irreps taking part in the symmetry breaking from F m \overline{3} m space group to the monoclinic space groups P 2_{1} / n and I 2 / m for \mathrm{Sr}_{2} \mathrm{Co}_{1-x} \mathrm{Mg}_{x} \mathrm{TeO}_{6}(x=0.0,0.1,0.2,0.5) compounds at room-temperature after the refinement of (a) all modes and (b) only the effectively acting mode-amplitudes.
| Irrep | Amplitude | |||||||
|---|---|---|---|---|---|---|---|---|
| \mathrm{Sr}_{2} \mathrm{CoTeO}_{6} | \mathrm{Sr}_{2} \mathrm{Co}_{0.9} \mathrm{Mg}_{0.1} \mathrm{TeO}_{6} | \mathrm{Sr}_{2} \mathrm{Co}_{0.8} \mathrm{Mg}_{0.2} \mathrm{TeO}_{6} | \mathrm{Sr}_{2} \mathrm{Co}_{0.5} \mathrm{Mg}_{0.5} \mathrm{TeO}_{6} | |||||
| P 2_{1} / n-NPD | P 2_{1} / n-NPD | I2/m-XRPD | I2/m-XRPD | |||||
| (a) | (b) | (a) | (b) | (a) | (b) | (a) | (b) | |
| \mathrm{GM}_{1}^{+} | 0.1825(4) | 0.1840(1) | 0.1833(4) | 0.1881(4) | 0.0622(3) | 0.0000 | 0.1102(3) | 0.0000 |
| \mathrm{GM}_{3}^{+} | 0.0173(2) | 0.0000 | 0.0007(1) | 0.0000 | 0.0943(1) | 0.0000 | 0.0075(6) | 0.0000 |
| \mathrm{GM}_{4}^{+} | 0.7941(1) | 0.7964(5) | 0.7770(1) | 0.7814(2) | 0.5741(3) | 0.6742(3) | 0.6174(6) | 0.6680(6) |
| \mathrm{GM}_{5}^{+} | 0.0230(1) | 0.0000 | 0.0630(1) | 0.0000 | 0.0765(5) | 0.0000 | 0.0866(5) | 0.0000 |
| \mathrm{X}_{2}^{+} | 0.0074(5) | 0.0000 | 0.0165(5) | 0.0000 | ||||
| \mathrm{X}_{3}^{+} | 0.2680(1) | 0.2648(6) | 0.1737(5) | 0.1863(2) | ||||
| \mathrm{X}_{5}^{+} | 0.0032(2) | 0.0037(1) | 0.0469(5) | 0.0263(4) |