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Table 1
Comparison of the fitting parameters of corundum for the Eu-type modes (E⊥c) at different temperatures.
| j | T(K) | ΩTOj | γ TOj | ΩLOj | γLOj | ϵ∞ |
| (cm-1) | (cm-1) | (cm-1) | (cm-1) | |||
|
|
||||||
| 1 | 300 | 384.02 | 6.03 | 387.46 | 5.18 | 3.05 |
| 551 | 380.83 | 6.13 | 383.22 | 6.55 | 3.06 | |
| 738 | 379.9 | 9.86 | 382.36 | 8.56 | 3.08 | |
| 928 | 377.51 | 10.97 | 379.8 | 10.1 | 3.1 | |
| 2 | 300 | 439.22 | 3.23 | 481.96 | 2.96 | − |
| 551 | 436 | 7.51 | 477.49 | 3.86 | ||
| 738 | 432.94 | 8.19 | 474.39 | 6.99 | ||
| 928 | 430.21 | 10.49 | 471.18 | 10.15 | ||
| 3 | 300 | 569.35 | 7.86 | 908.23 | 22.37 | − |
| 551 | 564.42 | 8.89 | 901.64 | 27.84 | ||
| 738 | 560.1 | 10.24 | 898.5 | 36.78 | ||
| 928 | 555.46 | 14.82 | 894.5 | 45.36 | ||
| 4 | 300 | 634.36 | 5.6 | 630.59 | 8.53 | − |
| 551 | 628.8 | 8.13 | 624.95 | 11.37 | ||
| 738 | 624.51 | 10.8 | 620.9 | 14.32 | ||
| 928 | 619.99 | 14.21 | 616.66 | 17.55 | ||
Notes.The definition of the parameters refers to Eq. (3).
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