Table 5 Parameters of the IR-Active Modes for the Four-Parameter Model.
From: Structure, Intrinsic properties and Vibrational Spectra of Pr(Mg1/2Sn1/2)O3 Ceramic Crystal
Number | modes | Ωcal (cm−1) | ΩjTO (cm−1) | γjTO (cm−1) | ΩjLO (cm−1) | γjLO (cm−1) | Δεj | tanδj/ω (10−4cm) |
|---|---|---|---|---|---|---|---|---|
1 | F 1 u (1) | 108 | 114.79 | 17.88 | 115.56 | 12.58 | 0.24 | 0.236 |
2 | F 2 u (2) | 161 | 176.28 | 80.69 | 199.48 | 11.99 | 4.73 | 8.962 |
3 | F 3 u (3) | 216 | 206.00 | 21.09 | 220.10 | 46.53 | 0.41 | 0.147 |
4 | F 4 u (4) | 284 | 281.25 | 39.02 | 299.37 | 42.89 | 1.10 | 0.396 |
5 | F 5 u (5) | 398 | 387.85 | 68.23 | 411.66 | 35.07 | 2.28 | 0.755 |
6 | F 6 u (6) | 438 | 417.94 | 41.47 | 506.73 | 49.72 | 0.46 | 0.079 |
7 | F 7 u (7) | 623 | 606.14 | 54.47 | 665.02 | 36.90 | 0.40 | 0.043 |
