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The effective force constants k SP (spin-phonon coupling) and k OSP (orbital-spin-phonon coupling) of the A g(2), A g(3) and B 1g(1) Raman-active modes in LaMnO 3 27, PrMnO 3 and NdMnO 3.
| Compounds/modes | kSP (dynes/cm) | kOSP (dynes/cm) | kOSP/kSP (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Modes | Ag(2) | Ag(3) | B1g(1) | Ag(2) | Ag(3) | B1g(1) | Ag(2) | Ag(3) | B1g(1) |
| LaMnO 3 27 | — | 1000 | — | — | 70 | — | — | 7.0 | — |
| PrMnO 3 | 651 | 865 | 2622 | 54 | 66 | 61 | 8.2 | 7.6 | 2.3 |
| NdMnO 3 | 193 | 655 | 2413 | 20 | 51 | 25 | 10.3 | 7.7 | 1.0 |
