Table 1.
Parameters deduced from Mössbauer spectra measured in Bappl = 0 and 8 T: isomer shift (IS), hyperfine field in no applied field (Bhf), hyperfine field in applied field (Beff); canting angle θ for A and B sites, ratio between the relative resonant area of the A and B sextets (XA/XB).
| Bappl (T) | Site | IS (mm/s) | Bhf (T) | Beff (T) | θ (°) | XA/XB |
|---|---|---|---|---|---|---|
| 0 | Fe(A) | 0.40 ± 0.02 | 50.7 ± 0.1 | - | - | 0.57 ± 0.03 |
| Fe(B) | 0.57 ± 0.03 | 50.0 ± 0.1 | - | - | ||
| 8 | Fe(A) | 0.41 ± 0.01 | - | 57.4 ± 0.1 | 36 ± 2 | 0.57 ± 0.02 |
| Fe(B) | 0.51 ± 0.03 | - | 44.7 ± 0.1 | 45 ± 2 |