Table 2. Hyperfine Parameters of the Mössbauer Spectra of the Nanoparticles Synthesized at 230 °C.
| δ (mm/s) | ε (mm/s) | BHF (T) | W (mm/s) | area per Fe site (%) | area per phase (%) | |
|---|---|---|---|---|---|---|
| doublet | 0.25 | 1.01 | 0.40 | 38 | ||
| Fe5C2 | 0.22 | 0.04 | 17.7 | 0.30 | 18 | 46 |
| 0.26 | 0.04 | 22.3 | 0.30 | 18 | ||
| 0.19 | 0.03 | 13.5 | 0.25 | 10 | ||
| magnetite | 0.29 | –0.06 | 49.5 | 0.20 | 10 | 16 |