Wüstite
Fe0.99O
third-order Birch-Murnaghan · Original · 2000
Why this differs from similar rows?
Fit to Fe0.99O data using all points P<14 GPa; sibling row instead excludes data above 6 GPa, giving a lower K0 (150 vs 161 GPa here).
V₀
—
Unknown basis
K₀
161
GPa
Unknown
K′
—
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| — | — | Unknown basis | — |
Reported value and unit are preserved as extracted. Z (formula units per cell) is not stored yet, so molar ↔ ų/f.u. conversion is not applied automatically.
Composition
| Oxide | Molar |
|---|---|
| FeO | 0.99 |
Formula: Fe0.99O
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- B1 rocksalt (Fm-3m)
- Method
- experiment (XRD / DAC / multianvil compression)high-pressure synchrotron powder X-ray diffraction in diamond anvil cell (N2 pressure medium)
- Sample
- two-phase sample of nearly stoichiometric wüstite (Fe0.99O) and metastable iron-rich magnetite (wüstite:magnetite ≈ 9); volumes from (200) reflection; all data P < 14 GPa
Source
- Paper
- Effect of defect clustering on the high-pressure behaviour of wüstite. High-pre…
- Authors
- Camilla Haavik; Svein Stølen; Michael Hanfland; C. Richard A. Catlow
- DOI
- 10.1039/b006026g
- Year
- 2000
- Journal
- Physical Chemistry Chemical Physics
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
The bulk modulus of Fe0.99O is 161 ± 10 GPa when using all data for P < 14 GPa, while it is 150 ± 10 GPa when the data points for P > 6 GPa are not included in the analysis.
Additional notes
ambient lattice parameter
432.6 ± 0.2 pm at ambient conditions
Kp note
K0' fixed to 4 was stated explicitly for the Fe0.925O analysis; same BM3 treatment implied for Fe0.99O but not explicitly restated