Wüstite
Fe0.93O
third-order Birch-Murnaghan · Original · 2005
Why this differs from similar rows?
Rhombohedral-phase parameters back-calculated to zero pressure from a fit referenced to 28 GPa, a different approach than the direct ambient-pressure fits in sibling rows.
V₀
59.85
ų
Unit cell
K₀
132
GPa
Isothermal
K′
4.200
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 59.85 | ų | Unit cell | — |
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 | 0.93 |
Formula: Fe0.93O
Conditions & method
- Tref
- 300 K
- Pref
- 0.000 GPa
- Structure
- B1 rocksalt (Fm-3m)
- Method
- experiment (XRD / DAC / multianvil compression)single-crystal synchrotron X-ray diffraction, diamond-anvil cell, helium pressure medium, ruby fluorescence pressure scale
- Sample
- same single crystal as cubic Fe0.93O, high-pressure phase above 23 GPa
Source
- Paper
- Single-crystal synchrotron X-ray diffraction study of wüstite and magnesiowüsti…
- Authors
- Steven D. Jacobsen; Jung‐Fu Lin; R. J. Angel; Guoyin Shen; Vitali B. Prakapenka; Przemysław Dera; Ho-kwang Mao; Russell J. Hemley
- DOI
- 10.1107/s0909049505022326
- Year
- 2005
- Journal
- Journal of Synchrotron Radiation
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
The rhombohedral phase equation-of-state parameters obtained by directly fitting the high-pressure data with a reference pressure of 28 GPa correspond to V0 = 59.85, K0 = 132 GPa and K' = 4.2.
Additional notes
derivation
back-calculated zero-pressure parameters from 28 GPa reference-pressure fit