Wüstite
Fe0.93O
third-order Birch-Murnaghan · Original · 2005
Why this differs from similar rows?
This study's fit for the rhombohedral high-pressure phase, using only the 28-51 GPa range (a different phase and pressure range than the cubic-phase sibling row).
V₀
51.28
ų
Unit cell
K₀
238
GPa
Isothermal
K′
3.500
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 51.28 | 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
- 28 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
Setting P28 GPa as the reference pressure and fitting our experimental data between 28 and 51 GPa, we obtain equation-of-state parameters V28 GPa = 51.28 (±0.03) Å3 and K28 GPa = 238 (±4) GPa, with K'28 GPa = 3.5 (fixed).
Additional notes
P range GPa
28-51
note
Fitted volume at 28 GPa in excellent agreement with experimental value 51.27 (±0.02) Å3 at 27.7 GPa