Ferropericlase
(Mg0.22Fe0.78)O
third-order Birch-Murnaghan · Original · 2017
Why this differs from similar rows?
Refit of powder XRD data from Zhuravlev et al. (2010) in neon medium (7.9-39.8 GPa), a different original dataset/technique (powder vs. single-crystal) than the other rows.
V₀
78.5
ų
Unit cell
K₀
166
GPa
Isothermal
K′
4.010
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 78.5 | 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 |
|---|---|
| MgO | 0.22 |
| FeO | 0.78 |
Formula: (Mg0.22Fe0.78)O
Conditions & method
- Tref
- 300 K
- Pref
- —
- Structure
- B1 rocksalt (Fm-3m)
- Method
- experiment (XRD / DAC / multianvil compression)powder X-ray diffraction (PXRD), Ne pressure medium
- Sample
- powder in neon medium (data from Zhuravlev et al. 2010, re-fit in this study)
Source
- Paper
- Single-crystal equations of state of magnesiowüstite at high pressures
- Authors
- Gregory J. Finkelstein; Jennifer M. Jackson; W. Sturhahn; Dongzhou Zhang; E. Ercan; T. S. Toellner
- DOI
- 10.2138/am-2017-5966
- Year
- 2017
- Journal
- American Mineralogist
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
V0, K0T, and K'0T values of 78.5(2) Å3, 166(5) GPa, and 4.01(10) for the cubic-indexed powdered Mw78 in neon. Table 3: Zhuravlev et al. (2010), Neon, PXRD, 7.9-39.8 GPa.
Additional notes
P range GPa
7.9-39.8
data source
Zhuravlev et al. (2010)
Kp prior
Prior of K'0T = 4.0 ± 0.1 used during equation of state fit (no data near zero pressure)