Ferropericlase
(Mg0.73Fe0.27)O
third-order Birch-Murnaghan · Original · 2005
V₀
77.3
ų
Unit cell
K₀
154
GPa
Isothermal
K′
4
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 77.3 | 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 | 0.73 |
| FeO | 0.27 |
Formula: (Mg0.73Fe0.27)O
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
- sample Fe27, single crystal synthesized by interdiffusion, a0 = 4.2599 (3) Å
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 fitted equation-of-state parameters for this composition are V0 = 77.30 (±0.09) Å3, K0 = 154 (±3) GPa and K' = 4.0 (±0.1). Table 2: (Mg0.73Fe0.27)O, P range 0–51, V0 77.30 (±0.09), K0 154 (±3), K' 4.0 (±0.1), This study.
Additional notes
P range GPa
0-51
rho0 g cm3
4.195 (±0.005)
F f plot V0
V0 = 77.30 ± 0.02 Å3 determined experimentally per Fig. 7 caption
note
No rhombohedral distortion observed to 51 GPa; composition stated as relevant to Earth's lower mantle