Ferropericlase
(Mg0.725Fe0.268□0.007)O (Fe27)
third-order Birch-Murnaghan · Original · 2002
V₀
76.336
ų
Unit cell
K₀
158.400
GPa
Isothermal
K′
5.490
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 76.336 | 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 | 0.725 |
| FeO | 0.268 |
Formula: (Mg0.725Fe0.268□0.007)O
Conditions & method
- Tref
- —
- Pref
- 0.000 GPa
- Structure
- B1 rocksalt (Fm-3m)
- Method
- experiment (XRD / DAC / multianvil compression)single-crystal X-ray diffraction in diamond anvil cell (quartz internal pressure standard), static compression to 9.3 GPa
- Sample
- Fe27 single crystal, ΣFe/(ΣFe+Mg) = 0.270(3), Fe3+/ΣFe = 0.05(3)
Source
- Paper
- Structure and elasticity of single‐crystal (Mg,Fe)O and a new method of generat…
- Authors
- Steven D. Jacobsen; Hans‐J. Reichmann; H. Spetzler; S. J. Mackwell; Joseph R. Smyth; R. J. Angel; Catherine McCammon
- DOI
- 10.1029/2001jb000490
- Year
- 2002
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
The compression data were fit to a three-parameter (V0, K0T, K'), error-weighted third-order Birch-Murnaghan equation of state [Birch, 1978] using the EoSFIT program [Angel, 2000]. The EoS results are for Fe27 (Mg0.725Fe0.268□0.007O); V0 = 76.336(2) Å3, K0T = 158.4(4) GPa, and K' = 5.49(11).
Additional notes
experimental zero pressure volume
76.335(3) Å3 (measured in DAC without pressure fluid; agrees with fitted V0 within one standard deviation)
max pressure
9.3 GPa (10 P-V data)
ambient cell parameter Table1
a = 4.2421(1) Å