Ferropericlase
(Mg0.94Fe0.06)O (chemical formula (Mg0.941Fe0.058[]0.001)O)
finite strain (unspecified form) · Original · 2006
Why this differs from similar rows?
K'0S fit uses the entire high-pressure Brillouin data set to 20.2 GPa; sibling row instead restricts the fit to a hydrostatic subset up to 13.3 GPa.
V₀
—
Unknown basis
K₀
163
GPa
Adiabatic
K′
3.900
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| — | — | Unknown basis | — |
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 | 0.94 |
| FeO | 0.06 |
Formula: (Mg0.94Fe0.06)O
Conditions & method
- Tref
- —
- Pref
- 0.000 GPa
- Structure
- B1 rocksalt (Fm-3m)
- Method
- experiment (Brillouin / ultrasonic / elasticity)single-crystal Brillouin spectroscopy in diamond anvil cell to 20 GPa (methanol-ethanol-water medium)
- Sample
- Fp06 single crystal (same bulk sample as Jacobsen et al. [2002])
Source
- Paper
- Single‐crystal elasticity and sound velocities of (Mg0.94Fe0.06)O ferropericlas…
- Authors
- Jennifer M. Jackson; Stanislav Sinogeikin; Steven D. Jacobsen; H. J. Reichmann; S. J. Mackwell; Jay D. Bass
- DOI
- 10.1029/2005jb004052
- Year
- 2006
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
At room pressure, the adiabatic bulk (K0S) and shear (μ0S) moduli are K0S = 163 ± 3 GPa and μ0S = 121 ± 2 GPa... A fit to all our high-pressure Brillouin data using a third-order finite-strain equation of state yields the following pressure derivatives of the adiabatic bulk and shear moduli: K'0S = 3.9 ± 0.2 and μ'0S = 2.1 ± 0.1.
Additional notes
shear modulus mu0S
121 ± 2 GPa
mu0S prime
2.1 ± 0.1
lattice parameter a
4.2190 ± 0.0001 Å [Jacobsen et al., 2002]
ambient density
3.723 ± 0.008 g/cm3 [Jacobsen et al., 2002]
pressure range
to 20.2 GPa
note
Adiabatic moduli from Brillouin scattering, not static compression; included as finite-strain EOS fit for lower-mantle-relevant ferropericlase