Ferropericlase
(Mg,Fe)O in KLB-1 peridotite, ~15 atom% iron; data reproduced by EoS of (Mg0.80,Fe0.20)O
Birch-Murnaghan (order unspecified) · Original · 2009
Why this differs from similar rows?
High-spin (HS) ferropericlase state, K0 fixed to 158 GPa from Fei et al. [2007b] (K' fixed to 4); sibling row is the low-spin (LS) state with a different fixed K0.
V₀
76.44
ų
Unit cell
K₀
158
GPa
Isothermal
K′
4
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 76.44 | 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 | 0.8 |
| FeO | 0.2 |
Formula: (Mg,Fe)O in KLB-1 peridotite, ~15 atom% iron; data reproduced by EoS of (Mg0.80,Fe0.20)O
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- —
- Method
- experiment (XRD / DAC / multianvil compression)synchrotron X-ray diffraction in laser-heated diamond anvil cell (room-temperature P-V fit for spin states, high-T thermal fit)
- Sample
- KLB-1 peridotite sintered with 7 wt% gold, Table 1 column Fp HS
Source
- Paper
- Density profile of pyrolite under the lower mantle conditions
- Authors
- A. Ricolleau; Yingwei Fei; Elizabeth Cottrell; H. C. Watson; Liwei Deng; Li Zhang; G. Fiquet; Anne‐Line Auzende; Mathieu Roskosz; G. Morard; Vitali B. Prakapenka
- DOI
- 10.1029/2008gl036759
- Year
- 2009
- Journal
- Geophysical Research Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
"We fit our pressure-volume data at room temperature by fixing the high-spin and low-spin bulk modulus, equal to 158 GPa and 170 GPa respectively [Fei et al., 2007b] (with fixed K' = 4), and obtained V0 for each spin state condition (Table 1)." Table 1: Fp HS V0 (Å3) 76.44 (2); K0,T (GPa) 158 (fixed); K'0,T 4 (fixed).
Additional notes
K0 source
fixed to value from Fei et al. [2007b]
dK dT P GPa per K
-0.034 (1)
a0 1e-5 K-1
2.20 (20)
a1 1e-8 K-2
3.61 (27)
notes
High-spin to low-spin transition observed at ~50 GPa at room temperature; no resolvable volume change at high temperature up to 110 GPa