Ferropericlase
(Mg0.92,Fe0.08)O
unknown · Original · 2015
V₀
—
Unknown basis
K₀
161.600
Isothermal
K′
4
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 | 0.92 |
| FeO | 0.08 |
Formula: (Mg0.92Fe0.08)O
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- B1 rocksalt (Fm-3m)
- Method
- experiment (XRD / DAC / multianvil compression)synchrotron X-ray diffraction in diamond anvil cell up to 91 GPa, Ne pressure medium, Au pressure calibrant
- Sample
- single-crystal (100) platelet, synthesized via Fe-Mg inter-diffusion
Source
- Paper
- Elasticity of Ferropericlase across the Spin Crossover in the Earth’s Lower Man…
- Authors
- Jing Yang; X. Tong; Jung‐Fu Lin; Takuo Okuchi; Naotaka Tomioka
- DOI
- 10.1038/srep17188
- Year
- 2015
- Journal
- Scientific Reports
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
The derived isothermal bulk modulus at ambient conditions (K_T0) and its pressure derivative (K_T0') are: K_T0 = 152.5 (2.4) and K_T0' = 4.1 (0.2) for the HS state, and K_T0 = 161.6 (7.1) with a fixed K_T0' of 4 for the LS state, consistent with previous studies (Fig. S3).
Additional notes
K0 unit note
Unit not explicitly stated in text; presumably GPa
spin state
low-spin (LS)
spin transition range
40-60 GPa at 300 K
note
K_T0' fixed at 4 for LS-state fit; LS zero-pressure values are extrapolations from the low-spin branch of the P-V data