Bridgmanite
(Fe0.08Mg0.92)SiO3
third-order Birch-Murnaghan · Original · 2011
Why this differs from similar rows?
Fit uses the full P-V dataset from run M868 up to >90 GPa; sibling row restricts the fit to data below 70 GPa, giving a different KT0/K'.
V₀
—
Unknown basis
K₀
268
GPa
Isothermal
K′
3.800
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 |
| SiO2 | 1 |
Formula: (Mg0.92Fe0.08)SiO3
Conditions & method
- Tref
- 300 K
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (XRD / DAC / multianvil compression)in situ X-ray diffraction in Kawai-type multianvil apparatus with sintered diamond anvils (SPring-8, SPEED-Mk.II)
- Sample
- sintered mixture of (Fe0.08Mg0.92)SiO3 perovskite and Au, run M868
Source
- Paper
- High Pressure Generation in a Kawai-Type Apparatus Equipped with Sintered Diamo…
- Authors
- Daisuke Yamazaki
- DOI
- 10.4131/jshpreview.21.272
- Year
- 2011
- Journal
- The Review of High Pressure Science and Technology
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
300 K での体積データを 3 次の Birch-Murnaghan 状態方程式に当てはめた。その結果,等温体積弾性率(KT0)として 268 GPa,その圧力依存性(K′)として 3.8 を得た。 (Fig. 7: KT0=268 GPa and its pressure derivative, K′=3.8; abstract: bulk modulus and its pressure derivative are determined to be 268 GPa and 3.8, up to more than 90 GPa)
Additional notes
pressure range
up to more than 90 GPa (max 95-97.2 GPa)
pressure standard
Au (Tsuchiya 2003 EOS)
thermal parameters assumed
γ0=1.7, q=2.6, θ0=1030 K assumed for high-T compression curves (after Katsura et al. [13])