Bridgmanite
Mg0.875Fe0.125SiO3
none (not an EOS fit) · Cited · 2022
V₀
—
Unknown basis
K₀
249.400
GPa
Adiabatic
K′
4.040
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 | 0.875 |
| FeO | 0.125 |
| SiO2 | 1 |
Formula: Mg0.875Fe0.125SiO3
Conditions & method
- Tref
- 270 K
- Pref
- —
- Structure
- perovskite (unspecified)
- Method
- first-principles DFT / ab initiofirst-principles calculations (cited: Cal.5 Shukla et al.)
- Sample
- Table 2, Bridgmanite Mg0.875Fe0.125SiO3 (Cal.5)
Source
- Paper
- Elastic properties of Fe-bearing Akimotoite at mantle conditions: Implications …
- Authors
- Yajie Zhao; Zhongqing Wu; Shangqin Hao; Wenzhong Wang; Xin Deng; Jian Song
- DOI
- 10.1016/j.fmre.2021.12.013
- Year
- 2022
- Journal
- Fundamental Research
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
Table 2: Bridgmanite Mg0.875Fe0.125SiO3, K_S (GPa) = 249.4, ∂K_S/∂P = 4.04, ∂K_S/∂T (MPa/K) = -19.56, Ref Cal.5. Footnote: fits for 0-30 GPa and 270-2000 K based on M = M0 + ∂M/∂P × P + ∂M/∂T × (T-270) + ...; Cal.5 Shukla et al. [64].
Additional notes
dKs dT MPa per K
-19.56
d2Ks dP2 x1e-3 GPa-1
-5.07
d2Ks dPdT x1e-4 K-1
0.96
d2Ks dT2 x1e-6 GPa per K2
-1.37
G GPa
164.6
dG dP
1.79
dG dT MPa per K
-19.74
source reference
Cal.5 Shukla et al. [64]
note
Adiabatic moduli polynomial fit used for velocity modeling; no V0 reported