Bridgmanite
MgSiO3
none (not an EOS fit) · Cited · 2022
V₀
—
Unknown basis
K₀
247.500
GPa
Adiabatic
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 | 1 |
| SiO2 | 1 |
Formula: MgSiO3
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 MgSiO3 (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 MgSiO3, K_S (GPa) = 247.5, ∂K_S/∂P = 4.00, ∂K_S/∂T (MPa/K) = -19.38, Ref Cal.5. Footnote: 'The data from calculations are fitted for the pressure and temperature range of 0-30 GPa and 270-2000 K respectively based on the equation: M = M0 + ∂M/∂P × P + ∂M/∂T × (T-270) + ...'; Cal.5 Shukla et al. [64].
Additional notes
dKs dT MPa per K
-19.38
d2Ks dP2 x1e-3 GPa-1
-4.96
d2Ks dPdT x1e-4 K-1
1.03
d2Ks dT2 x1e-6 GPa per K2
-1.42
G GPa
167.6
dG dP
1.79
dG dT MPa per K
-19.8
source reference
Cal.5 Shukla et al. [64]
note
Adiabatic moduli polynomial fit used for velocity modeling at base of transition zone; no V0 reported