Post-perovskite
MgSiO3
Birch-Murnaghan (order unspecified) · Original · 2018
V₀
2.42
Jbar-1
Molar
K₀
253.700
GPa
Isothermal
K′
4.030
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 2.42 | Jbar-1 | Molar | — |
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
- 298.2 K
- Pref
- 0.000 GPa
- Structure
- post-perovskite (CaIrO3-type, Cmcm)
- Method
- unknownoptimization of selected reference and experimental data (least squares fitting in Excel)
- Sample
- Table 1, PPv column
Source
- Paper
- Spreadsheets to calculateP–V–Trelations, thermodynamic and thermoelastic proper…
- Authors
- T. S. Sokolova; Peter I. Dorogokupets; Konstantin D. Litasov; B. S. Danilov; А. M. Dymshits
- DOI
- 10.1080/08957959.2018.1465056
- Year
- 2018
- Journal
- High Pressure Research
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 1. Parameters of equations of state for Au, Pt, MgO and silicates in the MgSiO3-MgO system: PPv: V0, Jbar-1 = 2.420; K0, kbar = 2537; K' = 4.03; k = 5. 'Equations (1-13) contain a group of fixed parameters V0, K0, K', k, m1, m2, R ...'
Additional notes
k Kunc
5
Theta 01 K
943
Theta 02 K
417
m1
7.5
m2
7.5
gamma 0
1.67
beta
2.22
gamma inf
0
U0 kJmol-1
-1447.9
note
EoS constrained using experimental data for PPv [53, 60, 65-67], including latest measurement of Sakai et al. [67]; relevant to D'' layer / Bdg-PPv transition