Post-perovskite
MgSiO3
Keane · Original · 2016
Why this differs from similar rows?
'fit6': same dataset as fit5 but with V0 and K-infinity' fixed to the fit5 values (157.16, 2.19) while other parameters are refit; V0/K0/K' match fit5 but theta0/beta differ.
V₀
157.16
ų/cell
Formula unit
K₀
310
GPa
Isothermal
K′
3.470
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 157.16 | ų/cell | Formula unit | — |
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
- 300 K
- Pref
- —
- Structure
- post-perovskite (CaIrO3-type, Cmcm)
- Method
- experiment (XRD / DAC / multianvil compression)LHDAC powder X-ray diffraction
- Sample
- fit6 (This study + Guignot et al. data, V0 and K∞′ fixed to fit5 values)
Source
- Paper
- Experimental and theoretical thermal equations of state of MgSiO3 post-perovski…
- Authors
- Takeshi Sakai; Haruhiko Dekura; Naohisa Hirao
- DOI
- 10.1038/srep22652
- Year
- 2016
- Journal
- Scientific Reports
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 1: 157.16 fix | 310± 2 | 3.47± 0.05 | γ0=1.44± 0.09 | γ∞=0.93 fix | β=2.8± 0.3 | θ0=938± 240 | K∞′=2.19 fix | fit6 | Exp., LHDAC | T-MgO(Keane)
Additional notes
fit number
fit6
gamma0
1.44± 0.09
gamma inf
0.93 fix
beta
2.8± 0.3
theta0 K
938± 240
K inf prime
2.19 fix
pressure scale
T-MgO(Keane): Tange et al. MgO scale