Post-perovskite
MgSiO3
Keane · Original · 2016
Why this differs from similar rows?
'fit5': This study + Guignot et al. data (Keane EOS) with all parameters free; sibling fits fix V0/K-infinity' to these values (fit6/fit7) or use ab initio data instead (fit8).
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
- fit5 (This study + Guignot et al. data, all parameters free)
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: Keane | 157.16± 4.54 | 310± 111 | 3.47± 2.35 | γ0=1.44± 0.19 | γ∞=0.93± 0.63 | β=2.8± 1.6 | θ0=938± 264 | K∞′=2.19± 1.27 | fit5 | Exp., LHDAC | T-MgO(Keane)
Additional notes
fit number
fit5
gamma0
1.44± 0.19
gamma inf
0.93± 0.63
beta
2.8± 1.6
theta0 K
938± 264
K inf prime
2.19± 1.27
pressure scale
T-MgO(Keane): Tange et al. MgO scale