Post-perovskite
MgSiO3
AP2 · Original · 2016
Why this differs from similar rows?
'fit3': This study + Guignot et al. data with V0 free; sibling row 'fit4' instead fixes V0 to the g-G-plot value (163.45 A3), changing the fitted K0/K'.
V₀
155.9
ų/cell
Formula unit
K₀
336
GPa
Isothermal
K′
3.130
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 155.9 | 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
- fit3 (This study + Guignot et al. data)
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: AP2 | 155.9± 1.6 | 336± 28 | 3.13± 0.23 | γ0=1.46± 0.09 | γ∞=2/3 fix | q=1.84± 0.08 | θ0=933± 257 | fit3 | Exp., LHDAC | T-MgO(AP2) | This study +Guignot et al.10
Additional notes
fit number
fit3
gamma0
1.46± 0.09
gamma inf
2/3 fix
q or beta
1.84± 0.08
theta0 K
933± 257
pressure scale
T-MgO(AP2): Tange et al. MgO scale