Post-perovskite
MgSiO3
Vinet · Cited · 2025
V₀
—
Unknown basis
K₀
253.700
Isothermal
K′
4.030
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
- —
- Pref
- —
- Structure
- post-perovskite (CaIrO3-type, Cmcm)
- Method
- literature compilation / cited valuetheoretical EOS calculation using literature input parameters
- Sample
- Table 1 input data for MgSiO3-MgO system
Source
- Paper
- Exploring the High-Pressure Equation of State in Earth’s Mantle with a Focus on…
- Authors
- —
- DOI
- 10.15407/mfint.47.06.0601
- Year
- 2025
- Journal
- METALLOFIZIKA I NOVEISHIE TEKHNOLOGII
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
TABLE 1. Values of input data for MgSiO3-MgO System. | Postperovskite | 253.7 | 4.03 | 1.670 | 22.274 | ... taking the input data of K0, K0' and K''_T of earlier work [22].
Additional notes
gamma0
1.67
alpha0
22.274e-6 K^-1
Kp infinity
2.41 (K'_inf = 3/5 K0', Table 2; also stated K'_inf = 2.41 for lower mantle)
gamma infinity
1.042
A
0.598
B
0.872
lambda infinity
1.44
K0 unit note
unit not explicitly stated in Table 1; pressures elsewhere in paper are in GPa
input source
earlier work [21, 22]
V0 note
no numerical V0 reported; EOS expressed in terms of V/V0 only
context
MgSiO3-MgO system framed as ultimate phase of Earth's lower mantle; D-layer relevance