Bridgmanite
MgSiO3
Birch-Murnaghan (order unspecified) · Cited · 1999
V₀
—
Unknown basis
K₀
261
GPa
Isothermal
K′
4
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
- 300 K
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (XRD / DAC / multianvil compression)X-ray diffraction, multianvil press (cited study)
- Sample
- MgSiO3 Pv (14)
Source
- Paper
- Thermal Equation of State of Aluminum-Enriched Silicate Perovskite
- Authors
- Jianzhong Zhang; Donald J. Weidner
- DOI
- 10.1126/science.284.5415.782
- Year
- 1999
- Journal
- Science
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
Table 3: MgSiO3 Pv (14): K_{0,T} = 261 GPa, (∂K_T/∂T)_P = -0.023(11) GPa K⁻¹; 'In all studies, the pressure derivative, K_0', is fixed at 4.'
Additional notes
dKT dT GPa per K
-0.023(11)
alpha0 x1e5
1.64(19)
alpha1 x1e8
0.86(34)
reference
ref. 14