Bridgmanite
MgSiO3
third-order Birch-Murnaghan · Original · 1999
V₀
—
Unknown basis
K₀
260
GPa
Unknown
K′
4.020
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
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- first-principles DFT / ab initiofirst principles plane wave pseudopotential (LDA), static calculation
- Sample
- Table 1, Calc row
Source
- Paper
- Seismic velocities of major silicate and oxide phases of the lower mantle
- Authors
- Bijaya B. Karki; Lars Stixrude
- DOI
- 10.1029/1999jb900069
- Year
- 1999
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 1: MgSiO3 perovskite, Calc M: K = 260, G = 174; M' : K' = 4.02, G' = 1.65. 'Third-order Eulerian finite strain equations are fit to the calculated results'. Calculated athermal (0 K) elastic moduli at zero pressure.
Additional notes
G0 GPa
174
Gp
1.65
note
Athermal (0 K) static first-principles values; no V0 reported in this paper