Bridgmanite
MgSiO3
Vinet · Cited · 1996
V₀
40.25
ų
Unit cell
K₀
272
GPa
Isothermal
K′
3.800
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 40.25 | ų | Unit cell | — |
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
- perovskite (unspecified)
- Method
- literature compilation / cited valuetheoretical calculation (static lattice), literature values combined with Debye-model thermal pressure
- Sample
- theoretical (static lattice), values taken from ref [29]
Source
- Paper
- The search for a universal equation of state correct up to very high pressures
- Authors
- Juichiro Hama; Kaichi Suito
- DOI
- 10.1088/0953-8984/8/1/008
- Year
- 1996
- Journal
- Journal of Physics Condensed Matter
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
In figure 8 we plot several isobars of MgSiO3 (perovskite) whose high-temperature and high-pressure properties have important implications as regards the composition of the lower mantle of the Earth. The theoretical values (static lattice) of V0, B0 and B0' are taken from [29]: V0 = 40.25 Å^3, B0 = 272 GPa, B0' = 3.80 and for Θ0 the experimental value of 1030 K is used.
Additional notes
Theta0
1030 K (experimental Debye temperature)
note
Static-lattice theoretical parameters cited from ref [29]; used with the Vinet equation plus Debye-model thermal pressure to compute isobars compared with experimental data at 25 and 36 GPa.