Bridgmanite
MgSiO3
Vinet · Original · 1998
Why this differs from similar rows?
Static-lattice parameters adopted directly from Stixrude and Cohen [1993] LAPW calculation; sibling row instead adjusts only V0 to better match specific experimental runs.
V₀
160.74
ų
Unit cell
K₀
266
GPa
Unknown
K′
4.200
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 160.74 | 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
- other / unspecified
- Method
- first-principles DFT / ab initiofour-parameter thermodynamic model; static parameters adopted from Stixrude and Cohen [1993] LAPW calculation
- Sample
- Table 2, static lattice parameters adopted in the present model
Source
- Paper
- Equation of state of MgSiO3 perovskite and its thermoelastic properties under l…
- Authors
- Juichiro Hama; Kaichi Suito
- DOI
- 10.1029/97jb03672
- Year
- 1998
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 2. Static Lattice Parameters for MgSiO3 and (Mg0.9, Fe0.1)SiO3 Perovskites Used in the Present: MgSiO3 V0=160.74 Å3, K0=266.0 GPa, K0'=4.20, Θ0=994 K. 'Thus we adopt the values by Stixrude and Cohen for V0, K0, and K0' in the present paper.'
Additional notes
Theta 0
994 K (static lattice Debye temperature, determined to reproduce experimental Θ_D = 980 K at ambient conditions from Akaogi and Ito [1993])
calculated ambient volume
162.54 Å3, within experimental range 162.1-162.80 Å3 [Ross and Hazen, 1989]
derived K T0
256.4 GPa at ambient conditions (Table 3)
derived K T0 prime
4.23 at ambient conditions (Table 3)
gamma 0
1.279 (Table 3)
delta T0
5.21 (Table 3)
alpha T0
1.57e-5 K^-1
dKT dT P
-2.09e-2 GPa K^-1 (Table 3)