Bridgmanite
MgSiO3
Mie-Grüneisen-Debye / thermal EOS · Original · 2000
V₀
162.3
ų
Unit cell
K₀
259
GPa
Isothermal
K′
3.700
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 162.3 | 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
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (XRD / DAC / multianvil compression)P-V-T inversion of synchrotron X-ray diffraction data (laser-heated diamond-anvil cell)
- Sample
- Table 3 fit (1), Mie-Grüneisen column: this study data + Fiquet et al. [1998]
Source
- Paper
- Thermoelastic properties and crystal structure of MgSiO3 perovskite at lower ma…
- Authors
- G. Fiquet; Agnès Dewaele; D. Andrault; Martin Kunz; Thierry Le Bihan
- DOI
- 10.1029/1999gl008397
- Year
- 2000
- Journal
- Geophysical Research Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 3: V0 (Å3) 162.3 (fixed) ... 162.3; K0,T (GPa) 259; K'0,T 3.7; ΘD 1100 K (fixed); γ0 1.4; q 1.4 (5). 'we used a Mie-Grüneisen equation of state to constrain the Grüneisen parameter γ and the q parameter'
Additional notes
theta D
1100 K (fixed), value from Anderson [1998]
gamma0
1.4 (preferred value from Jackson and Rigden [1996])
q
1.4 (5)
data sets
optimized from data set presented in Table 1 and that of Fiquet et al. [1998], 63 data points