Bridgmanite
MgSiO3
Vinet · Original · 2012
Why this differs from similar rows?
Table 2 preferred Vinet-form fit, KT0/K'T0 free, V0 fixed to Tange et al. [2009b]; sibling row is an alternative fit additionally constrained by external KS0 = 253 GPa.
V₀
162.373
ų
Unit cell
K₀
258.400
GPa
Isothermal
K′
4.100
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 162.373 | 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
- 300 K
- Pref
- —
- Structure
- perovskite (unspecified)
- Method
- experiment (XRD / DAC / multianvil compression)in situ synchrotron XRD (SDMA and LHDAC), P-V-T up to 110 GPa and 2500 K; MgO pressure scale
- Sample
- synthesized from Mg2SiO4 olivine powder at high P,T
Source
- Paper
- P‐V‐T equation of state of MgSiO3 perovskite based on the MgO pressure scale: A…
- Authors
- Yoshinori Tange; Yasuhiro Kuwayama; Tetsuo Irifune; Ken‐ichi Funakoshi; Yasuo Ohishi
- DOI
- 10.1029/2011jb008988
- Year
- 2012
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 2. EOS Parameters of MgSiO3 Perovskite and MgO in the MGD Model: Vinet, MgSiO3 Perovskite: V0 (Å3) 162.373 (fixed); KT0 (GPa) 258.4(17); K'T0 4.10(7); Θ0 (K) 940(140); γ0 1.55(9); a 1; b 1.1(3). 'five model parameters, KT0, K'T0, Θ0, γ0, and b, were determined with fixed V0 of 162.373 Å3 determined by Tange et al. [2009b]'
Additional notes
Theta0 K
940(140)
gamma0
1.55(9)
a
1
b
1.1(3)
V0 source
fixed to value determined by Tange et al. [2009b] using same measurement system at BL10XU, SPring-8
K S0 derived GPa
260.8