Bridgmanite
MgSiO3
finite strain (unspecified form) · Cited · 2007
V₀
—
Unknown basis
K₀
253
GPa
Adiabatic
K′
4.400
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
- experiment (Brillouin / ultrasonic / elasticity)simultaneous ultrasonic interferometry and x-ray diffraction to 9.2 GPa and 873 K
- Sample
- polycrystalline specimen (Li and Zhang, ref 29)
Source
- Paper
- Indoor seismology by probing the Earth's interior by using sound velocity measu…
- Authors
- Baosheng Li; Robert C. Liebermann
- DOI
- 10.1073/pnas.0608609104
- Year
- 2007
- Journal
- Proceedings of the National Academy of Sciences
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
Using simultaneous ultrasonic interferometry and x-ray diffraction methods described above, Li and Zhang (29) recently conducted measurements on a polycrystalline specimen of MgSiO3 perovskite ... to 9.2 GPa and 873 K. The adiabatic bulk and shear moduli and their pressure and temperature derivatives derived from this study are KS0 253 (2) GPa, G0 173 (1) GPa, KS0' 4.4 (0.1), G0' 2.0 (0.1), dKS/dT 0.021 (0.002) GPa/K, and dG/dT 0.028 (0.002) GPa/K.
Additional notes
G0
173 (1) GPa
G0 prime
2.0 (0.1)
dKS dT
0.021 (0.002) GPa/K
dG dT
0.028 (0.002) GPa/K
note
Adiabatic moduli from acoustic (ultrasonic) measurements, not static compression; values attributed to Li and Zhang (2005), ref 29, by the same authors