Bridgmanite
MgSiO3
third-order Birch-Murnaghan · Original · 2012
Why this differs from similar rows?
Fit uses this study's velocity and volume data alone; sibling row instead fits a combined dataset with Li and Zhang [2005] data added for better constraints.
V₀
—
Unknown basis
K₀
247
GPa
Adiabatic
K′
4.500
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
- 300 K
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (Brillouin / ultrasonic / elasticity)ultrasonic interferometry + in situ X-ray diffraction (multianvil)
- Sample
- this study (velocity + volume data)
Source
- Paper
- Acoustic velocities of pure and iron‐bearing magnesium silicate perovskite meas…
- Authors
- Julien Chantel; D. J. Frost; Catherine McCammon; Zhicheng Jing; Yanbin Wang
- DOI
- 10.1029/2012gl053075
- Year
- 2012
- Journal
- Geophysical Research Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Least squares fitting of the volume and velocity data yielded the room pressure adiabatic bulk and shear moduli (Ks, G) and their pressure derivatives (K', G') reported in Table 2. Table 2: This study 247(4) 4.5(2) 176(2) 1.6(1)
Additional notes
G GPa
176(2)
Gprime
1.6(1)