Bridgmanite
MgSiO3 + 5 mol% Al2O3 (Al.05-pv)
third-order Birch-Murnaghan · Original · 2004
V₀
163.23
ų
Unit cell
K₀
251.500
GPa
Isothermal
K′
4
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 163.23 | 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: MgSiO3Al.05
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- orthorhombic perovskite (Pbnm/Pnma)
- Method
- experiment (XRD / DAC / multianvil compression)static compression, monochromatic synchrotron angle-dispersive X-ray diffraction in diamond anvil cell, Ne pressure medium, up to 40 GPa
- Sample
- polycrystalline sample synthesized at ~25 GPa and 1873 K in multi-anvil apparatus, same run charge as Jackson et al. [2004]
Source
- Paper
- Effect of aluminium on the compressibility of silicate perovskite
- Authors
- I. M. Daniel; Jay D. Bass; G. Fiquet; Hervé Cardon; Jianzhong Zhang; Michael Hanfland
- DOI
- 10.1029/2004gl020213
- Year
- 2004
- Journal
- Geophysical Research Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
...and V0 = 163.23(1) ų, K_T0 = 251.5(27) GPa, K'_T0 = 4.0(3) using a 3rd order Birch-Murnaghan equation. These results, as well as an f-F interpretation of the data, show that there is no significant departure of K'_0T from 4.