Bridgmanite
MgSiO3 (end-member)
none (not an EOS fit) · Original · 2004
V₀
162.4
ų
Unit cell
K₀
253
GPa
Adiabatic
K′
—
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 162.4 | 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 (Brillouin / ultrasonic / elasticity)Brillouin spectroscopy (single-crystal, Voigt-Reuss-Hill average of Cij)
- Sample
- single crystals (three general crystallographic orientations)
Source
- Paper
- Elasticity of single crystal and polycrystalline MgSiO3 perovskite by Brillouin…
- Authors
- Stanislav Sinogeikin; Jianzhong Zhang; Jay D. Bass
- DOI
- 10.1029/2004gl019559
- Year
- 2004
- Journal
- Geophysical Research Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
The polycrystalline and single-crystal Brillouin measurements resulted in identical values of the bulk modulus (K_S = 253(3) GPa, Voigt-Reuss-Hill average) ... A value of K_T0 = 251(3) GPa (this study) will significantly modify temperature, compositional, and pressure derivatives of perovskite.
Additional notes
shear modulus mu GPa
175(2)
VP km s
10.88(6)
VS km s
6.53(3)
K T0 derived GPa
251(3)
note
K_T0 = 251(3) GPa quoted in this study as isothermal equivalent of measured K_S