Davemaoite
CaSiO3
Birch-Murnaghan (order unspecified) · Original · 1996
Why this differs from similar rows?
Table 2 'Weighted' fit using all four measurement runs; sibling fits instead use only run 13 alone or an unweighted scheme on the same data.
V₀
45.6
ų
Unit cell
K₀
233
GPa
Isothermal
K′
4.800
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 45.6 | 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 |
|---|---|
| CaO | 1 |
| SiO2 | 1 |
Formula: CaSiO3
Conditions & method
- Tref
- 300 K
- Pref
- —
- Structure
- cubic perovskite (Pm-3m)
- Method
- experiment (XRD / DAC / multianvil compression)in situ synchrotron X-ray diffraction, DIA-6 cubic-anvil apparatus (SAM-85), P-V-T data to 13 GPa and 1600 K
- Sample
- all four runs, Table 2 'Weighted, 1'
Source
- Paper
- Thermal equation of state of CaSiO3 perovskite
- Authors
- Yanbin Wang; Donald J. Weidner; François Guyot
- DOI
- 10.1029/95jb03254
- Year
- 1996
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 2, Thermal Pressure Equation of State, 'Weighted, 1' column: K_T0 = 233(7) GPa, K'_T0 = [4.8], V0 = 45.60(5) Å^3. "Square brackets indicate fixed parameters in the fit."
Additional notes
alpha0
3.23 x 10^-5 K^-1
dP dT V
7.5(5) x 10^-3 GPa K^-1
dKT dT V
0.005(22) GPa K^-1
dKT dT P
-0.031 GPa K^-1