Davemaoite
CaSiO3
Birch-Murnaghan (order unspecified) · Original · 1996
Why this differs from similar rows?
Table 2 'Weighted, 2' fit using run 13 alone; sibling fits instead use all four runs (weighted) or an unweighted scheme.
V₀
45.61
ų
Unit cell
K₀
229
GPa
Isothermal
K′
4.800
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 45.61 | 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)
- Sample
- run 13 alone, Table 2 'Weighted, 2'
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
"A similar weighted fit using the first three terms in (3a) gives V0 = 45.61(2) Å^3, K_T0 = 229(4) GPa, and a0 = 3.04(5) x 10^-5 K^-1"; Table 2 'Weighted, 2': K_T0 = 229(4), K'_T0 = [4.8], V0 = 45.61(2).
Additional notes
alpha0
3.01 x 10^-5 K^-1 (Table 2); 3.04(5) x 10^-5 K^-1 (text)
dKT dT V
[0] (fixed)
dKT dT P
-0.033 GPa K^-1