Davemaoite
CaSiO3
Birch-Murnaghan (order unspecified) · Original · 1996
Why this differs from similar rows?
Refit of Mao et al. [1989] data excluding points below 1 GPa (likely amorphization), same weighting as row 508; other sibling row weights all points equally instead.
V₀
45.47
ų
Unit cell
K₀
268
GPa
Isothermal
K′
4.300
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 45.47 | 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
- —
- Pref
- —
- Structure
- cubic perovskite (Pm-3m)
- Method
- experiment (XRD / DAC / multianvil compression)diamond anvil cell X-ray diffraction to 134 GPa (data of Mao et al. [1989], refit in this study)
- Sample
- Mao et al. [1989] DAC data, lower-volume data below 1 GPa excluded (weighted fit)
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
"When the lower-volume data below 1 GPa (most likely contaminated by amorphization) are excluded, the fit using equation (1) yields K_T0 = 268(8) GPa, K'_T0 = 4.3(2), and V0 = 45.47(6) Å^3, with the same weighting scheme."
Additional notes
data source
Mao et al. [1989] diamond anvil cell data, data below 1 GPa excluded