Davemaoite
CaSiO3
Birch-Murnaghan (order unspecified) · Original · 1996
Why this differs from similar rows?
Refit of Mao et al. [1989] DAC data weighting remaining points equally, low-pressure amorphized data excluded; sibling rows use different weighting/exclusion schemes on same data.
V₀
45.71
ų
Unit cell
K₀
244
GPa
Isothermal
K′
4.800
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 45.71 | 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, remaining data weighted equally (low-pressure amorphized data excluded)
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
"If we weight the remaining data equally, this leads to K_T0 = 244(12) GPa, K'_T0 = 4.8(3), and V0 = 45.71(12) Å^3. This is the dotted curve in Figure 4a."
Additional notes
data source
Mao et al. [1989] diamond anvil cell data
note
Refit performed in this study; parameters compatible with both this study's data and Mao et al. data.