Davemaoite
CaSiO3
Birch-Murnaghan (order unspecified) · Cited · 1996
Why this differs from similar rows?
Refit of Wang et al. [1996] (WWG) XRD data with K0' fixed to 4.0; a different original dataset from the Mao et al. [1989] refit in sibling row 531.
V₀
45.59
ų
Unit cell
K₀
233
GPa
Isothermal
K′
4
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 45.59 | 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)x-ray diffraction, cubic anvil device with NaCl pressure medium and external heating, up to 13 GPa and 1600 K (quasi-hydrostatic)
- Sample
- Experiment: WWG (1996) / Wang et al. [1996] refined data set, constrained fit K0'=4, Table 2
Source
- Paper
- First‐principles calculation of the equation‐of‐state, stability, and polar opt…
- Authors
- A. V. G. Chizmeshya; George H. Wolf; Paul F. McMillan
- DOI
- 10.1029/96gl02624
- Year
- 1996
- Journal
- Geophysical Research Letters
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
'Using their refined data set and fixing K0' to 4.0, values of V0 = 45.59(4) Å3 and K0 = 233(7) GPa for the equation of state parameters are obtained.' Table 2: Experiment WWG (1996)*: V0 = 45.59 Å3, K0 = 233 GPa, K0' = 4.00.
Additional notes
data source
Wang et al. [1996]
note
fit to Wang et al. data with excessive non-hydrostatic/amorphized low-pressure points excluded