Phase Egg
AlSiO3(OH)
third-order Birch-Murnaghan · Cited · 2018
V₀
212.99
ų
Unit cell
K₀
157
GPa
Isothermal
K′
6.500
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 212.99 | 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 |
|---|---|
| Al2O3 | 0.5 |
| SiO2 | 1 |
| H2O | 0.5 |
Formula: AlSiO3(OH)
Conditions & method
- Tref
- 300 K
- Pref
- —
- Structure
- other / unspecified
- Method
- experiment (XRD / DAC / multianvil compression)X-ray diffraction compression experiment (Vanpeteghem et al. 2003)
- Sample
- experimental sample of Vanpeteghem et al. (2003)
Source
- Paper
- Anomalous elastic behavior of phase egg, AlSiO3(OH), at high pressures
- Authors
- Mainak Mookherjee; W. R. Panero; Bernd Wunder; Sandro Jahn
- DOI
- 10.2138/am-2019-6694
- Year
- 2018
- Journal
- American Mineralogist
- Origin
- Cited (quoted from earlier work)
Evidence from the paper
The experimentally determined equation of state parameters for phase egg, i.e., (K0^exp), (V0^exp), and (K0'^exp) are 157.0 (±4.0) GPa, 212.99 (±0.01) ų, and 6.5 (±0.4), respectively (Vanpeteghem et al. 2003). ... This is expected because the experiments are at 300 K and the first-principles simulations are at static conditions (0 K).
Additional notes
note
Cited literature values used for comparison; DFT V0 (LP) is 1.3% smaller and K0 4.7% greater than these experimental results.