Stishovite
SiO2
Birch-Murnaghan (order unspecified) · Original · 2002
V₀
—
Unknown basis
K₀
304
GPa
Unknown
K′
—
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| — | — | Unknown basis | — |
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 |
|---|---|
| SiO2 | 1 |
Formula: SiO2
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- rutile-type (stishovite)
- Method
- experiment (XRD / DAC / multianvil compression)radial x-ray diffraction, nonhydrostatic compression in diamond anvil cell
- Sample
- polycrystalline stishovite synthesized in 2000-ton uniaxial split-sphere apparatus, radial XRD data at psi = 54.7 degrees below 50 GPa
Source
- Paper
- Strength and Elasticity ofSiO2across the Stishovite–CaCl2-type Structural Phase…
- Authors
- S. R. Shieh; T. S. Duffy; Baosheng Li
- DOI
- 10.1103/physrevlett.89.255507
- Year
- 2002
- Journal
- Physical Review Letters
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Fitting the 54.7° data below 50 GPa to a Birch-Manurghan equation of state yields a pressure derivative of the bulk modulus, K_0, is fixed at 304 GPa [25]. This pressure derivative is intermediate to previous values...
Additional notes
note
K0 fixed to 304 GPa from Ref. [25] (Li and Liebermann ultrasonic study). The fitted numerical value of the pressure derivative K0' from this study appears garbled/missing in the provided text and is not reported here.
K0 source
fixed to Ref. [25]