Periclase
MgO
third-order Birch-Murnaghan · Original · 2008
Why this differs from similar rows?
Non-hydrostatic KCl-medium fit including the V0 data point, using the Mao et al. (1978) ruby scale; sibling rows use different data subsets or the He medium.
V₀
74.698
ų
Unit cell
K₀
164.100
GPa
Isothermal
K′
4.050
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 74.698 | 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 |
|---|---|
| MgO | 1 |
Formula: MgO
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- B1 rocksalt (Fm-3m)
- Method
- experiment (XRD / DAC / multianvil compression)single-crystal angle-dispersive monochromatic synchrotron X-ray diffraction in diamond-anvil cell
- Sample
- single-crystal MgO, >99.95% purity, KCl pressure medium (non-hydrostatic), pressures from Mao et al. (1978) ruby gauge
Source
- Paper
- Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure ga…
- Authors
- Steven D. Jacobsen; C. M. Holl; K. A. Adams; R. A. Fischer; Emily S. Martin; Craig R. Bina; Jung‐Fu Lin; Vitali B. Prakapenka; Atsushi Kubo; Przemysław Dera
- DOI
- 10.2138/am.2008.2988
- Year
- 2008
- Journal
- American Mineralogist
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Using the experimental initial volume V0 = 74.698(3) Å3 of Jacobsen et al. (2002) and fitting a third-order Birch-Murnaghan equation of state to the non-hydrostatic data (KCl medium) yields V0 = 74.698(7) Å3, KT0 = 164.1(9) GPa, and K' = 4.05(4).
Additional notes
abstract values
Abstract quotes V0 = 74.698(7) Å3, KT0 = 164(1) GPa, K′ = 4.05(4) for the same fit
pressure scale
non-hydrostatic ruby gauge of Mao et al. (1978)
max pressure
87 GPa (KCl medium)