Periclase
MgO
third-order Birch-Murnaghan · Original · 2000
Why this differs from similar rows?
Fit with K' fixed to 4.0, giving K0=159 GPa; sibling row instead fixes K0 to 161 GPa (acoustic value) and fits K' freely (=3.94).
V₀
74.71
ų
Unit cell
K₀
159
GPa
Isothermal
K′
4
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 74.71 | 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 |
|---|---|
| MgO | 1 |
Formula: MgO
Conditions & method
- Tref
- 300 K
- Pref
- —
- Structure
- B1 rocksalt (Fm-3m)
- Method
- experiment (XRD / DAC / multianvil compression)laser-heated diamond anvil cell + monochromatic synchrotron X-ray diffraction (ESRF ID30)
- Sample
- high-purity synthetic MgO mixed with Pt pressure calibrant, Ar medium
Source
- Paper
- P‐V‐T equation of state of periclase from synchrotron radiation measurements
- Authors
- Agnès Dewaele; G. Fiquet; D. Andrault; Daniel M. Häusermann
- DOI
- 10.1029/1999jb900364
- Year
- 2000
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 3: Birch-Murnaghan, V0 74.71 (fixed), K0 159.0(6) GPa, K' 4 (fixed). Text: 'If K' is fixed to 4.0, K0 = 159 GPa is obtained (Table 3).' Data from Utsumi et al. [1998], Fiquet et al. [1996], Fei [1999], and from this study.
Additional notes
note
V0 fixed to average of several literature measurements: V0 = 74.71 ± 0.03 Å3; fit uses combined data from this study plus Fiquet et al. [1996], Fei [1999], Utsumi et al. [1998]