Periclase
MgO
third-order Birch-Murnaghan · Original · 2001
Why this differs from similar rows?
Fit with V0, K0T, and K' all free, yielding V0=74.53, K0T=170, K'=3.59; sibling row instead fixes K0T from independent sound-velocity data.
V₀
74.53
ų
Unit cell
K₀
170
GPa
Isothermal
K′
3.590
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 74.53 | 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)energy dispersive synchrotron X-ray diffraction in diamond anvil cell, quasi-hydrostatic, 300 K
- Sample
- pure MgO powder, DAC with methanol-ethanol (to 10 GPa) or helium (to 52 GPa) medium
Source
- Paper
- Quasi‐hydrostatic compression of magnesium oxide to 52 GPa: Implications for th…
- Authors
- S. Speziale; Chang‐Sheng Zha; T. S. Duffy; Russell J. Hemley; Ho‐kwang Mao
- DOI
- 10.1029/2000jb900318
- Year
- 2001
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
A fit of the experimental data to the third-order Birch-Murnaghan equation yields: K0T = 170 ± 1 GPa, K0T' = 3.59 ± 0.04, with a fit V0 = 74.53 ± 0.02, where K0T is the isothermal bulk modulus (-V(∂P/∂V)T).