Periclase
MgO
Stacey reciprocal K-primed · Original · 2019
V₀
—
Unknown basis
K₀
141
GPa
Unknown
K′
20
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 |
|---|---|
| MgO | 1 |
Formula: MgO
Conditions & method
- Tref
- 300 K
- Pref
- 0.000 GPa
- Structure
- B1 rocksalt (Fm-3m)
- Method
- unknownfit to experimental p-v-T compression data
- Sample
- MgO, fit to extensive p-v-T compression dataset (Kono et al. 2010)
Source
- Paper
- Predicting the Melting Curve of MgO: An Essential Update
- Authors
- Kazuhiro Fuchizaki
- DOI
- 10.7566/jpsj.88.065003
- Year
- 2019
- Journal
- Journal of the Physical Society of Japan
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
By adopting the SD constraint, the PM EOS takes the following form... The combination of K'_inf = 4 resulting from Eq. (4)... and K'_0 = 20/3 satisfies all the requirements... The extensive p-v-T dataset was used to determine the coefficients, A_0 and A_1 in Eq. (5a)... The fit resulted in K_0 = -6A_0(T_0) = 141 GPa. ... In the following, we take 300 K and 1 atm for T_0 and p_0, respectively.
Additional notes
K inf prime
4
melting curve coefficients
K_m0 = 24(7) GPa and K'_m0 = 11(4) at T_m0 = 3010 K; Gamma_m0 = 2.22(3), Gamma'_m0 = 5.0(1.3)e-4
PM coefficient temperature expansion
A_0^0 = -35.3(1.5) GPa, A_0^1 = 4.0(4)e-2 GPa K^-1, A_0^2 = -5.0(2)e-7 GPa K^-2; A_1^0 = -84.3(5) GPa, A_1^1 = -4.3(1)e-2 GPa K^-1, A_1^2 = -4.0(7)e-7 GPa K^-2; A_2^0 = 117.9(1.8) GPa, A_2^1 = 1.0(4)e-2 GPa K^-1, A_2^2 = 5(2)e-6 GPa K^-2
note
No numerical V0 reported; specific volume v = V/V0 referenced to ambient conditions