Periclase

MgO

fourth-order Birch-Murnaghan · Cited · 1995

V₀

—

Unknown basis

K₀

—

K′

4.040

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 ↔ Å³/f.u. conversion is not applied automatically.

Composition

Oxide	Molar
MgO	1

Formula: MgO

Conditions & method

T_ref: —
P_ref: —
Structure: B1 rocksalt (Fm-3m)
Method: unknown
fluorescence sideband measurements to 20 GPa at room temperature
Sample: MgO, fluorescence sideband measurements to 20 GPa at room temperature (Chopelas [1992])

Source

Paper: Compressional sound velocity, equation of state, and constitutive response of s…
Authors: T. S. Duffy; Thomas J. Ahrens
DOI: 10.1029/94jb02065
Year: 1995
Journal: Journal of Geophysical Research Atmospheres
Origin: Cited (quoted from earlier work)

Evidence from the paper

In contrast, Chopelas [1992] obtained (d2K0S/dP2)T = -0.054(16) GPa-1 from fluorescence sideband measurements on MgO to 20 GPa at room temperature. ... The pressure derivatives of Chopelas [1992] have been corrected to constant entropy conditions (K'0S = 4.04, K''0S = -0.052 GPa-1) in making this comparison. Short-dashed curve shows fourth-order Birch-Murnaghan fit using parameters of Chopelas [1992].

Additional notes

K0S second pressure derivative corrected

-0.052 GPa-1

second derivative as reported by Chopelas

(d2K0S/dP2)T = -0.054(16) GPa-1

G0 double prime Chopelas

-0.034(10) GPa-1

note

Values cited by Duffy and Ahrens for comparison; found inconsistent with high-pressure Hugoniot data