Bridgmanite

MgSiO3

Birch-Murnaghan (order unspecified) · Original · 2018

V₀

2.445

Jbar-1

Molar

K₀

252

GPa

Isothermal

K′

4.380

dimensionless

Volume (V₀)

Value	Unit	Basis	Z
2.445	Jbar-1	Molar	—

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
SiO2	1

Formula: MgSiO3

Conditions & method

T_ref: 298.2 K
P_ref: 0.000 GPa
Structure: perovskite (unspecified)
Method: unknown
optimization of selected reference and experimental data (least squares fitting in Excel)
Sample: Table 1, Bridgmanite column

Source

Paper: Spreadsheets to calculateP–V–Trelations, thermodynamic and thermoelastic proper…
Authors: T. S. Sokolova; Peter I. Dorogokupets; Konstantin D. Litasov; B. S. Danilov; А. M. Dymshits
DOI: 10.1080/08957959.2018.1465056
Year: 2018
Journal: High Pressure Research
Origin: Original (measured or fitted in the source paper)

Evidence from the paper

Table 1. Parameters of equations of state for Au, Pt, MgO and silicates in the MgSiO3-MgO system: Bridgmanite: V0, Jbar-1 = 2.445; K0, kbar = 2520; K' = 4.38; k = 5. 'Equations (1-13) contain a group of fixed parameters V0, K0, K', k, m1, m2, R ...'

Additional notes

k Kunc

Theta 01 K

Theta 02 K

7.5

7.5

gamma 0

1.7

beta

3.0

gamma inf

U0 kJmol-1

-1472.5

G0 GPa

173.0

dG dT GPaK-1

-0.028

dG dP

2.0

shear modulus reference

Li and Zhang [25]