Bridgmanite

MgSiO3

Birch-Murnaghan (order unspecified) · Original · 2000

Why this differs from similar rows?

Table 3 fit (2): optimized from Wang et al. [1994], Funamori et al. [1996] and Saxena et al. [1999]; sibling fit (1) uses this study's data plus Fiquet et al. [1998].

V₀

162.3

Å³

Unit cell

K₀

267.600

GPa

Isothermal

K′

3.780

dimensionless

Volume (V₀)

Value	Unit	Basis	Z
162.3	Å³	Unit cell	—

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: —
P_ref: —
Structure: orthorhombic perovskite (Pbnm/Pnma)
Method: literature compilation / cited value
P-V-T inversion (fit performed in this study to literature data sets)
Sample: Table 3 fit (2): data sets of Wang et al. [1994], Funamori et al. [1996] and Saxena et al. [1999], 213 data points

Source

Paper: Thermoelastic properties and crystal structure of MgSiO3 perovskite at lower ma…
Authors: G. Fiquet; Agnès Dewaele; D. Andrault; Martin Kunz; Thierry Le Bihan
DOI: 10.1029/1999gl008397
Year: 2000
Journal: Geophysical Research Letters
Origin: Original (measured or fitted in the source paper)

Evidence from the paper

Table 3: (2) column: V0 162.3; K0,T 267.6 (9); K'0,T 3.78 (3); (∂K/∂T)P -0.021 (2); α0 1.54 (4); α1 0.92 (9). '(2) optimized from data sets of Wang et al. [1994], Funamori et al. [1996] and Saxena et al. [1999]'

Additional notes

dK dT P

-0.021 (2) GPaK-1

alpha0

1.54 (4) x10-5 K-1

alpha1

0.92 (9) x10-8 K-2

note

fit performed by authors of this study using cited literature data