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Ferropericlase

(Mg0.8Fe0.2)O

third-order Birch-Murnaghan · Original · 2007

Why this differs from similar rows?

Table 2 row assumes a fixed V0(LS)/V0(HS) ratio of 0.98; sibling rows use different assumed ratios (0.88-0.97, 0.99-1.00), each giving a different K0/K'.

V₀
Unit cell
K₀
123
GPa
Isothermal
K′
5.700
dimensionless

Volume (V₀)

Value Unit Basis Z
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

OxideMolar
MgO0.8
FeO0.2

Formula: (Mg0.8Fe0.2)O

Conditions & method

Tref
300 K
Pref
Structure
B1 rocksalt (Fm-3m)
Method
experiment (XRD / DAC / multianvil compression)
synchrotron X-ray diffraction, diamond-anvil cell, F-f fit
Sample
Table 2 row: V0LS/V0HS = 0.98

Source

Paper
Effects of Fe spin transition on the elasticity of (Mg, Fe)O magnesiowüstites a…
Authors
S. Speziale; V. E. Lee; S. M. Clark; Jung‐Fu Lin; M. Pasternak; Raymond Jeanloz
DOI
10.1029/2006jb004730
Year
2007
Journal
Journal of Geophysical Research Atmospheres
Origin
Original (measured or fitted in the source paper)

Evidence from the paper

Table 2: 0.98, K0 = 123 ± 20 GPa, K0' = 5.7 ± 0.9, χ2 = 0.884, RMS misfit 1.33 GPa

Additional notes

V0LS V0HS ratio
0.98
chi2
0.884
RMS misfit GPa
1.33