Bridgmanite
(Mg0.9, Fe0.1)SiO3
Vinet · Original · 1998
Why this differs from similar rows?
Least-squares fit combining Knittle and Jeanloz [1987] P-V data with Wang et al. [1994] zero-pressure data; sibling row is an alternative V0-only adjustment of this fit.
V₀
161.16
ų
Unit cell
K₀
263.900
GPa
Unknown
K′
4.180
dimensionless
Volume (V₀)
| Value | Unit | Basis | Z |
|---|---|---|---|
| 161.16 | ų | 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
| Oxide | Molar |
|---|---|
| MgO | 0.9 |
| FeO | 0.1 |
| SiO2 | 1 |
Formula: (Mg0.9Fe0.1)SiO3
Conditions & method
- Tref
- —
- Pref
- —
- Structure
- other / unspecified
- Method
- unknownleast-squares fit to experimental P-V data to 112 GPa of (Mg0.88,Fe0.12)SiO3 at room temperature by Knittle and Jeanloz [1987] combined with zero-pressure data of (Mg0.9,Fe0.1)SiO3 by Wang et al. [1994]
- Sample
- Table 2, static lattice parameters determined in this study
Source
- Paper
- Equation of state of MgSiO3 perovskite and its thermoelastic properties under l…
- Authors
- Juichiro Hama; Kaichi Suito
- DOI
- 10.1029/97jb03672
- Year
- 1998
- Journal
- Journal of Geophysical Research Atmospheres
- Origin
- Original (measured or fitted in the source paper)
Evidence from the paper
Table 2: (Mg0.9, Fe0.1)SiO3 V0=161.16 Å3, K0=263.9 GPa, K0'=4.18, Θ0=994 K. 'Using experimental P-V data to 112 GPa of (Mg0.88, Fe0.12)SiO3 perovskite at room temperature by Knittle and Jeanloz [1987] combined with zero pressure data of (Mg0.9, Fe0.1)SiO3 perovskite at room temperature by Wang et al. [1994]... we determined the parameters, V0, K0, and K0', by a least square fitting method where Θ0 is assumed to be the same as for MgSiO3 perovskite.'
Additional notes
Theta 0
994 K (assumed same as MgSiO3 perovskite)
derived K T0
254.4 GPa at ambient conditions (Table 3)
derived K T0 prime
4.21 (Table 3)
gamma 0
1.269 (Table 3)
delta T0
5.18 (Table 3)