Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure gauge for helium pressure media
10.2138/am.2008.2988 · 2008 · American Mineralogist
Steven D. Jacobsen; C. M. Holl; K. A. Adams; R. A. Fischer; Emily S. Martin; Craig R. Bina; Jung‐Fu Lin; Vitali B. Prakapenka; Atsushi Kubo; Przemysław Dera
11 EOS records from this paper
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Periclase |
|
— | 74.698 ų Unit cell |
164.100 | 4.050 | third-order Birch-Murnaghan | non-hydrostatic ruby gauge of Mao et al.… | Original | ||||
| Why this differs from similar rows: Non-hydrostatic KCl-medium fit including the V0 data point, using the Mao et al. (1978) ruby scale; sibling rows use different data subsets or the He medium. | ||||||||||||
| Periclase |
|
— | 74.73 ų Unit cell |
163 | 4.080 | third-order Birch-Murnaghan | — | Original | ||||
| Why this differs from similar rows: Same non-hydrostatic KCl-medium data as sibling row but with the V0 point excluded from the fit, giving a different V0/K0/K'. | ||||||||||||
| Periclase |
|
— | 74.69 ų Unit cell |
164.600 | 4.030 | third-order Birch-Murnaghan | — | Original | ||||
| Why this differs from similar rows: Same KCl-medium data as sibling rows but with K' fixed to 4.03 following Zha et al. (2000), instead of fitting K' freely. | ||||||||||||
| Periclase |
|
— | 74.687 ų Unit cell |
159.600 | 3.740 | third-order Birch-Murnaghan | quasi-hydrostatic ruby gauge of Mao et al… | Original | ||||
| Why this differs from similar rows: Three-parameter fit to all He-medium data from all three runs (Mao et al. 1986 ruby scale plus diamond-Raman for six highest points); differs from the KCl-medium fits. | ||||||||||||
| Periclase |
|
— | 74.697 ų Unit cell |
159.500 | 3.740 | third-order Birch-Murnaghan | — | Original | ||||
| Why this differs from similar rows: Same He-medium data as sibling row but excluding the six highest-pressure points (diamond-Raman-derived pressures), using ruby pressures only. | ||||||||||||
| Periclase |
|
— | 74.695 ų Unit cell |
160.200 | 3.709 | third-order Birch-Murnaghan | — | Original | ||||
| Why this differs from similar rows: He-medium fit with KT0 fixed to 160.2 GPa for direct comparison with Speziale et al. (2001), instead of fitting KT0 freely as in sibling He-medium rows. | ||||||||||||
| Periclase |
|
— | — | 165 | 3.740 | third-order Birch-Murnaghan | — | Original | ||||
| Why this differs from similar rows: Re-analysis of the published He-only P-V data of Speziale et al. (2001), not this study's own KCl/He run data, with a 3rd-order BM EOS. | ||||||||||||
| Periclase |
|
— | — | 160.200 | 3.990 | Birch-Murnaghan (order unspecified) | — | Cited | ||||
| Why this differs from similar rows: Cites Speziale et al. (2001) polycrystalline He-medium result (KT0 fixed 160.2 GPa, K'=3.99); sibling row instead cites the Zha et al. (2000) primary MgO scale. | ||||||||||||
| Periclase |
|
— | 74.53 ų Unit cell |
170 | 3.590 | third-order Birch-Murnaghan | — | Cited | ||||
| Periclase |
|
— | — | 160.200 | 4.030 | Birch-Murnaghan (order unspecified) | — | Cited | ||||
| Why this differs from similar rows: Cites the Zha et al. (2000) primary MgO pressure scale (KT0=160.2 GPa, K'=4.03); sibling row instead cites Speziale et al. (2001), which has a different K'. | ||||||||||||
| Periclase |
|
— | 74.698 ų Unit cell |
— | — | none (not an EOS fit) | — | Cited | ||||