Original determinations
Parameters measured or fitted in the source paper (excludes cited values). One row per paper — expand to see every matching EOS record.
22 papers · 60 EOS records
2025 1 EOS record First Observation of Quenched Davemaoite to Ambient Conditions: Its Electron Diffraction Pattern 10.1029/2025gl115280
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 45.16 ų Unit cell |
— | — | none (not an EOS fit) | — | Original |
2021 2 EOS records Phase Relations in CaSiO3 System up to 100 GPa and 2500 K 10.1134/s0016702921080073
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 44.702 ų Unit cell |
244 | 4.200 | Vinet | — | Original | ||||||
| Why this differs from similar rows: This work's LDA calculation (VASP, quasi-harmonic lattice dynamics); sibling row is this work's GGA-PBE calculation, a different DFT functional giving different V0/K0. | ||||||||||||||
| Davemaoite |
|
— | 46.828 ų Unit cell |
212 | 4.200 | Vinet | — | Original | ||||||
| Why this differs from similar rows: This work's GGA-PBE calculation (VASP, quasi-harmonic lattice dynamics); sibling row is this work's LDA calculation, a different DFT functional giving different V0/K0. | ||||||||||||||
2021 2 EOS records High-pressure experimental study of tetragonal CaSiO3-perovskite to 200 GPa 10.2138/am-2021-7913
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
300 K | 45.6 ų Unit cell |
227 | 4 | Birch-Murnaghan (order unspecified) | Pt (Fei et al. 2007) | Original | ||||||
| Why this differs from similar rows: This study's free-K' fit (Table 2), K'=4.0(3) refined rather than fixed; sibling row is the fixed-K'=4 fit to the same data, giving a slightly different K0 and V0. | ||||||||||||||
| Davemaoite |
|
300 K | 45.6 ų Unit cell |
229 | 4 | Birch-Murnaghan (order unspecified) | Pt (Fei et al. 2007) | Original | ||||||
| Why this differs from similar rows: This study's fixed-K'=4 fit (Table 2, K' marked as fixed); sibling row instead lets K' vary freely in the fit, giving a slightly different K0 and V0. | ||||||||||||||
2021 1 EOS record Equations of State of Ca-Silicates and Phase Diagram of the CaSiO3 System under Upper Mantle Conditions 10.3390/min11030322
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
298.2 K | 27.403 cm³/mol Molar |
239 | 4.130 | Kunc | — | Original |
2018 1 EOS record Crystal structure of CaSiO3 perovskite at 28–62 GPa and 300 K under quasi-hydrostatic stress conditions 10.2138/am-2018-6087
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
300 K | — | 223 | 4 | unknown | — | Original |
2014 2 EOS records P‐V‐T equation of state of cubic CaSiO3 perovskite from first‐principles computation 10.1002/2013jb010905
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
1000 K | 46.17 ų/f.u. Formula unit |
203.500 | 4.760 | Vinet | — | Original | ||||||
| Davemaoite |
|
1000 K | 46.21 ų Unit cell |
206.600 | 4.410 | third-order Birch-Murnaghan | — | Original |
2013 1 EOS record New Thermodynamic Models and Calculated Phase Equilibria in NCFMAS for Basic and Ultrabasic Compositions thro… 10.1093/petrology/egt035
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
298 K | 2.745 kJ kbar-1 Molar |
236 | 3.900 | modified Tait | — | Original |
2009 1 EOS record Density profile of pyrolite under the lower mantle conditions 10.1029/2008gl036759
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 45.6 ų Unit cell |
244 | 4 | Birch-Murnaghan (order unspecified) | — | Original |
2009 1 EOS record Dislocation modeling in calcium silicate perovskite based on the Peierls-Nabarro model 10.2138/am.2009.3003
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | — | 220 | 3.690 | unknown | — | Original |
2007 1 EOS record First-principles study of the elastic and thermodynamic properties of CaSiO3perovskite 10.1088/0953-8984/19/24/246…
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 45.46 ų Unit cell |
240 | 4.150 | third-order Birch-Murnaghan | — | Original |
2005 18 EOS records CaSiO3 perovskite at lower mantle pressures 10.1029/2004gl022144
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 44.579 ų Unknown basis |
250 | 4.098 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM3 fit for the Pm3m candidate structural model; sibling rows fit the same static DFT data set for different candidate space groups (I4/mcm, Imma, R3c, etc.). | ||||||||||||||
| Davemaoite |
|
— | 44.537 ų Unknown basis |
249 | 4.090 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM3 fit for the I4/mcm candidate structural model, noted as the most likely stable static configuration; sibling rows fit different candidate space groups. | ||||||||||||||
| Davemaoite |
|
— | 44.567 ų Unknown basis |
249 | 4.094 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM3 fit for the Imma candidate structural model; sibling rows fit different candidate space groups (Pm3m, I4/mcm, R3c, etc.). | ||||||||||||||
| Davemaoite |
|
— | 44.821 ų Unknown basis |
247 | 4.100 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM3 fit for the R3c candidate structural model; sibling rows fit different candidate space groups. | ||||||||||||||
| Davemaoite |
|
— | 44.629 ų Unknown basis |
247 | 4.124 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM3 fit for the P4/mbm candidate structural model; sibling rows fit different candidate space groups. | ||||||||||||||
| Davemaoite |
|
— | 44.599 ų Unknown basis |
250 | 4.103 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM3 fit for the I4/mmm candidate structural model; sibling rows fit different candidate space groups. | ||||||||||||||
| Davemaoite |
|
— | 44.6 ų Unknown basis |
250 | 4.104 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM3 fit for the Im3 candidate structural model; sibling rows fit different candidate space groups. | ||||||||||||||
| Davemaoite |
|
— | 44.576 ų Unknown basis |
248 | 4.092 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM3 fit for the P42/nmc candidate structural model; sibling rows fit different candidate space groups. | ||||||||||||||
| Davemaoite |
|
— | 44.576 ų Unknown basis |
249 | 4.104 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM3 fit for the Pnma candidate structural model; sibling rows fit different candidate space groups. | ||||||||||||||
| Davemaoite |
|
— | 44.588 ų Unknown basis |
248 | 4.206 | fourth-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM4 (fourth-order Birch-Murnaghan) fit for the Pm3m candidate structural model; sibling rows fit different candidate space groups with the same BM4 model. | ||||||||||||||
| Davemaoite |
|
— | 44.547 ų Unknown basis |
247 | 4.213 | fourth-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM4 fit for the I4/mcm candidate structural model; sibling rows fit different candidate space groups with the same BM4 model. | ||||||||||||||
| Davemaoite |
|
— | 44.576 ų Unknown basis |
247 | 4.218 | fourth-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM4 fit for the Imma candidate structural model; sibling rows fit different candidate space groups with the same BM4 model. | ||||||||||||||
| Davemaoite |
|
— | 44.832 ų Unknown basis |
244 | 4.236 | fourth-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM4 fit for the R3c candidate structural model; sibling rows fit different candidate space groups with the same BM4 model. | ||||||||||||||
| Davemaoite |
|
— | 44.641 ų Unknown basis |
244 | 4.261 | fourth-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM4 fit for the P4/mbm candidate structural model; sibling rows fit different candidate space groups with the same BM4 model. | ||||||||||||||
| Davemaoite |
|
— | 44.609 ų Unknown basis |
248 | 4.219 | fourth-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM4 fit for the I4/mmm candidate structural model; sibling rows fit different candidate space groups with the same BM4 model. | ||||||||||||||
| Davemaoite |
|
— | 44.61 ų Unknown basis |
247 | 4.229 | fourth-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM4 fit for the Im3 candidate structural model; sibling rows fit different candidate space groups with the same BM4 model. | ||||||||||||||
| Davemaoite |
|
— | 44.566 ų Unknown basis |
251 | 3.977 | fourth-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM4 fit for the P42/nmc candidate structural model; sibling rows fit different candidate space groups with the same BM4 model. | ||||||||||||||
| Davemaoite |
|
— | 44.588 ų Unknown basis |
246 | 4.248 | fourth-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: BM4 fit for the Pnma candidate structural model; sibling rows fit different candidate space groups with the same BM4 model. | ||||||||||||||
2002 3 EOS records On the structure and compressibility of CaSiO3 perovskite 10.1029/2001gl013523
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
300 K | 45.9 ų Unit cell |
228 | 4.300 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: VIBC calculation for the Pnma structural model; sibling rows use a different space group (Pm3m) or the VIB method without covalent correction. | ||||||||||||||
| Davemaoite |
|
300 K | 45.92 ų Unit cell |
229 | 4.300 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: VIBC calculation for the Pm3m structural model; sibling rows use a different space group (Pnma) or the VIB method without covalent correction. | ||||||||||||||
| Davemaoite |
|
300 K | 44.75 ų Unit cell |
305 | 3.500 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: VIB calculation (no covalent correction) for the Pm3m structural model; sibling rows use the covalent-corrected VIBC method instead. | ||||||||||||||
2002 1 EOS record Tetragonal structure of CaSiO3 perovskite above 20 GPa 10.1029/2002gl016148
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 45.58 ų Unit cell |
255 | 4 | Birch-Murnaghan (order unspecified) | — | Original |
2000 2 EOS records The stability and P–V–T equation of state of CaSiO3 perovskite in the Earth's lower mantle 10.1029/2000jb900183
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
300 K | 27.45 cm³/mol Molar |
236 | 3.900 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: This study's own EDXRD LHDAC fit (18-96 GPa) with V0, K0, K' fixed from Shim et al. [2000] static-compression results; only gamma0 and q fitted here. | ||||||||||||||
| Davemaoite |
|
300 K | — | 280 | 4 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: Fit of earlier 300 K DAC data to 130 GPa (Tamai/Yagi, Yagi, Tarrida/Richet, Mao 1989) with K' assumed=4; authors argue this K0 is biased high by nonhydrostatic stress. | ||||||||||||||
2000 1 EOS record Thermoelasticity of silicate perovskites and magnesiowustite and its implications for the Earth’s lower mantle 10.2138/am-2000-2-310
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 45.064 ų Unknown basis |
255.600 | 4.724 | Vinet | — | Original |
1999 1 EOS record Seismic velocities of major silicate and oxide phases of the lower mantle 10.1029/1999jb900069
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | — | 236 | 4.420 | third-order Birch-Murnaghan | — | Original |
1998 1 EOS record First‐principles determination of elastic properties of CaSiO3 perovskite at lower mantle pressures 10.1029/98gl51952
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 45.34 ų Unit cell |
241 | 4.140 | third-order Birch-Murnaghan | — | Original |
1996 8 EOS records Thermal equation of state of CaSiO3 perovskite 10.1029/95jb03254
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 45.58 ų Unit cell |
232 | 4.800 | third-order Birch-Murnaghan | — | Original | ||||||
| Davemaoite |
|
— | 45.71 ų Unit cell |
244 | 4.800 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: Refit of Mao et al. [1989] DAC data weighting remaining points equally, low-pressure amorphized data excluded; sibling rows use different weighting/exclusion schemes on same data. | ||||||||||||||
| Davemaoite |
|
— | 45.3 ų Unit cell |
282 | 4 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: Refit of Mao et al. [1989] DAC data using the entire data set weighted by pressure uncertainties; sibling rows instead exclude certain low-pressure points or weight equally. | ||||||||||||||
| Davemaoite |
|
— | 45.47 ų Unit cell |
268 | 4.300 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: Refit of Mao et al. [1989] data excluding points below 1 GPa (likely amorphization), same weighting as row 508; other sibling row weights all points equally instead. | ||||||||||||||
| Davemaoite |
|
300 K | 45.6 ų Unit cell |
233 | 4.800 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: Table 2 'Weighted' fit using all four measurement runs; sibling fits instead use only run 13 alone or an unweighted scheme on the same data. | ||||||||||||||
| Davemaoite |
|
300 K | 45.61 ų Unit cell |
229 | 4.800 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: Table 2 'Weighted, 2' fit using run 13 alone; sibling fits instead use all four runs (weighted) or an unweighted scheme. | ||||||||||||||
| Davemaoite |
|
300 K | 45.58 ų Unit cell |
233 | 4.800 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: Table 2 'Unweighted' fit using all data without pressure-uncertainty weighting; sibling fits instead apply weighting to all four runs or to run 13 alone. | ||||||||||||||
| Davemaoite |
|
— | 27.45 cm³/mol Molar |
232 | 4.800 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: New in situ synchrotron XRD (SAM-85 cubic-anvil) measurement (Table 4), a different dataset from the Mao et al. [1989] DAC-data refits reported in sibling rows. | ||||||||||||||
1996 5 EOS records First‐principles calculation of the equation‐of‐state, stability, and polar optic modes of CaSiO3 perovskite 10.1029/96gl02624
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 45.04 ų Unit cell |
241.800 | 4.150 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: Static-lattice LAPW calculation with RKmax=7 basis-set cutoff (Table 1); sibling rows use RKmax=8 or RKmax=9, giving slightly different converged EOS values. | ||||||||||||||
| Davemaoite |
|
— | 45.02 ų Unit cell |
241 | 4.160 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: Static-lattice LAPW calculation with RKmax=8 basis-set cutoff (Table 1); sibling rows use RKmax=7 or RKmax=9 instead. | ||||||||||||||
| Davemaoite |
|
— | 45.06 ų Unit cell |
238.200 | 4.180 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: Static-lattice LAPW calculation with RKmax=9 basis-set cutoff, the value the authors adopt for subsequent analysis (Table 1); sibling rows use RKmax=7 or 8. | ||||||||||||||
| Davemaoite |
|
300 K | 45.55 ų Unit cell |
237.900 | 4 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: Thermally-corrected LAPW(9) fit with K0' fixed to 4 (constrained fit, denoted by asterisk in Table 2); sibling row fits the same data with K0' free (4.29). | ||||||||||||||
| Davemaoite |
|
300 K | 45.62 ų Unit cell |
227 | 4.290 | Birch-Murnaghan (order unspecified) | — | Original | ||||||
| Why this differs from similar rows: Thermally-corrected LAPW(9) fit with K0' free (unconstrained, =4.29, per the abstract and Table 2); sibling row instead fixes K0' to 4 on the same underlying data. | ||||||||||||||
1995 2 EOS records Calculation models of structures and physical properties of CaSiO3, CaMgSi2O6, and Ca2BaSi3O9 crystals. 10.2465/minerj.17.290
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 47.34 ų Unit cell |
247 | 5.090 | unknown | — | Original | ||||||
| Why this differs from similar rows: From Table 6 static lattice-energy WMIN calculation (K0=0.247 TPa); sibling row 1287 is from Table 7's separate pressure-dependence WMIN calculation (K0=0.245 TPa). | ||||||||||||||
| Davemaoite |
|
— | — | 245 | — | unknown | — | Original | ||||||
| Why this differs from similar rows: From Table 7 pressure-dependence WMIN calculation (K0=0.245 TPa), distinct from the Table 6 static lattice-energy calculation (K0=0.247 TPa) in sibling row 1283. | ||||||||||||||
1994 2 EOS records Thermoelasticity of CaSiO3 perovskite and implications for the lower mantle 10.1029/94gl00976
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
300 K | 45.83 ų Unit cell |
280 | 4 | second-order Birch-Murnaghan | — | Original | ||||||
| Davemaoite |
|
300 K | 27.59 cm³/mol Molar |
281 | 4 | Birch-Murnaghan (order unspecified) | — | Original |
1993 3 EOS records Equation of state, elastic properties, and stability of CaSiO3 perovskite: First principles (periodic Hartree… 10.1029/93jb02175
| Phase | Composition | Tref | V₀ | K₀ (GPa) | K′ | EOS model | Method note | Origin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Davemaoite |
|
— | 44.96 ų/f.u. Formula unit |
301 | 4 | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: Uses the more complete extended basis set B (8-31G* Si, 8-51G O) in the periodic Hartree-Fock fit; sibling row uses a smaller basis set described as inadequate. | ||||||||||||||
| Davemaoite |
|
— | 44.87 ų Unit cell |
290 | 5.600 | finite strain (unspecified form) | — | Original | ||||||
| Davemaoite |
|
— | 43.96 ų Unit cell |
412 | — | third-order Birch-Murnaghan | — | Original | ||||||
| Why this differs from similar rows: Uses smaller basis set A (6-21G), explicitly described by authors as inadequate/unreliable, giving K0 45% too high and V0 about 4% too low vs the basis-B result. | ||||||||||||||