# Fe–O system

> Fe–O system: 336 accepted literature values (heat capacity / entropy / enthalpy 234, activity / EMF / Gibbs energy 97, phase transition 3, formation 2) and 2 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/FE-O.html · Markdown: https://data.orchid-project.org/systems/FE-O.md

336 accepted literature values from 1 paper(s) (experimental 3, model 333); 2 calculated phase diagram(s). 2 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: [JSON](https://data.orchid-project.org/literature/systems/FE-O.json) · [CSV](https://data.orchid-project.org/systems/FE-O.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#FE-O) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#FE-O/FeO-02Luo.json) · [phases (10)](https://data.orchid-project.org/phases/pages/FE-O.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/FE-O.html) · [Markdown](https://data.orchid-project.org/systems/FE-O.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 3 |
| model | 333 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| phase transition | 3 |
| formation | 2 |
| heat capacity / entropy / enthalpy | 234 |
| activity / EMF / Gibbs energy | 97 |

## Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Table: Assessments with a calculated phase diagram

| TDB file | Assessment | SHA-256 | Links |
|---|---|---|---|
| FeO-02Luo.tdb | R. Luoma, PhD thesis, Helsinki, 2002. | `444e225f4fad778c586debebf6166cc7b6c21ff0d0cc41b452662e848222b8d7` | [viewer](https://orchid-project.org/phase-diagrams/#FE-O/FeO-02Luo.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeO-02Luo.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeO-02Luo.json) |
| FeO-91Sun-orig.tdb | B. Sundman, J. Phase Equilib., 12, 127-40(1991). [doi:10.1007/BF02645709](https://doi.org/10.1007/BF02645709) | `214f51010594d665a06ab8a77c9a46279b29a53f0f33557a0bb56a13da570fb9` | [viewer](https://orchid-project.org/phase-diagrams/#FE-O/FeO-91Sun-orig.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeO-91Sun-orig.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeO-91Sun-orig.json) |

Table: Calculated three-phase invariants (model, mole fraction of the second component)

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| FeO-02Luo.tdb | 1852.41 | SPINEL_H11 (x(O) 0.57649) + LIQUID (x(O) 0.58105) + GAS (x(O) 1) |
| FeO-02Luo.tdb | 1801.58 | BCC_A2 (x(O) 2.900e-4) + LIQUID#2 (x(O) 0.00519) + LIQUID (x(O) 0.50589) |
| FeO-02Luo.tdb | 1692.43 | LIQUID (x(O) 0.54172) + HALITE_B1 (x(O) 0.54506) + SPINEL_H11 (x(O) 0.57095) |
| FeO-02Luo.tdb | 1664.23 | FCC_A1 (x(O) 1.000e-4) + BCC_A2 (x(O) 2.100e-4) + LIQUID (x(O) 0.50834) |
| FeO-02Luo.tdb | 1642.22 | FCC_A1 (x(O) 9.000e-5) + LIQUID (x(O) 0.50876) + HALITE_B1 (x(O) 0.51227) |
| FeO-02Luo.tdb | 1184.91 | BCC_A2 (x(O) 1.000e-5) + FCC_A1 (x(O) 1.000e-5) + HALITE_B1 (x(O) 0.51203) |
| FeO-02Luo.tdb | 832.32 | BCC_A2 (x(O) 0) + HALITE_B1 (x(O) 0.51382) + SPINEL_H11 (x(O) 0.57126) |
| FeO-91Sun-orig.tdb | 1853.49 | SPINEL_H11 (x(O) 0.57647) + ION (x(O) 0.58105) + GAS (x(O) 1) |
| FeO-91Sun-orig.tdb | 1801.98 | BCC_A2 (x(O) 2.800e-4) + ION#2 (x(O) 0.00495) + ION (x(O) 0.50554) |
| FeO-91Sun-orig.tdb | 1725.46 | SPINEL_H11 (x(O) 0.57994) + CORUNDUM_D51 (x(O) 0.6) + GAS (x(O) 1) |
| FeO-91Sun-orig.tdb | 1695.47 | ION (x(O) 0.5419) + HALITE_B1 (x(O) 0.54514) + SPINEL_H11 (x(O) 0.57095) |
| FeO-91Sun-orig.tdb | 1664.4 | FCC_A1 (x(O) 1.000e-4) + BCC_A2 (x(O) 2.100e-4) + ION (x(O) 0.5069) |
| FeO-91Sun-orig.tdb | 1642.72 | FCC_A1 (x(O) 1.000e-4) + ION (x(O) 0.50718) + HALITE_B1 (x(O) 0.51227) |
| FeO-91Sun-orig.tdb | 1184.92 | FCC_A1 (x(O) 1.000e-5) + BCC_A2 (x(O) 2.000e-5) + HALITE_B1 (x(O) 0.51203) |
| FeO-91Sun-orig.tdb | 832.32 | BCC_A2 (x(O) 0) + HALITE_B1 (x(O) 0.51382) + SPINEL_H11 (x(O) 0.57126) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/FE/FE-O.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/FE/FE-O.json) · [CALPHAD hull FeO-02Luo](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-O--FeO-02Luo.json) · [CALPHAD hull FeO-09Pov](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-O--FeO-09Pov.json) · [CALPHAD hull FeO-91Sun-LB](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-O--FeO-91Sun-LB.json) · [CALPHAD hull FeO-91Sun-orig](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-O--FeO-91Sun-orig.json) · [CALPHAD hull FeO-93Tay](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-O--FeO-93Tay.json) · [CALPHAD hull FeO-95Kow](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-O--FeO-95Kow.json) · [CALPHAD hull FeO-96Sel](https://data.orchid-project.org/hulls/calphad-sgte/FE/FE-O--FeO-96Sel.json)

## Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from [dft_parity.json](https://data.orchid-project.org/literature/dft_parity.json).

Table: Enthalpies of formation, Fe–O system (2)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| Fe0.947O |  | -265.152 kJ/mol (basis unstated) | 298.15 | model |  |  | [1] Sundman 1991 | Table 2, p. 8, row 1; `ORC-QTREREZLFQ` |  |
| Magnetite (Fe3O4) | [Fe3O4](https://data.orchid-project.org/compounds/Fe3O4.html) | -159.411 kJ/mol-atom | 298.15 | model | -157.23 (mp-aaaabcoo) | -160.234 (oqmd-1362615) | [1] Sundman 1991 | Table 3, p. 9, row 1; `ORC-WSSF4NN6NZ.75e4df` |  |

## Other properties

### Phase transition (3)

Table: Phase transition, Fe–O system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 830 K | 830 | wiistite + magnetite + ferrite | experimental | [1] Sundman 1991 | p. 1; `ORC-2OLHMLQ46F` | “Although wiistite decomposes around 830 K to magnetite and ferrite, it is possible to prevent this by rapid cooling.” |
| Phase transition | 943 K | 943 | magnetic | experimental | [1] Sundman 1991 | p. 7; `ORC-CYOUIEAN4Y` | “There is a lambda anomaly in the corundum heat capacity at 943 K, which was described using the same magnetic model as for magnetite.” |
| Phase transition | 1697 K | 1697 | liquid + magnetite | experimental | [1] Sundman 1991; _cites ref. 13_ | p. 1; `ORC-T2JGRRYD7Q` | “The first, with bcc and magnetite, and the second, with fcc and liquid, were taken from the paper by Darken and Gurry,3 and the third, with liquid and magnetite at 1697 K, from the second paper by Darken and Gurry. 13” |

### Heat capacity / entropy / enthalpy (234)

Table: Heat capacity / entropy / enthalpy, Fe–O system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Entropy; _printed: S_ | 58.734 J/mol (basis unstated)/K | 298.15 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 2; `ORC-HDFNPDYINE.0db286` |  |
| Entropy; _printed: S_ | 17.5664 J/mol-atom/K | 298.15 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 1; `ORC-DXUMFYIL4B.81607d` |  |
| Entropy; _printed: S_ | 20.8291 J/mol-atom/K | 298.15 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 1; `ORC-WSSF4NN6NZ.8d3ef1` |  |
| Entropy; _printed: S_ | 66.514 J/mol (basis unstated)/K | 350 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 3; `ORC-XZ6EEFT5XG.bffc4a` |  |
| Entropy; _printed: S_ | 21.1114 J/mol-atom/K | 350 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 2; `ORC-GAGYBNWQIZ.b3df97` |  |
| Entropy; _printed: S_ | 24.4186 J/mol-atom/K | 350 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 2; `ORC-TKEXGOLJ4I.b05571` |  |
| Entropy; _printed: S_ | 24.277 J/mol-atom/K | 400 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 3; `ORC-F2AOB5ICTT.128857` |  |
| Entropy; _printed: S_ | 27.6146 J/mol-atom/K | 400 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 3; `ORC-DVHHHG6QVP.a5c079` |  |
| Entropy; _printed: S_ | 78.917 J/mol (basis unstated)/K | 450 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 5; `ORC-MDV4FTD7FV.2ffffe` |  |
| Entropy; _printed: S_ | 27.204 J/mol-atom/K | 450 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 4; `ORC-5WK4JUOZ63.d212f9` |  |
| Entropy; _printed: S_ | 30.5881 J/mol-atom/K | 450 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 4; `ORC-GDV23SHMP3.0d4d2a` |  |
| Entropy; _printed: S_ | 84.207 J/mol (basis unstated)/K | 500 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 6; `ORC-5RGWNPCFRT.a1f6d1` |  |
| Entropy; _printed: S_ | 29.9194 J/mol-atom/K | 500 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 5; `ORC-PXRLTJVWNZ.80cb55` |  |
| Entropy; _printed: S_ | 33.3801 J/mol-atom/K | 500 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 5; `ORC-R2YON25D4Z.3e255d` |  |
| Entropy; _printed: S_ | 89.046 J/mol (basis unstated)/K | 550 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 7; `ORC-7XA4KZOJYF.7d6ea8` |  |
| Entropy; _printed: S_ | 32.4536 J/mol-atom/K | 550 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 6; `ORC-PRKQB6RJW5.1c5b27` |  |
| Entropy; _printed: S_ | 36.0254 J/mol-atom/K | 550 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 6; `ORC-ZEMKVUJYKH.bedcd6` |  |
| Entropy; _printed: S_ | 93.512 J/mol (basis unstated)/K | 600 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 8; `ORC-EJQ6CGJ4L7.851b3e` |  |
| Entropy; _printed: S_ | 34.8344 J/mol-atom/K | 600 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 7; `ORC-23UPYO277F.a16bac` |  |
| Entropy; _printed: S_ | 38.5543 J/mol-atom/K | 600 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 7; `ORC-44I2LQBPEM.a4e9b8` |  |
| Entropy; _printed: S_ | 97.665 J/mol (basis unstated)/K | 650 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 9; `ORC-QK26BBY2VY.a79cc0` |  |
| Entropy; _printed: S_ | 37.0874 J/mol-atom/K | 650 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 8; `ORC-5JY5ODZYFS.e3232e` |  |
| Entropy; _printed: S_ | 40.9937 J/mol-atom/K | 650 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 8; `ORC-N3Z7LUQP4X.d186bb` |  |
| Entropy; _printed: S_ | 101.552 J/mol (basis unstated)/K | 700 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 10; `ORC-KKZFDQ7SV5.c83c17` |  |
| Entropy; _printed: S_ | 39.236 J/mol-atom/K | 700 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 9; `ORC-FW6B24RNYV.81801f` |  |
| Entropy; _printed: S_ | 43.3709 J/mol-atom/K | 700 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 9; `ORC-RB6L7JTWML.30a41f` |  |
| Entropy; _printed: S_ | 105.209 J/mol (basis unstated)/K | 750 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 11; `ORC-IJ2QXRLN2X.e5ea16` |  |
| Entropy; _printed: S_ | 41.3014 J/mol-atom/K | 750 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 10; `ORC-N5SYCOIDLA.d13062` |  |
| Entropy; _printed: S_ | 45.7174 J/mol-atom/K | 750 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 10; `ORC-BFTRH6NCEV.c1af0b` |  |
| Entropy; _printed: S_ | 108.666 J/mol (basis unstated)/K | 800 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 12; `ORC-7NHBDJKFPA.3b96b6` |  |
| Entropy; _printed: S_ | 43.3056 J/mol-atom/K | 800 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 11; `ORC-VGMIY77WM6.28bfae` |  |
| Entropy; _printed: S_ | 48.0747 J/mol-atom/K | 800 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 11; `ORC-6WINAJFBA4.1ec534` |  |
| Entropy; _printed: S_ | 50.4043 J/mol-atom/K | 848 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 12; `ORC-IQSKWRPCUO.02725e` |  |
| Entropy; _printed: S_ | 111.947 J/mol (basis unstated)/K | 850 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 13; `ORC-W7FVKS6RVO.091cf7` |  |
| Entropy; _printed: S_ | 45.2718 J/mol-atom/K | 850 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 12; `ORC-LFFLJIKTEY.2163e2` |  |
| Entropy; _printed: S_ | 50.4833 J/mol-atom/K | 850 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 13; `ORC-E3NDWEIGTF.aafcef` |  |
| Entropy; _printed: S_ | 115.073 J/mol (basis unstated)/K | 900 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 14; `ORC-67PR3VO4BM.b0e09f` |  |
| Entropy; _printed: S_ | 47.2282 J/mol-atom/K | 900 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 13; `ORC-GN2UPTFFIZ.36ef3e` |  |
| Entropy; _printed: S_ | 52.327 J/mol-atom/K | 900 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 14; `ORC-3OZ5J2G74S.50730d` |  |
| Entropy; _printed: S_ | 118.059 J/mol (basis unstated)/K | 950 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 15; `ORC-FH57UFGBIB.0e9511` |  |
| Entropy; _printed: S_ | 49.213 J/mol-atom/K | 950 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 14; `ORC-FGUYGU7ZQR.6d9e38` |  |
| Entropy; _printed: S_ | 53.9933 J/mol-atom/K | 950 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 15; `ORC-FNZ4DJJABX.b0bb46` |  |
| Entropy; _printed: S_ | 49.415 J/mol-atom/K | 955 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 15; `ORC-FGA677SMEP.1f3518` |  |
| Entropy; _printed: S_ | 120.922 J/mol (basis unstated)/K | 1000 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 16; `ORC-OIOYMX4EEZ.941590` |  |
| Entropy; _printed: S_ | 50.8378 J/mol-atom/K | 1000 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 16; `ORC-DVA27VY7ZS.10f1e8` |  |
| Entropy; _printed: S_ | 55.5367 J/mol-atom/K | 1000 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 16; `ORC-4SNGVZBIJR.243ec2` |  |
| Entropy; _printed: S_ | 123.671 J/mol (basis unstated)/K | 1050 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 17; `ORC-WS47STUJAL.f68e98` |  |
| Entropy; _printed: S_ | 52.2816 J/mol-atom/K | 1050 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 17; `ORC-J5QFYPYIUP.86e51e` |  |
| Entropy; _printed: S_ | 56.9843 J/mol-atom/K | 1050 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 17; `ORC-GLP3WJJQL6.45c10e` |  |
| Entropy; _printed: S_ | 126.319 J/mol (basis unstated)/K | 1100 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 18; `ORC-CE3R77GAIT.55b641` |  |
| Entropy; _printed: S_ | 53.6256 J/mol-atom/K | 1100 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 18; `ORC-TOQCHKTD7O.54e023` |  |
| Entropy; _printed: S_ | 58.3523 J/mol-atom/K | 1100 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 18; `ORC-HJKM4D66BC.484c5a` |  |
| Entropy; _printed: S_ | 128.874 J/mol (basis unstated)/K | 1150 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 19; `ORC-K5MDMRMU4J.3d528b` |  |
| Entropy; _printed: S_ | 54.8906 J/mol-atom/K | 1150 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 19; `ORC-CRVVQKGW6A.d947e4` |  |
| Entropy; _printed: S_ | 59.6523 J/mol-atom/K | 1150 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 19; `ORC-46XTUJVEVH.d97efb` |  |
| Entropy; _printed: S_ | 131.344 J/mol (basis unstated)/K | 1200 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 20; `ORC-SZR7KWB2GC.87ea1f` |  |
| Entropy; _printed: S_ | 56.0894 J/mol-atom/K | 1200 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 20; `ORC-VOSWRFAYPZ.a3512c` |  |
| Entropy; _printed: S_ | 60.8929 J/mol-atom/K | 1200 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 20; `ORC-XUQJHX6LBW.6d925a` |  |
| Entropy; _printed: S_ | 133.736 J/mol (basis unstated)/K | 1250 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 21; `ORC-PV5GHVTZZ7.8f7d9b` |  |
| Entropy; _printed: S_ | 57.2308 J/mol-atom/K | 1250 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 21; `ORC-6SFAYU2VIO.9991b8` |  |
| Entropy; _printed: S_ | 62.0806 J/mol-atom/K | 1250 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 21; `ORC-NECXTTXU4O.5121ac` |  |
| Entropy; _printed: S_ | 136.056 J/mol (basis unstated)/K | 1300 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 22; `ORC-CW3XXW4EG6.dfca6b` |  |
| Entropy; _printed: S_ | 58.3216 J/mol-atom/K | 1300 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 22; `ORC-PW5HEQL2XT.fa3c6b` |  |
| Entropy; _printed: S_ | 63.2211 J/mol-atom/K | 1300 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 22; `ORC-FZ5GZXGJ2Z.8d2641` |  |
| Entropy; _printed: S_ | 138.31 J/mol (basis unstated)/K | 1350 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 23; `ORC-ZDHXAEIG3G.6dc64a` |  |
| Entropy; _printed: S_ | 59.367 J/mol-atom/K | 1350 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 23; `ORC-F5PDSDC43S.8e2542` |  |
| Entropy; _printed: S_ | 64.3189 J/mol-atom/K | 1350 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 23; `ORC-IKVT4DWICY.18ec5c` |  |
| Entropy; _printed: S_ | 140.502 J/mol (basis unstated)/K | 1400 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 24; `ORC-27V2GEERS2.6ef1e5` |  |
| Entropy; _printed: S_ | 60.3712 J/mol-atom/K | 1400 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 24; `ORC-L4HOWXXXPY.eeb151` |  |
| Entropy; _printed: S_ | 65.3777 J/mol-atom/K | 1400 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 24; `ORC-64PAQO243D.98bb8b` |  |
| Entropy; _printed: S_ | 142.636 J/mol (basis unstated)/K | 1450 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 25; `ORC-AV7QQPOOPQ.81fc17` |  |
| Entropy; _printed: S_ | 61.338 J/mol-atom/K | 1450 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 25; `ORC-WHJM7EAVNH.786aa6` |  |
| Entropy; _printed: S_ | 66.4009 J/mol-atom/K | 1450 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 25; `ORC-XB2AWHAQXQ.bc7a30` |  |
| Entropy; _printed: S_ | 144.717 J/mol (basis unstated)/K | 1500 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 26; `ORC-XFODV5AJLJ.1b51e8` |  |
| Entropy; _printed: S_ | 62.2702 J/mol-atom/K | 1500 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 26; `ORC-VXXK6LJJZV.e4a4ee` |  |
| Entropy; _printed: S_ | 67.3913 J/mol-atom/K | 1500 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 26; `ORC-2ZQOVYHIZN.25a397` |  |
| Entropy; _printed: S_ | 146.749 J/mol (basis unstated)/K | 1550 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 27; `ORC-C5QNWC3N5K.78c507` |  |
| Entropy; _printed: S_ | 63.1708 J/mol-atom/K | 1550 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 27; `ORC-6IMBDWNHC7.6b4501` |  |
| Entropy; _printed: S_ | 68.3514 J/mol-atom/K | 1550 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 27; `ORC-AM65INQKVT.407632` |  |
| Entropy; _printed: S_ | 148.733 J/mol (basis unstated)/K | 1600 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 28; `ORC-WUQJCBTJS2.661d8c` |  |
| Entropy; _printed: S_ | 64.0416 J/mol-atom/K | 1600 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 28; `ORC-OSHFV4KQTC.7ff4ca` |  |
| Entropy; _printed: S_ | 69.2834 J/mol-atom/K | 1600 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 28; `ORC-QCFGY6WBNJ.eb2ca2` |  |
| Entropy; _printed: S_ | 150.674 J/mol (basis unstated)/K | 1650 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 29; `ORC-JA4PPWLAB3.304e9e` |  |
| Entropy; _printed: S_ | 64.8848 J/mol-atom/K | 1650 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 29; `ORC-N6AFKNI5UU.031c5e` |  |
| Entropy; _printed: S_ | 70.1894 J/mol-atom/K | 1650 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 29; `ORC-LBXNTOMJFT.8b5606` |  |
| Entropy; _printed: S_ | 152.573 J/mol (basis unstated)/K | 1700 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 30; `ORC-JSFGDRKK2Z.9e16a4` |  |
| Entropy; _printed: S_ | 65.7024 J/mol-atom/K | 1700 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 30; `ORC-67USMY7AYL.f9b954` |  |
| Entropy; _printed: S_ | 71.071 J/mol-atom/K | 1700 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 30; `ORC-AXFJ64KD2C.81f195` |  |
| Entropy; _printed: S_ | 66.496 J/mol-atom/K | 1750 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 31; `ORC-VJ6LCS6IXI.42acc8` |  |
| Entropy; _printed: S_ | 71.9297 J/mol-atom/K | 1750 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 31; `ORC-WDFTYZILZ6.764719` |  |
| Entropy; _printed: S_ | 67.2668 J/mol-atom/K | 1800 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 32; `ORC-BLVT7QUBEQ.99ad7e` |  |
| Entropy; _printed: S_ | 72.7671 J/mol-atom/K | 1800 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 32; `ORC-76UXK2A4VN.fe0a71` |  |
| Entropy; _printed: S_ | 68.0162 J/mol-atom/K | 1850 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 33; `ORC-HYI32PTQYW.77f38b` |  |
| Entropy; _printed: S_ | 73.5844 J/mol-atom/K | 1850 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 33; `ORC-BSGJPO5DYV.e60073` |  |
| Entropy; _printed: S_ | 68.7454 J/mol-atom/K | 1900 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 34; `ORC-Q44ZAZSBUX.628eda` |  |
| Entropy; _printed: S_ | 74.3829 J/mol-atom/K | 1900 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 34; `ORC-CSKRGNO5G6.3df1df` |  |
| Heat capacity; _printed: Cp_ | 48.2381 J/mol (basis unstated)/K | 298.15 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 2; `ORC-HDFNPDYINE.7b2fd8` |  |
| Heat capacity; _printed: Cp_ | 21.0966 J/mol-atom/K | 298.15 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 1; `ORC-DXUMFYIL4B.3cbb1b` |  |
| Heat capacity; _printed: Cp_ | 21.4641 J/mol-atom/K | 298.15 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 1; `ORC-WSSF4NN6NZ.14d3fd` |  |
| Heat capacity; _printed: Cp_ | 48.8176 J/mol (basis unstated)/K | 350 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 3; `ORC-XZ6EEFT5XG.00f43b` |  |
| Heat capacity; _printed: Cp_ | 23.0376 J/mol-atom/K | 350 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 2; `ORC-GAGYBNWQIZ.d2ca24` |  |
| Heat capacity; _printed: Cp_ | 23.1217 J/mol-atom/K | 350 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 2; `ORC-TKEXGOLJ4I.8c337e` |  |
| Heat capacity; _printed: Cp_ | 49.3764 J/mol (basis unstated)/K | 400 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 4; `ORC-J5IUHD747I.4428a0` |  |
| Heat capacity; _printed: Cp_ | 24.3394 J/mol-atom/K | 400 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 3; `ORC-F2AOB5ICTT.e7e86b` |  |
| Heat capacity; _printed: Cp_ | 24.363 J/mol-atom/K | 400 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 3; `ORC-DVHHHG6QVP.29df31` |  |
| Heat capacity; _printed: Cp_ | 49.9352 J/mol (basis unstated)/K | 450 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 5; `ORC-MDV4FTD7FV.1426fc` |  |
| Heat capacity; _printed: Cp_ | 25.3464 J/mol-atom/K | 450 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 4; `ORC-5WK4JUOZ63.0ad2a4` |  |
| Heat capacity; _printed: Cp_ | 25.4539 J/mol-atom/K | 450 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 4; `ORC-GDV23SHMP3.d2c430` |  |
| Heat capacity; _printed: Cp_ | 50.494 J/mol (basis unstated)/K | 500 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 6; `ORC-5RGWNPCFRT.67ccd2` |  |
| Heat capacity; _printed: Cp_ | 26.199 J/mol-atom/K | 500 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 5; `ORC-PXRLTJVWNZ.02987a` |  |
| Heat capacity; _printed: Cp_ | 26.5057 J/mol-atom/K | 500 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 5; `ORC-R2YON25D4Z.032e0d` |  |
| Heat capacity; _printed: Cp_ | 51.0529 J/mol (basis unstated)/K | 550 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 7; `ORC-7XA4KZOJYF.442cf2` |  |
| Heat capacity; _printed: Cp_ | 26.9826 J/mol-atom/K | 550 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 6; `ORC-PRKQB6RJW5.a89dc4` |  |
| Heat capacity; _printed: Cp_ | 27.5956 J/mol-atom/K | 550 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 6; `ORC-ZEMKVUJYKH.63315c` |  |
| Heat capacity; _printed: Cp_ | 51.6117 J/mol (basis unstated)/K | 600 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 8; `ORC-EJQ6CGJ4L7.631206` |  |
| Heat capacity; _printed: Cp_ | 27.755 J/mol-atom/K | 600 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 7; `ORC-23UPYO277F.5d558c` |  |
| Heat capacity; _printed: Cp_ | 28.7901 J/mol-atom/K | 600 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 7; `ORC-44I2LQBPEM.b8ed0b` |  |
| Heat capacity; _printed: Cp_ | 52.1705 J/mol (basis unstated)/K | 650 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 9; `ORC-QK26BBY2VY.f270b1` |  |
| Heat capacity; _printed: Cp_ | 28.562 J/mol-atom/K | 650 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 8; `ORC-5JY5ODZYFS.bafe69` |  |
| Heat capacity; _printed: Cp_ | 30.1656 J/mol-atom/K | 650 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 8; `ORC-N3Z7LUQP4X.fbe1cb` |  |
| Heat capacity; _printed: Cp_ | 52.7293 J/mol (basis unstated)/K | 700 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 10; `ORC-KKZFDQ7SV5.c7e44f` |  |
| Heat capacity; _printed: Cp_ | 29.4484 J/mol-atom/K | 700 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 9; `ORC-FW6B24RNYV.d60d9c` |  |
| Heat capacity; _printed: Cp_ | 31.8306 J/mol-atom/K | 700 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 9; `ORC-RB6L7JTWML.3dd974` |  |
| Heat capacity; _printed: Cp_ | 53.2881 J/mol (basis unstated)/K | 750 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 11; `ORC-IJ2QXRLN2X.c08981` |  |
| Heat capacity; _printed: Cp_ | 30.4674 J/mol-atom/K | 750 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 10; `ORC-N5SYCOIDLA.bffd1e` |  |
| Heat capacity; _printed: Cp_ | 33.9661 J/mol-atom/K | 750 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 10; `ORC-BFTRH6NCEV.2483ef` |  |
| Heat capacity; _printed: Cp_ | 53.8469 J/mol (basis unstated)/K | 800 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 12; `ORC-7NHBDJKFPA.99410e` |  |
| Heat capacity; _printed: Cp_ | 31.695 J/mol-atom/K | 800 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 11; `ORC-VGMIY77WM6.bbd450` |  |
| Heat capacity; _printed: Cp_ | 36.8953 J/mol-atom/K | 800 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 11; `ORC-6WINAJFBA4.b84e2c` |  |
| Heat capacity; _printed: Cp_ | 41.003 J/mol-atom/K | 848 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 12; `ORC-IQSKWRPCUO.13621b` |  |
| Heat capacity; _printed: Cp_ | 54.4058 J/mol (basis unstated)/K | 850 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 13; `ORC-W7FVKS6RVO.4c1df6` |  |
| Heat capacity; _printed: Cp_ | 33.251 J/mol-atom/K | 850 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 12; `ORC-LFFLJIKTEY.b2a207` |  |
| Heat capacity; _printed: Cp_ | 32.2516 J/mol-atom/K | 850 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 13; `ORC-E3NDWEIGTF.97c000` |  |
| Heat capacity; _printed: Cp_ | 54.9646 J/mol (basis unstated)/K | 900 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 14; `ORC-67PR3VO4BM.c01ced` |  |
| Heat capacity; _printed: Cp_ | 35.3362 J/mol-atom/K | 900 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 13; `ORC-GN2UPTFFIZ.2a69a7` |  |
| Heat capacity; _printed: Cp_ | 30.2089 J/mol-atom/K | 900 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 14; `ORC-3OZ5J2G74S.1fc778` |  |
| Heat capacity; _printed: Cp_ | 55.5234 J/mol (basis unstated)/K | 950 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 15; `ORC-FH57UFGBIB.80ad44` |  |
| Heat capacity; _printed: Cp_ | 38.2956 J/mol-atom/K | 950 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 14; `ORC-FGUYGU7ZQR.4c3793` |  |
| Heat capacity; _printed: Cp_ | 29.276 J/mol-atom/K | 950 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 15; `ORC-FNZ4DJJABX.a6d7fa` |  |
| Heat capacity; _printed: Cp_ | 38.6596 J/mol-atom/K | 955 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 15; `ORC-FGA677SMEP.1d8a8f` |  |
| Heat capacity; _printed: Cp_ | 56.0822 J/mol (basis unstated)/K | 1000 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 16; `ORC-OIOYMX4EEZ.082faa` |  |
| Heat capacity; _printed: Cp_ | 30.093 J/mol-atom/K | 1000 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 16; `ORC-DVA27VY7ZS.14b0a3` |  |
| Heat capacity; _printed: Cp_ | 28.7849 J/mol-atom/K | 1000 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 16; `ORC-4SNGVZBIJR.26590e` |  |
| Heat capacity; _printed: Cp_ | 56.641 J/mol (basis unstated)/K | 1050 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 17; `ORC-WS47STUJAL.2e1a23` |  |
| Heat capacity; _printed: Cp_ | 29.1766 J/mol-atom/K | 1050 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 17; `ORC-J5QFYPYIUP.404333` |  |
| Heat capacity; _printed: Cp_ | 28.5099 J/mol-atom/K | 1050 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 17; `ORC-GLP3WJJQL6.26da1a` |  |
| Heat capacity; _printed: Cp_ | 57.1999 J/mol (basis unstated)/K | 1100 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 18; `ORC-CE3R77GAIT.c6ba9a` |  |
| Heat capacity; _printed: Cp_ | 28.6406 J/mol-atom/K | 1100 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 18; `ORC-TOQCHKTD7O.e3da38` |  |
| Heat capacity; _printed: Cp_ | 28.3577 J/mol-atom/K | 1100 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 18; `ORC-HJKM4D66BC.10888f` |  |
| Heat capacity; _printed: Cp_ | 57.7587 J/mol (basis unstated)/K | 1150 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 19; `ORC-K5MDMRMU4J.e56947` |  |
| Heat capacity; _printed: Cp_ | 28.293 J/mol-atom/K | 1150 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 19; `ORC-CRVVQKGW6A.511bf7` |  |
| Heat capacity; _printed: Cp_ | 28.2827 J/mol-atom/K | 1150 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 19; `ORC-46XTUJVEVH.b5fa86` |  |
| Heat capacity; _printed: Cp_ | 58.3175 J/mol (basis unstated)/K | 1200 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 20; `ORC-SZR7KWB2GC.513701` |  |
| Heat capacity; _printed: Cp_ | 28.0524 J/mol-atom/K | 1200 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 20; `ORC-VOSWRFAYPZ.062e1c` |  |
| Heat capacity; _printed: Cp_ | 28.2593 J/mol-atom/K | 1200 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 20; `ORC-XUQJHX6LBW.df65b3` |  |
| Heat capacity; _printed: Cp_ | 58.8763 J/mol (basis unstated)/K | 1250 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 21; `ORC-PV5GHVTZZ7.14c8db` |  |
| Heat capacity; _printed: Cp_ | 27.879 J/mol-atom/K | 1250 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 21; `ORC-6SFAYU2VIO.c9900c` |  |
| Heat capacity; _printed: Cp_ | 28.272 J/mol-atom/K | 1250 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 21; `ORC-NECXTTXU4O.f9cf36` |  |
| Heat capacity; _printed: Cp_ | 59.4351 J/mol (basis unstated)/K | 1300 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 22; `ORC-CW3XXW4EG6.af2b2e` |  |
| Heat capacity; _printed: Cp_ | 27.7504 J/mol-atom/K | 1300 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 22; `ORC-PW5HEQL2XT.fd9d04` |  |
| Heat capacity; _printed: Cp_ | 28.3106 J/mol-atom/K | 1300 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 22; `ORC-FZ5GZXGJ2Z.d43c09` |  |
| Heat capacity; _printed: Cp_ | 59.9939 J/mol (basis unstated)/K | 1350 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 23; `ORC-ZDHXAEIG3G.a7b4ad` |  |
| Heat capacity; _printed: Cp_ | 27.6534 J/mol-atom/K | 1350 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 23; `ORC-F5PDSDC43S.b9a864` |  |
| Heat capacity; _printed: Cp_ | 28.3683 J/mol-atom/K | 1350 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 23; `ORC-IKVT4DWICY.3b6d6c` |  |
| Heat capacity; _printed: Cp_ | 60.5528 J/mol (basis unstated)/K | 1400 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 24; `ORC-27V2GEERS2.03f783` |  |
| Heat capacity; _printed: Cp_ | 27.5794 J/mol-atom/K | 1400 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 24; `ORC-L4HOWXXXPY.0cd4d1` |  |
| Heat capacity; _printed: Cp_ | 28.4403 J/mol-atom/K | 1400 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 24; `ORC-64PAQO243D.9eb6ef` |  |
| Heat capacity; _printed: Cp_ | 61.1116 J/mol (basis unstated)/K | 1450 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 25; `ORC-AV7QQPOOPQ.ab16e8` |  |
| Heat capacity; _printed: Cp_ | 27.5222 J/mol-atom/K | 1450 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 25; `ORC-WHJM7EAVNH.8ea395` |  |
| Heat capacity; _printed: Cp_ | 28.523 J/mol-atom/K | 1450 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 25; `ORC-XB2AWHAQXQ.c6400d` |  |
| Heat capacity; _printed: Cp_ | 61.6704 J/mol (basis unstated)/K | 1500 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 26; `ORC-XFODV5AJLJ.f4a983` |  |
| Heat capacity; _printed: Cp_ | 27.478 J/mol-atom/K | 1500 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 26; `ORC-VXXK6LJJZV.131798` |  |
| Heat capacity; _printed: Cp_ | 28.6139 J/mol-atom/K | 1500 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 26; `ORC-2ZQOVYHIZN.0914a7` |  |
| Heat capacity; _printed: Cp_ | 62.2292 J/mol (basis unstated)/K | 1550 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 27; `ORC-C5QNWC3N5K.da18b2` |  |
| Heat capacity; _printed: Cp_ | 27.4434 J/mol-atom/K | 1550 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 27; `ORC-6IMBDWNHC7.9e84b2` |  |
| Heat capacity; _printed: Cp_ | 28.7111 J/mol-atom/K | 1550 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 27; `ORC-AM65INQKVT.f2819f` |  |
| Heat capacity; _printed: Cp_ | 62.788 J/mol (basis unstated)/K | 1600 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 28; `ORC-WUQJCBTJS2.6538db` |  |
| Heat capacity; _printed: Cp_ | 27.4166 J/mol-atom/K | 1600 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 28; `ORC-OSHFV4KQTC.c5c76a` |  |
| Heat capacity; _printed: Cp_ | 28.8133 J/mol-atom/K | 1600 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 28; `ORC-QCFGY6WBNJ.13c648` |  |
| Heat capacity; _printed: Cp_ | 63.3469 J/mol (basis unstated)/K | 1650 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 29; `ORC-JA4PPWLAB3.d7f99e` |  |
| Heat capacity; _printed: Cp_ | 27.3956 J/mol-atom/K | 1650 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 29; `ORC-N6AFKNI5UU.f8ebea` |  |
| Heat capacity; _printed: Cp_ | 28.9193 J/mol-atom/K | 1650 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 29; `ORC-LBXNTOMJFT.fe9c2b` |  |
| Heat capacity; _printed: Cp_ | 63.9057 J/mol (basis unstated)/K | 1700 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 30; `ORC-JSFGDRKK2Z.a34efd` |  |
| Heat capacity; _printed: Cp_ | 27.379 J/mol-atom/K | 1700 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 30; `ORC-67USMY7AYL.9dd19b` |  |
| Heat capacity; _printed: Cp_ | 29.0284 J/mol-atom/K | 1700 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 30; `ORC-AXFJ64KD2C.65a25e` |  |
| Heat capacity; _printed: Cp_ | 27.3662 J/mol-atom/K | 1750 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 31; `ORC-VJ6LCS6IXI.bbb86f` |  |
| Heat capacity; _printed: Cp_ | 29.1399 J/mol-atom/K | 1750 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 31; `ORC-WDFTYZILZ6.257cfc` |  |
| Heat capacity; _printed: Cp_ | 27.3564 J/mol-atom/K | 1800 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 32; `ORC-BLVT7QUBEQ.3873ff` |  |
| Heat capacity; _printed: Cp_ | 29.2531 J/mol-atom/K | 1800 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 32; `ORC-76UXK2A4VN.ed8c20` |  |
| Heat capacity; _printed: Cp_ | 27.3488 J/mol-atom/K | 1850 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 33; `ORC-HYI32PTQYW.47905b` |  |
| Heat capacity; _printed: Cp_ | 29.3679 J/mol-atom/K | 1850 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 33; `ORC-BSGJPO5DYV.28a485` |  |
| Heat capacity; _printed: Cp_ | 27.343 J/mol-atom/K | 1900 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 34; `ORC-Q44ZAZSBUX.62b865` |  |
| Heat capacity; _printed: Cp_ | 29.484 J/mol-atom/K | 1900 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 34; `ORC-CSKRGNO5G6.b7b330` |  |
| Heat content; _printed: H-H(298.15)_ | 0 J/mol | 298.15 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 1; `ORC-WSSF4NN6NZ.e31468` |  |
| Heat content; _printed: H-H(298.15)_ | 2516.2 J/mol | 350 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 3; `ORC-XZ6EEFT5XG.1b205d` |  |
| Heat content; _printed: H-H(298.15)_ | 8136 J/mol | 350 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 2; `ORC-TKEXGOLJ4I.f94112` |  |
| Heat content; _printed: H-H(298.15)_ | 4971 J/mol | 400 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 4; `ORC-J5IUHD747I.d25433` |  |
| Heat content; _printed: H-H(298.15)_ | 16519 J/mol | 400 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 3; `ORC-DVHHHG6QVP.90d29c` |  |
| Heat content; _printed: H-H(298.15)_ | 7453.8 J/mol | 450 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 5; `ORC-MDV4FTD7FV.c4a105` |  |
| Heat content; _printed: H-H(298.15)_ | 25359 J/mol | 450 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 4; `ORC-GDV23SHMP3.c9ff71` |  |
| Heat content; _printed: H-H(298.15)_ | 9964.5 J/mol | 500 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 6; `ORC-5RGWNPCFRT.a0415b` |  |
| Heat content; _printed: H-H(298.15)_ | 34637 J/mol | 500 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 5; `ORC-R2YON25D4Z.7a589e` |  |
| Heat content; _printed: H-H(298.15)_ | 12503.2 J/mol | 550 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 7; `ORC-7XA4KZOJYF.b99a79` |  |
| Heat content; _printed: H-H(298.15)_ | 44355 J/mol | 550 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 6; `ORC-ZEMKVUJYKH.cacf0e` |  |
| Heat content; _printed: H-H(298.15)_ | 15069.8 J/mol | 600 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 8; `ORC-EJQ6CGJ4L7.04681f` |  |
| Heat content; _printed: H-H(298.15)_ | 54531 J/mol | 600 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 7; `ORC-44I2LQBPEM.4ba8b3` |  |
| Heat content; _printed: H-H(298.15)_ | 17664.4 J/mol | 650 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 9; `ORC-QK26BBY2VY.3189d5` |  |
| Heat content; _printed: H-H(298.15)_ | 65201 J/mol | 650 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 8; `ORC-N3Z7LUQP4X.084551` |  |
| Heat content; _printed: H-H(298.15)_ | 76432 J/mol | 700 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 9; `ORC-RB6L7JTWML.f58e6f` |  |
| Heat content; _printed: H-H(298.15)_ | 88340 J/mol | 750 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 10; `ORC-BFTRH6NCEV.5c7c35` |  |
| Heat content; _printed: H-H(298.15)_ | 101130 J/mol | 800 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 11; `ORC-6WINAJFBA4.7a0391` |  |
| Heat content; _printed: H-H(298.15)_ | 114570 J/mol | 848 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 12; `ORC-IQSKWRPCUO.4cb6ce` |  |
| Heat content; _printed: H-H(298.15)_ | 115039 J/mol | 850 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 13; `ORC-E3NDWEIGTF.c53e3c` |  |
| Heat content; _printed: H-H(298.15)_ | 126326 J/mol | 900 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 14; `ORC-3OZ5J2G74S.fbb481` |  |
| Heat content; _printed: H-H(298.15)_ | 137111 J/mol | 950 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 15; `ORC-FNZ4DJJABX.a671a5` |  |
| Heat content; _printed: H-H(298.15)_ | 147642 J/mol | 1000 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 16; `ORC-4SNGVZBIJR.c6c66c` |  |
| Heat content; _printed: H-H(298.15)_ | 158025 J/mol | 1050 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 17; `ORC-GLP3WJJQL6.966178` |  |
| Heat content; _printed: H-H(298.15)_ | 168317 J/mol | 1100 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 18; `ORC-HJKM4D66BC.2a9806` |  |
| Heat content; _printed: H-H(298.15)_ | 178553 J/mol | 1150 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 19; `ORC-46XTUJVEVH.b82e12` |  |
| Heat content; _printed: H-H(298.15)_ | 188755 J/mol | 1200 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 20; `ORC-XUQJHX6LBW.de614c` |  |
| Heat content; _printed: H-H(298.15)_ | 198938 J/mol | 1250 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 21; `ORC-NECXTTXU4O.f50512` |  |
| Heat content; _printed: H-H(298.15)_ | 209116 J/mol | 1300 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 22; `ORC-FZ5GZXGJ2Z.d50121` |  |
| Heat content; _printed: H-H(298.15)_ | 219297 J/mol | 1350 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 23; `ORC-IKVT4DWICY.94aff9` |  |
| Heat content; _printed: H-H(298.15)_ | 229487 J/mol | 1400 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 24; `ORC-64PAQO243D.fdc9ec` |  |
| Heat content; _printed: H-H(298.15)_ | 239692 J/mol | 1450 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 25; `ORC-XB2AWHAQXQ.5386c0` |  |
| Heat content; _printed: H-H(298.15)_ | 249917 J/mol | 1500 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 26; `ORC-2ZQOVYHIZN.1ed740` |  |
| Heat content; _printed: H-H(298.15)_ | 260166 J/mol | 1550 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 27; `ORC-AM65INQKVT.520107` |  |
| Heat content; _printed: H-H(298.15)_ | 270441 J/mol | 1600 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 28; `ORC-QCFGY6WBNJ.19e045` |  |
| Heat content; _printed: H-H(298.15)_ | 280745 J/mol | 1650 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 29; `ORC-LBXNTOMJFT.94ccb4` |  |
| Heat content; _printed: H-H(298.15)_ | 291081 J/mol | 1700 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 30; `ORC-AXFJ64KD2C.2fb4e1` |  |
| Heat content; _printed: H-H(298.15)_ | 301450 J/mol | 1750 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 31; `ORC-WDFTYZILZ6.80f389` |  |
| Heat content; _printed: H-H(298.15)_ | 311854 J/mol | 1800 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 32; `ORC-76UXK2A4VN.c55ae1` |  |
| Heat content; _printed: H-H(298.15)_ | 322295 J/mol | 1850 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 33; `ORC-BSGJPO5DYV.cbee32` |  |
| Heat content; _printed: H-H(298.15)_ | 332773 J/mol | 1900 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 34; `ORC-CSKRGNO5G6.b176c0` |  |

### Activity / EMF / Gibbs energy (97)

Table: Activity / EMF / Gibbs energy, Fe–O system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Gibbs energy; _printed: G_ | -282664 J/mol | 298.15 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 2; `ORC-HDFNPDYINE.2076be` |  |
| Gibbs energy; _printed: G_ | -849474 J/mol | 298.15 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 1; `ORC-DXUMFYIL4B.6e74ca` |  |
| Gibbs energy; _printed: G_ | -1159210 J/mol | 298.15 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 1; `ORC-WSSF4NN6NZ.09ccc1` |  |
| Gibbs energy; _printed: G_ | -285916 J/mol | 350 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 3; `ORC-XZ6EEFT5XG.5c978e` |  |
| Gibbs energy; _printed: G_ | -854493 J/mol | 350 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 2; `ORC-GAGYBNWQIZ.0584d8` |  |
| Gibbs energy; _printed: G_ | -1167570 J/mol | 350 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 2; `ORC-TKEXGOLJ4I.12c0b0` |  |
| Gibbs energy; _printed: G_ | -289409 J/mol | 400 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 4; `ORC-J5IUHD747I.d5513c` |  |
| Gibbs energy; _printed: G_ | -860172 J/mol | 400 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 3; `ORC-F2AOB5ICTT.d943f2` |  |
| Gibbs energy; _printed: G_ | -1176680 J/mol | 400 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 3; `ORC-DVHHHG6QVP.d4951f` |  |
| Gibbs energy; _printed: G_ | -293211 J/mol | 450 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 5; `ORC-MDV4FTD7FV.5c2da4` |  |
| Gibbs energy; _printed: G_ | -866612 J/mol | 450 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 4; `ORC-5WK4JUOZ63.9d9766` |  |
| Gibbs energy; _printed: G_ | -1186870 J/mol | 450 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 4; `ORC-GDV23SHMP3.7f5a0a` |  |
| Gibbs energy; _printed: G_ | -297292 J/mol | 500 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 6; `ORC-5RGWNPCFRT.87849a` |  |
| Gibbs energy; _printed: G_ | -873756 J/mol | 500 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 5; `ORC-PXRLTJVWNZ.c9c4df` |  |
| Gibbs energy; _printed: G_ | -1198070 J/mol | 500 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 5; `ORC-R2YON25D4Z.480dbc` |  |
| Gibbs energy; _printed: G_ | -301625 J/mol | 550 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 7; `ORC-7XA4KZOJYF.8c49f0` |  |
| Gibbs energy; _printed: G_ | -881557 J/mol | 550 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 6; `ORC-PRKQB6RJW5.23cc0a` |  |
| Gibbs energy; _printed: G_ | -1210220 J/mol | 550 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 6; `ORC-ZEMKVUJYKH.11dc6f` |  |
| Gibbs energy; _printed: G_ | -306190 J/mol | 600 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 8; `ORC-EJQ6CGJ4L7.4bf3aa` |  |
| Gibbs energy; _printed: G_ | -889970 J/mol | 600 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 7; `ORC-23UPYO277F.0059aa` |  |
| Gibbs energy; _printed: G_ | -1223270 J/mol | 600 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 7; `ORC-44I2LQBPEM.e6f68b` |  |
| Gibbs energy; _printed: G_ | -310971 J/mol | 650 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 9; `ORC-QK26BBY2VY.d8800b` |  |
| Gibbs energy; _printed: G_ | -898963 J/mol | 650 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 8; `ORC-5JY5ODZYFS.24f4f4` |  |
| Gibbs energy; _printed: G_ | -1237200 J/mol | 650 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 8; `ORC-N3Z7LUQP4X.65c2ea` |  |
| Gibbs energy; _printed: G_ | -315952 J/mol | 700 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 10; `ORC-KKZFDQ7SV5.fe85e7` |  |
| Gibbs energy; _printed: G_ | -908506 J/mol | 700 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 9; `ORC-FW6B24RNYV.1bf0f5` |  |
| Gibbs energy; _printed: G_ | -1251960 J/mol | 700 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 9; `ORC-RB6L7JTWML.659b69` |  |
| Gibbs energy; _printed: G_ | -321122 J/mol | 750 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 11; `ORC-IJ2QXRLN2X.0821a6` |  |
| Gibbs energy; _printed: G_ | -918574 J/mol | 750 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 10; `ORC-N5SYCOIDLA.b464fc` |  |
| Gibbs energy; _printed: G_ | -1267550 J/mol | 750 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 10; `ORC-BFTRH6NCEV.b44b5f` |  |
| Gibbs energy; _printed: G_ | -326470 J/mol | 800 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 12; `ORC-7NHBDJKFPA.7ff074` |  |
| Gibbs energy; _printed: G_ | -929151 J/mol | 800 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 11; `ORC-VGMIY77WM6.6668af` |  |
| Gibbs energy; _printed: G_ | -1283960 J/mol | 800 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 11; `ORC-6WINAJFBA4.7dfcdd` |  |
| Gibbs energy; _printed: G_ | -1300510 J/mol | 848 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 12; `ORC-IQSKWRPCUO.368923` |  |
| Gibbs energy; _printed: G_ | -331986 J/mol | 850 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 13; `ORC-W7FVKS6RVO.6f1e76` |  |
| Gibbs energy; _printed: G_ | -940224 J/mol | 850 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 12; `ORC-LFFLJIKTEY.9d3ada` |  |
| Gibbs energy; _printed: G_ | -1301210 J/mol | 850 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 13; `ORC-E3NDWEIGTF.49c080` |  |
| Gibbs energy; _printed: G_ | -337662 J/mol | 900 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 14; `ORC-67PR3VO4BM.bb787c` |  |
| Gibbs energy; _printed: G_ | -951786 J/mol | 900 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 13; `ORC-GN2UPTFFIZ.380836` |  |
| Gibbs energy; _printed: G_ | -1319210 J/mol | 900 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 14; `ORC-3OZ5J2G74S.959402` |  |
| Gibbs energy; _printed: G_ | -343491 J/mol | 950 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 15; `ORC-FH57UFGBIB.9e666e` |  |
| Gibbs energy; _printed: G_ | -963840 J/mol | 950 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 14; `ORC-FGUYGU7ZQR.3a1b05` |  |
| Gibbs energy; _printed: G_ | -1337820 J/mol | 950 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 15; `ORC-FNZ4DJJABX.279a43` |  |
| Gibbs energy; _printed: G_ | -965073 J/mol | 955 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 15; `ORC-FGA677SMEP.fbbb79` |  |
| Gibbs energy; _printed: G_ | -349466 J/mol | 1000 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 16; `ORC-OIOYMX4EEZ.8b8112` |  |
| Gibbs energy; _printed: G_ | -976355 J/mol | 1000 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 16; `ORC-DVA27VY7ZS.5e19c5` |  |
| Gibbs energy; _printed: G_ | -1356990 J/mol | 1000 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 16; `ORC-4SNGVZBIJR.025178` |  |
| Gibbs energy; _printed: G_ | -355581 J/mol | 1050 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 17; `ORC-WS47STUJAL.7154cb` |  |
| Gibbs energy; _printed: G_ | -989247 J/mol | 1050 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 17; `ORC-J5QFYPYIUP.cfb391` |  |
| Gibbs energy; _printed: G_ | -1376690 J/mol | 1050 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 17; `ORC-GLP3WJJQL6.e97c01` |  |
| Gibbs energy; _printed: G_ | -361831 J/mol | 1100 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 18; `ORC-CE3R77GAIT.3dae30` |  |
| Gibbs energy; _printed: G_ | -1002490 J/mol | 1100 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 18; `ORC-TOQCHKTD7O.b0eddb` |  |
| Gibbs energy; _printed: G_ | -1396870 J/mol | 1100 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 18; `ORC-HJKM4D66BC.3b0567` |  |
| Gibbs energy; _printed: G_ | -368211 J/mol | 1150 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 19; `ORC-K5MDMRMU4J.d23176` |  |
| Gibbs energy; _printed: G_ | -1016050 J/mol | 1150 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 19; `ORC-CRVVQKGW6A.70ecf6` |  |
| Gibbs energy; _printed: G_ | -1417520 J/mol | 1150 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 19; `ORC-46XTUJVEVH.0ad4c4` |  |
| Gibbs energy; _printed: G_ | -374717 J/mol | 1200 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 20; `ORC-SZR7KWB2GC.ecc203` |  |
| Gibbs energy; _printed: G_ | -1029930 J/mol | 1200 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 20; `ORC-VOSWRFAYPZ.731d64` |  |
| Gibbs energy; _printed: G_ | -1438620 J/mol | 1200 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 20; `ORC-XUQJHX6LBW.fc9a42` |  |
| Gibbs energy; _printed: G_ | -381344 J/mol | 1250 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 21; `ORC-PV5GHVTZZ7.6c9f3b` |  |
| Gibbs energy; _printed: G_ | -1044090 J/mol | 1250 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 21; `ORC-6SFAYU2VIO.d4ad95` |  |
| Gibbs energy; _printed: G_ | -1460140 J/mol | 1250 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 21; `ORC-NECXTTXU4O.c0e798` |  |
| Gibbs energy; _printed: G_ | -388089 J/mol | 1300 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 22; `ORC-CW3XXW4EG6.962888` |  |
| Gibbs energy; _printed: G_ | -1058540 J/mol | 1300 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 22; `ORC-PW5HEQL2XT.9e0e79` |  |
| Gibbs energy; _printed: G_ | -1482070 J/mol | 1300 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 22; `ORC-FZ5GZXGJ2Z.168b47` |  |
| Gibbs energy; _printed: G_ | -394949 J/mol | 1350 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 23; `ORC-ZDHXAEIG3G.9e8204` |  |
| Gibbs energy; _printed: G_ | -1073250 J/mol | 1350 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 23; `ORC-F5PDSDC43S.84e63e` |  |
| Gibbs energy; _printed: G_ | -1504390 J/mol | 1350 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 23; `ORC-IKVT4DWICY.efe2ae` |  |
| Gibbs energy; _printed: G_ | -401919 J/mol | 1400 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 24; `ORC-27V2GEERS2.2e5b34` |  |
| Gibbs energy; _printed: G_ | -1088220 J/mol | 1400 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 24; `ORC-L4HOWXXXPY.b3910c` |  |
| Gibbs energy; _printed: G_ | -1527090 J/mol | 1400 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 24; `ORC-64PAQO243D.fc4ba1` |  |
| Gibbs energy; _printed: G_ | -408998 J/mol | 1450 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 25; `ORC-AV7QQPOOPQ.891dd9` |  |
| Gibbs energy; _printed: G_ | -1103430 J/mol | 1450 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 25; `ORC-WHJM7EAVNH.f19fee` |  |
| Gibbs energy; _printed: G_ | -1550150 J/mol | 1450 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 25; `ORC-XB2AWHAQXQ.a6bcf6` |  |
| Gibbs energy; _printed: G_ | -416182 J/mol | 1500 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 26; `ORC-XFODV5AJLJ.af2abe` |  |
| Gibbs energy; _printed: G_ | -1118880 J/mol | 1500 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 26; `ORC-VXXK6LJJZV.e6c6b0` |  |
| Gibbs energy; _printed: G_ | -1573570 J/mol | 1500 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 26; `ORC-2ZQOVYHIZN.d5fe8d` |  |
| Gibbs energy; _printed: G_ | -423469 J/mol | 1550 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 27; `ORC-C5QNWC3N5K.c0f553` |  |
| Gibbs energy; _printed: G_ | -1134570 J/mol | 1550 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 27; `ORC-6IMBDWNHC7.58007c` |  |
| Gibbs energy; _printed: G_ | -1597320 J/mol | 1550 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 27; `ORC-AM65INQKVT.de9685` |  |
| Gibbs energy; _printed: G_ | -430856 J/mol | 1600 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 28; `ORC-WUQJCBTJS2.41e659` |  |
| Gibbs energy; _printed: G_ | -1150470 J/mol | 1600 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 28; `ORC-OSHFV4KQTC.71cfad` |  |
| Gibbs energy; _printed: G_ | -1621410 J/mol | 1600 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 28; `ORC-QCFGY6WBNJ.2c1e17` |  |
| Gibbs energy; _printed: G_ | -438342 J/mol | 1650 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 29; `ORC-JA4PPWLAB3.92a41c` |  |
| Gibbs energy; _printed: G_ | -1166580 J/mol | 1650 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 29; `ORC-N6AFKNI5UU.bd47b0` |  |
| Gibbs energy; _printed: G_ | -1645820 J/mol | 1650 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 29; `ORC-LBXNTOMJFT.f4d5e3` |  |
| Gibbs energy; _printed: G_ | -445923 J/mol | 1700 | Fe0.947O; _alloy: O 0.513611_ | model | [1] Sundman 1991 | Table 2, p. 8, row 30; `ORC-JSFGDRKK2Z.c842af` |  |
| Gibbs energy; _printed: G_ | -1182910 J/mol | 1700 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 30; `ORC-67USMY7AYL.6bfb83` |  |
| Gibbs energy; _printed: G_ | -1670540 J/mol | 1700 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 30; `ORC-AXFJ64KD2C.0b41e3` |  |
| Gibbs energy; _printed: G_ | -1199430 J/mol | 1750 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 31; `ORC-VJ6LCS6IXI.a4d051` |  |
| Gibbs energy; _printed: G_ | -1695570 J/mol | 1750 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 31; `ORC-WDFTYZILZ6.32435f` |  |
| Gibbs energy; _printed: G_ | -1216150 J/mol | 1800 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 32; `ORC-BLVT7QUBEQ.a41196` |  |
| Gibbs energy; _printed: G_ | -1720890 J/mol | 1800 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 32; `ORC-76UXK2A4VN.0ec2c6` |  |
| Gibbs energy; _printed: G_ | -1233060 J/mol | 1850 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 33; `ORC-HYI32PTQYW.97d413` |  |
| Gibbs energy; _printed: G_ | -1746500 J/mol | 1850 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 33; `ORC-BSGJPO5DYV.66f2ae` |  |
| Gibbs energy; _printed: G_ | -1250160 J/mol | 1900 | Fe2O3; _alloy: O 0.6_ | model | [1] Sundman 1991 | Table 4, p. 11, row 34; `ORC-Q44ZAZSBUX.30c740` |  |
| Gibbs energy; _printed: G_ | -1772400 J/mol | 1900 | Magnetite (Fe3O4); _alloy: O 0.571429_ | model | [1] Sundman 1991 | Table 3, p. 9, row 34; `ORC-CSKRGNO5G6.2a927b` |  |

## Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

1. B Sundman, An assessment of the Fe-O system, JPE 12, 127-140 (1991). [doi:10.1007/bf02645709](https://doi.org/10.1007/bf02645709)

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735569
- R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735859
- R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735891
- R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065

Also cite the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0).

Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

```bibtex
@misc{orchid_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).