# Co–Ga system

> Co–Ga system: 44 accepted literature values (invariant reaction 21, formation 14, crystal structure 9) and 3 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/CO-GA.html · Markdown: https://data.orchid-project.org/systems/CO-GA.md

44 accepted literature values from 3 paper(s) (experimental 22, model 12, DFT 10); 3 calculated phase diagram(s). 11 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/CO-GA.json) · [CSV](https://data.orchid-project.org/systems/CO-GA.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CO-GA) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#CO-GA/CoGa-05Su.json) · [phases (7)](https://data.orchid-project.org/phases/pages/CO-GA.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CO-GA.html) · [Markdown](https://data.orchid-project.org/systems/CO-GA.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 22 |
| model | 12 |
| DFT | 10 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 21 |
| formation | 14 |
| crystal structure | 9 |

## 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 |
|---|---|---|---|
| CoGa-05Su.tdb | X. Su, J.-C. Tedenac, Intermetallics, 13, 467-73(2005). [doi:10.1016/j.intermet.2004.08.003](https://doi.org/10.1016/j.intermet.2004.08.003) | `d465d6a3ab86a311c1e29ed1293abad3aa84aaa7b773769bd930a288797c0fd7` | [viewer](https://orchid-project.org/phase-diagrams/#CO-GA/CoGa-05Su.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoGa-05Su.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoGa-05Su.json) |
| CoGa-10Cha.tdb | A. Chari, A. Garay, R. Arroyave, Calphad, 34, 189-95(2010). [doi:10.1016/j.calphad.2010.02.004](https://doi.org/10.1016/j.calphad.2010.02.004) | `d36d75154ff187ec987f3f033ec9963eff169dd02215bce8311737df0203f8fd` | [viewer](https://orchid-project.org/phase-diagrams/#CO-GA/CoGa-10Cha.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoGa-10Cha.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoGa-10Cha.json) |
| CoGa-99Gro.tdb | J. Groebner, R. Wenzel, G.G. Fischer, R. Schmid-Fetzer, J. Phase Equilib., 20, 615-25(1999). [doi:10.1361/105497199770340608](https://doi.org/10.1361/105497199770340608) | `119f21425d794516e905b9a5bb5776acbb666cf212e82904caa365f6b4852379` | [viewer](https://orchid-project.org/phase-diagrams/#CO-GA/CoGa-99Gro.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoGa-99Gro.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoGa-99Gro.json) |

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

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| CoGa-05Su.tdb | 1483.15 | FCC_A1 (x(Ga) 0.18971) + COGA_B2 (x(Ga) 0.27047) + LIQUID (x(Ga) 0.31358) |
| CoGa-05Su.tdb | 1127.69 | COGA_B2 (x(Ga) 0.6104) + COGA3 (x(Ga) 0.75) + LIQUID (x(Ga) 0.83572) |
| CoGa-05Su.tdb | 1127.69 | COGA_B2 (x(Ga) 0.61045) + COGA3 (x(Ga) 0.75) + LIQUID (x(Ga) 0.83588) |
| CoGa-05Su.tdb | 302.91 | COGA3 (x(Ga) 0.75) + ORTHORHOMBIC_A11 (x(Ga) 1) + LIQUID (x(Ga) 1) |
| CoGa-10Cha.tdb | 1119.92 | COGA_B2 (x(Ga) 0.61858) + COGA3 (x(Ga) 0.75) + LIQUID (x(Ga) 0.83973) |
| CoGa-99Gro.tdb | 1481.96 | FCC_A1 (x(Ga) 0.14655) + LIQUID (x(Ga) 0.36925) + COGA_B2 (x(Ga) 0.37178) |
| CoGa-99Gro.tdb | 1132.33 | COGA_B2 (x(Ga) 0.61359) + COGA3 (x(Ga) 0.75) + LIQUID (x(Ga) 0.79882) |
| CoGa-99Gro.tdb | 489.74 | HCP_A3 (x(Ga) 0.10463) + FCC_A1 (x(Ga) 0.11141) + COGA_B2 (x(Ga) 0.43738) |
| CoGa-99Gro.tdb | 302.91 | COGA3 (x(Ga) 0.75) + ORTHORHOMBIC_A11 (x(Ga) 1) + LIQUID (x(Ga) 1) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/CO/CO-GA.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/CO/CO-GA.json) · [CALPHAD hull CoGa-05Su](https://data.orchid-project.org/hulls/calphad-sgte/CO/CO-GA--CoGa-05Su.json) · [CALPHAD hull CoGa-99Gro](https://data.orchid-project.org/hulls/calphad-sgte/CO/CO-GA--CoGa-99Gro.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Co–Ga system (21)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1483 | Liq. + fcc ↔ β | Liq.: Ga 0.265; fcc: Ga 0.19; β: Ga 0.265 | experimental | [1] Chari 2010; _cites Feschotte 1979_ | Table 4, p. 6, row 3; `ORC-57OLQ3UZSY` |  |
| 1483 | Liq. + fcc ↔ β | Liq.: Ga 0.3136; fcc: Ga 0.1897; β: Ga 0.2705 | model | [1] Chari 2010; _cites Su 2005_ | Table 4, p. 6, row 2; `ORC-7XX2OR45OP` |  |
| 1483 | Liq. + (αCo) -> β | Liq.: Ga 0.265; (αCo): Ga 0.19; β: Ga 0.265 | experimental | [2] Su 2005; _cites ref. 79Fes_ | Table 2, p. 4, row 2; `ORC-EL3AF7O6D5` |  |
| 1483 | Liq. + (αCo) -> β | Liq.: Ga 0.3136; (αCo): Ga 0.1897; β: Ga 0.2705 | model | [2] Su 2005 | Table 2, p. 4, row 1; `ORC-LOHOCUGRUX` |  |
| 1482 | Liq. + fcc ↔ β | Liq.: Ga 0.3185; fcc: Ga 0.1966; β: Ga 0.2952 | model | [1] Chari 2010 | Table 4, p. 6, row 1; `ORC-VPOTG3CYZX` |  |
| 1480 | Liq. + fcc ↔ β | Liq.: Ga 0.3; fcc: Ga 0.13; β: Ga 0.275 | experimental | [1] Chari 2010; _cites Esslinger 1957_ | Table 4, p. 6, row 4; `ORC-D6WNBGBJOB` |  |
| 1480 | Liq. + (αCo) -> β | Liq.: Ga 0.3; (αCo): Ga 0.13; β: Ga 0.275 | experimental | [2] Su 2005; _cites ref. 57Ess_ | Table 2, p. 4, row 3; `ORC-JADTAFFN24` |  |
| 1450 | Liq. + (αCo) -> β | Liq.: Ga 0.51; (αCo): Ga 0.33; β: Ga 0.36 | experimental | [2] Su 2005; _cites ref. 80Lu_ | Table 2, p. 4, row 4; `ORC-6WHPPZVLIQ` |  |
| 1450 | Liq. + fcc ↔ β | Liq.: Ga 0.51; fcc: Ga 0.33; β: Ga 0.36 | experimental | [1] Chari 2010; _cites Lu 1980_ | Table 4, p. 6, row 5; `ORC-VZGOVUAXK3` |  |
| 1128 | Liq. + β -> CoGa3 | Liq.: Ga 0.8; β: Ga 0.645; CoGa3: Co 0.25, Ga 0.75 | experimental | [2] Su 2005; _cites ref. 79Fes_ | Table 2, p. 4, row 6; `ORC-73HCJRFXGB` |  |
| 1128 | Liq. + β ↔ fcc | Liq.: Ga 0.8; β: Ga 0.645 | experimental | [1] Chari 2010; _cites Feschotte 1979_ | Table 4, p. 6, row 8; `ORC-D3EBOT52SM` |  |
| 1128 | Liq. + β ↔ fcc | Liq.: Ga 0.8355; β: Ga 0.6103 | model | [1] Chari 2010; _cites Su 2005_ | Table 4, p. 6, row 7; `ORC-KXEXPONCTO` |  |
| 1128 | Liq. + β -> CoGa3 | Liq.: Ga 0.8355; β: Ga 0.6103; CoGa3: Co 0.25, Ga 0.75 | model | [2] Su 2005 | Table 2, p. 4, row 5; `ORC-P75GM6I2KE` |  |
| 1120 | peritectic: Liq + β → CoGa3 |  | model | [1] Chari 2010 | p. 3; `ORC-4RDZBZB35P` | “In this study, CoGa3 is taken as a stoichiometric compound with the crystal structure tP16 which decomposes in the peritectic reaction Liq + β → CoGa3 . The temperature at which this reaction takes place is taken as 1120 K.” |
| 1120 | Liq. + β ↔ fcc | Liq.: Ga 0.8397; β: Ga 0.6186 | model | [1] Chari 2010 | Table 4, p. 6, row 6; `ORC-6NJD4N45R6` |  |
| 1111 | Liq. + β ↔ fcc | Liq.: Ga 0.8; β: Ga 0.65 | experimental | [1] Chari 2010; _cites Esslinger 1957_ | Table 4, p. 6, row 9; `ORC-UCZO7ZVBCL` |  |
| 1111 | Liq. + β -> CoGa3 | Liq.: Ga 0.8; β: Ga 0.65; CoGa3: Co 0.25, Ga 0.75 | experimental | [2] Su 2005; _cites ref. 57Ess_ | Table 2, p. 4, row 7; `ORC-XN2Y5VE4PE` |  |
| 1106 | Liq. + β ↔ fcc | Liq.: Ga 0.85; β: Ga 0.63 | experimental | [1] Chari 2010; _cites Lu 1980_ | Table 4, p. 6, row 10; `ORC-DS3W366XFQ` |  |
| 1106 | Liq. + β -> CoGa3 | Liq.: Ga 0.85; β: Ga 0.63; CoGa3: Co 0.25, Ga 0.75 | experimental | [2] Su 2005; _cites ref. 82Lu_ | Table 2, p. 4, row 8; `ORC-H67MZGDJH3` |  |
| 303.5 | Liq. + CoGa3 → Orthorhombic Ga | Liq.: Ga 1; CoGa3: Ga 0.75; Orthorhombic Ga: Ga 1 | experimental | [1] Chari 2010; _cites Feschotte 1979_ | Table 4, p. 6, row 12; `ORC-DGCPQPH5BW` |  |
| 302.9 | Liq. + CoGa3 → Orthorhombic Ga | Liq.: Ga 1; CoGa3: Ga 0.75; Orthorhombic Ga: Ga 1 | model | [1] Chari 2010 | Table 4, p. 6, row 11; `ORC-WRE64NDREO` |  |

## 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, Co–Ga system (14)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| CoGa | [CoGa](https://data.orchid-project.org/compounds/CoGa.html) | -41 kJ/mol-atom | 298.15 | experimental | -27.209 (mp-aaaaabrd) | -27.73 (oqmd-88346) | [3] Gröbner 1999; _cites Predel 1975_ [doi](https://doi.org/10.1016/0040-6031%2875%2985065-9) | Table 1, p. 2, row 20; `ORC-2AHUOI7AKC` |  |
| CoGa | [CoGa](https://data.orchid-project.org/compounds/CoGa.html) | -38 kJ/mol-atom | 1173 | experimental | -27.209 (mp-aaaaabrd) | -27.73 (oqmd-88346) | [3] Gröbner 1999; _cites Mikula 1987_ | Table 1, p. 2, row 24; `ORC-YJ23MHTUH6` |  |
| CoGa | [CoGa](https://data.orchid-project.org/compounds/CoGa.html) | -36 kJ/mol-atom | 1173 | experimental | -27.209 (mp-aaaaabrd) | -27.73 (oqmd-88346) | [3] Gröbner 1999; _cites Katayama 1975_ [doi](https://doi.org/10.2320/matertrans1960.16.423) | Table 1, p. 2, row 23; `ORC-AUMME4732X` |  |
| CoGa | [CoGa](https://data.orchid-project.org/compounds/CoGa.html) | -35.5 kJ/mol-atom | 298.15 | model | -27.209 (mp-aaaaabrd) | -27.73 (oqmd-88346) | [3] Gröbner 1999 | Table 1, p. 2, row 21; `ORC-C7ADQXQDBL` |  |
| CoGa | [CoGa](https://data.orchid-project.org/compounds/CoGa.html) | -32 kJ/mol-atom | 1100 | experimental | -27.209 (mp-aaaaabrd) | -27.73 (oqmd-88346) | [3] Gröbner 1999; _cites Th 1982_ | Table 1, p. 2, row 22; `ORC-ER6MJZFTIS` |  |
| CoGa3 | [CoGa3](https://data.orchid-project.org/compounds/CoGa3.html) | -45 kJ/mol-atom | 298.15 | experimental | -25.895 (mp-aaaabekt) | -25.771 (oqmd-29254) | [3] Gröbner 1999; _cites Predel 1975_ [doi](https://doi.org/10.1016/0040-6031%2875%2985065-9) | Table 1, p. 2, row 25; `ORC-WAGYNIIZWW` |  |
| CoGa3 |  | -32.4 kJ/mol-atom | 298.15 | DFT |  |  | [1] Chari 2010 | Table 2, p. 4, row 8; `ORC-WE7SUXU7JE` |  |
| CoGa3 | [CoGa3](https://data.orchid-project.org/compounds/CoGa3.html) | -29 kJ/mol-atom | 298.15 | model | -25.895 (mp-aaaabekt) | -25.771 (oqmd-29254) | [3] Gröbner 1999 | Table 1, p. 2, row 26; `ORC-H3FQUU327A` |  |
| CoGa3 | [CoGa3](https://data.orchid-project.org/compounds/CoGa3.html) | -29 kJ/mol-atom | 1100 | experimental | -25.895 (mp-aaaabekt) | -25.771 (oqmd-29254) | [3] Gröbner 1999; _cites Th 1982_ | Table 1, p. 2, row 27; `ORC-OHFIJB3CH6` |  |
| CoGa3 | [CoGa3](https://data.orchid-project.org/compounds/CoGa3.html) | -28.666 kJ/mol-atom | 298.15 | model | -25.895 (mp-aaaabekt) | -25.771 (oqmd-29254) | [1] Chari 2010 | Table 2, p. 4, row 9; `ORC-72ITFH677T` |  |
| CoGa3 |  | -25.9 kJ/mol-atom | 298.15 | DFT |  |  | [1] Chari 2010 | Table 2, p. 4, row 7; `ORC-ZGNWM54HDH` |  |
| β (Ga:Co) |  | -39.4 kJ/mol-atom | 298.15 | DFT |  |  | [1] Chari 2010 | Table 2, p. 4, row 2; `ORC-77VTAHJPPR` |  |
| β (Ga:Co) |  | -37.833 kJ/mol-atom | 298.15 | model |  |  | [1] Chari 2010 | Table 2, p. 4, row 3; `ORC-OWSFSGWWJC` |  |
| β (Ga:Co) |  | -26.9 kJ/mol-atom | 298.15 | DFT |  |  | [1] Chari 2010 | Table 2, p. 4, row 1; `ORC-FED66KUIGQ` |  |

## Other properties

### Crystal structure (9)

Table: Crystal structure, Co–Ga system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a | 6.242 Å |  | CoGa3; _alloy: Ga 0.75_ | experimental | [1] Chari 2010; _cites Meyer 1997_ [doi](https://doi.org/10.1016/s0925-8388%2897%2900223-5) | Table 3, p. 5, row 6; `ORC-2GJADQUUZE` |  |
| Lattice a | 6.26 Å | 0 | CoGa3; _alloy: Ga 0.75_ | DFT | [1] Chari 2010 | Table 3, p. 5, row 5; `ORC-PRVNFRN7RF` |  |
| Lattice a | 6.106 Å | 0 | CoGa3; _alloy: Ga 0.75_ | DFT | [1] Chari 2010 | Table 3, p. 5, row 4; `ORC-RA5JLXNBNW` |  |
| Lattice a | 2.886 Å | 0 | β | DFT | [1] Chari 2010 | Table 3, p. 5, row 2; `ORC-5F2LUYPK5B` |  |
| Lattice a | 2.813 Å | 0 | β | DFT | [1] Chari 2010 | Table 3, p. 5, row 1; `ORC-X2XLDE56OB` |  |
| Lattice a | 2.88 Å |  | β | experimental | [1] Chari 2010; _cites Whittle 1980_ [doi](https://doi.org/10.1088/0305-4608/10/10/008) | Table 3, p. 5, row 3; `ORC-YP74RSNZKL` |  |
| Lattice c | 6.442 Å |  | CoGa3; _alloy: Ga 0.75_ | experimental | [1] Chari 2010; _cites Meyer 1997_ [doi](https://doi.org/10.1016/s0925-8388%2897%2900223-5) | Table 3, p. 5, row 9; `ORC-EF5CX2IQPJ` |  |
| Lattice c | 6.295 Å | 0 | CoGa3; _alloy: Ga 0.75_ | DFT | [1] Chari 2010 | Table 3, p. 5, row 7; `ORC-M4PZ4DOKL2` |  |
| Lattice c | 6.471 Å | 0 | CoGa3; _alloy: Ga 0.75_ | DFT | [1] Chari 2010 | Table 3, p. 5, row 8; `ORC-QRZM4UUIRJ` |  |

## Sources

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

1. Arpita Chari, Andres Garay, Raymundo Arróyave, Thermodynamic remodeling of the Co–Ga system, Calphad 34, 189-195 (2010). [doi:10.1016/j.calphad.2010.02.004](https://doi.org/10.1016/j.calphad.2010.02.004)
2. Xuping Su, Jean-Claude Tedenac, Thermodynamic modeling of the cobalt–gallium system, Intermetallics 13, 467-473 (2005). [doi:10.1016/j.intermet.2004.08.003](https://doi.org/10.1016/j.intermet.2004.08.003)
3. J. Gröbner, R. Wenzel, G. G. Fischer, R. Schmid-Fetzer, Thermodynamic calculation of the binary systems M-Ga and investigation of ternary M-Ga-N phase equilibria (M=Ni, Co, Pd, Cr), JPE 20, 615-625 (1999). [doi:10.1361/105497199770340608](https://doi.org/10.1361/105497199770340608)

## 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/).