# Co–Ho system

> Co–Ho system: 35 accepted literature values (invariant reaction 21, phase transition 11, activity / EMF / Gibbs energy 2, formation 1) and 1 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

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

35 accepted literature values from 1 paper(s) (experimental 17, model 18); 1 calculated phase diagram(s).

Data: [JSON](https://data.orchid-project.org/literature/systems/CO-HO.json) · [CSV](https://data.orchid-project.org/systems/CO-HO.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CO-HO) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#CO-HO/CoHo-09Jin.json) · [phases (12)](https://data.orchid-project.org/phases/pages/CO-HO.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CO-HO.html) · [Markdown](https://data.orchid-project.org/systems/CO-HO.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 17 |
| model | 18 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 21 |
| phase transition | 11 |
| formation | 1 |
| activity / EMF / Gibbs energy | 2 |

## 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 |
|---|---|---|---|
| CoHo-09Jin.tdb | S. Jin, J. Wang, L.G. Zhang, H.S. Liu, L.B. Liu, F. Zheng, Z.P. Jin, J. Alloys Compd., 477, 233-38(2009). [doi:10.1016/j.jallcom.2008.10.062](https://doi.org/10.1016/j.jallcom.2008.10.062) | `2530e3403cc340aadbf277f417c2618a37c3cb85d5af012ef13cfea1d0f18424` | [viewer](https://orchid-project.org/phase-diagrams/#CO-HO/CoHo-09Jin.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CoHo-09Jin.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CoHo-09Jin.json) |

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

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| CoHo-09Jin.tdb | 1638.4 | LIQUID (x(Ho) 0.20011) + CO7HO2 (x(Ho) 0.22222) + CO3HO (x(Ho) 0.25) |
| CoHo-09Jin.tdb | 1638.4 | LIQUID (x(Ho) 0.20011) + CO7HO2 (x(Ho) 0.22222) + CO3HO (x(Ho) 0.25) |
| CoHo-09Jin.tdb | 1638.4 | LIQUID (x(Ho) 0.20021) + CO7HO2 (x(Ho) 0.22222) + CO3HO (x(Ho) 0.25) |
| CoHo-09Jin.tdb | 1623.67 | FCC_A1 (x(Ho) 0) + LIQUID (x(Ho) 0.06173) + CO17HO2 (x(Ho) 0.10526) |
| CoHo-09Jin.tdb | 1623.59 | CO17HO2 (x(Ho) 0.10526) + CO5HO_D2D (x(Ho) 0.15385) + LIQUID (x(Ho) 0.15486) |
| CoHo-09Jin.tdb | 1623.59 | CO17HO2 (x(Ho) 0.10526) + CO5HO_D2D (x(Ho) 0.15385) + LIQUID (x(Ho) 0.15476) |
| CoHo-09Jin.tdb | 1623.59 | CO17HO2 (x(Ho) 0.10526) + CO5HO_D2D (x(Ho) 0.15385) + LIQUID (x(Ho) 0.15437) |
| CoHo-09Jin.tdb | 1623.59 | CO17HO2 (x(Ho) 0.10526) + CO5HO_D2D (x(Ho) 0.15385) + LIQUID (x(Ho) 0.15437) |
| CoHo-09Jin.tdb | 1619.63 | CO5HO_D2D (x(Ho) 0.15385) + LIQUID (x(Ho) 0.17375) + CO7HO2 (x(Ho) 0.22222) |
| CoHo-09Jin.tdb | 1619.63 | CO5HO_D2D (x(Ho) 0.15385) + LIQUID (x(Ho) 0.17374) + CO7HO2 (x(Ho) 0.22222) |
| CoHo-09Jin.tdb | 1619.62 | CO5HO_D2D (x(Ho) 0.15385) + LIQUID (x(Ho) 0.17318) + CO7HO2 (x(Ho) 0.22222) |
| CoHo-09Jin.tdb | 1619.62 | CO5HO_D2D (x(Ho) 0.15385) + LIQUID (x(Ho) 0.17338) + CO7HO2 (x(Ho) 0.22222) |
| CoHo-09Jin.tdb | 1604.05 | CO3HO (x(Ho) 0.25) + CO2HO_C15 (x(Ho) 0.33333) + LIQUID (x(Ho) 0.33357) |
| CoHo-09Jin.tdb | 1604.05 | CO3HO (x(Ho) 0.25) + LIQUID (x(Ho) 0.33329) + CO2HO_C15 (x(Ho) 0.33333) |
| CoHo-09Jin.tdb | 1427.13 | CO17HO2 (x(Ho) 0.10526) + CO5HO_D2D (x(Ho) 0.15385) + CO7HO2 (x(Ho) 0.22222) |
| CoHo-09Jin.tdb | 1170.63 | LIQUID (x(Ho) 0.74765) + COHO3_D011 (x(Ho) 0.75) + HCP_A3 (x(Ho) 1) |
| CoHo-09Jin.tdb | 1170.63 | LIQUID (x(Ho) 0.7476) + COHO3_D011 (x(Ho) 0.75) + HCP_A3 (x(Ho) 1) |
| CoHo-09Jin.tdb | 1170.63 | LIQUID (x(Ho) 0.74761) + COHO3_D011 (x(Ho) 0.75) + HCP_A3 (x(Ho) 1) |
| CoHo-09Jin.tdb | 1170.63 | LIQUID (x(Ho) 0.74768) + COHO3_D011 (x(Ho) 0.75) + HCP_A3 (x(Ho) 1) |
| CoHo-09Jin.tdb | 1170.63 | LIQUID (x(Ho) 0.74771) + COHO3_D011 (x(Ho) 0.75) + HCP_A3 (x(Ho) 1) |
| CoHo-09Jin.tdb | 1062.27 | LIQUID (x(Ho) 0.63117) + CO7HO12 (x(Ho) 0.63158) + COHO3_D011 (x(Ho) 0.75) |
| CoHo-09Jin.tdb | 1062.27 | LIQUID (x(Ho) 0.63114) + CO7HO12 (x(Ho) 0.63158) + COHO3_D011 (x(Ho) 0.75) |
| CoHo-09Jin.tdb | 1062.27 | LIQUID (x(Ho) 0.63136) + CO7HO12 (x(Ho) 0.63158) + COHO3_D011 (x(Ho) 0.75) |
| CoHo-09Jin.tdb | 1059.98 | CO2HO_C15 (x(Ho) 0.33333) + LIQUID (x(Ho) 0.61407) + CO7HO12 (x(Ho) 0.63158) |
| CoHo-09Jin.tdb | 1059.98 | CO2HO_C15 (x(Ho) 0.33333) + LIQUID (x(Ho) 0.61414) + CO7HO12 (x(Ho) 0.63158) |
| CoHo-09Jin.tdb | 1059.98 | CO2HO_C15 (x(Ho) 0.33333) + LIQUID (x(Ho) 0.61388) + CO7HO12 (x(Ho) 0.63158) |
| CoHo-09Jin.tdb | 1032.1 | CO2HO_C15 (x(Ho) 0.33333) + CO3HO4 (x(Ho) 0.57143) + CO7HO12 (x(Ho) 0.63158) |
| CoHo-09Jin.tdb | 694.99 | FCC_A1 (x(Ho) 0) + HCP_A3 (x(Ho) 0) + CO17HO2 (x(Ho) 0.10526) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/CO/CO-HO.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/CO/CO-HO.json)

## Invariant reactions (literature)

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

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1703 | peritectic: L + BCC_A1 -> HCP_A3 | L: Ho 0.98 | model | [1] Jin 2009 | Table 3, p. 4, row 1; `ORC-ZQPZMURSHD` |  |
| 1638 | peritectic: L + Co3Ho -> Co2Ho7 | Co3Ho: Ho 0.25; Co2Ho7: Ho 0.777778 | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 16; `ORC-B4AV6XKCD2` |  |
| 1637 | peritectic: L + Co3Ho -> Co2Ho7 | L: Ho 0.2008; Co3Ho: Ho 0.25; Co2Ho7: Ho 0.777778 | model | [1] Jin 2009 | Table 3, p. 4, row 17; `ORC-ODLJOGURDZ` |  |
| 1628 | peritectic: L + Co17Ho2 -> Co5.5Ho | Co17Ho2: Ho 0.105263; Co5.5Ho: Ho 0.153846 | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 20; `ORC-BHGZKI7BHX` |  |
| 1623 | peritectic: L + Co17Ho2 -> Co5.5Ho | L: Ho 0.1548; Co17Ho2: Ho 0.105263; Co5.5Ho: Ho 0.153846 | model | [1] Jin 2009 | Table 3, p. 4, row 21; `ORC-3A2YYD5ZAB` |  |
| 1623 | eutectic: L -> Co17Ho2 + FCC_A1 | L: Ho 0.062; Co17Ho2: Ho 0.105263 | model | [1] Jin 2009 | Table 3, p. 4, row 27; `ORC-EUDTUOJCSE` |  |
| 1618 | eutectic: L -> Co7Ho2 + Co5.5Ho | L: Ho 0.1738; Co7Ho2: Ho 0.222222; Co5.5Ho: Ho 0.153846 | model | [1] Jin 2009 | Table 3, p. 4, row 19; `ORC-XSIONMKHTH` |  |
| 1618 | eutectic: L -> Co17Ho2 + FCC_A1 | L: Ho 0.07; Co17Ho2: Ho 0.105263 | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 26; `ORC-Y2SV2RN47C` |  |
| 1613 | eutectic: L -> Co7Ho2 + Co5.5Ho | L: Ho 0.19; Co7Ho2: Ho 0.222222; Co5.5Ho: Ho 0.153846 | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 18; `ORC-GVCUULNARI` |  |
| 1603 | peritectic: L + Co3Ho -> Co2Ho | Co3Ho: Ho 0.25; Co2Ho: Ho 0.333333 | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 12; `ORC-GPPSVROPKC` |  |
| 1601 | peritectic: L + Co3Ho -> Co2Ho | L: Ho 0.3343; Co3Ho: Ho 0.25; Co2Ho: Ho 0.333333 | model | [1] Jin 2009 | Table 3, p. 4, row 13; `ORC-AEUIPRRJIZ` |  |
| 1423 | eutectoid: Co5.5Ho -> Co7Ho2 + Co17Ho2 | Co5.5Ho: Ho 0.153846; Co7Ho2: Ho 0.222222; Co17Ho2: Ho 0.105263 | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 22; `ORC-DC3QHXZNHL` |  |
| 1423 | eutectoid: Co5.5Ho -> Co7Ho2 + Co17Ho2 | Co5.5Ho: Ho 0.153846; Co7Ho2: Ho 0.222222; Co17Ho2: Ho 0.105263 | model | [1] Jin 2009 | Table 3, p. 4, row 23; `ORC-ZNJ5DZTHIX` |  |
| 1168 | peritectic: L + HCP_A3 -> CoHo3 | CoHo3: Ho 0.75 | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 2; `ORC-W26ETKROFZ` |  |
| 1162 | peritectic: L + HCP_A3 -> CoHo3 | L: Ho 0.7487; CoHo3: Ho 0.75 | model | [1] Jin 2009 | Table 3, p. 4, row 3; `ORC-QHMGUW72HQ` |  |
| 1055 | eutectic: L -> CoHo3 + Co7Ho12 | L: Ho 0.6322; CoHo3: Ho 0.75; Co7Ho12: Ho 0.631579 | model | [1] Jin 2009 | Table 3, p. 4, row 5; `ORC-3ZPQRPLLC2` |  |
| 1053 | eutectic: L -> Co7Ho12 + Co2Ho | L: Ho 0.615; Co7Ho12: Ho 0.631579; Co2Ho: Ho 0.333333 | model | [1] Jin 2009 | Table 3, p. 4, row 9; `ORC-WPYRIG5OHT` |  |
| 1048 | eutectic: L -> Co7Ho12 + Co2Ho | L: Ho 0.6; Co7Ho12: Ho 0.631579; Co2Ho: Ho 0.333333 | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 8; `ORC-7EHQOZJ3YX` |  |
| 1043 | eutectic: L -> CoHo3 + Co7Ho12 | L: Ho 0.67; CoHo3: Ho 0.75; Co7Ho12: Ho 0.631579 | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 4; `ORC-M7Z64V35G3` |  |
| 1028 | peritectoid: Co7Ho12 + Co2Ho -> Co3Ho4 | Co7Ho12: Ho 0.631579; Co2Ho: Ho 0.333333; Co3Ho4: Ho 0.571429 | model | [1] Jin 2009 | Table 3, p. 4, row 11; `ORC-IXCP7KGAL5` |  |
| 1028 | peritectoid: Co7Ho12 + Co2Ho -> Co3Ho4 | Co7Ho12: Ho 0.631579; Co2Ho: Ho 0.333333; Co3Ho4: Ho 0.571429 | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 10; `ORC-YAWZGWUV4U` |  |

## 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–Ho system (1)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| CoHo3 |  | -10.539 kJ/mol (basis unstated) | 298.15 | model |  |  | [1] Jin 2009 | p. 5; `ORC-HBU33Z2HPE` | “Considering the similar chemical property between Ho and these RE, it can be concluded that the enthalpies of formation of CoHo3 at 298 K should be around -10,000 J mol-1 , which is compatible with the presently assessed value, -10,539 J mol-1 .” |

## Other properties

### Phase transition (11)

Table: Phase transition, Co–Ho system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 1043 K | 1043 | L ↔ CoHo3 + Co7 Ho12 | experimental | [1] Jin 2009 | p. 3; `ORC-Y47C5LMJFI.c47f8f` | “Note here the temperatures of two reactions, L ↔ CoHo3 + Co7 Ho12 at 1055 K and L ↔ Co7 Ho12 at 1056 K, deviate about 12 K from the corresponding measured values, 1043 K and 1068 K respectively.” |
| Phase transition | 1055 K | 1055 | L ↔ CoHo3 + Co7 Ho12 | model | [1] Jin 2009 | p. 3; `ORC-Y47C5LMJFI.2d58ba` | “Note here the temperatures of two reactions, L ↔ CoHo3 + Co7 Ho12 at 1055 K and L ↔ Co7 Ho12 at 1056 K, deviate about 12 K from the corresponding measured values, 1043 K and 1068 K respectively.” |
| Phase transition | 1056 K | 1056 | L ↔ Co7 Ho12 | model | [1] Jin 2009 | p. 3; `ORC-Y47C5LMJFI.108673` | “Note here the temperatures of two reactions, L ↔ CoHo3 + Co7 Ho12 at 1055 K and L ↔ Co7 Ho12 at 1056 K, deviate about 12 K from the corresponding measured values, 1043 K and 1068 K respectively.” |
| Phase transition | 1056 K | 1056 | congruent melting: L -> Co7Ho12; _L: Ho 0.6316; Co7Ho12: Ho 0.631579_ | model | [1] Jin 2009 | Table 3, p. 4, row 7; `ORC-5JPD4F7PN5` |  |
| Phase transition | 1068 K | 1068 | L ↔ Co7 Ho12 | experimental | [1] Jin 2009 | p. 3; `ORC-Y47C5LMJFI.2a6378` | “Note here the temperatures of two reactions, L ↔ CoHo3 + Co7 Ho12 at 1055 K and L ↔ Co7 Ho12 at 1056 K, deviate about 12 K from the corresponding measured values, 1043 K and 1068 K respectively.” |
| Phase transition | 1068 K | 1068 | congruent melting: L -> Co7Ho12; _L: Ho 0.631579; Co7Ho12: Ho 0.631579_ | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 6; `ORC-DJM3WTQZDX` |  |
| Phase transition | 1423.15 K | 1423.15 | other: Co5.5 Ho -> Co7 Ho2 + Co17 Ho2 | experimental | [1] Jin 2009 | p. 1; `ORC-3FCTMQKDVB` | “Co5.5 Ho is unstable at low temperature and decomposes into Co7 Ho2 and Co17 Ho2 at about 1150 ◦ C.” |
| Phase transition | 1643 K | 1643 | congruent melting: L -> Co17Ho2; _L: Ho 0.105263; Co17Ho2: Ho 0.105263_ | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 24; `ORC-LVLVCAJVUT` |  |
| Phase transition | 1648 K | 1648 | congruent melting: L -> Co17Ho2; _L: Ho 0.1053; Co17Ho2: Ho 0.105263_ | model | [1] Jin 2009 | Table 3, p. 4, row 25; `ORC-CUTKFYWHHK` |  |
| Phase transition | 1661 K | 1661 | congruent melting: L -> Co3Ho; _L: Ho 0.25; Co3Ho: Ho 0.25_ | model | [1] Jin 2009 | Table 3, p. 4, row 15; `ORC-WZ6PGS2LXN` |  |
| Phase transition | 1663 K | 1663 | congruent melting: L -> Co3Ho; _L: Ho 0.25; Co3Ho: Ho 0.25_ | experimental | [1] Jin 2009; _cites Buschow 1969_ [doi](https://doi.org/10.1016/0022-5088%2869%2990090-3) | Table 3, p. 4, row 14; `ORC-JNSFUSGFBW` |  |

### Activity / EMF / Gibbs energy (2)

Table: Activity / EMF / Gibbs energy, Co–Ho system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Gibbs energy; _printed: Gibbs energy of formation_ | -11953 J mol-1 | 1081 |  | model | [1] Jin 2009 | p. 4; `ORC-KLHPSGS4XZ.0182dd` | “However, Gibbs energy of formation of CoHo3 at 1081 K obtained through EMF measurements is -31,275 J mol-1 , while the assessed value is -11,953 J mol-1 , the difference is noticeable.” |
| Gibbs energy; _printed: Gibbs energy of formation_ | -31275 J mol-1 | 1081 |  | experimental | [1] Jin 2009; _cites Su 2003_ | p. 4; `ORC-KLHPSGS4XZ.83a170` | “However, Gibbs energy of formation of CoHo3 at 1081 K obtained through EMF measurements is -31,275 J mol-1 , while the assessed value is -11,953 J mol-1 , the difference is noticeable.” |

## Sources

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

1. S. Jin, J. Wang, L.G. Zhang, H.S. Liu, L.B. Liu, F. Zheng et al., Thermodynamic assessment of the Co–Ho binary system, Journal of Alloys and Compounds 477, 233-238 (2009). [doi:10.1016/j.jallcom.2008.10.062](https://doi.org/10.1016/j.jallcom.2008.10.062)

## 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/).
