# Ce–Ga system

> Ce–Ga system: 71 accepted literature values (invariant reaction 43, formation 20, phase transition 8) and 2 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

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

71 accepted literature values from 2 paper(s) (experimental 21, model 50); 2 calculated phase diagram(s). 16 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/CE-GA.json) · [CSV](https://data.orchid-project.org/systems/CE-GA.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CE-GA) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#CE-GA/CeGa-13Idb.json) · [phases (12)](https://data.orchid-project.org/phases/pages/CE-GA.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CE-GA.html) · [Markdown](https://data.orchid-project.org/systems/CE-GA.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 21 |
| model | 50 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 43 |
| phase transition | 8 |
| formation | 20 |

## 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 |
|---|---|---|---|
| CeGa-13Idb.tdb | M. Idbenali, C. Servant, M. Feddaoui, J. Phase Diag. Diffus., 34, 467-73(2013). [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) | `dbc99ec4eb8fcd0e72aef355968da7bf8572de3f04e8ce5e9a5e752afe76c38f` | [viewer](https://orchid-project.org/phase-diagrams/#CE-GA/CeGa-13Idb.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CeGa-13Idb.json) |
| CeGa-19Liu.tdb | J. Liu, F. Li, J. Liu, X. Zhang, T. Ahmad, T. Liang, Monatsh. Chem., 150, 1225-33(2019). [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) | `30f0cb2703063a0c456563dde7307025b88a42be18076d86deaff958c28498ca` | [viewer](https://orchid-project.org/phase-diagrams/#CE-GA/CeGa-19Liu.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CeGa-19Liu.json) |

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

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| CeGa-13Idb.tdb | 1253.2 | LIQUID (x(Ga) 0.40015) + CEGA_B33 (x(Ga) 0.5) + CEGA2_C32 (x(Ga) 0.66667) |
| CeGa-13Idb.tdb | 1147.03 | LIQUID (x(Ga) 0.34465) + CE3GA2 (x(Ga) 0.4) + CEGA_B33 (x(Ga) 0.5) |
| CeGa-13Idb.tdb | 1000 | BCC_A2 (x(Ga) 0) + FCC_A1 (x(Ga) 0) + LIQUID (x(Ga) 0.03014) |
| CeGa-13Idb.tdb | 929.57 | CEGA2_C32 (x(Ga) 0.75577) + CEGA6_HT (x(Ga) 0.85714) + LIQUID (x(Ga) 0.96048) |
| CeGa-13Idb.tdb | 843.6 | LIQUID (x(Ga) 0.18248) + CE3GA_L12 (x(Ga) 0.25) + CE3GA2 (x(Ga) 0.4) |
| CeGa-13Idb.tdb | 759.46 | FCC_A1 (x(Ga) 0) + LIQUID (x(Ga) 0.1156) + CE3GA_L12 (x(Ga) 0.25) |
| CeGa-13Idb.tdb | 749.86 | CEGA2_C32 (x(Ga) 0.74567) + CEGA6_LT (x(Ga) 0.85714) + CEGA6_HT (x(Ga) 0.85714) |
| CeGa-13Idb.tdb | 749.86 | CEGA6_LT (x(Ga) 0.85714) + CEGA6_HT (x(Ga) 0.85714) + LIQUID (x(Ga) 0.97297) |
| CeGa-13Idb.tdb | 302.46 | CEGA6_LT (x(Ga) 0.85714) + LIQUID (x(Ga) 0.99735) + ORTHORHOMBIC_A11 (x(Ga) 1) |
| CeGa-19Liu.tdb | 1232.41 | LIQUID (x(Ga) 0.415) + CEGA_B33 (x(Ga) 0.5) + CEGA2_C32 (x(Ga) 0.66665) |
| CeGa-19Liu.tdb | 1232.41 | LIQUID (x(Ga) 0.41501) + CEGA_B33 (x(Ga) 0.5) + CEGA2_C32 (x(Ga) 0.66665) |
| CeGa-19Liu.tdb | 1122.39 | LIQUID (x(Ga) 0.36226) + CE3GA2 (x(Ga) 0.4) + CEGA_B33 (x(Ga) 0.5) |
| CeGa-19Liu.tdb | 1122.39 | LIQUID (x(Ga) 0.3622) + CE3GA2 (x(Ga) 0.4) + CEGA_B33 (x(Ga) 0.5) |
| CeGa-19Liu.tdb | 1122.39 | LIQUID (x(Ga) 0.36239) + CE3GA2 (x(Ga) 0.4) + CEGA_B33 (x(Ga) 0.5) |
| CeGa-19Liu.tdb | 1071.99 | BCC_A2 (x(Ga) 0) + LIQUID (x(Ga) 0) + CEGA2_C32 (x(Ga) 0.66667) |
| CeGa-19Liu.tdb | 1000 | BCC_A2 (x(Ga) 0) + FCC_A1 (x(Ga) 0) + LIQUID (x(Ga) 0.07679) |
| CeGa-19Liu.tdb | 1000 | FCC_A1 (x(Ga) 0) + BCC_A2 (x(Ga) 0) + LIQUID (x(Ga) 0.07659) |
| CeGa-19Liu.tdb | 911.11 | CEGA2_C32 (x(Ga) 0.7684) + CEGA6_HT (x(Ga) 0.85714) + LIQUID (x(Ga) 0.89584) |
| CeGa-19Liu.tdb | 830.15 | LIQUID (x(Ga) 0.21725) + CE3GA_L12 (x(Ga) 0.25) + CE3GA2 (x(Ga) 0.4) |
| CeGa-19Liu.tdb | 830.15 | LIQUID (x(Ga) 0.21722) + CE3GA_L12 (x(Ga) 0.25) + CE3GA2 (x(Ga) 0.4) |
| CeGa-19Liu.tdb | 830.15 | LIQUID (x(Ga) 0.21748) + CE3GA_L12 (x(Ga) 0.25) + CE3GA2 (x(Ga) 0.4) |
| CeGa-19Liu.tdb | 807.23 | FCC_A1 (x(Ga) 0) + LIQUID (x(Ga) 0.1726) + CE3GA_L12 (x(Ga) 0.25) |
| CeGa-19Liu.tdb | 807.23 | FCC_A1 (x(Ga) 0) + LIQUID (x(Ga) 0.17262) + CE3GA_L12 (x(Ga) 0.25) |
| CeGa-19Liu.tdb | 807.23 | FCC_A1 (x(Ga) 0) + LIQUID (x(Ga) 0.17255) + CE3GA_L12 (x(Ga) 0.25) |
| CeGa-19Liu.tdb | 748.26 | CEGA2_C32 (x(Ga) 0.76579) + CEGA6_LT (x(Ga) 0.85714) + CEGA6_HT (x(Ga) 0.85714) |
| CeGa-19Liu.tdb | 748.26 | CEGA6_HT (x(Ga) 0.85714) + CEGA6_LT (x(Ga) 0.85714) + LIQUID (x(Ga) 0.93374) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/CE/CE-GA.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/CE/CE-GA.json) · [CALPHAD hull CeGa-13Idb](https://data.orchid-project.org/hulls/calphad-sgte/CE/CE-GA--CeGa-13Idb.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Ce–Ga system (43)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1233.15 | Liq + CeGa2 -> CeGa | Liq: Ga 0.421; CeGa2: Ga 0.666667; CeGa: Ga 0.5 | experimental | [1] Idbenali 2013; _cites Massalski 1990_ | Table 3, p. 5, row 11; `ORC-H4XSN3XBPC` |  |
| 1233 | liq + CeGa2 → CeGa | L: Ga 0.421; CeGa2: Ga 0.666667; CeGa: Ga 0.5 | model | [2] Liu 2019; _cites Massalski 1990_ | Table 2, p. 5, row 15; `ORC-XFG5W6OIMC` |  |
| 1233 | liq + CeGa2 → CeGa | L: Ga 0.415; CeGa2: Ga 0.6667; CeGa: Ga 0.5 | model | [2] Liu 2019 | Table 2, p. 5, row 14; `ORC-ZW5AMEM77G` |  |
| 1231.15 | Liq + CeGa2 -> CeGa | Liq: Ga 0.4086; CeGa2: Ga 0.666667; CeGa: Ga 0.5 | model | [1] Idbenali 2013 | Table 3, p. 5, row 12; `ORC-ZP34KGBDTR` |  |
| 1231 | liq + CeGa2 → CeGa | L: Ga 0.4086; CeGa2: Ga 0.666667; CeGa: Ga 0.5 | model | [2] Liu 2019; _cites Idbenali 2013_ [doi](https://doi.org/10.1007/s11669-013-0261-y) | Table 2, p. 5, row 16; `ORC-EVKMMKF6AF` |  |
| 1127.15 | Liq + CeGa -> Ce3Ga2 | Liq: Ga 0.3564; CeGa: Ga 0.5; Ce3Ga2: Ga 0.4 | model | [1] Idbenali 2013 | Table 3, p. 5, row 10; `ORC-VUDNTIHTDA` |  |
| 1127 | liq + CeGa → Ce3Ga2 | L: Ga 0.3564; CeGa: Ga 0.5; Ce3Ga2: Ga 0.4 | model | [2] Liu 2019; _cites Idbenali 2013_ [doi](https://doi.org/10.1007/s11669-013-0261-y) | Table 2, p. 5, row 13; `ORC-GWRQHWTOMD` |  |
| 1123.15 | Liq + CeGa -> Ce3Ga2 | Liq: Ga 0.37; CeGa: Ga 0.5; Ce3Ga2: Ga 0.4 | experimental | [1] Idbenali 2013; _cites Massalski 1990_ | Table 3, p. 5, row 9; `ORC-OZJHLIV7WF` |  |
| 1123 | liq + CeGa → Ce3Ga2 | L: Ga 0.37; CeGa: Ga 0.5; Ce3Ga2: Ga 0.4 | model | [2] Liu 2019; _cites Massalski 1990_ | Table 2, p. 5, row 12; `ORC-3RACPDPED3` |  |
| 1123 | liq + CeGa → Ce3Ga2 | L: Ga 0.3623; CeGa: Ga 0.5; Ce3Ga2: Ga 0.6667 | model | [2] Liu 2019 | Table 2, p. 5, row 11; `ORC-TT4DHSIATU` |  |
| 1000.15 | Liq + (Ce_HT2) -> (Ce)HT_1 | Liq: Ga 0.031 | model | [1] Idbenali 2013 | Table 3, p. 5, row 6; `ORC-QBDMOF4TGI` |  |
| 1000 | liq. + bcc (Ce) → fcc(Ce) | L: Ga 0.0767 | model | [2] Liu 2019 | Table 2, p. 5, row 5; `ORC-RA66GWCKZC` |  |
| 1000 | liq. + bcc (Ce) → fcc(Ce) | L: Ga 0.031 | model | [2] Liu 2019; _cites Idbenali 2013_ [doi](https://doi.org/10.1007/s11669-013-0261-y) | Table 2, p. 5, row 7; `ORC-SGWRJWXNUN` |  |
| 999.15 | Liq + (Ce_HT2) -> (Ce)HT_1 | Liq: Ga 0.058 | experimental | [1] Idbenali 2013; _cites Massalski 1990_ | Table 3, p. 5, row 5; `ORC-ZO6PTNZLYG` |  |
| 999 | liq. + bcc (Ce) → fcc(Ce) | L: Ga 0.058 | model | [2] Liu 2019; _cites Massalski 1990_ | Table 2, p. 5, row 6; `ORC-OXD6JGBVEO` |  |
| 911.35 | Liq + CeGa2 -> CeGa6_HT | Liq: Ga 0.9438; CeGa2: Ga 0.666667; CeGa6_HT: Ga 0.857143 | model | [1] Idbenali 2013 | Table 3, p. 5, row 16; `ORC-IUWOXUIJ4O` |  |
| 911 | liq + CeGa2 → β-CeGa6 | L: Ga 0.9438; CeGa2: Ga 0.666667; β-CeGa6: Ga 0.857143 | model | [2] Liu 2019; _cites Idbenali 2013_ [doi](https://doi.org/10.1007/s11669-013-0261-y) | Table 2, p. 5, row 24; `ORC-W4Q2KDWW5C` |  |
| 910.15 | Liq + CeGa2 -> CeGa6_HT | Liq: Ga 0.956; CeGa2: Ga 0.666667; CeGa6_HT: Ga 0.857143 | experimental | [1] Idbenali 2013; _cites Massalski 1990_ | Table 3, p. 5, row 15; `ORC-X5GFAIPE4J` |  |
| 910 | liq + CeGa2 → β-CeGa6 | L: Ga 0.8958; CeGa2: Ga 0.7794; β-CeGa6: Ga 0.8571 | model | [2] Liu 2019 | Table 2, p. 5, row 22; `ORC-EXVDK4AP4M` |  |
| 910 | liq + CeGa2 → β-CeGa6 | L: Ga 0.956; CeGa2: Ga 0.666667; β-CeGa6: Ga 0.857143 | model | [2] Liu 2019; _cites Massalski 1990_ | Table 2, p. 5, row 23; `ORC-TOSNBHUEDA` |  |
| 837.85 | Liq + Ce3Ga2 -> Ce3Ga | Liq: Ga 0.1922; Ce3Ga2: Ga 0.4; Ce3Ga: Ga 0.25 | model | [1] Idbenali 2013 | Table 3, p. 5, row 8; `ORC-VFK2UIAYF2` |  |
| 837 | liq + Ce3Ga2 → Ce3Ga | L: Ga 0.1922; Ce3Ga2: Ga 0.4; Ce3Ga: Ga 0.25 | model | [2] Liu 2019; _cites Idbenali 2013_ [doi](https://doi.org/10.1007/s11669-013-0261-y) | Table 2, p. 5, row 10; `ORC-C3WQ3QQFPT` |  |
| 830.15 | Liq + Ce3Ga2 -> Ce3Ga | Liq: Ga 0.207; Ce3Ga2: Ga 0.4; Ce3Ga: Ga 0.25 | experimental | [1] Idbenali 2013; _cites Massalski 1990_ | Table 3, p. 5, row 7; `ORC-RAVS5BEELW` |  |
| 830 | liq + Ce3Ga2 → Ce3Ga | L: Ga 0.207; Ce3Ga2: Ga 0.4; Ce3Ga: Ga 0.25 | model | [2] Liu 2019; _cites Massalski 1990_ | Table 2, p. 5, row 9; `ORC-E6K6E3UIGO` |  |
| 830 | liq + Ce3Ga2 → Ce3Ga | L: Ga 0.2172; Ce3Ga2: Ga 0.4; Ce3Ga: Ga 0.25 | model | [2] Liu 2019 | Table 2, p. 5, row 8; `ORC-IGAOIMWDXC` |  |
| 807 | eutectic: liq. → Ce3Ga + fcc (Ce) | L: Ga 0.1726; Ce3Ga: Ga 0.25; fcc (Ce): Ga 0 | model | [2] Liu 2019 | Table 2, p. 5, row 1; `ORC-3AZV73XCSO` |  |
| 773 | eutectic: liq. → Ce3Ga + fcc (Ce) | L: Ga 0.6667; Ce3Ga: Ga 0.25 | experimental | [2] Liu 2019; _cites Yatsenko 1979_ [doi](https://doi.org/10.1016/0022-5088%2879%2990170-x) | Table 2, p. 5, row 4; `ORC-6MYJVWIGGB` |  |
| 768.15 | eutectic: Liq -> Ce3Ga + (Ce)\_HT1 | Liq: Ga 0.18; Ce3Ga: Ga 0.25 | experimental | [1] Idbenali 2013; _cites Massalski 1990_ | Table 3, p. 5, row 3; `ORC-QVCY5GECHW` |  |
| 768 | eutectic: liq. → Ce3Ga + fcc (Ce) | L: Ga 0.18; Ce3Ga: Ga 0.25 | model | [2] Liu 2019; _cites Massalski 1990_ | Table 2, p. 5, row 2; `ORC-L5URH3X5MH` |  |
| 755 | eutectic: liq. → Ce3Ga + fcc (Ce) | L: Ga 0.119; Ce3Ga: Ga 0.25 | model | [2] Liu 2019; _cites Idbenali 2013_ [doi](https://doi.org/10.1007/s11669-013-0261-y) | Table 2, p. 5, row 3; `ORC-ZVXGGOY7FD` |  |
| 754.95 | eutectic: Liq -> Ce3Ga + (Ce)\_HT1 | Liq: Ga 0.119; Ce3Ga: Ga 0.25 | model | [1] Idbenali 2013 | Table 3, p. 5, row 4; `ORC-3LXHDQWZ7G` |  |
| 750.15 | Liq + CeGa2 -> CeGa6_LT | Liq: Ga 0.977; CeGa2: Ga 0.666667; CeGa6_LT: Ga 0.857143 | experimental | [1] Idbenali 2013; _cites Massalski 1990_ | Table 3, p. 5, row 17; `ORC-KPFN67EERM` |  |
| 750.05 | Liq + CeGa2 -> CeGa6_LT | Liq: Ga 0.9523; CeGa2: Ga 0.666667; CeGa6_LT: Ga 0.857143 | model | [1] Idbenali 2013 | Table 3, p. 5, row 18; `ORC-LCUDNEQ6EC` |  |
| 750 | liq + CeGa2 → α-CeGa6 | L: Ga 0.977; CeGa2: Ga 0.666667; α-CeGa6: Ga 0.857143 | model | [2] Liu 2019; _cites Massalski 1990_ | Table 2, p. 5, row 26; `ORC-3CAWDFBZ3L` |  |
| 750 | liq + CeGa2 → α-CeGa6 | L: Ga 0.9523; CeGa2: Ga 0.666667; α-CeGa6: Ga 0.857143 | model | [2] Liu 2019; _cites Idbenali 2013_ [doi](https://doi.org/10.1007/s11669-013-0261-y) | Table 2, p. 5, row 27; `ORC-SAQYJPFUUL` |  |
| 748 | liq + CeGa2 → α-CeGa6 | L: Ga 0.9337; CeGa2: Ga 0.7778; α-CeGa6: Ga 0.8571 | model | [2] Liu 2019 | Table 2, p. 5, row 25; `ORC-2ONIOCXQVT` |  |
| 334.15 | (Ce_HT1) + Ce3Ga -> (Ce_RT) |  | experimental | [1] Idbenali 2013; _cites Massalski 1990_ | Table 3, p. 5, row 1; `ORC-4FJERAZNFR` |  |
| 334.15 | (Ce_HT1) + Ce3Ga -> (Ce_RT) |  | model | [1] Idbenali 2013 | Table 3, p. 5, row 2; `ORC-CNGZRG26PP` |  |
| 303 | eutectic: liq → α-CeGa6 + orth.(Ga) | L: Ga 0.9995; α-CeGa6: Ga 0.857143; orth.(Ga): Ga 1 | model | [2] Liu 2019; _cites Idbenali 2013_ [doi](https://doi.org/10.1007/s11669-013-0261-y) | Table 2, p. 5, row 30; `ORC-YO3LYU2SBB` |  |
| 302.95 | eutectic: Liq -> CeGa6-LT + (Ga) | Liq: Ga 0.9995; CeGa6-LT: Ga 0.857143; (Ga): Ga 1 | model | [1] Idbenali 2013 | Table 3, p. 5, row 20; `ORC-K3K3ERATEH` |  |
| 302.15 | eutectic: Liq -> CeGa6-LT + (Ga) | Liq: Ga 0.01; CeGa6-LT: Ga 0.857143; (Ga): Ga 1 | experimental | [1] Idbenali 2013; _cites Massalski 1990_ | Table 3, p. 5, row 19; `ORC-BM3KPIZOUB` |  |
| 302 | eutectic: liq → α-CeGa6 + orth.(Ga) | L: Ga 1; α-CeGa6: Ga 0.857143; orth.(Ga): Ga 1 | model | [2] Liu 2019; _cites Massalski 1990_ | Table 2, p. 5, row 29; `ORC-P26RYH2VD5` |  |
| 300 | eutectic: liq → α-CeGa6 + orth.(Ga) | L: Ga 0.9937; α-CeGa6: Ga 0.8571; orth.(Ga): Ga 1 | model | [2] Liu 2019 | Table 2, p. 5, row 28; `ORC-CNMCA5FRAC` |  |

## 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, Ce–Ga system (20)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| Ce0.21Ga0.79 |  | -51.5 kJ/mol-atom ± 1.4 | 298.15 | experimental |  |  | [1] Idbenali 2013; _cites F 1998_ | Table 4, p. 6, row 8; `ORC-377G72NYL5.16f26c` |  |
| Ce0.21Ga0.79 |  | -46.1 kJ/mol-atom | 298.15 | model |  |  | [1] Idbenali 2013; _cites Chkhikvadze 1977_ | Table 4, p. 6, row 7; `ORC-PPWUOCEIXE.cb8335` |  |
| Ce0.21Ga0.79 |  | -36.7 kJ/mol-atom ± 2.9 | 298.15 | experimental |  |  | [1] Idbenali 2013; _cites F 1998_ | Table 4, p. 6, row 6; `ORC-P74KIVIPMK.138e01` |  |
| Ce3Ga | [Ce3Ga](https://data.orchid-project.org/compounds/Ce3Ga.html) | -50.727 kJ/mol-atom | 298.15 | model | -24.233 (mp-aaaabdme) | -21.97 (oqmd-17084) | [1] Idbenali 2013 | Table 4, p. 6, row 20; `ORC-37LPJAG4ZJ.937fc4` |  |
| Ce3Ga2 | [Ce3Ga2](https://data.orchid-project.org/compounds/Ce3Ga2.html) | -69.036 kJ/mol-atom | 298.15 | model | -35.389 (mp-aaackyfv) | -44.021 (oqmd-1450840) | [1] Idbenali 2013 | Table 4, p. 6, row 19; `ORC-WI2T4P6TEC.3da4eb` |  |
| Ce3Ga2 | [Ce3Ga2](https://data.orchid-project.org/compounds/Ce3Ga2.html) | -64.6 kJ/mol-atom | 298.15 | model | -35.389 (mp-aaackyfv) | -44.021 (oqmd-1450840) | [1] Idbenali 2013; _cites Chkhikvadze 1977_ | Table 4, p. 6, row 18; `ORC-KJJBW3VXNQ.23db3f` |  |
| CeGa | [CeGa](https://data.orchid-project.org/compounds/CeGa.html) | -71.1 kJ/mol-atom ± 2.7 | 298.15 | experimental | -45.635 (mp-aaacfyim) | -55.036 (oqmd-29083) | [1] Idbenali 2013; _cites F 1998_ | Table 4, p. 6, row 17; `ORC-WAK6DH7EG3.0397c2` |  |
| CeGa | [CeGa](https://data.orchid-project.org/compounds/CeGa.html) | -70.212 kJ/mol-atom | 298.15 | model | -45.635 (mp-aaacfyim) | -55.036 (oqmd-29083) | [1] Idbenali 2013 | Table 4, p. 6, row 16; `ORC-CZWVHOXBDH.769d07` |  |
| CeGa | [CeGa](https://data.orchid-project.org/compounds/CeGa.html) | -64.6 kJ/mol-atom | 298.15 | model | -45.635 (mp-aaacfyim) | -55.036 (oqmd-29083) | [1] Idbenali 2013; _cites Chkhikvadze 1977_ | Table 4, p. 6, row 15; `ORC-U3MDT2FWU5.312a9b` |  |
| CeGa2 | [CeGa2](https://data.orchid-project.org/compounds/CeGa2.html) | -102.6 kJ/mol-atom ± 0.1 | 298.15 | experimental | -56.989 (mp-aaaaadgz) | -66.477 (oqmd-662528) | [1] Idbenali 2013; _cites Yatsenko 1972_ | Table 4, p. 6, row 9; `ORC-2LFWDBVXDS.10da99` |  |
| CeGa2 | [CeGa2](https://data.orchid-project.org/compounds/CeGa2.html) | -88.9 kJ/mol-atom ± 0.8 | 298.15 | experimental | -56.989 (mp-aaaaadgz) | -66.477 (oqmd-662528) | [1] Idbenali 2013; _cites Vnuchkova 1971_ | Table 4, p. 6, row 10; `ORC-RU5ZAH5SZ4.a45335` |  |
| CeGa2 | [CeGa2](https://data.orchid-project.org/compounds/CeGa2.html) | -84.1 kJ/mol-atom ± 1.9 | 298.15 | experimental | -56.989 (mp-aaaaadgz) | -66.477 (oqmd-662528) | [1] Idbenali 2013; _cites F 1998_ | Table 4, p. 6, row 14; `ORC-KVCKXHNYOJ.5e3d1d` |  |
| CeGa2 | [CeGa2](https://data.orchid-project.org/compounds/CeGa2.html) | -72.036 kJ/mol-atom | 298.15 | model | -56.989 (mp-aaaaadgz) | -66.477 (oqmd-662528) | [1] Idbenali 2013 | Table 4, p. 6, row 12; `ORC-B2ABHRFCI6.381ccf` |  |
| CeGa2 | [CeGa2](https://data.orchid-project.org/compounds/CeGa2.html) | -66.6 kJ/mol-atom | 298.15 | model | -56.989 (mp-aaaaadgz) | -66.477 (oqmd-662528) | [1] Idbenali 2013; _cites Chkhikvadze 1977_ | Table 4, p. 6, row 11; `ORC-FCSAKHB33K.253715` |  |
| CeGa2 | [CeGa2](https://data.orchid-project.org/compounds/CeGa2.html) | -57.382 kJ/mol-atom | 298.15 | model | -56.989 (mp-aaaaadgz) | -66.477 (oqmd-662528) | [1] Idbenali 2013 | Table 4, p. 6, row 13; `ORC-ZRZDG6UDAH.79d7f8` |  |
| CeGa6_HT | [CeGa6](https://data.orchid-project.org/compounds/CeGa6.html) | -52.8 kJ/mol-atom ± 3 | 298.15 | experimental | -31.098 (mp-aaaaabbj) | -34.197 (oqmd-19608) | [1] Idbenali 2013; _cites F 1998_ | Table 4, p. 6, row 2; `ORC-3DZQD5VPJE.4e94d2` |  |
| CeGa6_HT | [CeGa6](https://data.orchid-project.org/compounds/CeGa6.html) | -51.364 kJ/mol-atom | 298.15 | model | -31.098 (mp-aaaaabbj) | -34.197 (oqmd-19608) | [1] Idbenali 2013 | Table 4, p. 6, row 3; `ORC-I2EZZJHMZT.434fb9` |  |
| CeGa6_HT | [CeGa6](https://data.orchid-project.org/compounds/CeGa6.html) | -48.2 kJ/mol-atom ± 3.7 | 298.15 | experimental | -31.098 (mp-aaaaabbj) | -34.197 (oqmd-19608) | [1] Idbenali 2013; _cites F 1998_ | Table 4, p. 6, row 1; `ORC-LUZGT5ZL7C.458ada` |  |
| CeGa6_LT | [CeGa6](https://data.orchid-project.org/compounds/CeGa6.html) | -51.56 kJ/mol-atom | 298.15 | model | -31.098 (mp-aaaaabbj) | -34.197 (oqmd-19608) | [1] Idbenali 2013 | Table 4, p. 6, row 4; `ORC-UBPCCC4VRK.44e827` |  |
| CeGa6_LT | [CeGa6](https://data.orchid-project.org/compounds/CeGa6.html) | -30.9 kJ/mol-atom | 298.15 | model | -31.098 (mp-aaaaabbj) | -34.197 (oqmd-19608) | [1] Idbenali 2013; _cites Chkhikvadze 1977_ | Table 4, p. 6, row 5; `ORC-IFQYSR23SP.0ad264` |  |

## Other properties

### Phase transition (8)

Table: Phase transition, Ce–Ga system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 1463 K | 1463 | congruent transformation | model | [1] Idbenali 2013 | p. 5; `ORC-N3SAJ4EXIO` | “The congruent melting of CeGa2 calculated at 1463 K is in very good agreement with the experimental data of Ref 8.” |
| Phase transition | 1717 K | 1717 | liq → CeGa2; _L: Ga 0.6667; CeGa2: Ga 0.666667_ | model | [2] Liu 2019 | Table 2, p. 5, row 17; `ORC-RQL4VGAGGD` |  |
| Phase transition | 1717 K | 1717 | liq → CeGa2; _L: Ga 0.666667; CeGa2: Ga 0.666667_ | experimental | [2] Liu 2019; _cites Dayan 1979_ [doi](https://doi.org/10.1016/0022-5088%2879%2990057-2) | Table 2, p. 5, row 21; `ORC-UAPE6NNLM2` |  |
| Phase transition | 1727 K | 1727 | liq → CeGa2; _L: Ga 0.6667; CeGa2: Ga 0.666667_ | model | [2] Liu 2019; _cites Massalski 1990_ | Table 2, p. 5, row 19; `ORC-QJSFHJHB4V` |  |
| Phase transition | 1727 K | 1727 | liq → CeGa2; _L: Ga 0.6667; CeGa2: Ga 0.666667_ | model | [2] Liu 2019; _cites Idbenali 2013_ [doi](https://doi.org/10.1007/s11669-013-0261-y) | Table 2, p. 5, row 20; `ORC-VVC6ZPSCA5` |  |
| Phase transition | 1727.15 K | 1727.15 | Liq -> CeGa2; _Liq: Ga 0.667; CeGa2: Ga 0.666667_ | model | [1] Idbenali 2013 | Table 3, p. 5, row 14; `ORC-ZWFIQOXBC3` |  |
| Phase transition | 1733 K | 1733 | liq → CeGa2; _L: Ga 0.6667; CeGa2: Ga 0.666667_ | experimental | [2] Liu 2019; _cites Yatsenko 1979_ [doi](https://doi.org/10.1016/0022-5088%2879%2990170-x) | Table 2, p. 5, row 18; `ORC-ADKTXYKVCQ` |  |
| Phase transition | 1733.15 K | 1733.15 | Liq -> CeGa2; _Liq: Ga 0.667; CeGa2: Ga 0.666667_ | experimental | [1] Idbenali 2013; _cites Massalski 1990_ | Table 3, p. 5, row 13; `ORC-VZART7C3LI` |  |

## Sources

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

1. Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y)
2. Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8)

## 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/).