# Bi–Er system

> Bi–Er system: 145 accepted literature values (formation 63, invariant reaction 38, crystal structure 29, activity / EMF / Gibbs energy 12) and 3 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/BI-ER.html · Markdown: https://data.orchid-project.org/systems/BI-ER.md

145 accepted literature values from 3 paper(s) (experimental 40, model 67, DFT 31, unspecified 7); 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/BI-ER.json) · [CSV](https://data.orchid-project.org/systems/BI-ER.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#BI-ER) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#BI-ER/BiEr-13Wan.json) · [phases (9)](https://data.orchid-project.org/phases/pages/BI-ER.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/BI-ER.html) · [Markdown](https://data.orchid-project.org/systems/BI-ER.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 40 |
| model | 67 |
| DFT | 31 |
| unspecified | 7 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 38 |
| phase transition | 3 |
| formation | 63 |
| activity / EMF / Gibbs energy | 12 |
| crystal structure | 29 |

## 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 |
|---|---|---|---|
| BiEr-13Wan.tdb | J. Wang, C. Li, C. Guo, Z. Du, B. Wu, Thermochim. Acta, 566, 44-49(2013). [doi:10.1016/j.tca.2013.05.024](https://doi.org/10.1016/j.tca.2013.05.024) | `1fa218775bc6a20ff2da0982631dca45e5a29177c084c67abe34dfca352262bd` | [viewer](https://orchid-project.org/phase-diagrams/#BI-ER/BiEr-13Wan.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/BiEr-13Wan.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/BiEr-13Wan.json) |
| BiEr-17Wan.tdb | Y. Wang, W. Zhou, S. Guo, J. Zhang, J. Nucl. Mater., 495, 181-91(2017). [doi:10.1016/j.jnucmat.2017.08.016](https://doi.org/10.1016/j.jnucmat.2017.08.016) | `dfdba02348cf0f120d32b5055da1e2051603de5fa1458cb43eb113f395d0b6cb` | [viewer](https://orchid-project.org/phase-diagrams/#BI-ER/BiEr-17Wan.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/BiEr-17Wan.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/BiEr-17Wan.json) |
| BiEr-22Ben.tdb | S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, J. Phase Equilib. Diffus., 43, 126-38(2022). [doi:10.1007/s11669-022-00947-8](https://doi.org/10.1007/s11669-022-00947-8) | `f4719f37425c3c710d70489e86a3879bc31e70b40e9e6192c0eb924a0d58a565` | [viewer](https://orchid-project.org/phase-diagrams/#BI-ER/BiEr-22Ben.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/BiEr-22Ben.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/BiEr-22Ben.json) |

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

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| BiEr-13Wan.tdb | 1700.49 | BIER_B1 (x(Er) 0.5) + BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.68591) |
| BiEr-13Wan.tdb | 1700.49 | BIER_B1 (x(Er) 0.5) + BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.68597) |
| BiEr-13Wan.tdb | 1700.49 | BIER_B1 (x(Er) 0.5) + BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.68568) |
| BiEr-13Wan.tdb | 1433.9 | BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.81228) + HCP_A3 (x(Er) 1) |
| BiEr-13Wan.tdb | 1433.9 | BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.81226) + HCP_A3 (x(Er) 1) |
| BiEr-13Wan.tdb | 1433.9 | BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.8123) + HCP_A3 (x(Er) 1) |
| BiEr-13Wan.tdb | 1433.9 | BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.81235) + HCP_A3 (x(Er) 1) |
| BiEr-13Wan.tdb | 541 | RHOMBOHEDRAL_A7 (x(Er) 0) + LIQUID (x(Er) 0.01267) + BIER_B1 (x(Er) 0.5) |
| BiEr-13Wan.tdb | 541 | RHOMBOHEDRAL_A7 (x(Er) 0) + LIQUID (x(Er) 0.01263) + BIER_B1 (x(Er) 0.5) |
| BiEr-17Wan.tdb | 1700.9 | BIER_B1 (x(Er) 0.5) + BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.68351) |
| BiEr-17Wan.tdb | 1700.9 | BIER_B1 (x(Er) 0.5) + BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.68354) |
| BiEr-17Wan.tdb | 1700.9 | BIER_B1 (x(Er) 0.5) + BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.6833) |
| BiEr-17Wan.tdb | 1433.54 | BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.8095) + HCP_A3 (x(Er) 0.99211) |
| BiEr-17Wan.tdb | 1433.54 | BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.80955) + HCP_A3 (x(Er) 0.99212) |
| BiEr-17Wan.tdb | 542.92 | RHOMBOHEDRAL_A7 (x(Er) 0) + LIQUID (x(Er) 0.00712) + BIER_B1 (x(Er) 0.5) |
| BiEr-17Wan.tdb | 542.92 | RHOMBOHEDRAL_A7 (x(Er) 0) + LIQUID (x(Er) 0.00697) + BIER_B1 (x(Er) 0.5) |
| BiEr-22Ben.tdb | 2048.04 | BIER_B1 (x(Er) 0.5) + BIER_HT (x(Er) 0.5) + LIQUID (x(Er) 0.57532) |
| BiEr-22Ben.tdb | 2048.04 | LIQUID (x(Er) 0.41289) + BIER_B1 (x(Er) 0.5) + BIER_HT (x(Er) 0.5) |
| BiEr-22Ben.tdb | 1700.87 | BIER_B1 (x(Er) 0.5) + BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.67383) |
| BiEr-22Ben.tdb | 1432.67 | BI3ER5 (x(Er) 0.625) + LIQUID (x(Er) 0.81667) + HCP_A3 (x(Er) 0.98613) |
| BiEr-22Ben.tdb | 861.11 | LIQUID (x(Er) 0.08225) + BI2ER (x(Er) 0.33333) + BIER_B1 (x(Er) 0.5) |
| BiEr-22Ben.tdb | 543.32 | RHOMBOHEDRAL_A7 (x(Er) 0) + LIQUID (x(Er) 0.00527) + BI2ER (x(Er) 0.33333) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/BI/BI-ER.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/BI/BI-ER.json) · [CALPHAD hull BiEr-13Wan](https://data.orchid-project.org/hulls/calphad-sgte/BI/BI-ER--BiEr-13Wan.json) · [CALPHAD hull BiEr-17Wan](https://data.orchid-project.org/hulls/calphad-sgte/BI/BI-ER--BiEr-17Wan.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Bi–Er system (38)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 2134 | congruent melting: L ↔ ErBi | L: Er 0.5; ErBi: Er 0.5 | model | [1] Bennoui 2022 | Table 5, p. 8, row 5; `ORC-FQPPU6MLD4` |  |
| 2133 | congruent melting: L ↔ ErBi | L: Er 0.5; ErBi: Er 0.5 | experimental | [1] Bennoui 2022; _cites Abdusalyamova 2002_ [doi](https://doi.org/10.1515/zna-2002-9-1016) | Table 5, p. 8, row 7; `ORC-3BMC7JOZIH` |  |
| 2080 | congruent melting: L ↔ ErBi | L: Er 0.5; ErBi: Er 0.5 | model | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 5, p. 8, row 8; `ORC-BVTN57ZSZ6` |  |
| 2080 | congruent melting: L ↔ ErBi | L: Er 0.5; ErBi: Er 0.5 | experimental | [1] Bennoui 2022; _cites Abulkhaev 1993_ | Table 5, p. 8, row 6; `ORC-ES7K7CMHYM` |  |
| 2080 | congruent melting: L -> BiEr | L: Bi 0.5; BiEr: Bi 0.5, Er 0.5 | unspecified | [2] Wang 2013; _cites Abulkhaev 1992_ | Table 1, p. 2, row 5; `ORC-GZ5TB4UG4A` |  |
| 2080 | congruent melting: L -> BiEr | L: Bi 0.5; BiEr: Bi 0.5, Er 0.5 | model | [2] Wang 2013 | Table 1, p. 2, row 6; `ORC-XK44D5NSZS` |  |
| 2074 | congruent melting: L ↔ ErBi | L: Er 0.5; ErBi: Er 0.5 | model | [1] Bennoui 2022; _cites Wang 2017_ [doi](https://doi.org/10.1016/j.jnucmat.2017.08.016) | Table 5, p. 8, row 9; `ORC-ZGUWBQXQT3` |  |
| 2053 | polymorphic: β-ErBi ↔ α-ErBi | β-ErBi: Er 0.5; α-ErBi: Er 0.5 | experimental | [1] Bennoui 2022; _cites Abdusalyamova 2002_ [doi](https://doi.org/10.1515/zna-2002-9-1016) | Table 5, p. 8, row 11; `ORC-COJWNS5D5Q` |  |
| 2052 | polymorphic: β-ErBi ↔ α-ErBi | β-ErBi: Er 0.5; α-ErBi: Er 0.5 | model | [1] Bennoui 2022 | Table 5, p. 8, row 10; `ORC-JVVUCHFV2T` |  |
| 1701 | peritectic: L+ ErBi ↔ Er5Bi3 | L: Er 0.67; ErBi: Er 0.5; Er5Bi3: Er 0.625 | model | [1] Bennoui 2022 | Table 5, p. 8, row 12; `ORC-OVLXZCT5Q2` |  |
| 1701 | peritectic: L + ErBi -> Er5Bi3 | L: Er 0.6832; ErBi: Bi 0.5, Er 0.5; Er5Bi3: Bi 0.375, Er 0.625 | model | [3] Wang 2017 | Table 5, p. 6, row 4; `ORC-UNJVTVBABD` |  |
| 1700 | peritectic: L + BiEr -> Bi3Er5 | L: Bi 0.315; BiEr: Bi 0.5, Er 0.5; Bi3Er5: Bi 0.375, Er 0.625 | model | [2] Wang 2013 | Table 1, p. 2, row 4; `ORC-5MHPHTDQLR` |  |
| 1700 | peritectic: Er5Bi3 -> liquid + ErBi |  | experimental | [1] Bennoui 2022; _cites Kovenskaya 1977_ | p. 2; `ORC-DL2U6TAOPH` | “It is expected the Er5Bi3 bismuthide peritectically decomposes at 1700 K into liquid and solid ErBi phases.” |
| 1700 | peritectic: L+ ErBi ↔ Er5Bi3 | L: Er 0.68; ErBi: Er 0.5; Er5Bi3: Er 0.625 | experimental | [1] Bennoui 2022; _cites Abulkhaev 1993_ | Table 5, p. 8, row 13; `ORC-EQWCUG32Z5` |  |
| 1700 | peritectic |  | experimental | [1] Bennoui 2022 | p. 2; `ORC-ETSW5WUPBV` | “The Er5Bi3 phase is formed by peritectic reaction at 1700 K.” |
| 1700 | peritectic: L + BiEr -> Bi3Er5 | L: Bi 0.325; BiEr: Bi 0.5, Er 0.5; Bi3Er5: Bi 0.375, Er 0.625 | unspecified | [2] Wang 2013; _cites Abulkhaev 1992_ | Table 1, p. 2, row 3; `ORC-K4VNFRA3Z2` |  |
| 1700 | peritectic: L+ ErBi ↔ Er5Bi3 | L: Er 0.68; ErBi: Er 0.5; Er5Bi3: Er 0.625 | model | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 5, p. 8, row 15; `ORC-KXZ7VNYYP2` |  |
| 1700 | peritectic: L+ ErBi ↔ Er5Bi3 | L: Er 0.71; ErBi: Er 0.5; Er5Bi3: Er 0.625 | experimental | [1] Bennoui 2022; _cites Abdusalyamova 2002_ [doi](https://doi.org/10.1515/zna-2002-9-1016) | Table 5, p. 8, row 14; `ORC-LOW2RPSLJC` |  |
| 1700 | peritectic: L+ ErBi ↔ Er5Bi3 | L: Er 0.68; ErBi: Er 0.5; Er5Bi3: Er 0.625 | model | [1] Bennoui 2022; _cites Wang 2017_ [doi](https://doi.org/10.1016/j.jnucmat.2017.08.016) | Table 5, p. 8, row 16; `ORC-R7RTPWZRMX` |  |
| 1700 | peritectic: L + ErBi -> Er5Bi3 | L: Er 0.68; ErBi: Bi 0.5, Er 0.5; Er5Bi3: Bi 0.375, Er 0.625 | unspecified | [3] Wang 2017; _cites Abulkhaev 1992_ | Table 5, p. 6, row 3; `ORC-TRLT64GVC7` |  |
| 1434 | eutectic: L ↔ Er5Bi3+(Er) | L: Er 0.81; Er5Bi3: Er 0.625; (Er): Er 0.99 | model | [1] Bennoui 2022; _cites Wang 2017_ [doi](https://doi.org/10.1016/j.jnucmat.2017.08.016) | Table 5, p. 8, row 21; `ORC-6AQE3FNJGF` |  |
| 1434 | eutectic: L -> Bi3Er5 + Hcp_A3 (Er) | L: Bi 0.2; Bi3Er5: Bi 0.375, Er 0.625 | unspecified | [2] Wang 2013; _cites Abulkhaev 1992_ | Table 1, p. 2, row 1; `ORC-KFGUNWQBUC` |  |
| 1434 | eutectic: L ↔ Er5Bi3+(Er) | L: Er 0.81; Er5Bi3: Er 0.625; (Er): Er 1 | model | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 5, p. 8, row 20; `ORC-MYYXWG7RSZ` |  |
| 1434 | eutectic: L -> Bi3Er5 + Hcp_A3 (Er) | L: Bi 0.19; Bi3Er5: Bi 0.375, Er 0.625 | model | [2] Wang 2013 | Table 1, p. 2, row 2; `ORC-OOGUHFYSUS` |  |
| 1434 | eutectic: L -> Er5Bi3 + HCP_A3 (Er) | L: Er 0.8; Er5Bi3: Bi 0.375, Er 0.625 | unspecified | [3] Wang 2017; _cites Abulkhaev 1992_ | Table 5, p. 6, row 5; `ORC-PPF3ZYJJKH` |  |
| 1434 | eutectic: L -> Er5Bi3 + HCP_A3 (Er) | L: Er 0.8078; Er5Bi3: Bi 0.375, Er 0.625 | model | [3] Wang 2017 | Table 5, p. 6, row 6; `ORC-QNH2ED3CR6` |  |
| 1433 | eutectic: L ↔ Er5Bi3+(Er) | L: Er 0.82; Er5Bi3: Er 0.625; (Er): Er 0.985 | model | [1] Bennoui 2022 | Table 5, p. 8, row 17; `ORC-2EC6GLADTI` |  |
| 1433 | eutectic: L ↔ Er5Bi3+(Er) | L: Er 0.8; Er5Bi3: Er 0.625 | experimental | [1] Bennoui 2022; _cites Abulkhaev 1993_ | Table 5, p. 8, row 18; `ORC-J5WFV5RKZA` |  |
| 1423 | eutectic: L ↔ Er5Bi3+(Er) | L: Er 0.8; Er5Bi3: Er 0.625; (Er): Er 0.98 | experimental | [1] Bennoui 2022; _cites Abdusalyamova 2002_ [doi](https://doi.org/10.1515/zna-2002-9-1016) | Table 5, p. 8, row 19; `ORC-YUTDCNMANZ` |  |
| 868 | peritectic: L+ ErBi ↔ ErBi2 | L: Er 0.08; ErBi: Er 0.5; ErBi2: Er 0.333 | experimental | [1] Bennoui 2022; _cites Abdusalyamova 2002_ [doi](https://doi.org/10.1515/zna-2002-9-1016) | Table 5, p. 8, row 4; `ORC-5RMS4JZFCJ` |  |
| 868 | peritectic |  | experimental | [1] Bennoui 2022; _cites Abdusalyamova 2002_ [doi](https://doi.org/10.1515/zna-2002-9-1016) | p. 2; `ORC-6H4PMWCAPY` | “Later, Abdusalyamova and Rakhmatov\[18\] re-examined the phase diagram of the Er-Bi system using DTA, XRD and metallography, and they discovered a new stoichiometric compound ErBi2, that decomposes peritectically at 868 K.” |
| 868 | peritectic: L+ ErBi ↔ ErBi2 | L: Er 0.08; ErBi: Er 0.5; ErBi2: Er 0.333 | model | [1] Bennoui 2022 | Table 5, p. 8, row 3; `ORC-CI657WFAKG` |  |
| 868 | peritectic |  | experimental | [1] Bennoui 2022; _cites Abdusalyamova 2002_ [doi](https://doi.org/10.1515/zna-2002-9-1016) | p. 9; `ORC-WCTXHWQ4AN` | “intermetallic phase ErBi2 proposed by Abdusalyamova and Rachmatov\[18\] was confirmed with a peritectic decomposition at 868 K.” |
| 543 | eutectic: L ↔ (Bi) + ErBi2 | L: Er 0.005; (Bi): Er 0; ErBi2: Er 0.333 | model | [1] Bennoui 2022 | Table 5, p. 8, row 1; `ORC-7PVHNX4CYV` |  |
| 542.5 | eutectic: L -> rhombohedral (Bi) + ErBi | L: Er 0.0086; ErBi: Bi 0.5, Er 0.5 | model | [3] Wang 2017 | Table 5, p. 6, row 2; `ORC-NJ7H6VO7YG` |  |
| 542 | eutectic: L -> BiEr + Rhomb_A7 (Bi) | L: Bi 0.99; BiEr: Bi 0.5, Er 0.5 | unspecified | [2] Wang 2013; _cites Abulkhaev 1992_ | Table 1, p. 2, row 7; `ORC-UCDEA64QS3` |  |
| 542 | eutectic: L -> rhombohedral (Bi) + ErBi | L: Er 0.0084; ErBi: Bi 0.5, Er 0.5 | unspecified | [3] Wang 2017; _cites Abulkhaev 1992_ | Table 5, p. 6, row 1; `ORC-UJYVLSZUXL` |  |
| 542 | eutectic: L ↔ (Bi) + ErBi2 | L: Er 0.003; (Bi): Er 0; ErBi2: Er 0.333 | experimental | [1] Bennoui 2022; _cites Abdusalyamova 2002_ [doi](https://doi.org/10.1515/zna-2002-9-1016) | Table 5, p. 8, row 2; `ORC-VBW4RLIVR3` |  |

## 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, Bi–Er system (61)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| Bi3Er5 | [Bi3Er5](https://data.orchid-project.org/compounds/Bi3Er5.html) | -81 kJ/mol-atom | 298.15 | experimental | -62.124 (mp-aaaabuog) | -64.128 (oqmd-18567) | [2] Wang 2013; _cites Petrashkevich 1976_ | Table 4, p. 4, row 1; `ORC-XB7Q5N5BIW` |  |
| Bi3Er5 | [Bi3Er5](https://data.orchid-project.org/compounds/Bi3Er5.html) | -77 kJ/mol-atom | 298.15 | experimental | -62.124 (mp-aaaabuog) | -64.128 (oqmd-18567) | [2] Wang 2013; _cites Yamshchikov 1979_ | Table 4, p. 4, row 2; `ORC-6PH6DFEBQC` |  |
| Bi3Er5 | [Bi3Er5](https://data.orchid-project.org/compounds/Bi3Er5.html) | -69 kJ/mol-atom | 0 | model | -62.124 (mp-aaaabuog) | -64.128 (oqmd-18567) | [2] Wang 2013; _cites Colinet 1984_ [doi](https://doi.org/10.1016/0022-5088%2884%2990320-5) | Table 4, p. 4, row 4; `ORC-VBNO6R7IGV` |  |
| Bi3Er5 |  | -66.035 kJ/mol-atom | 0 | DFT |  |  | [2] Wang 2013 | Table 4, p. 4, row 3; `ORC-6RCIZWHPCE` |  |
| BiEr | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -109 kJ/mol-atom | 298.15 | experimental | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [2] Wang 2013; _cites Petrashkevich 1976_ | Table 4, p. 4, row 6; `ORC-5PXJYOITEU` |  |
| BiEr | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -103 kJ/mol-atom | 298.15 | experimental | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [2] Wang 2013; _cites Yamshchikov 1979_ | Table 4, p. 4, row 7; `ORC-N65XYEEHES` |  |
| BiEr | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -90 kJ/mol-atom | 298.15 | experimental | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [2] Wang 2013; _cites Borzone 1993_ [doi](https://doi.org/10.1007/bf02671968) | Table 4, p. 4, row 5; `ORC-OR35V2GB75` |  |
| BiEr |  | -82.069 kJ/mol-atom | 0 | DFT |  |  | [2] Wang 2013 | Table 4, p. 4, row 8; `ORC-CWNSNQEM3C` |  |
| BiEr | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -75 kJ/mol-atom | 0 | model | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [2] Wang 2013; _cites Colinet 1984_ [doi](https://doi.org/10.1016/0022-5088%2884%2990320-5) | Table 4, p. 4, row 9; `ORC-33LM5FGD4E` |  |
| Er5Bi3 | [Bi3Er5](https://data.orchid-project.org/compounds/Bi3Er5.html) | -81 kJ/mol-atom | 298.15 | experimental | -62.124 (mp-aaaabuog) | -64.128 (oqmd-18567) | [3] Wang 2017; _cites Petrashkevich 1976_ | Table 9, p. 7, row 7; `ORC-C6VB6CISVZ` |  |
| Er5Bi3 | [Bi3Er5](https://data.orchid-project.org/compounds/Bi3Er5.html) | -77 kJ/mol-atom | 298.15 | experimental | -62.124 (mp-aaaabuog) | -64.128 (oqmd-18567) | [3] Wang 2017; _cites Yamshchikov 1979_ | Table 9, p. 7, row 8; `ORC-BHVDCM4D65` |  |
| Er5Bi3 | [Bi3Er5](https://data.orchid-project.org/compounds/Bi3Er5.html) | -70.28 kJ/mol-atom |  | model | -62.124 (mp-aaaabuog) | -64.128 (oqmd-18567) | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 2, p. 5, row 21; `ORC-KQRUEKVUZ2` |  |
| Er5Bi3 | [Bi3Er5](https://data.orchid-project.org/compounds/Bi3Er5.html) | -69 kJ/mol-atom |  | model | -62.124 (mp-aaaabuog) | -64.128 (oqmd-18567) | [1] Bennoui 2022; _cites Colinet 1984_ [doi](https://doi.org/10.1016/0022-5088%2884%2990320-5) | Table 2, p. 5, row 23; `ORC-DP5TQ73QNF` |  |
| Er5Bi3 | [Bi3Er5](https://data.orchid-project.org/compounds/Bi3Er5.html) | -69 kJ/mol-atom |  | model | -62.124 (mp-aaaabuog) | -64.128 (oqmd-18567) | [3] Wang 2017; _cites Colinet 1984_ [doi](https://doi.org/10.1016/0022-5088%2884%2990320-5) | Table 9, p. 7, row 6; `ORC-RDKNFZEWL2` |  |
| Er5Bi3 | [Bi3Er5](https://data.orchid-project.org/compounds/Bi3Er5.html) | -66.486 kJ/mol-atom |  | model | -62.124 (mp-aaaabuog) | -64.128 (oqmd-18567) | [1] Bennoui 2022; _cites Wang 2017_ [doi](https://doi.org/10.1016/j.jnucmat.2017.08.016) | Table 2, p. 5, row 22; `ORC-NCVLRI3P2J` |  |
| Er5Bi3 | [Bi3Er5](https://data.orchid-project.org/compounds/Bi3Er5.html) | -66.486 kJ/mol-atom |  | model | -62.124 (mp-aaaabuog) | -64.128 (oqmd-18567) | [3] Wang 2017 | Table 9, p. 7, row 9; `ORC-Z6MHRZQXDW` |  |
| Er5Bi3 |  | -66.035 kJ/mol-atom | 0 | DFT |  |  | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 2, p. 5, row 20; `ORC-PDVG7NZMQP` |  |
| Er5Bi3 |  | -64.084 kJ/mol-atom | 0 | DFT |  |  | [1] Bennoui 2022; _cites Kirklin 2015_ [doi](https://doi.org/10.1038/npjcompumats.2015.10) | Table 2, p. 5, row 18; `ORC-Y4V2F5Q4GG` |  |
| Er5Bi3 |  | -63.496 kJ/mol-atom | 0 | DFT |  |  | [1] Bennoui 2022 | Table 2, p. 5, row 16; `ORC-5MVWEQDFIK` |  |
| Er5Bi3 | [Bi3Er5](https://data.orchid-project.org/compounds/Bi3Er5.html) | -62.917 kJ/mol-atom |  | model | -62.124 (mp-aaaabuog) | -64.128 (oqmd-18567) | [1] Bennoui 2022 | Table 2, p. 5, row 17; `ORC-BKIPLWISGK` |  |
| Er5Bi3 |  | -62.157 kJ/mol-atom | 0 | DFT |  |  | [1] Bennoui 2022; _cites Jain 2013_ [doi](https://doi.org/10.1063/1.4812323) | Table 2, p. 5, row 19; `ORC-IDWAU4QYRP` |  |
| ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -109 kJ/mol-atom | 298.15 | experimental | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [3] Wang 2017; _cites Petrashkevich 1976_ | Table 9, p. 7, row 2; `ORC-5QDJXROM6K` |  |
| ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -103 kJ/mol-atom | 298.15 | experimental | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [3] Wang 2017; _cites Yamshchikov 1979_ | Table 9, p. 7, row 4; `ORC-JMEDK7TWUJ` |  |
| ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -90 kJ/mol-atom | 298.15 | experimental | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [3] Wang 2017; _cites Borzone 1993_ [doi](https://doi.org/10.1007/bf02671968) | Table 9, p. 7, row 3; `ORC-WKRHFIUBRH` |  |
| ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -80.35 kJ/mol-atom |  | model | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [3] Wang 2017 | Table 9, p. 7, row 5; `ORC-YRUKERP3MD` |  |
| ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -75 kJ/mol-atom |  | model | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [3] Wang 2017; _cites Colinet 1984_ [doi](https://doi.org/10.1016/0022-5088%2884%2990320-5) | Table 9, p. 7, row 1; `ORC-5ZVDHF66MC` |  |
| ErBi2 | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -59 kJ/mol-atom |  | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022; _cites Colinet 1984_ [doi](https://doi.org/10.1016/0022-5088%2884%2990320-5) | Table 2, p. 5, row 3; `ORC-B4YW6VQB2Q` |  |
| ErBi2 | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -53.528 kJ/mol-atom |  | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 2, p. 5, row 2; `ORC-A2M3U4FPBD` |  |
| ErBi2 |  | -45.237 kJ/mol-atom | 0 | DFT |  |  | [1] Bennoui 2022 | Table 2, p. 5, row 1; `ORC-T73W2Q7GQU` |  |
| ErBi2 | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -45.2102 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 16; `ORC-RNQLUP2DQ2.bfef1d` |  |
| ErBi2 (Ag2Se-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -21.1173 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 5; `ORC-EU6UM5CD5I.82e8c9` |  |
| ErBi2 (Al2Cu-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -38.4406 kJ/mol-atom | 0 | model |  | -38.396 (oqmd-1039322) | [1] Bennoui 2022 | Table 3, p. 6, row 12; `ORC-FDHWA2ZJZ2.162694` |  |
| ErBi2 (AuTe2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -35.9422 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 11; `ORC-CX5BIIX36H.fe3002` |  |
| ErBi2 (CaSb2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -45.9664 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 17; `ORC-PI4ZPT7CTE.d7bbce` |  |
| ErBi2 (CdI2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | 39.6679 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 1; `ORC-JGZ6JOX4UO.9c10e5` |  |
| ErBi2 (Co2Si-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -45.1803 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 15; `ORC-74E3X52I5V.051343` |  |
| ErBi2 (CoSi2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -23.1992 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 6; `ORC-2YZ6I2ZUQR.aa9069` |  |
| ErBi2 (ErSb2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -16.5698 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 4; `ORC-BSP5HVTKXE.5b5e32` |  |
| ErBi2 (ErSn2-type) |  | -45.2102 kJ/mol-atom | 0 | DFT |  |  | [1] Bennoui 2022 | Table 3, p. 6, row 16; `ORC-RNQLUP2DQ2.750eda` |  |
| ErBi2 (ErTe2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -43.2532 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 13; `ORC-5EJ2FPR4WK.65e58d` |  |
| ErBi2 (Fe2P-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -25.1344 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 8; `ORC-W3SWCX6L7M.00c7b5` |  |
| ErBi2 (FeS2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -25.414 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 9; `ORC-GEYUFNWOTH.d937cf` |  |
| ErBi2 (FeS2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -15.4151 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 3; `ORC-O5HWMT2XBK.6b6e69` |  |
| ErBi2 (LaAs2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -43.6048 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 14; `ORC-UFI35ARGNT.33d659` |  |
| ErBi2 (MoS2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -23.4701 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 7; `ORC-PMTDM2PKPR.365482` |  |
| ErBi2 (MoS2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | 15.2241 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 2; `ORC-EKJ27B36M7.ea7c62` |  |
| ErBi2 (MoSi2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -33.6478 kJ/mol-atom | 0 | model |  | -33.717 (oqmd-1040064) | [1] Bennoui 2022 | Table 3, p. 6, row 10; `ORC-NLXQVFAVSW.def94e` |  |
| ErBi2 (NdAs2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -48.2365 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 19; `ORC-YREA7LF56F.58970b` |  |
| ErBi2 (SmSb2-type) | [Bi2Er](https://data.orchid-project.org/compounds/Bi2Er.html) | -47.7533 kJ/mol-atom | 0 | model |  | -46.37 (oqmd-1800946) | [1] Bennoui 2022 | Table 3, p. 6, row 18; `ORC-QFM5YOHCMB.7da6f4` |  |
| α-ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -109 kJ/mol-atom | 298.15 | experimental | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [1] Bennoui 2022; _cites Petrashkevich 1976_ | Table 2, p. 5, row 12; `ORC-R3XMVG3435` |  |
| α-ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -103 kJ/mol-atom | 298.15 | experimental | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [1] Bennoui 2022; _cites Yamshchikov 1979_ | Table 2, p. 5, row 11; `ORC-TNA42H5AGZ` |  |
| α-ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -101.3 kJ/mol-atom | 298.15 | experimental | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [1] Bennoui 2022; _cites Sidorko 2011_ [doi](https://doi.org/10.1007/s11106-011-9339-4) | Table 2, p. 5, row 14; `ORC-3SDDAYGON5` |  |
| α-ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -90 kJ/mol-atom | 298.15 | experimental | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [1] Bennoui 2022; _cites Borzone 1993_ [doi](https://doi.org/10.1007/bf02671968) | Table 2, p. 5, row 13; `ORC-IGNPH6MP2Y` |  |
| α-ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -83.62 kJ/mol-atom |  | model | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 2, p. 5, row 9; `ORC-2TNNH45GCL` |  |
| α-ErBi |  | -82.069 kJ/mol-atom | 0 | DFT |  |  | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 2, p. 5, row 8; `ORC-6Y27WU6GQL` |  |
| α-ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -80.35 kJ/mol-atom |  | model | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [1] Bennoui 2022; _cites Wang 2017_ [doi](https://doi.org/10.1016/j.jnucmat.2017.08.016) | Table 2, p. 5, row 10; `ORC-DANVKKXKVT` |  |
| α-ErBi |  | -80.274 kJ/mol-atom |  | DFT |  |  | [1] Bennoui 2022; _cites Kirklin 2015_ [doi](https://doi.org/10.1038/npjcompumats.2015.10) | Table 2, p. 5, row 6; `ORC-VLAU4J4473` |  |
| α-ErBi |  | -80.005 kJ/mol-atom | 0 | DFT |  |  | [1] Bennoui 2022 | Table 2, p. 5, row 4; `ORC-KM5XSP6HBL` |  |
| α-ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -79.131 kJ/mol-atom |  | model | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [1] Bennoui 2022 | Table 2, p. 5, row 5; `ORC-F6ESKCLDLJ` |  |
| α-ErBi |  | -77.576 kJ/mol-atom |  | DFT |  |  | [1] Bennoui 2022; _cites Jain 2013_ [doi](https://doi.org/10.1063/1.4812323) | Table 2, p. 5, row 7; `ORC-SZ4KGQXW6V` |  |
| α-ErBi | [BiEr](https://data.orchid-project.org/compounds/BiEr.html) | -75 kJ/mol-atom |  | model | -77.511 (mp-aaaabikb) | -80.472 (oqmd-1926318) | [1] Bennoui 2022; _cites Colinet 1984_ [doi](https://doi.org/10.1016/0022-5088%2884%2990320-5) | Table 2, p. 5, row 15; `ORC-A4NVSZTRLB` |  |

## Other properties

### Phase transition (3)

Table: Phase transition, Bi–Er system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 2053 K | 2053 | ErBi | experimental | [1] Bennoui 2022; _cites Abdusalyamova 2002_ [doi](https://doi.org/10.1515/zna-2002-9-1016) | p. 2; `ORC-ABYCNRR63N` | “The ErBi compound has a solid-state phase transformation at 2053 K, \[18\] but the crystallographic structure of this phase at high temperature has not been determined.” |
| Phase transition | 2080 K | 2080 | congruent melting | experimental | [1] Bennoui 2022 | p. 2; `ORC-DT7LP5BZL4` | “The highest melting phase in the system belongs to ErBi, which melts congruently at 2080 K.” |
| Phase transition | 2080 K | 2080 | congruent transformation | experimental | [3] Wang 2017 | p. 3; `ORC-2ZA7AOJA4V` | “ErBi congruently melts at the temperature of 2080 K.” |

### Formation (2)

Table: Formation, Bi–Er system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Entropy of formation; _printed: ΔSf_ | -2.54 J/mol (basis unstated)/K |  | Er5Bi3; _alloy: Er 0.625_ | model | [3] Wang 2017 | Table 10, p. 7, row 12; `ORC-S2ZZSUWKJO` |  |
| Entropy of formation; _printed: ΔSf_ | -1.93 J/mol (basis unstated)/K |  | ErBi; _alloy: Er 0.5_ | model | [3] Wang 2017 | Table 10, p. 7, row 11; `ORC-GCWN3OAVTA` |  |

### Activity / EMF / Gibbs energy (12)

Table: Activity / EMF / Gibbs energy, Bi–Er system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Activity coefficient; _printed: Log(activity coefficient)_ | -8.47 unknown | 873 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017 | Table 12, p. 9, row 3; `ORC-JUDBIEPS5Z.458ca9` |  |
| Activity coefficient; _printed: Log(activity coefficient)_ | -9.01 unknown | 873 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017 | Table 12, p. 9, row 3; `ORC-JUDBIEPS5Z.4baa3a` |  |
| Activity coefficient; _printed: Log(activity coefficient)_ | -9.21 unknown | 873 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017; _cites Hajimu 2001_ | Table 12, p. 9, row 1; `ORC-V7HQZ55TV7.223b3a` |  |
| Activity coefficient; _printed: Log(activity coefficient)_ | -9.14 unknown | 873 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017; _cites Gschneidner 1989_ [doi](https://doi.org/10.1007/bf02882364) | Table 12, p. 9, row 2; `ORC-VCN4FMLCEO.17dbaa` |  |
| Activity coefficient; _printed: Log(activity coefficient)_ | -8.02 unknown | 923 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017 | Table 12, p. 9, row 6; `ORC-DDP5XB3W4O.3f38c7` |  |
| Activity coefficient; _printed: Log(activity coefficient)_ | -8.52 unknown | 923 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017 | Table 12, p. 9, row 6; `ORC-DDP5XB3W4O.52c48d` |  |
| Activity coefficient; _printed: Log(activity coefficient)_ | -8.62 unknown | 923 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017; _cites Hajimu 2001_ | Table 12, p. 9, row 4; `ORC-MQGLWPDFXC.7e48db` |  |
| Activity coefficient; _printed: Log(activity coefficient)_ | -8.73 unknown | 923 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017; _cites Gschneidner 1989_ [doi](https://doi.org/10.1007/bf02882364) | Table 12, p. 9, row 5; `ORC-RFJRJLU5FE.fabe2a` |  |
| Activity coefficient; _printed: Log(activity coefficient)_ | -8.09 unknown | 973 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017 | Table 12, p. 9, row 9; `ORC-6J2DTN6ZTV.20bfb6` |  |
| Activity coefficient; _printed: Log(activity coefficient)_ | -7.6 unknown | 973 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017 | Table 12, p. 9, row 9; `ORC-6J2DTN6ZTV.5cacda` |  |
| Activity coefficient; _printed: Log(activity coefficient)_ | -8.37 unknown | 973 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017; _cites Gschneidner 1989_ [doi](https://doi.org/10.1007/bf02882364) | Table 12, p. 9, row 8; `ORC-VO6462E7PY.0874a6` |  |
| Activity coefficient; _printed: Log(activity coefficient)_ | -8.08 unknown | 973 | liquid Bi; _alloy: Er 0_ | model | [3] Wang 2017; _cites Hajimu 2001_ | Table 12, p. 9, row 7; `ORC-YFPCZ7JDGD.8219b4` |  |

### Crystal structure (29)

Table: Crystal structure, Bi–Er system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a | 8.171 Å | 0 | Bi3Er5; _alloy: Er 0.625_ | DFT | [2] Wang 2013 | Table 3, p. 3, row 7; `ORC-WH5DR533IS.c72fc3` |  |
| Lattice a | 6.2644 Å | 0 | BiEr; _alloy: Er 0.5_ | DFT | [2] Wang 2013 | Table 3, p. 3, row 9; `ORC-LHVWQYCB54` |  |
| Lattice a | 8.19 Å | 0 | Er5Bi3; _alloy: Er 0.625_ | DFT | [1] Bennoui 2022 | Table 1, p. 3, row 10; `ORC-3PPPV5W4NA.9c76da` |  |
| Lattice a | 8.171 Å | 0 | Er5Bi3; _alloy: Er 0.625_ | DFT | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 1, p. 3, row 9; `ORC-RTSGCMMUX7.96cc20` |  |
| Lattice a | 6.279 Å | 0 | ErBi(α); _alloy: Er 0.5_ | DFT | [1] Bennoui 2022 | Table 1, p. 3, row 7; `ORC-LYWJVKCCWF.c9d03b` |  |
| Lattice a | 6.264 Å | 0 | ErBi(α); _alloy: Er 0.5_ | DFT | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 1, p. 3, row 6; `ORC-SMEEVG4MQS.35466c` |  |
| Lattice a | 4.18 Å | 0 | ErBi2; _alloy: Er 0.333333_ | DFT | [1] Bennoui 2022 | Table 1, p. 3, row 4; `ORC-LTVD3KY6MS.a54ff9` |  |
| Lattice a | 8.09 Å | 298.15 | Bi3Er5; _alloy: Er 0.625_ | experimental | [2] Wang 2013; _cites Drzyzga 2001_ [doi](https://doi.org/10.1016/s0925-8388%2801%2901009-x) | Table 3, p. 3, row 8; `ORC-YWHTENP5F7.381c38` |  |
| Lattice a | 6.2023 Å | 298.15 | BiEr; _alloy: Er 0.5_ | experimental | [2] Wang 2013; _cites Yoshihara 1975_ [doi](https://doi.org/10.1016/0022-5088%2875%2990038-7) | Table 3, p. 3, row 10; `ORC-YTTNXTTO5N` |  |
| Lattice a | 8.09 Å | 298.15 | Er5Bi3; _alloy: Er 0.625_ | experimental | [1] Bennoui 2022; _cites Drzyzga 2001_ [doi](https://doi.org/10.1016/s0925-8388%2801%2901009-x) | Table 1, p. 3, row 8; `ORC-PANVSGDAFG.ed0171` |  |
| Lattice a | 6.2023 Å | 298.15 | ErBi(α); _alloy: Er 0.5_ | experimental | [1] Bennoui 2022; _cites Yoshihara 1975_ [doi](https://doi.org/10.1016/0022-5088%2875%2990038-7) | Table 1, p. 3, row 5; `ORC-SWNMY5ZS4D.ef1624` |  |
| Lattice b | 9.446 Å | 0 | Bi3Er5; _alloy: Er 0.625_ | DFT | [2] Wang 2013 | Table 3, p. 3, row 7; `ORC-WH5DR533IS.959846` |  |
| Lattice b | 9.457 Å | 0 | Er5Bi3; _alloy: Er 0.625_ | DFT | [1] Bennoui 2022 | Table 1, p. 3, row 10; `ORC-3PPPV5W4NA.e35149` |  |
| Lattice b | 9.446 Å | 0 | Er5Bi3; _alloy: Er 0.625_ | DFT | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 1, p. 3, row 9; `ORC-RTSGCMMUX7.d5959e` |  |
| Lattice b | 6.279 Å | 0 | ErBi(α); _alloy: Er 0.5_ | DFT | [1] Bennoui 2022 | Table 1, p. 3, row 7; `ORC-LYWJVKCCWF.d34c36` |  |
| Lattice b | 6.264 Å | 0 | ErBi(α); _alloy: Er 0.5_ | DFT | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 1, p. 3, row 6; `ORC-SMEEVG4MQS.47d258` |  |
| Lattice b | 7.608 Å | 0 | ErBi2; _alloy: Er 0.333333_ | DFT | [1] Bennoui 2022 | Table 1, p. 3, row 4; `ORC-LTVD3KY6MS.d1bf71` |  |
| Lattice b | 9.349 Å | 298.15 | Bi3Er5; _alloy: Er 0.625_ | experimental | [2] Wang 2013; _cites Drzyzga 2001_ [doi](https://doi.org/10.1016/s0925-8388%2801%2901009-x) | Table 3, p. 3, row 8; `ORC-YWHTENP5F7.b411b9` |  |
| Lattice b | 9.349 Å | 298.15 | Er5Bi3; _alloy: Er 0.625_ | experimental | [1] Bennoui 2022; _cites Drzyzga 2001_ [doi](https://doi.org/10.1016/s0925-8388%2801%2901009-x) | Table 1, p. 3, row 8; `ORC-PANVSGDAFG.987e89` |  |
| Lattice b | 6.2023 Å | 298.15 | ErBi(α); _alloy: Er 0.5_ | experimental | [1] Bennoui 2022; _cites Yoshihara 1975_ [doi](https://doi.org/10.1016/0022-5088%2875%2990038-7) | Table 1, p. 3, row 5; `ORC-SWNMY5ZS4D.954e8c` |  |
| Lattice c | 11.889 Å | 0 | Bi3Er5; _alloy: Er 0.625_ | DFT | [2] Wang 2013 | Table 3, p. 3, row 7; `ORC-WH5DR533IS.eb2c2c` |  |
| Lattice c | 11.919 Å | 0 | Er5Bi3; _alloy: Er 0.625_ | DFT | [1] Bennoui 2022 | Table 1, p. 3, row 10; `ORC-3PPPV5W4NA.fbbbb1` |  |
| Lattice c | 11.889 Å | 0 | Er5Bi3; _alloy: Er 0.625_ | DFT | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 1, p. 3, row 9; `ORC-RTSGCMMUX7.e8a51f` |  |
| Lattice c | 6.279 Å | 0 | ErBi(α); _alloy: Er 0.5_ | DFT | [1] Bennoui 2022 | Table 1, p. 3, row 7; `ORC-LYWJVKCCWF.1b57fb` |  |
| Lattice c | 6.264 Å | 0 | ErBi(α); _alloy: Er 0.5_ | DFT | [1] Bennoui 2022; _cites Wang 2013_ [doi](https://doi.org/10.1016/j.tca.2013.05.024) | Table 1, p. 3, row 6; `ORC-SMEEVG4MQS.684c09` |  |
| Lattice c | 11.495 Å | 0 | ErBi2; _alloy: Er 0.333333_ | DFT | [1] Bennoui 2022 | Table 1, p. 3, row 4; `ORC-LTVD3KY6MS.3eae40` |  |
| Lattice c | 11.806 Å | 298.15 | Bi3Er5; _alloy: Er 0.625_ | experimental | [2] Wang 2013; _cites Drzyzga 2001_ [doi](https://doi.org/10.1016/s0925-8388%2801%2901009-x) | Table 3, p. 3, row 8; `ORC-YWHTENP5F7.6259e8` |  |
| Lattice c | 11.806 Å | 298.15 | Er5Bi3; _alloy: Er 0.625_ | experimental | [1] Bennoui 2022; _cites Drzyzga 2001_ [doi](https://doi.org/10.1016/s0925-8388%2801%2901009-x) | Table 1, p. 3, row 8; `ORC-PANVSGDAFG.eea4a4` |  |
| Lattice c | 6.202 Å | 298.15 | ErBi(α); _alloy: Er 0.5_ | experimental | [1] Bennoui 2022; _cites Yoshihara 1975_ [doi](https://doi.org/10.1016/0022-5088%2875%2990038-7) | Table 1, p. 3, row 5; `ORC-SWNMY5ZS4D.2b0b14` |  |

## Sources

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

1. S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, Thermodynamic Study of Er-Bi and Er-Te Systems by Combination of First-Principles Calculations and the CALPHAD Method, J. Phase Equilib. Diffus. 43, 126-138 (2022). [doi:10.1007/s11669-022-00947-8](https://doi.org/10.1007/s11669-022-00947-8)
2. Jinsan Wang, Changrong Li, Cuiping Guo, Zhenmin Du, Bo Wu, Thermodynamic assessment of the Bi–Er and the Bi–Dy systems, Thermochimica Acta 566, 44-49 (2013). [doi:10.1016/j.tca.2013.05.024](https://doi.org/10.1016/j.tca.2013.05.024)
3. Yafei Wang, Wentao Zhou, Shaoqiang Guo, Jinsuo Zhang, Thermodynamic properties of fission products (Pr, Ce, Er) in liquid bismuth by thermodynamic assessment, Journal of Nuclear Materials 495, 181-191 (2017). [doi:10.1016/j.jnucmat.2017.08.016](https://doi.org/10.1016/j.jnucmat.2017.08.016)

## 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/).