# Bi–Tm system

> Bi–Tm system: 50 accepted literature values (invariant reaction 28, crystal structure 12, formation 8, phase transition 2) and 2 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

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

50 accepted literature values from 2 paper(s) (experimental 16, model 24, DFT 2, unspecified 8); 2 calculated phase diagram(s). 6 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-TM.json) · [CSV](https://data.orchid-project.org/systems/BI-TM.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#BI-TM) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#BI-TM/BiTm-10Wan.json) · [phases (7)](https://data.orchid-project.org/phases/pages/BI-TM.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/BI-TM.html) · [Markdown](https://data.orchid-project.org/systems/BI-TM.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 16 |
| model | 24 |
| DFT | 2 |
| unspecified | 8 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 28 |
| phase transition | 2 |
| formation | 8 |
| crystal structure | 12 |

## 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 |
|---|---|---|---|
| BiTm-10Wan.tdb | C.P. Wang, H.L. Zhang, A.T. Tang, F.S. Pan, X.J. Liu, J. Alloys Compd., 502, 43-48(2010). [doi:10.1016/j.jallcom.2010.03.042](https://doi.org/10.1016/j.jallcom.2010.03.042) | `0fe52d02cf6d5c2ad74ce147909174a5e41e02a6a22627cc3b640195c1103d56` | [viewer](https://orchid-project.org/phase-diagrams/#BI-TM/BiTm-10Wan.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/BiTm-10Wan.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/BiTm-10Wan.json) |
| BiTm-15Dja.tdb | Y. Djaballah, A. Said Amer, S. Ugur, G. Ugur, A. Hidoussi, A. Belgacem-Bouzida, Calphad, 48, 72-78(2015). [doi:10.1016/j.calphad.2014.11.002](https://doi.org/10.1016/j.calphad.2014.11.002) | `eece954098bcef12dede70e60c852e8135c3733a46598c8d9231291def4644f1` | [viewer](https://orchid-project.org/phase-diagrams/#BI-TM/BiTm-15Dja.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/BiTm-15Dja.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/BiTm-15Dja.json) |

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

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| BiTm-10Wan.tdb | 1687.37 | BITM_B1 (x(Tm) 0.5) + BI3TM5 (x(Tm) 0.625) + LIQUID (x(Tm) 0.69504) |
| BiTm-10Wan.tdb | 1687.36 | BITM_B1 (x(Tm) 0.5) + BI3TM5 (x(Tm) 0.625) + LIQUID (x(Tm) 0.69522) |
| BiTm-10Wan.tdb | 1687.36 | BITM_B1 (x(Tm) 0.5) + BI3TM5 (x(Tm) 0.625) + LIQUID (x(Tm) 0.69524) |
| BiTm-10Wan.tdb | 1409.88 | BI3TM5 (x(Tm) 0.625) + LIQUID (x(Tm) 0.82579) + HCP_A3 (x(Tm) 0.98985) |
| BiTm-10Wan.tdb | 1409.88 | BI3TM5 (x(Tm) 0.625) + LIQUID (x(Tm) 0.82583) + HCP_A3 (x(Tm) 0.98985) |
| BiTm-10Wan.tdb | 538.89 | RHOMBOHEDRAL_A7 (x(Tm) 0) + LIQUID (x(Tm) 0.02086) + BITM_B1 (x(Tm) 0.5) |
| BiTm-10Wan.tdb | 538.89 | RHOMBOHEDRAL_A7 (x(Tm) 0) + LIQUID (x(Tm) 0.02074) + BITM_B1 (x(Tm) 0.5) |
| BiTm-15Dja.tdb | 1686.53 | BITM_B1 (x(Tm) 0.5) + BI3TM5 (x(Tm) 0.625) + LIQUID (x(Tm) 0.70462) |
| BiTm-15Dja.tdb | 1686.53 | BITM_B1 (x(Tm) 0.5) + BI3TM5 (x(Tm) 0.625) + LIQUID (x(Tm) 0.70471) |
| BiTm-15Dja.tdb | 1686.53 | BITM_B1 (x(Tm) 0.5) + BI3TM5 (x(Tm) 0.625) + LIQUID (x(Tm) 0.70458) |
| BiTm-15Dja.tdb | 1403.14 | BI3TM5 (x(Tm) 0.625) + LIQUID (x(Tm) 0.81079) + HCP_A3 (x(Tm) 0.99069) |
| BiTm-15Dja.tdb | 535.12 | RHOMBOHEDRAL_A7 (x(Tm) 0) + LIQUID (x(Tm) 0.02323) + BITM_B1 (x(Tm) 0.5) |
| BiTm-15Dja.tdb | 535.12 | RHOMBOHEDRAL_A7 (x(Tm) 0) + LIQUID (x(Tm) 0.02301) + BITM_B1 (x(Tm) 0.5) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/BI/BI-TM.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/BI/BI-TM.json) · [CALPHAD hull BiTm-10Wan](https://data.orchid-project.org/hulls/calphad-sgte/BI/BI-TM--BiTm-10Wan.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Bi–Tm system (28)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 2053.15 | congruent melting: L \<-> BiTm | L: Tm 0.5; BiTm: Tm 0.5 | experimental | [1] Wang 2010; _cites Abdusalyamova 1996_ [doi](https://doi.org/10.1016/0925-8388%2896%2902314-6) | Table 4, p. 4, row 11; `ORC-PVUZ7YMLJU` |  |
| 2053 | congruent melting: L \<-> BiTm | L: Tm 0.5; BiTm: Tm 0.5 | experimental | [2] Djaballah 2015; _cites Abdusalyamova 1996_ [doi](https://doi.org/10.1016/0925-8388%2896%2902314-6) | Table 5, p. 6, row 5; `ORC-BWPTGBWKRD` |  |
| 2020.05 | congruent melting: L \<-> BiTm | L: Tm 0.5; BiTm: Tm 0.5 | model | [2] Djaballah 2015 | Table 5, p. 6, row 8; `ORC-PVVQZYFESR` |  |
| 2013.15 | congruent melting: L \<-> BiTm | L: Tm 0.5; BiTm: Tm 0.5 | model | [1] Wang 2010 | Table 4, p. 4, row 12; `ORC-LTZX6FTUHN` |  |
| 2013 | congruent melting: L \<-> BiTm | L: Tm 0.5; BiTm: Tm 0.5 | model | [2] Djaballah 2015; _cites Wang 2010_ [doi](https://doi.org/10.1016/j.jallcom.2010.03.042) | Table 5, p. 6, row 7; `ORC-Q7IC2Z3W5I` |  |
| 2010.15 | congruent melting: L \<-> BiTm | L: Tm 0.5; BiTm: Tm 0.5 | unspecified | [1] Wang 2010; _cites Abulkhaev 2003_ [doi](https://doi.org/10.1023/a:1021887102509) | Table 4, p. 4, row 10; `ORC-E4KKYMHRRX` |  |
| 2010 | congruent melting: L \<-> BiTm | L: Tm 0.5; BiTm: Tm 0.5 | unspecified | [2] Djaballah 2015; _cites Abulkhaev 2003_ [doi](https://doi.org/10.1023/a:1021887102509) | Table 5, p. 6, row 6; `ORC-VSGOOZBZD6` |  |
| 1783.15 | peritectic: L + BiTm \<-> Bi3Tm5 | BiTm: Tm 0.5; Bi3Tm5: Tm 0.625 | experimental | [1] Wang 2010; _cites Abdusalyamova 1996_ [doi](https://doi.org/10.1016/0925-8388%2896%2902314-6) | Table 4, p. 4, row 8; `ORC-ATEU2ZIMY5` |  |
| 1783 | peritectic: L + BiTm \<-> Bi3Tm5 | BiTm: Tm 0.5; Bi3Tm5: Tm 0.625 | experimental | [2] Djaballah 2015; _cites Abdusalyamova 1996_ [doi](https://doi.org/10.1016/0925-8388%2896%2902314-6) | Table 5, p. 6, row 9; `ORC-5ML6DHVLJZ` |  |
| 1690.15 | peritectic: L + BiTm \<-> Bi3Tm5 | BiTm: Tm 0.5; Bi3Tm5: Tm 0.625 | unspecified | [1] Wang 2010; _cites Abulkhaev 2003_ [doi](https://doi.org/10.1023/a:1021887102509) | Table 4, p. 4, row 7; `ORC-3MHWW3XSY6` |  |
| 1690 | peritectic: L + BiTm \<-> Bi3Tm5 | BiTm: Tm 0.5; Bi3Tm5: Tm 0.625 | unspecified | [2] Djaballah 2015; _cites Abulkhaev 2003_ [doi](https://doi.org/10.1023/a:1021887102509) | Table 5, p. 6, row 10; `ORC-E3JUA4I3H6` |  |
| 1687.15 | peritectic: L + BiTm \<-> Bi3Tm5 | L: Tm 0.695; BiTm: Tm 0.5; Bi3Tm5: Tm 0.625 | model | [1] Wang 2010 | Table 4, p. 4, row 9; `ORC-VUWJBRGXCK` |  |
| 1687 | peritectic: L + BiTm \<-> Bi3Tm5 | L: Tm 0.695; BiTm: Tm 0.5; Bi3Tm5: Tm 0.625 | model | [2] Djaballah 2015; _cites Wang 2010_ [doi](https://doi.org/10.1016/j.jallcom.2010.03.042) | Table 5, p. 6, row 11; `ORC-SC4ULNQOE6` |  |
| 1686.5 | peritectic: L + BiTm \<-> Bi3Tm5 | L: Tm 0.704; BiTm: Tm 0.5; Bi3Tm5: Tm 0.625 | model | [2] Djaballah 2015 | Table 5, p. 6, row 12; `ORC-EC57UDK66G` |  |
| 1413.15 | eutectic: L \<-> (Tm) + Bi3Tm5 | L: Tm 0.81; (Tm): Tm 0.99; Bi3Tm5: Tm 0.625 | experimental | [1] Wang 2010; _cites Abdusalyamova 1996_ [doi](https://doi.org/10.1016/0925-8388%2896%2902314-6) | Table 4, p. 4, row 5; `ORC-AUVQKJ3QXK` |  |
| 1413 | eutectic: L \<-> Bi3Tm5 + (Tm) | L: Tm 0.81; Bi3Tm5: Tm 0.625; (Tm): Tm 0.99 | experimental | [2] Djaballah 2015; _cites Abdusalyamova 1996_ [doi](https://doi.org/10.1016/0925-8388%2896%2902314-6) | Table 5, p. 6, row 13; `ORC-GMQDTHBT7Z` |  |
| 1410.15 | eutectic: L \<-> (Tm) + Bi3Tm5 | L: Tm 0.825; (Tm): Tm 0.99; Bi3Tm5: Tm 0.625 | model | [1] Wang 2010 | Table 4, p. 4, row 6; `ORC-JOGQEG2SES` |  |
| 1410.15 | eutectic: L \<-> (Tm) + Bi3Tm5 | Bi3Tm5: Tm 0.625 | unspecified | [1] Wang 2010; _cites Abulkhaev 2003_ [doi](https://doi.org/10.1023/a:1021887102509) | Table 4, p. 4, row 4; `ORC-QNZDQPZ52N` |  |
| 1410 | eutectic: L \<-> Bi3Tm5 + (Tm) | L: Tm 0.825; Bi3Tm5: Tm 0.625; (Tm): Tm 0.99 | model | [2] Djaballah 2015; _cites Wang 2010_ [doi](https://doi.org/10.1016/j.jallcom.2010.03.042) | Table 5, p. 6, row 15; `ORC-KR5NOHKPAL` |  |
| 1410 | eutectic: L \<-> Bi3Tm5 + (Tm) | L: Tm 0.81; Bi3Tm5: Tm 0.625 | unspecified | [2] Djaballah 2015; _cites Abulkhaev 2003_ [doi](https://doi.org/10.1023/a:1021887102509) | Table 5, p. 6, row 14; `ORC-UTFVHCF5ZK` |  |
| 1403.1 | eutectic: L \<-> Bi3Tm5 + (Tm) | L: Tm 0.81; Bi3Tm5: Tm 0.625; (Tm): Tm 0.991 | model | [2] Djaballah 2015 | Table 5, p. 6, row 16; `ORC-VNRLORZFFU` |  |
| 541.15 | eutectic: L \<-> (Bi) + BiTm | (Bi): Tm 0; BiTm: Tm 0.5 | unspecified | [1] Wang 2010; _cites Abulkhaev 2003_ [doi](https://doi.org/10.1023/a:1021887102509) | Table 4, p. 4, row 1; `ORC-FV3MMSJFVS` |  |
| 541 | eutectic: L \<-> (Bi) + BiTm | (Bi): Tm 0; BiTm: Tm 0.5 | unspecified | [2] Djaballah 2015; _cites Abulkhaev 2003_ [doi](https://doi.org/10.1023/a:1021887102509) | Table 5, p. 6, row 2; `ORC-3QU3XRFQTT` |  |
| 539.15 | eutectic: L \<-> (Bi) + BiTm | (Bi): Tm 0; BiTm: Tm 0.5 | experimental | [1] Wang 2010; _cites Abdusalyamova 1996_ [doi](https://doi.org/10.1016/0925-8388%2896%2902314-6) | Table 4, p. 4, row 2; `ORC-4YQRZEPV5F` |  |
| 539.15 | eutectic: L \<-> (Bi) + BiTm | L: Tm 0.021; (Bi): Tm 0; BiTm: Tm 0.5 | model | [1] Wang 2010 | Table 4, p. 4, row 3; `ORC-5PC44KVWOZ` |  |
| 539 | eutectic: L \<-> (Bi) + BiTm | (Bi): Tm 0; BiTm: Tm 0.5 | experimental | [2] Djaballah 2015; _cites Abdusalyamova 1996_ [doi](https://doi.org/10.1016/0925-8388%2896%2902314-6) | Table 5, p. 6, row 1; `ORC-HRY3AMKGWZ` |  |
| 539 | eutectic: L \<-> (Bi) + BiTm | L: Tm 0.021; (Bi): Tm 0; BiTm: Tm 0.5 | model | [2] Djaballah 2015; _cites Wang 2010_ [doi](https://doi.org/10.1016/j.jallcom.2010.03.042) | Table 5, p. 6, row 3; `ORC-NGOTT5KUKN` |  |
| 535.1 | eutectic: L \<-> (Bi) + BiTm | L: Tm 0.023; (Bi): Tm 0; BiTm: Tm 0.5 | model | [2] Djaballah 2015 | Table 5, p. 6, row 4; `ORC-B76HB2HSNU` |  |

## 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–Tm system (8)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| Bi3Tm5 | [Bi3Tm5](https://data.orchid-project.org/compounds/Bi3Tm5.html) | -73.565 kJ/mol-atom |  | model | -59.592 (mp-aaacqtbi) | -60.919 (oqmd-28780) | [2] Djaballah 2015; _cites Wang 2010_ [doi](https://doi.org/10.1016/j.jallcom.2010.03.042) | Table 2, p. 4, row 21; `ORC-LZ2I2SFRUV.976166` |  |
| Bi3Tm5 | [Bi3Tm5](https://data.orchid-project.org/compounds/Bi3Tm5.html) | -68 kJ/mol-atom |  | model | -59.592 (mp-aaacqtbi) | -60.919 (oqmd-28780) | [2] Djaballah 2015; _cites Colinet 1984_ [doi](https://doi.org/10.1016/0022-5088%2884%2990320-5) | Table 2, p. 4, row 20; `ORC-VYC6GOQ53N.a6bc3f` |  |
| Bi3Tm5 | [Bi3Tm5](https://data.orchid-project.org/compounds/Bi3Tm5.html) | -60.85 kJ/mol-atom |  | model | -59.592 (mp-aaacqtbi) | -60.919 (oqmd-28780) | [2] Djaballah 2015 | Table 2, p. 4, row 23; `ORC-WXG4T37BSZ.2a1ed5` |  |
| Bi3Tm5 |  | -60.751 kJ/mol-atom | 0 | DFT |  |  | [2] Djaballah 2015 | Table 2, p. 4, row 22; `ORC-JAQJKXBURL.12c7d9` |  |
| BiTm | [BiTm](https://data.orchid-project.org/compounds/BiTm.html) | -99 kJ/mol-atom |  | model | -74.592 (mp-aaaabijq) | -77.416 (oqmd-1926383) | [2] Djaballah 2015; _cites Wang 2010_ [doi](https://doi.org/10.1016/j.jallcom.2010.03.042) | Table 2, p. 4, row 17; `ORC-IZ7VPOEHIU.228601` |  |
| BiTm | [BiTm](https://data.orchid-project.org/compounds/BiTm.html) | -76.796 kJ/mol-atom |  | model | -74.592 (mp-aaaabijq) | -77.416 (oqmd-1926383) | [2] Djaballah 2015 | Table 2, p. 4, row 19; `ORC-SF7F2BBGQK.b49313` |  |
| BiTm |  | -76.501 kJ/mol-atom | 0 | DFT |  |  | [2] Djaballah 2015 | Table 2, p. 4, row 18; `ORC-5FQMPSFZ6R.18de40` |  |
| BiTm | [BiTm](https://data.orchid-project.org/compounds/BiTm.html) | -73 kJ/mol-atom |  | model | -74.592 (mp-aaaabijq) | -77.416 (oqmd-1926383) | [2] Djaballah 2015; _cites Colinet 1984_ [doi](https://doi.org/10.1016/0022-5088%2884%2990320-5) | Table 2, p. 4, row 16; `ORC-4UPGTA4QXE.21fb95` |  |

## Other properties

### Phase transition (2)

Table: Phase transition, Bi–Tm system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 2010.15 K | 2010.15 | BiTm | experimental | [1] Wang 2010; _cites Abulkhaev 2003_ [doi](https://doi.org/10.1023/a:1021887102509) | p. 3; `ORC-PFYKS27RQF.668972` | “However, more recently Abulkhaev \[25\] have studied the Bi-Tm phase diagram by means of differential thermal analysis, X-ray diffraction and microstructural analysis, and reported there are two eutectic reactions of the L ↔ (Bi) + BiTm at 268 ± 5 ◦ C and L ↔ (Tm) + Bi3 Tm5 at 1137 ± 10 ◦ C, and a peritectic reaction of the L + BiTm ↔ Bi3 Tm5 at 1417 ± 15 ◦ C, and the compound BiTm melts at 1737 ±…” |
| Phase transition | 2053.15 K | 2053.15 | BiTm | experimental | [1] Wang 2010; _cites Abdusalyamova 1996_ [doi](https://doi.org/10.1016/0925-8388%2896%2902314-6) | p. 3; `ORC-D2IUEF2VGS.6cf894` | “In this system, there are two eutectic reactions of the L ↔ (Bi) + BiTm at 266 ◦ C and L ↔ (Tm) + Bi3 Tm5 at 1140 ◦ C, and a peritectic reaction of the L + BiTm ↔ Bi3 Tm5 at 1510 ◦ C, and the compound BiTm melts at 1780 ◦ C, and the bismuth solubility in thulium is about 1 at.%.” |

### Crystal structure (12)

Table: Crystal structure, Bi–Tm system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a | 8.163 Å |  | Bi3Tm5; _Bi3Tm5: Tm 0.625_ | model | [2] Djaballah 2015 | Table 1, p. 2, row 21; `ORC-DA7EZCR4PU.78dc83` |  |
| Lattice a | 6.27 Å |  | BiTm; _BiTm: Tm 0.5_ | model | [2] Djaballah 2015 | Table 1, p. 2, row 19; `ORC-2UF6WON3NW.941605` |  |
| Lattice a | 8.064 Å | 298.15 | Bi3Tm5; _Bi3Tm5: Tm 0.625_ | experimental | [2] Djaballah 2015; _cites Yoshihara 1975_ [doi](https://doi.org/10.1016/0022-5088%2875%2990038-7) | Table 1, p. 2, row 20; `ORC-EAOIVODKCR.60c5bb` |  |
| Lattice a | 6.188 Å | 298.15 | BiTm; _BiTm: Tm 0.5_ | experimental | [2] Djaballah 2015; _cites Yoshihara 1975_ [doi](https://doi.org/10.1016/0022-5088%2875%2990038-7) | Table 1, p. 2, row 18; `ORC-BVV6HX6QIT.f78444` |  |
| Lattice b | 9.447 Å |  | Bi3Tm5; _Bi3Tm5: Tm 0.625_ | model | [2] Djaballah 2015 | Table 1, p. 2, row 21; `ORC-DA7EZCR4PU.f1e306` |  |
| Lattice b | 6.27 Å |  | BiTm; _BiTm: Tm 0.5_ | model | [2] Djaballah 2015 | Table 1, p. 2, row 19; `ORC-2UF6WON3NW.5427b3` |  |
| Lattice b | 9.305 Å | 298.15 | Bi3Tm5; _Bi3Tm5: Tm 0.625_ | experimental | [2] Djaballah 2015; _cites Yoshihara 1975_ [doi](https://doi.org/10.1016/0022-5088%2875%2990038-7) | Table 1, p. 2, row 20; `ORC-EAOIVODKCR.54c9c9` |  |
| Lattice b | 6.188 Å | 298.15 | BiTm; _BiTm: Tm 0.5_ | experimental | [2] Djaballah 2015; _cites Yoshihara 1975_ [doi](https://doi.org/10.1016/0022-5088%2875%2990038-7) | Table 1, p. 2, row 18; `ORC-BVV6HX6QIT.8e973f` |  |
| Lattice c | 11.868 Å |  | Bi3Tm5; _Bi3Tm5: Tm 0.625_ | model | [2] Djaballah 2015 | Table 1, p. 2, row 21; `ORC-DA7EZCR4PU.41f2fa` |  |
| Lattice c | 6.27 Å |  | BiTm; _BiTm: Tm 0.5_ | model | [2] Djaballah 2015 | Table 1, p. 2, row 19; `ORC-2UF6WON3NW.9a14ec` |  |
| Lattice c | 11.758 Å | 298.15 | Bi3Tm5; _Bi3Tm5: Tm 0.625_ | experimental | [2] Djaballah 2015; _cites Yoshihara 1975_ [doi](https://doi.org/10.1016/0022-5088%2875%2990038-7) | Table 1, p. 2, row 20; `ORC-EAOIVODKCR.ece102` |  |
| Lattice c | 6.188 Å | 298.15 | BiTm; _BiTm: Tm 0.5_ | experimental | [2] Djaballah 2015; _cites Yoshihara 1975_ [doi](https://doi.org/10.1016/0022-5088%2875%2990038-7) | Table 1, p. 2, row 18; `ORC-BVV6HX6QIT.575da2` |  |

## Sources

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

1. C.P. Wang, H.L. Zhang, A.T. Tang, F.S. Pan, X.J. Liu, Thermodynamic assessments of the Bi–Nd and Bi–Tm systems, Journal of Alloys and Compounds 502, 43-48 (2010). [doi:10.1016/j.jallcom.2010.03.042](https://doi.org/10.1016/j.jallcom.2010.03.042)
2. Y. Djaballah, A. Said Amer, Ş. Uğur, G. Uğur, A. Hidoussi, A. Belgacem-Bouzida, Thermodynamic description of the Bi–Cs and Bi–Tm system supported by first-principles calculations, Calphad 48, 72-78 (2015). [doi:10.1016/j.calphad.2014.11.002](https://doi.org/10.1016/j.calphad.2014.11.002)

## 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/).