# Cu–Sb system

> Cu–Sb system: 55 accepted literature values (invariant reaction 22, formation 19, crystal structure 12, phase transition 2) and 3 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/CU-SB.html · Markdown: https://data.orchid-project.org/systems/CU-SB.md

55 accepted literature values from 3 paper(s) (experimental 33, model 22); 3 calculated phase diagram(s). 2 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/CU-SB.json) · [CSV](https://data.orchid-project.org/systems/CU-SB.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CU-SB) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#CU-SB/CuSb-00Liu-LB.json) · [phases (11)](https://data.orchid-project.org/phases/pages/CU-SB.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CU-SB.html) · [Markdown](https://data.orchid-project.org/systems/CU-SB.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 33 |
| model | 22 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 22 |
| phase transition | 2 |
| formation | 19 |
| 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 |
|---|---|---|---|
| CuSb-00Liu-LB.tdb | X.J. Liu, C.P. Wang, I. Ohnuma, R. Kainuma, K. Ishida, J. Phase Equilib., 21, 432-42(2000). [doi:10.1361/105497100770339608](https://doi.org/10.1361/105497100770339608) | `13e84e190226e22dc5930e637d1040222d29881dc5bfd446249534249936f846` | [viewer](https://orchid-project.org/phase-diagrams/#CU-SB/CuSb-00Liu-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CuSb-00Liu-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CuSb-00Liu-LB.json) |
| CuSb-09Gie.tdb | W. Gierlotka, D. Jendrzejczyk-Handzlik, J. Alloys Compd., 484, 172-76(2009). [doi:10.1016/j.jallcom.2009.05.056](https://doi.org/10.1016/j.jallcom.2009.05.056) | `49927e30622bd5246d42dfd023f12df44307e65f94dbfa63ae3d5af2801bed1d` | [viewer](https://orchid-project.org/phase-diagrams/#CU-SB/CuSb-09Gie.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CuSb-09Gie.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CuSb-09Gie.json) |
| CuSb-23Liu.tdb | R. Liu, J. Wang, D. Cui, J. Phase Equilib. Diffus, 44, 687-703(2023). [doi:10.1007/s11669-023-01074-8](https://doi.org/10.1007/s11669-023-01074-8) | `8157c1beeaa730d4347fbf592edc9124f69cbfee8a8526044f798873f6461f62` | [viewer](https://orchid-project.org/phase-diagrams/#CU-SB/CuSb-23Liu.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CuSb-23Liu.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CuSb-23Liu.json) |

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

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| CuSb-00Liu-LB.tdb | 920.25 | FCC_A1 (x(Sb) 0.059) + LIQUID (x(Sb) 0.18326) + BCC_A2 (x(Sb) 0.20425) |
| CuSb-00Liu-LB.tdb | 858.09 | BCC_A2 (x(Sb) 0.31329) + CU2SB_C38 (x(Sb) 0.33) + LIQUID (x(Sb) 0.44394) |
| CuSb-00Liu-LB.tdb | 799 | CU2SB_C38 (x(Sb) 0.33) + LIQUID (x(Sb) 0.6341) + RHOMBOHEDRAL_A7 (x(Sb) 1) |
| CuSb-00Liu-LB.tdb | 799 | CU2SB_C38 (x(Sb) 0.33) + LIQUID (x(Sb) 0.63424) + RHOMBOHEDRAL_A7 (x(Sb) 1) |
| CuSb-00Liu-LB.tdb | 761.35 | FCC_A1 (x(Sb) 0.04546) + CU17SB3_A3 (x(Sb) 0.15) + BCC_A2 (x(Sb) 0.21743) |
| CuSb-00Liu-LB.tdb | 761.35 | FCC_A1 (x(Sb) 0.04548) + CU17SB3_A3 (x(Sb) 0.15) + BCC_A2 (x(Sb) 0.21742) |
| CuSb-00Liu-LB.tdb | 737.85 | CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) + BCC_A2 (x(Sb) 0.22439) |
| CuSb-00Liu-LB.tdb | 737.85 | CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) + BCC_A2 (x(Sb) 0.2244) |
| CuSb-00Liu-LB.tdb | 737.85 | CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) + BCC_A2 (x(Sb) 0.22418) |
| CuSb-00Liu-LB.tdb | 707.55 | BCC_A2 (x(Sb) 0.24852) + CU3SB_D0A (x(Sb) 0.25) + CU2SB_C38 (x(Sb) 0.33) |
| CuSb-00Liu-LB.tdb | 707.55 | BCC_A2 (x(Sb) 0.24856) + CU3SB_D0A (x(Sb) 0.25) + CU2SB_C38 (x(Sb) 0.33) |
| CuSb-00Liu-LB.tdb | 707.36 | CU4SB (x(Sb) 0.2) + BCC_A2 (x(Sb) 0.24679) + CU3SB_D0A (x(Sb) 0.25) |
| CuSb-00Liu-LB.tdb | 673.52 | FCC_A1 (x(Sb) 0.02375) + CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) |
| CuSb-00Liu-LB.tdb | 673.52 | FCC_A1 (x(Sb) 0.0237) + CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) |
| CuSb-00Liu-LB.tdb | 673.52 | FCC_A1 (x(Sb) 0.02374) + CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) |
| CuSb-00Liu-LB.tdb | 662.16 | CU4SB (x(Sb) 0.2) + CU10SB3 (x(Sb) 0.23) + CU3SB_D0A (x(Sb) 0.25) |
| CuSb-00Liu-LB.tdb | 632.38 | CU10SB3 (x(Sb) 0.23) + CU3SB_D0A (x(Sb) 0.25) + CU2SB_C38 (x(Sb) 0.33) |
| CuSb-00Liu-LB.tdb | 533.3 | CU4SB (x(Sb) 0.2) + CU10SB3 (x(Sb) 0.23) + CU2SB_C38 (x(Sb) 0.33) |
| CuSb-09Gie.tdb | 946.29 | CU3SB_D03#2 (x(Sb) 0.24226) + LIQUID (x(Sb) 0.24981) + CU3SB_D03 (x(Sb) 0.25782) |
| CuSb-09Gie.tdb | 925.66 | FCC_A1 (x(Sb) 0.05689) + LIQUID (x(Sb) 0.19396) + CU3SB_D03 (x(Sb) 0.2066) |
| CuSb-09Gie.tdb | 855.69 | CU3SB_D03 (x(Sb) 0.3332) + CU2SB_C38 (x(Sb) 0.33333) + LIQUID (x(Sb) 0.41788) |
| CuSb-09Gie.tdb | 798.72 | CU2SB_C38 (x(Sb) 0.33333) + LIQUID (x(Sb) 0.62682) + RHOMBOHEDRAL_A7 (x(Sb) 1) |
| CuSb-09Gie.tdb | 798.72 | CU2SB_C38 (x(Sb) 0.33333) + LIQUID (x(Sb) 0.62739) + RHOMBOHEDRAL_A7 (x(Sb) 1) |
| CuSb-09Gie.tdb | 752.02 | FCC_A1 (x(Sb) 0.06047) + CU17SB3_A3 (x(Sb) 0.15) + CU3SB_D03 (x(Sb) 0.22387) |
| CuSb-09Gie.tdb | 752.02 | FCC_A1 (x(Sb) 0.06047) + CU17SB3_A3 (x(Sb) 0.15) + CU3SB_D03 (x(Sb) 0.22387) |
| CuSb-09Gie.tdb | 751.13 | CU3SB_D03 (x(Sb) 0.24546) + CU3SB_D03#2 (x(Sb) 0.25457) + CU2SB_C38 (x(Sb) 0.33333) |
| CuSb-09Gie.tdb | 724.98 | CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.20003) + CU3SB_D03 (x(Sb) 0.23205) |
| CuSb-09Gie.tdb | 724.97 | CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.20003) + CU3SB_D03 (x(Sb) 0.23222) |
| CuSb-09Gie.tdb | 724.97 | CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.20003) + CU3SB_D03 (x(Sb) 0.23222) |
| CuSb-09Gie.tdb | 716.54 | CU3SB_D03 (x(Sb) 0.24257) + CU3SB_D0A (x(Sb) 0.25) + CU2SB_C38 (x(Sb) 0.33333) |
| CuSb-09Gie.tdb | 716.54 | CU3SB_D03 (x(Sb) 0.24257) + CU3SB_D0A (x(Sb) 0.25) + CU2SB_C38 (x(Sb) 0.33333) |
| CuSb-09Gie.tdb | 716.54 | CU3SB_D03 (x(Sb) 0.24266) + CU3SB_D0A (x(Sb) 0.25) + CU2SB_C38 (x(Sb) 0.33333) |
| CuSb-09Gie.tdb | 715.39 | CU4SB (x(Sb) 0.20005) + CU10SB3 (x(Sb) 0.23077) + CU3SB_D03 (x(Sb) 0.23892) |
| CuSb-09Gie.tdb | 714.9 | CU10SB3 (x(Sb) 0.23077) + CU3SB_D03 (x(Sb) 0.23994) + CU3SB_D0A (x(Sb) 0.25) |
| CuSb-09Gie.tdb | 653.17 | FCC_A1 (x(Sb) 0.03048) + CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) |
| CuSb-09Gie.tdb | 653.17 | FCC_A1 (x(Sb) 0.03046) + CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) |
| CuSb-09Gie.tdb | 653.17 | FCC_A1 (x(Sb) 0.03046) + CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) |
| CuSb-09Gie.tdb | 534.06 | CU10SB3 (x(Sb) 0.23077) + CU3SB_D0A (x(Sb) 0.25) + CU2SB_C38 (x(Sb) 0.33333) |
| CuSb-09Gie.tdb | 415.18 | CU4SB (x(Sb) 0.2) + CU10SB3 (x(Sb) 0.23077) + CU2SB_C38 (x(Sb) 0.33333) |
| CuSb-23Liu.tdb | 920.25 | FCC_A1 (x(Sb) 0.059) + LIQUID (x(Sb) 0.18326) + BCC_A2 (x(Sb) 0.20425) |
| CuSb-23Liu.tdb | 858.09 | BCC_A2 (x(Sb) 0.31329) + CU2SB_C38 (x(Sb) 0.33) + LIQUID (x(Sb) 0.44394) |
| CuSb-23Liu.tdb | 799 | CU2SB_C38 (x(Sb) 0.33) + LIQUID (x(Sb) 0.6341) + RHOMBOHEDRAL_A7 (x(Sb) 1) |
| CuSb-23Liu.tdb | 799 | CU2SB_C38 (x(Sb) 0.33) + LIQUID (x(Sb) 0.63424) + RHOMBOHEDRAL_A7 (x(Sb) 1) |
| CuSb-23Liu.tdb | 753.64 | FCC_A1 (x(Sb) 0.04475) + CU17SB3_A3 (x(Sb) 0.15) + BCC_A2 (x(Sb) 0.21788) |
| CuSb-23Liu.tdb | 753.64 | FCC_A1 (x(Sb) 0.04478) + CU17SB3_A3 (x(Sb) 0.15) + BCC_A2 (x(Sb) 0.21787) |
| CuSb-23Liu.tdb | 739.72 | CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) + BCC_A2 (x(Sb) 0.2217) |
| CuSb-23Liu.tdb | 739.71 | CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) + BCC_A2 (x(Sb) 0.22184) |
| CuSb-23Liu.tdb | 739.71 | CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) + BCC_A2 (x(Sb) 0.22185) |
| CuSb-23Liu.tdb | 709.65 | FCC_A1 (x(Sb) 0.03325) + CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) |
| CuSb-23Liu.tdb | 709.65 | FCC_A1 (x(Sb) 0.0332) + CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) |
| CuSb-23Liu.tdb | 709.65 | FCC_A1 (x(Sb) 0.0332) + CU17SB3_A3 (x(Sb) 0.15) + CU4SB (x(Sb) 0.2) |
| CuSb-23Liu.tdb | 707.55 | BCC_A2 (x(Sb) 0.24852) + CU3SB_D0A (x(Sb) 0.25) + CU2SB_C38 (x(Sb) 0.33) |
| CuSb-23Liu.tdb | 707.55 | BCC_A2 (x(Sb) 0.24856) + CU3SB_D0A (x(Sb) 0.25) + CU2SB_C38 (x(Sb) 0.33) |
| CuSb-23Liu.tdb | 707.36 | CU4SB (x(Sb) 0.2) + BCC_A2 (x(Sb) 0.24679) + CU3SB_D0A (x(Sb) 0.25) |
| CuSb-23Liu.tdb | 707.36 | CU4SB (x(Sb) 0.2) + BCC_A2 (x(Sb) 0.24683) + CU3SB_D0A (x(Sb) 0.25) |
| CuSb-23Liu.tdb | 662.16 | CU4SB (x(Sb) 0.2) + CU10SB3 (x(Sb) 0.23) + CU3SB_D0A (x(Sb) 0.25) |
| CuSb-23Liu.tdb | 632.38 | CU10SB3 (x(Sb) 0.23) + CU3SB_D0A (x(Sb) 0.25) + CU2SB_C38 (x(Sb) 0.33) |
| CuSb-23Liu.tdb | 533.3 | CU4SB (x(Sb) 0.2) + CU10SB3 (x(Sb) 0.23) + CU2SB_C38 (x(Sb) 0.33) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/CU/CU-SB.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/CU/CU-SB.json) · [CALPHAD hull CuSb-00Liu-LB](https://data.orchid-project.org/hulls/calphad-sgte/CU/CU-SB--CuSb-00Liu-LB.json) · [CALPHAD hull CuSb-09Gie](https://data.orchid-project.org/hulls/calphad-sgte/CU/CU-SB--CuSb-09Gie.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Cu–Sb system (22)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 918 | L=FCC_A1+β | L: Sb 0.19 | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 4; `ORC-MLNYRBP3EI` |  |
| 914 | L=FCC_A1+β | L: Sb 0.22 | model | [1] Gierlotka 2009 | Table 3, p. 3, row 3; `ORC-LDP5YC2GWP` |  |
| 859 | β+L=η | η: Sb 0.333333 | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 6; `ORC-TUOWAHA3M2` |  |
| 858 | β+L=η | β: Sb 0.33; η: Sb 0.333333 | model | [1] Gierlotka 2009 | Table 3, p. 3, row 5; `ORC-QC7TUUDJMR` |  |
| 799 | L=η+Rhombo | L: Sb 0.63; η: Sb 0.333333; Rhombo: Sb 1 | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 8; `ORC-GH2ETFCMQS` |  |
| 798 | L=η+Rhombo | L: Sb 0.61; η: Sb 0.333333; Rhombo: Sb 1 | model | [1] Gierlotka 2009 | Table 3, p. 3, row 7; `ORC-E4HNX7CS3H` |  |
| 761 | FCC_A1+β=γ | γ: Sb 0.15 | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 10; `ORC-KF6Z73N2LO` |  |
| 756 | FCC_A1+β=γ | FCC_A1: Sb 0.15; γ: Sb 0.15 | model | [1] Gierlotka 2009 | Table 3, p. 3, row 9; `ORC-BWS43XWSYO` |  |
| 735 | γ+β=δ | γ: Sb 0.2; δ: Sb 0.2 | model | [1] Gierlotka 2009 | Table 3, p. 3, row 11; `ORC-BMJHF74DD5` |  |
| 735 | γ+β=δ | γ: Sb 0.15; δ: Sb 0.2 | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 12; `ORC-CD74424HHN` |  |
| 718 | δ+β=ε | δ: Sb 0.2; ε: Sb 0.25 | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 14; `ORC-E7N26RHGD6` |  |
| 717 | δ+β=ε | δ: Sb 0.25; ε: Sb 0.25 | model | [1] Gierlotka 2009 | Table 3, p. 3, row 13; `ORC-DHBIUYCDVO` |  |
| 716 | β=ε+η | β: Sb 0.24; ε: Sb 0.25; η: Sb 0.333333 | model | [1] Gierlotka 2009 | Table 3, p. 3, row 15; `ORC-KYZTNQQYR3` |  |
| 713 | β=ε+η | ε: Sb 0.25; η: Sb 0.333333 | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 16; `ORC-XZY4UFZGPT` |  |
| 673 | γ=FCC_A1+δ | γ: Sb 0.15; δ: Sb 0.2 | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 18; `ORC-RDHNQ2MMK5` |  |
| 672 | γ=FCC_A1+δ | γ: Sb 0.15; δ: Sb 0.2 | model | [1] Gierlotka 2009 | Table 3, p. 3, row 17; `ORC-ZAAXV4QEET` |  |
| 663 | δ+ε=ζ | δ: Sb 0.23; ε: Sb 0.25; ζ: Sb 0.230769 | model | [1] Gierlotka 2009 | Table 3, p. 3, row 19; `ORC-HNHNLCGUMH` |  |
| 663 | δ+ε=ζ | δ: Sb 0.2; ε: Sb 0.25; ζ: Sb 0.230769 | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 20; `ORC-LDZPZXHV5H` |  |
| 633 | ε=ζ+η | ε: Sb 0.25; ζ: Sb 0.230769; η: Sb 0.333333 | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 22; `ORC-BRP3FBNZCE` |  |
| 633 | ε=ζ+η | ε: Sb 0.25; ζ: Sb 0.230769; η: Sb 0.333333 | model | [1] Gierlotka 2009 | Table 3, p. 3, row 21; `ORC-YSCSE7FKGA` |  |
| 533 | ζ=δ+η | ζ: Sb 0.230769; δ: Sb 0.2; η: Sb 0.333333 | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 24; `ORC-QZSZVB54Y6` |  |
| 529 | ζ=δ+η | ζ: Sb 0.23; δ: Sb 0.2; η: Sb 0.333333 | model | [1] Gierlotka 2009 | Table 3, p. 3, row 23; `ORC-GIHSRDRNDY` |  |

## 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, Cu–Sb system (19)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| γ |  | -2.845 kJ/mol (basis unstated) | 775 | model |  |  | [1] Gierlotka 2009 | Table 5, p. 5, row 3; `ORC-3YBLUPYMGP` |  |
| γ |  | -2.68 kJ/mol (basis unstated) | 775 | experimental |  |  | [1] Gierlotka 2009; _cites Murakami 1936_ | Table 5, p. 5, row 4; `ORC-CPRS4FVLU4` |  |
| γ(Cu17Sb3) |  | -2.68 kJ/mol-atom |  | model |  |  | [2] Liu 2000 | Table 2, p. 3, row 1; `ORC-TPKUCFMJKA.ff4e17` |  |
| γ(Cu17Sb3) |  | -0.27 kJ/mol-atom | 775.15 | experimental |  |  | [2] Liu 2000; _cites Hultgren 1973_ | Table 2, p. 3, row 2; `ORC-7WOTLSFIUO.020802` |  |
| δ |  | -5.486 kJ/mol (basis unstated) | 775 | model |  |  | [1] Gierlotka 2009 | Table 5, p. 5, row 1; `ORC-QLDIVPWYGE` |  |
| δ |  | -5.142 kJ/mol (basis unstated) | 775 | experimental |  |  | [1] Gierlotka 2009; _cites Murakami 1936_ | Table 5, p. 5, row 2; `ORC-WXNLWZBRT7` |  |
| δ(Cu4Sb) |  | -5.142 kJ/mol-atom |  | model |  |  | [2] Liu 2000 | Table 2, p. 3, row 3; `ORC-CRHSG3GA6C.19ce75` |  |
| ε |  | -5.282 kJ/mol (basis unstated) | 775 | model |  |  | [1] Gierlotka 2009 | Table 5, p. 5, row 5; `ORC-ORULJ4SQES` |  |
| ε |  | -4.718 kJ/mol (basis unstated) | 775 | experimental |  |  | [1] Gierlotka 2009; _cites Murakami 1936_ | Table 5, p. 5, row 6; `ORC-H46LQCXH6M` |  |
| ε(Cu3Sb) | [Cu3Sb](https://data.orchid-project.org/compounds/Cu3Sb.html) | -4.718 kJ/mol-atom |  | model | 3.13 (mp-aaaabexw) | 6.48 (oqmd-320322) | [2] Liu 2000 | Table 2, p. 3, row 4; `ORC-XLTIVDRTXK.120f23` |  |
| ζ |  | -5.513 kJ/mol (basis unstated) | 775 | model |  |  | [1] Gierlotka 2009 | Table 5, p. 5, row 9; `ORC-AJAUBT6KOJ` |  |
| ζ |  | -4.936 kJ/mol (basis unstated) | 775 | experimental |  |  | [1] Gierlotka 2009; _cites Murakami 1936_ | Table 5, p. 5, row 10; `ORC-5YIOBMDJP2` |  |
| ζ(Cu10Sb3) | [Cu10Sb3](https://data.orchid-project.org/compounds/Cu10Sb3.html) | -4.936 kJ/mol-atom |  | model | 2.094 (mp-aaaaaczc) | 5.616 (oqmd-8425) | [2] Liu 2000 | Table 2, p. 3, row 5; `ORC-X2KCSO7KLU.1b7401` |  |
| η |  | -4.753 kJ/mol (basis unstated) | 773 | model |  |  | [1] Gierlotka 2009 | Table 5, p. 5, row 7; `ORC-5EFTYSPONN` |  |
| η |  | -4.23 kJ/mol (basis unstated) | 773 | experimental |  |  | [1] Gierlotka 2009; _cites Vecher 1958_ | Table 5, p. 5, row 8; `ORC-KQZNCUFPPF` |  |
| η(Cu2Sb) | [Cu2Sb](https://data.orchid-project.org/compounds/Cu2Sb.html) | -4.351 kJ/mol-atom |  | model | -3.932 (mp-aaaaacsf) | 1.093 (oqmd-3607) | [2] Liu 2000 | Table 2, p. 3, row 6; `ORC-6KC4U5T6B6.38774d` |  |
| η(Cu2Sb) | [Cu2Sb](https://data.orchid-project.org/compounds/Cu2Sb.html) | -4.23 kJ/mol-atom | 723.15 | experimental | -3.932 (mp-aaaaacsf) | 1.093 (oqmd-3607) | [2] Liu 2000; _cites Kleppa 1956_ [doi](https://doi.org/10.1021/j150541a005) | Table 2, p. 3, row 7; `ORC-W3QZAQ62R7.d6a452` |  |
| η(Cu2Sb) | [Cu2Sb](https://data.orchid-project.org/compounds/Cu2Sb.html) | -4.205 kJ/mol-atom | 775.15 | experimental | -3.932 (mp-aaaaacsf) | 1.093 (oqmd-3607) | [2] Liu 2000; _cites Hultgren 1973_ | Table 2, p. 3, row 8; `ORC-7TGOGMZCN7.438199` |  |
| η(Cu2Sb) | [Cu2Sb](https://data.orchid-project.org/compounds/Cu2Sb.html) | -1.35 kJ/mol-atom | 773.15 | experimental | -3.932 (mp-aaaaacsf) | 1.093 (oqmd-3607) | [2] Liu 2000; _cites Brodowski 1982_ | Table 2, p. 3, row 9; `ORC-FCDAWNL3P5.5af3a5` |  |

## Other properties

### Phase transition (2)

Table: Phase transition, Cu–Sb system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 956 K | 956 | L=β | experimental | [1] Gierlotka 2009; _cites Subramanian_ | Table 3, p. 3, row 2; `ORC-BSYMZUHWPT` |  |
| Phase transition | 958 K | 958 | L=β; _L: Sb 0.25; β: Sb 0.25_ | model | [1] Gierlotka 2009 | Table 3, p. 3, row 1; `ORC-4QNJFAP7CB` |  |

### Crystal structure (12)

Table: Crystal structure, Cu–Sb system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a | 6 Å |  | β (Cu3Sb); _alloy: Sb 0.25_ | experimental | [3] Liu 2023; _cites Hofmann 1941_ [doi](https://doi.org/10.1515/ijmr-1941-331103) | Table 1, p. 3, row 5; `ORC-2JCQP5AKO4` |  |
| Lattice a | 2.752 Å | 298.15 | γ (Cu17Sb3); _alloy: Sb 0.15_ | experimental | [3] Liu 2023; _cites Schubert 1957_ [doi](https://doi.org/10.1007/bf00595784) | Table 1, p. 3, row 7; `ORC-V24TZYL4DD.6a3c98` |  |
| Lattice a | 19.124 Å | 298.15 | δ (Cu78Sb20); _alloy: Sb 0.204082_ | experimental | [3] Liu 2023; _cites Yamaguchi 1972_ [doi](https://doi.org/10.1143/jpsj.33.708) | Table 1, p. 3, row 9; `ORC-HXQOMUZMC3.c12248` |  |
| Lattice a | 5.504 Å | 298.15 | ε (Cu3Sb); _alloy: Sb 0.25_ | experimental | [3] Liu 2023; _cites Karlsson 1972_ [doi](https://doi.org/10.1107/s0567740872006120) | Table 1, p. 3, row 6; `ORC-PWWYRDXYF4.b80702` |  |
| Lattice a | 4.0014 Å | 298.15 | η (Cu2Sb); _alloy: Sb 0.333333_ | experimental | [3] Liu 2023; _cites Pearson 1964_ [doi](https://doi.org/10.1139/p64-047) | Table 1, p. 3, row 4; `ORC-F7DI7XXDE5.055456` |  |
| Lattice a | 9.92 Å | 298.15 | ξ(Cu10Sb3); _alloy: Sb 0.230769_ | experimental | [3] Liu 2023; _cites Gunzel 1958_ [doi](https://doi.org/10.1515/ijmr-1958-490302) | Table 1, p. 3, row 8; `ORC-DWPIL3ARS7.cf2014` |  |
| Lattice b | 4.353 Å | 298.15 | ε (Cu3Sb); _alloy: Sb 0.25_ | experimental | [3] Liu 2023; _cites Karlsson 1972_ [doi](https://doi.org/10.1107/s0567740872006120) | Table 1, p. 3, row 6; `ORC-PWWYRDXYF4.59b0cf` |  |
| Lattice c | 4.32 Å | 298.15 | γ (Cu17Sb3); _alloy: Sb 0.15_ | experimental | [3] Liu 2023; _cites Schubert 1957_ [doi](https://doi.org/10.1007/bf00595784) | Table 1, p. 3, row 7; `ORC-V24TZYL4DD.81de26` |  |
| Lattice c | 4.32476 Å | 298.15 | δ (Cu78Sb20); _alloy: Sb 0.204082_ | experimental | [3] Liu 2023; _cites Yamaguchi 1972_ [doi](https://doi.org/10.1143/jpsj.33.708) | Table 1, p. 3, row 9; `ORC-HXQOMUZMC3.8f3550` |  |
| Lattice c | 4.768 Å | 298.15 | ε (Cu3Sb); _alloy: Sb 0.25_ | experimental | [3] Liu 2023; _cites Karlsson 1972_ [doi](https://doi.org/10.1107/s0567740872006120) | Table 1, p. 3, row 6; `ORC-PWWYRDXYF4.868a62` |  |
| Lattice c | 6.1044 Å | 298.15 | η (Cu2Sb); _alloy: Sb 0.333333_ | experimental | [3] Liu 2023; _cites Pearson 1964_ [doi](https://doi.org/10.1139/p64-047) | Table 1, p. 3, row 4; `ORC-F7DI7XXDE5.4beed7` |  |
| Lattice c | 4.32 Å | 298.15 | ξ(Cu10Sb3); _alloy: Sb 0.230769_ | experimental | [3] Liu 2023; _cites Gunzel 1958_ [doi](https://doi.org/10.1515/ijmr-1958-490302) | Table 1, p. 3, row 8; `ORC-DWPIL3ARS7.386b64` |  |

## Sources

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

1. Wojciech Gierlotka, Dominika Jendrzejczyk-Handzlik, Thermodynamic description of the Cu–Sb binary system, Journal of Alloys and Compounds 484, 172-176 (2009). [doi:10.1016/j.jallcom.2009.05.056](https://doi.org/10.1016/j.jallcom.2009.05.056)
2. X. J. Liu, C. P. Wang, I. Ohnuma, R. Kainuma, K. Ishida, Thermodynamic assessment of the phase diagrams of the Cu-Sb and Sb-Zn systems, JPE 21, 432-442 (2000). [doi:10.1361/105497100770339608](https://doi.org/10.1361/105497100770339608)
3. Runlin Liu, Jiong Wang, Dongyu Cui, Thermodynamic Modeling of the Cu-Sb-Se System, J. Phase Equilib. Diffus. 44, 687-703 (2023). [doi:10.1007/s11669-023-01074-8](https://doi.org/10.1007/s11669-023-01074-8)

## 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/).