# Cu–La phases
> Cu–La system: 13 phases (tier A 7, tier C 1, liquid 1, needs_review 4); 12 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references.
HTML: https://data.orchid-project.org/phases/pages/CU-LA.html · Markdown: https://data.orchid-project.org/phases/pages/CU-LA.md
13 phases (tier A 7, tier C 1, liquid 1, needs_review 4); 12 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).
Data: [interactive registry](https://orchid-project.org/phases/?q=CU-LA) · [full JSON](https://data.orchid-project.org/phases/systems/CU-LA.json) · [Cu–La system page](https://data.orchid-project.org/systems/CU-LA.html) · [Markdown](https://data.orchid-project.org/phases/pages/CU-LA.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)
Table: Phases of the Cu–La system (13)
| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-cu-la-bcc-a2); _phase:cu-la:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 1134–2499 K, x(La) 1–1 | 0 | 3 |
| [CU2LA_C32](#phase-cu-la-cu2la-c32); _phase:cu-la:cu2la-c32_ | AlB2 · C32 · hP3 · P6/mmm (191) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1101.61 K, x(La) 0.33333–0.33333 | 7 | 3 |
| [CU37LA3_D23](#phase-cu-la-cu37la3-d23); _phase:cu-la:cu37la3-d23_ | | needs_review | stable in 2 of 2 calculated diagram(s): 1092.77–1146.62 K, x(La) 0.075–0.075 | 5 | 2 |
| [CU4LA](#phase-cu-la-cu4la); _phase:cu-la:cu4la_ | Cu4La · tI90 · I-4m2 (119) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1014.78 K, x(La) 0.2–0.2 | 4 | 2 |
| [CU5LA_D2D](#phase-cu-la-cu5la-d2d); _phase:cu-la:cu5la-d2d_ | CaCu5 · D2_d · hP6 · P6/mmm (191) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1072.48 K, x(La) 0.16667–0.16667 | 6 | 3 |
| [CU6LA](#phase-cu-la-cu6la); _phase:cu-la:cu6la_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–1175.04 K, x(La) 0.14286–0.14286 | 1 | 1 |
| [CU6LA_A](#phase-cu-la-cu6la-a); _phase:cu-la:cu6la-a_ | | needs_review | stable in 2 of 2 calculated diagram(s): 300–500.05 K, x(La) 0.14286–0.14286 | 2 | 2 |
| [CU6LA_B](#phase-cu-la-cu6la-b); _phase:cu-la:cu6la-b_ | | needs_review | stable in 2 of 2 calculated diagram(s): 500–1194.51 K, x(La) 0.14286–0.14286 | 13 | 2 |
| [CULA_B27](#phase-cu-la-cula-b27); _phase:cu-la:cula-b27_ | FeB · B27 · oP8 · Pnma (62) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–802.21 K, x(La) 0.5–0.5 | 4 | 3 |
| [DHCP](#phase-cu-la-dhcp-a3); _phase:cu-la:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1125 K, x(La) 1–1 | 0 | 3 |
| [FCC_A1](#phase-cu-la-fcc-a1); _phase:cu-la:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1393.06 K, x(La) 0–1 | 8 | 3 |
| [HCP_A3](#phase-cu-la-hcp-a3); _phase:cu-la:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 3 |
| [LIQUID](#phase-cu-la-liquid); _phase:cu-la:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 747.98–2500 K, x(La) 0–1 | 22 | 3 |
## BCC_A2 (Cu–La)
- Id: `phase:cu-la:bcc-a2`; status `assigned`
- Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; tier A: standard phase name; confidence high
- Stability: stable in 3 of 3 calculated diagram(s): 1134–2499 K, x(La) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:bcc-a2)
Names (4): _corpus: _corpus:phase:cu-la:bcc-a2
_tdb: _tdb:CuLa-12An.tdb:BCC_A2, tdb:CuLa-89Qi.tdb:BCC_A2, tdb:CuLa-99Du.tdb:BCC_A2
### TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): BCC_A2, type code %B, sha256 `96d6ecf2e7f37b9c…`
~~~~text
34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : CU LA : VA : !
~~~~
[CuLa-89Qi.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-89Qi.tdb): BCC_A2, type code %B, sha256 `c0ed7e9c7856491b…`
~~~~text
33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : CU LA : VA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): BCC_A2, type code %B, sha256 `41bc14252d38c854…`
~~~~text
32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : CU LA : VA : !
~~~~
Example references (3 of 3; assessments first):
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase_
- [doi:10.1515/ijmr-1989-801206](https://doi.org/10.1515/ijmr-1989-801206) G. Qi, K. Itagaki, S. an Mey, P.J. Spencer, Z. Metallkd., 80, 883-87(1989).
_assessment that models this phase_
## CU2LA_C32 (Cu–La)
- Id: `phase:cu-la:cu2la-c32`; status `assigned`
- Structure: AlB2 · C32 · hP3 · P6/mmm (191); type `st:c32-alb2-hp3`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaaadax and oqmd-29715, space group 191
- Stoichiometry: Cu 0.6667, La 0.3333
- Stability: stable in 3 of 3 calculated diagram(s): 300–1101.61 K, x(La) 0.33333–0.33333
- Literature: 7 values (7 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:cu2la-c32)
Names (7): _corpus: _corpus:phase:cu-la:cu2la-c32
_mp: _mp:mp-aaaaadax
_oqmd: _oqmd:oqmd-29715
_paper: _paper:10.1016/s0925-8388(99)00080-8:Cu2La
_tdb: _tdb:CuLa-12An.tdb:CU2LA_C32, tdb:CuLa-89Qi.tdb:CU2LA_C32, tdb:CuLa-99Du.tdb:CU2LA_C32
### TDB models of CU2LA_C32 (3): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): CU2LA_C32, type code %, sha256 `96d6ecf2e7f37b9c…`
~~~~text
74: PHASE CU2LA_C32 % 2 2 1 !
75: CONST CU2LA_C32 : CU : LA : !
~~~~
[CuLa-89Qi.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-89Qi.tdb): CU2LA_C32, type code %, sha256 `c0ed7e9c7856491b…`
~~~~text
59: PHASE CU2LA_C32 % 2 2 1 !
60: CONST CU2LA_C32 : CU : LA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): CU2LA_C32, type code %, sha256 `41bc14252d38c854…`
~~~~text
72: PHASE CU2LA_C32 % 2 2 1 !
73: CONST CU2LA_C32 : CU : LA : !
~~~~
Example references (5 of 5; assessments first):
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1515/ijmr-1989-801206](https://doi.org/10.1515/ijmr-1989-801206) G. Qi, K. Itagaki, S. an Mey, P.J. Spencer, Z. Metallkd., 80, 883-87(1989).
_assessment that models this phase_
- [doi:10.1016/0022-5088(77)90104-7](https://doi.org/10.1016/0022-5088%2877%2990104-7) S. Cirafici, A. Palenzona, The lanthanum-copper system, Journal of the Less Common Metals 53, 199-203 (1977).
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(85)90308-x](https://doi.org/10.1016/0022-5088%2885%2990308-x) F. Meyer-Liautaud, C.H. Allibert, J.M. Moreau, New phases in the system LaCu, Journal of the Less Common Metals 110, 81-90 (1985).
_cited as the source of values for this phase_
## CU37LA3_D23 (Cu–La)
- Id: `phase:cu-la:cu37la3-d23`; status `needs_review`
- No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_D2_3; stoichiometry_contradicts_D2_3:CuLa-12An.tdb; stoichiometry_contradicts_D2_3:CuLa-99Du.tdb
- Candidate (literature_printed): NaZn13 · cF112 — printed with a label mapped to this phase
- Candidate (name_token): NaZn13 · D2_3 · cF112 · Fm-3c (226) — Strukturbericht/word 'D23' in the TDB name
- Candidate (sgte_mmc2): NaZn13 · D2_3 · cF112 · Fm-3c (226) — Hallstedt 2025 mmc2 row for CU37LA3_D23: Cu37La3 (also Cu13La)
- Candidate (tdb_comment): NaZn13 · cF112 · Fm-3c — CuLa-12An.tdb: 'Prototype NaZn13 (cF112, Fm-3c); also Cu13La'
- Candidate (tdb_comment): NaZn13 · cF112 · Fm-3c — CuLa-99Du.tdb: 'Prototype NaZn13 (cF112, Fm-3c); also Cu13La'
- Stoichiometry: Cu 0.9250, La 0.0750
- Stability: stable in 2 of 2 calculated diagram(s): 1092.77–1146.62 K, x(La) 0.075–0.075
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:cu37la3-d23)
Names (4): _corpus: _corpus:phase:cu-la:cu37la3-d23
_paper: _paper:10.1016/s0925-8388(99)00080-8:Cu37La3
_tdb: _tdb:CuLa-12An.tdb:CU37LA3_D23, tdb:CuLa-99Du.tdb:CU37LA3_D23
### TDB models of CU37LA3_D23 (2): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): CU37LA3_D23, type code %, sha256 `96d6ecf2e7f37b9c…`
~~~~text
49: PHASE CU37LA3_D23 % 2 37 3 !
50: CONST CU37LA3_D23 : CU : LA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): CU37LA3_D23, type code %, sha256 `41bc14252d38c854…`
~~~~text
47: PHASE CU37LA3_D23 % 2 37 3 !
48: CONST CU37LA3_D23 : CU : LA : !
~~~~
Example references (3 of 3; assessments first):
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1016/0022-5088(85)90308-x](https://doi.org/10.1016/0022-5088%2885%2990308-x) F. Meyer-Liautaud, C.H. Allibert, J.M. Moreau, New phases in the system LaCu, Journal of the Less Common Metals 110, 81-90 (1985).
_cited as the source of values for this phase_
## CU4LA (Cu–La)
- Id: `phase:cu-la:cu4la`; status `assigned`
- Structure: Cu4La · tI90 · I-4m2 (119); type `st:cu4la-ti90`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
- Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](https://doi.org/10.1016/j.calphad.2025.102833)
- Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Cu 0.8000, La 0.2000
- Stability: stable in 2 of 2 calculated diagram(s): 300–1014.78 K, x(La) 0.2–0.2
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:cu4la)
Names (4): _corpus: _corpus:phase:cu-la:cu4la
_paper: _paper:10.1016/s0925-8388(99)00080-8:Cu4La
_tdb: _tdb:CuLa-12An.tdb:CU4LA, tdb:CuLa-99Du.tdb:CU4LA
### TDB models of CU4LA (2): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): CU4LA, type code %, sha256 `96d6ecf2e7f37b9c…`
~~~~text
69: PHASE CU4LA % 2 4 1 !
70: CONST CU4LA : CU : LA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): CU4LA, type code %, sha256 `41bc14252d38c854…`
~~~~text
67: PHASE CU4LA % 2 4 1 !
68: CONST CU4LA : CU : LA : !
~~~~
Example references (3 of 3; assessments first):
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1016/0022-5088(85)90308-x](https://doi.org/10.1016/0022-5088%2885%2990308-x) F. Meyer-Liautaud, C.H. Allibert, J.M. Moreau, New phases in the system LaCu, Journal of the Less Common Metals 110, 81-90 (1985).
_cited as the source of values for this phase_
## CU5LA_D2D (Cu–La)
- Id: `phase:cu-la:cu5la-d2d`; status `assigned`
- Structure: CaCu5 · D2_d · hP6 · P6/mmm (191); type `st:d2-d-cacu5-hp6`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaaadwn and oqmd-18822, space group 191
- Stoichiometry: Cu 0.8333, La 0.1667
- Stability: stable in 3 of 3 calculated diagram(s): 300–1072.48 K, x(La) 0.16667–0.16667
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:cu5la-d2d)
Names (7): _corpus: _corpus:phase:cu-la:cu5la-d2d
_mp: _mp:mp-aaaaadwn
_oqmd: _oqmd:oqmd-18822
_paper: _paper:10.1016/s0925-8388(99)00080-8:Cu5La
_tdb: _tdb:CuLa-12An.tdb:CU5LA_D2D, tdb:CuLa-89Qi.tdb:CU5LA_D2D, tdb:CuLa-99Du.tdb:CU5LA_D2D
### TDB models of CU5LA_D2D (3): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): CU5LA_D2D, type code %, sha256 `96d6ecf2e7f37b9c…`
~~~~text
64: PHASE CU5LA_D2D % 2 5 1 !
65: CONST CU5LA_D2D : CU : LA : !
~~~~
[CuLa-89Qi.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-89Qi.tdb): CU5LA_D2D, type code %, sha256 `c0ed7e9c7856491b…`
~~~~text
54: PHASE CU5LA_D2D % 2 5 1 !
55: CONST CU5LA_D2D : CU : LA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): CU5LA_D2D, type code %, sha256 `41bc14252d38c854…`
~~~~text
62: PHASE CU5LA_D2D % 2 5 1 !
63: CONST CU5LA_D2D : CU : LA : !
~~~~
Example references (5 of 5; assessments first):
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1515/ijmr-1989-801206](https://doi.org/10.1515/ijmr-1989-801206) G. Qi, K. Itagaki, S. an Mey, P.J. Spencer, Z. Metallkd., 80, 883-87(1989).
_assessment that models this phase_
- [doi:10.1016/0022-5088(77)90104-7](https://doi.org/10.1016/0022-5088%2877%2990104-7) S. Cirafici, A. Palenzona, The lanthanum-copper system, Journal of the Less Common Metals 53, 199-203 (1977).
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(85)90308-x](https://doi.org/10.1016/0022-5088%2885%2990308-x) F. Meyer-Liautaud, C.H. Allibert, J.M. Moreau, New phases in the system LaCu, Journal of the Less Common Metals 110, 81-90 (1985).
_cited as the source of values for this phase_
## CU6LA (Cu–La)
- Id: `phase:cu-la:cu6la`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition
- Candidate (tdb_comment): Cu6La · mP28 · P2_1/c — CuLa-89Qi.tdb: 'Prototype Cu6La (mP28, P2_1/c), low T'
- Stoichiometry: Cu 0.8571, La 0.1429
- Stability: stable in 1 of 1 calculated diagram(s): 300–1175.04 K, x(La) 0.14286–0.14286
- Literature: 1 values (1 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:cu6la)
Names (3): _corpus: _corpus:phase:cu-la:cu6la
_paper: _paper:10.1016/s0925-8388(99)00080-8:Cu6La
_tdb: _tdb:CuLa-89Qi.tdb:CU6LA
### TDB models of CU6LA (1): PHASE and CONSTITUENT statements as written
[CuLa-89Qi.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-89Qi.tdb): CU6LA, type code %, sha256 `c0ed7e9c7856491b…`
~~~~text
49: PHASE CU6LA % 2 6 1 !
50: CONST CU6LA : CU : LA : !
~~~~
Example references (5 of 5; assessments first):
- [doi:10.1515/ijmr-1989-801206](https://doi.org/10.1515/ijmr-1989-801206) G. Qi, K. Itagaki, S. an Mey, P.J. Spencer, Z. Metallkd., 80, 883-87(1989).
_assessment that models this phase_
- [doi:10.1007/bf02667340](https://doi.org/10.1007/bf02667340) Shunroku Watanabe, O. J. Kleppa, Thermochemistry of alloys of transition metals: Part IV. Alloys of copper with scandium, yttrium, lanthanum, and lutetium, Metall Trans B 15, 357-368 (1984).
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(86)90092-5](https://doi.org/10.1016/0022-5088%2886%2990092-5) Ferdinand Sommer, Joachim Schott, Bruno Predel, Thermodynamic investigations of Cu-Dy, Cu-Er, Cu-Gd and Cu-La alloys, Journal of the Less Common Metals 125, 175-181 (1986).
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(89)90389-5](https://doi.org/10.1016/0022-5088%2889%2990389-5) F. Sommer, D.K. Choi, H.-G. Krull, Determination of the copper activity of liquid CuLa alloys, Journal of the Less Common Metals 146, 319-325 (1989).
_cited as the source of values for this phase_
- [doi:10.1016/s0925-8388(99)00080-8](https://doi.org/10.1016/s0925-8388%2899%2900080-8) Zhenmin Du, Yunhua Xu, Weijing Zhang, Thermodynamic assessment of the Cu–La system, Journal of Alloys and Compounds 289, 88-95 (1999).
_reports values for this phase_
## CU6LA_A (Cu–La)
- Id: `phase:cu-la:cu6la-a`; status `needs_review`
- No structure assigned. Why: name_has_descriptive_tokens:A; no_structure_token
- Candidate (sgte_mmc2): Cu6La · mP28 · P2_1/c (14) — Hallstedt 2025 mmc2 row for CU6LA_A: Cu6La-alpha
- Candidate (tdb_comment): Cu6La · mP28 · P2_1/c — CuLa-12An.tdb: 'Prototype Cu6La (mP28, P2_1/c)'
- Candidate (tdb_comment): Cu6La · mP28 · P2_1/c — CuLa-99Du.tdb: 'Prototype Cu6La (mP28, P2_1/c)'
- Stoichiometry: Cu 0.8571, La 0.1429
- Stability: stable in 2 of 2 calculated diagram(s): 300–500.05 K, x(La) 0.14286–0.14286
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:cu6la-a)
Names (4): _corpus: _corpus:phase:cu-la:cu6la-a
_paper: _paper:10.1016/s0925-8388(99)00080-8:αCu6La
_tdb: _tdb:CuLa-12An.tdb:CU6LA_A, tdb:CuLa-99Du.tdb:CU6LA_A
### TDB models of CU6LA_A (2): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): CU6LA_A, type code %, sha256 `96d6ecf2e7f37b9c…`
~~~~text
54: PHASE CU6LA_A % 2 6 1 !
55: CONST CU6LA_A : CU : LA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): CU6LA_A, type code %, sha256 `41bc14252d38c854…`
~~~~text
52: PHASE CU6LA_A % 2 6 1 !
53: CONST CU6LA_A : CU : LA : !
~~~~
Example references (3 of 3; assessments first):
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1143/jpsj.56.3553](https://doi.org/10.1143/jpsj.56.3553) Kazuyoshi Yamada, Ichiro Hirosawa, Yasuhisa Noda, Yasuo Endoh, Yoshichika Ōnuki, Takemi Komatsubara, Neutron Scattering Studies on Structural Phase Transition in CeCu\6\and LaCu\6\, J. Phys. Soc. Jpn. 56, 3553-3557 (1987).
_cited as the source of values for this phase_
## CU6LA_B (Cu–La)
- Id: `phase:cu-la:cu6la-b`; status `needs_review`
- No structure assigned. Why: name_has_descriptive_tokens:B; no_structure_token
- Candidate (sgte_mmc2): CeCu6 · oP28 · Pnma (62) — Hallstedt 2025 mmc2 row for CU6LA_B: Cu6La-beta
- Candidate (tdb_comment): CeCu6 · oP28 · Pnma — CuLa-12An.tdb: 'Prototype CeCu6 (oP28, Pnma)'
- Candidate (tdb_comment): CeCu6 · oP28 · Pnma — CuLa-99Du.tdb: 'Prototype CeCu6 (oP28, Pnma)'
- Stoichiometry: Cu 0.8571, La 0.1429
- Stability: stable in 2 of 2 calculated diagram(s): 500–1194.51 K, x(La) 0.14286–0.14286
- Literature: 13 values (13 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:cu6la-b)
Names (5): _corpus: _corpus:phase:cu-la:cu6la-b
_paper: _paper:10.1016/s0925-8388(99)00080-8:Cu6La, paper:10.1016/s0925-8388(99)00080-8:βCu6La
_tdb: _tdb:CuLa-12An.tdb:CU6LA_B, tdb:CuLa-99Du.tdb:CU6LA_B
### TDB models of CU6LA_B (2): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): CU6LA_B, type code %, sha256 `96d6ecf2e7f37b9c…`
~~~~text
59: PHASE CU6LA_B % 2 6 1 !
60: CONST CU6LA_B : CU : LA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): CU6LA_B, type code %, sha256 `41bc14252d38c854…`
~~~~text
57: PHASE CU6LA_B % 2 6 1 !
58: CONST CU6LA_B : CU : LA : !
~~~~
Example references (5 of 5; assessments first):
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1016/0022-5088(85)90308-x](https://doi.org/10.1016/0022-5088%2885%2990308-x) F. Meyer-Liautaud, C.H. Allibert, J.M. Moreau, New phases in the system LaCu, Journal of the Less Common Metals 110, 81-90 (1985).
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(77)90104-7](https://doi.org/10.1016/0022-5088%2877%2990104-7) S. Cirafici, A. Palenzona, The lanthanum-copper system, Journal of the Less Common Metals 53, 199-203 (1977).
_cited as the source of values for this phase_
- [doi:10.1143/jpsj.56.3553](https://doi.org/10.1143/jpsj.56.3553) Kazuyoshi Yamada, Ichiro Hirosawa, Yasuhisa Noda, Yasuo Endoh, Yoshichika Ōnuki, Takemi Komatsubara, Neutron Scattering Studies on Structural Phase Transition in CeCu\6\and LaCu\6\, J. Phys. Soc. Jpn. 56, 3553-3557 (1987).
_cited as the source of values for this phase_
## CULA_B27 (Cu–La)
- Id: `phase:cu-la:cula-b27`; status `assigned`
- Structure: FeB · B27 · oP8 · Pnma (62); type `st:b27-feb-op8`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaacjkay and oqmd-29712, space group 62
- Stoichiometry: Cu 0.5000, La 0.5000
- Stability: stable in 3 of 3 calculated diagram(s): 300–802.21 K, x(La) 0.5–0.5
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:cula-b27)
Names (7): _corpus: _corpus:phase:cu-la:cula-b27
_mp: _mp:mp-aaacjkay
_oqmd: _oqmd:oqmd-29712
_paper: _paper:10.1016/s0925-8388(99)00080-8:CuLa
_tdb: _tdb:CuLa-12An.tdb:CULA_B27, tdb:CuLa-89Qi.tdb:CULA_B27, tdb:CuLa-99Du.tdb:CULA_B27
### TDB models of CULA_B27 (3): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): CULA_B27, type code %, sha256 `96d6ecf2e7f37b9c…`
~~~~text
79: PHASE CULA_B27 % 2 1 1 !
80: CONST CULA_B27 : CU : LA : !
~~~~
[CuLa-89Qi.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-89Qi.tdb): CULA_B27, type code %, sha256 `c0ed7e9c7856491b…`
~~~~text
64: PHASE CULA_B27 % 2 1 1 !
65: CONST CULA_B27 : CU : LA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): CULA_B27, type code %, sha256 `41bc14252d38c854…`
~~~~text
77: PHASE CULA_B27 % 2 1 1 !
78: CONST CULA_B27 : CU : LA : !
~~~~
Example references (4 of 4; assessments first):
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1515/ijmr-1989-801206](https://doi.org/10.1515/ijmr-1989-801206) G. Qi, K. Itagaki, S. an Mey, P.J. Spencer, Z. Metallkd., 80, 883-87(1989).
_assessment that models this phase_
- [doi:10.1016/0022-5088(77)90104-7](https://doi.org/10.1016/0022-5088%2877%2990104-7) S. Cirafici, A. Palenzona, The lanthanum-copper system, Journal of the Less Common Metals 53, 199-203 (1977).
_cited as the source of values for this phase_
## DHCP (Cu–La)
- Id: `phase:cu-la:dhcp-a3`; status `assigned`
- Structure: alpha-La · A3' · hP4 · P6_3/mmc (194); type `st:a3-alpha-la-hp4`; tier A: standard phase name; confidence high
- Stoichiometry: La 1.0000
- Stability: stable in 3 of 3 calculated diagram(s): 300–1125 K, x(La) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:dhcp-a3)
Names (4): _corpus: _corpus:phase:cu-la:dhcp-a3
_tdb: _tdb:CuLa-12An.tdb:DHCP, tdb:CuLa-89Qi.tdb:DHCP, tdb:CuLa-99Du.tdb:DHCP
### TDB models of DHCP (3): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): DHCP, type code %, sha256 `96d6ecf2e7f37b9c…`
~~~~text
44: PHASE DHCP % 1 1 !
45: CONST DHCP : LA : !
~~~~
[CuLa-89Qi.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-89Qi.tdb): DHCP, type code %, sha256 `c0ed7e9c7856491b…`
~~~~text
43: PHASE DHCP % 1 1 !
44: CONST DHCP : LA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): DHCP, type code %, sha256 `41bc14252d38c854…`
~~~~text
42: PHASE DHCP % 1 1 !
43: CONST DHCP : LA : !
~~~~
Example references (3 of 3; assessments first):
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase_
- [doi:10.1515/ijmr-1989-801206](https://doi.org/10.1515/ijmr-1989-801206) G. Qi, K. Itagaki, S. an Mey, P.J. Spencer, Z. Metallkd., 80, 883-87(1989).
_assessment that models this phase_
## FCC_A1 (Cu–La)
- Id: `phase:cu-la:fcc-a1`; status `assigned`
- Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high
- Stability: stable in 3 of 3 calculated diagram(s): 300–1393.06 K, x(La) 0–1
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:fcc-a1)
Names (6): _corpus: _corpus:phase:cu-la:fcc-a1
_paper: _paper:10.1016/s0925-8388(99)00080-8:f.c.c.(Cu), paper:10.1016/s0925-8388(99)00080-8:f.c.c.(La)
_tdb: _tdb:CuLa-12An.tdb:FCC_A1, tdb:CuLa-89Qi.tdb:FCC_A1, tdb:CuLa-99Du.tdb:FCC_A1
### TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): FCC_A1, type code %A, sha256 `96d6ecf2e7f37b9c…`
~~~~text
29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : CU% LA% : VA : !
~~~~
[CuLa-89Qi.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-89Qi.tdb): FCC_A1, type code %A, sha256 `c0ed7e9c7856491b…`
~~~~text
28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : CU% LA% : VA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): FCC_A1, type code %A, sha256 `41bc14252d38c854…`
~~~~text
27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : CU% LA% : VA : !
~~~~
Example references (5 of 5; assessments first):
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1515/ijmr-1989-801206](https://doi.org/10.1515/ijmr-1989-801206) G. Qi, K. Itagaki, S. an Mey, P.J. Spencer, Z. Metallkd., 80, 883-87(1989).
_assessment that models this phase_
- [doi:10.1016/0022-5088(85)90308-x](https://doi.org/10.1016/0022-5088%2885%2990308-x) F. Meyer-Liautaud, C.H. Allibert, J.M. Moreau, New phases in the system LaCu, Journal of the Less Common Metals 110, 81-90 (1985).
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(77)90104-7](https://doi.org/10.1016/0022-5088%2877%2990104-7) S. Cirafici, A. Palenzona, The lanthanum-copper system, Journal of the Less Common Metals 53, 199-203 (1977).
_cited as the source of values for this phase_
## HCP_A3 (Cu–La)
- Id: `phase:cu-la:hcp-a3`; status `assigned`
- Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high
- Stoichiometry: Cu 1.0000
- Stability: not stable in 3 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:hcp-a3)
Names (4): _corpus: _corpus:phase:cu-la:hcp-a3
_tdb: _tdb:CuLa-12An.tdb:HCP_A3, tdb:CuLa-89Qi.tdb:HCP_A3, tdb:CuLa-99Du.tdb:HCP_A3
### TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): HCP_A3, type code %A, sha256 `96d6ecf2e7f37b9c…`
~~~~text
39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : CU : VA : !
~~~~
[CuLa-89Qi.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-89Qi.tdb): HCP_A3, type code %A, sha256 `c0ed7e9c7856491b…`
~~~~text
38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : CU : VA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): HCP_A3, type code %A, sha256 `41bc14252d38c854…`
~~~~text
37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : CU : VA : !
~~~~
Example references (3 of 3; assessments first):
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase_
- [doi:10.1515/ijmr-1989-801206](https://doi.org/10.1515/ijmr-1989-801206) G. Qi, K. Itagaki, S. an Mey, P.J. Spencer, Z. Metallkd., 80, 883-87(1989).
_assessment that models this phase_
## LIQUID (Cu–La)
- Id: `phase:cu-la:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 3 of 3 calculated diagram(s): 747.98–2500 K, x(La) 0–1
- Literature: 22 values (22 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-la:liquid)
Names (5): _corpus: _corpus:phase:cu-la:liquid
_paper: _paper:10.1016/s0925-8388(99)00080-8:L
_tdb: _tdb:CuLa-12An.tdb:LIQUID, tdb:CuLa-89Qi.tdb:LIQUID, tdb:CuLa-99Du.tdb:LIQUID
### TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written
[CuLa-12An.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-12An.tdb): LIQUID, type code %, sha256 `96d6ecf2e7f37b9c…`
~~~~text
24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : CU LA : !
~~~~
[CuLa-89Qi.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-89Qi.tdb): LIQUID, type code %, sha256 `c0ed7e9c7856491b…`
~~~~text
23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : CU LA : !
~~~~
[CuLa-99Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuLa-99Du.tdb): LIQUID, type code %, sha256 `41bc14252d38c854…`
~~~~text
22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : CU LA : !
~~~~
Example references (5 of 5; assessments first):
- [doi:10.1016/S0925-8388(99)00080-8](https://doi.org/10.1016/S0925-8388%2899%2900080-8) Z. Du, Y. Xu, W. Zhang, J. Alloys Compd., 289, 88-95(1999).
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2011.10.004](https://doi.org/10.1016/j.calphad.2011.10.004) Xuehui An, Qian Li, Jieyu Zhang, Shuanglin Chen, Ying Yang, Phase equilibria of the La–Ni–Cu ternary system at 673 K: Thermodynamic modeling and experimental validation, Calphad 36, 8-15 (2012).
_assessment that models this phase_
- [doi:10.1515/ijmr-1989-801206](https://doi.org/10.1515/ijmr-1989-801206) G. Qi, K. Itagaki, S. an Mey, P.J. Spencer, Z. Metallkd., 80, 883-87(1989).
_assessment that models this phase_
- [doi:10.1016/0022-5088(77)90104-7](https://doi.org/10.1016/0022-5088%2877%2990104-7) S. Cirafici, A. Palenzona, The lanthanum-copper system, Journal of the Less Common Metals 53, 199-203 (1977).
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(85)90308-x](https://doi.org/10.1016/0022-5088%2885%2990308-x) F. Meyer-Liautaud, C.H. Allibert, J.M. Moreau, New phases in the system LaCu, Journal of the Less Common Metals 110, 81-90 (1985).
_cited as the source of values for this phase_
## Please cite
- R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735970
- 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 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); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work).
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_phase_registry_2026,
author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
title = {{ORCHID-Registry: phase registry of binary systems}},
version = {2026.10},
publisher = {Zenodo},
year = {2026},
doi = {10.5281/zenodo.23735970},
url = {https://doi.org/10.5281/zenodo.23735970},
note = {Version 1, machine-extracted}
}
@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 the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).