# Ni–Tb phases

> Ni–Tb system: 12 phases (tier A 6, tier C 4, liquid 1, needs_review 1); 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/NI-TB.html · Markdown: https://data.orchid-project.org/phases/pages/NI-TB.md

12 phases (tier A 6, tier C 4, liquid 1, needs_review 1); 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=NI-TB) · [full JSON](https://data.orchid-project.org/phases/systems/NI-TB.json) · [Ni–Tb system page](https://data.orchid-project.org/systems/NI-TB.html) · [Markdown](https://data.orchid-project.org/phases/pages/NI-TB.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Ni–Tb system (12)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-ni-tb-bcc-a2); _phase:ni-tb:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 1562–2499.51 K, x(Tb) 0.99971–1 | 2 | 3 |
| [FCC_A1](#phase-ni-tb-fcc-a1); _phase:ni-tb:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1796.93 K, x(Tb) 0–0 | 10 | 3 |
| [HCP_A3](#phase-ni-tb-hcp-a3); _phase:ni-tb:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1562.02 K, x(Tb) 0.99953–1 | 12 | 3 |
| [LIQUID](#phase-ni-tb-liquid); _phase:ni-tb:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 991.93–2500 K, x(Tb) 0–1 | 110 | 3 |
| [NI17TB2](#phase-ni-tb-ni17tb2); _phase:ni-tb:ni17tb2_ | Ni17Th2 · hP38 · P6_3/mmc (194) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1559.64 K, x(Tb) 0.10526–0.10526 | 22 | 3 |
| [NI2TB_C15](#phase-ni-tb-ni2tb-c15); _phase:ni-tb:ni2tb-c15_ | Cu2Mg · C15 · cF24 · Fd-3m (227) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1415.47 K, x(Tb) 0.33333–0.33333 | 22 | 3 |
| [NI2TB3](#phase-ni-tb-ni2tb3); _phase:ni-tb:ni2tb3_ | Dy3Ni2 · mC20 · C2/m (12) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1101.49 K, x(Tb) 0.6–0.6 | 22 | 3 |
| [NI3TB](#phase-ni-tb-ni3tb); _phase:ni-tb:ni3tb_ | Ni3Pu · hR12 · R-3m (166) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1503.58 K, x(Tb) 0.25–0.25 | 22 | 3 |
| [NI5TB_D2D](#phase-ni-tb-ni5tb-d2d); _phase:ni-tb:ni5tb-d2d_ | CaCu5 · D2_d · hP6 · P6/mmm (191) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1663.06 K, x(Tb) 0.16667–0.16667 | 30 | 3 |
| [NI7TB2](#phase-ni-tb-ni7tb2); _phase:ni-tb:ni7tb2_ |  | needs_review | stable in 3 of 3 calculated diagram(s): 300–1565.13 K, x(Tb) 0.22222–0.22222 | 21 | 3 |
| [NITB](#phase-ni-tb-nitb); _phase:ni-tb:nitb_ | NiTb · mP24 · P2_1/m (11) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1266.03 K, x(Tb) 0.5–0.5 | 32 | 3 |
| [NITB3_D011](#phase-ni-tb-nitb3-d011); _phase:ni-tb:nitb3-d011_ | Fe3C · D0_11 · oP16 · Pnma (62) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1061.5 K, x(Tb) 0.75–0.75 | 22 | 3 |

## BCC_A2 (Ni–Tb)

- Id: `phase:ni-tb: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): 1562–2499.51 K, x(Tb) 0.99971–1
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:bcc-a2)

Names (5): _corpus: _corpus:phase:ni-tb:bcc-a2  
_paper: _paper:10.1007/s10853-022-08039-1:bcc(Tb)  
_tdb: _tdb:NiTb-04Ron.tdb:BCC_A2, tdb:NiTb-23Ye.tdb:BCC_A2, tdb:NiTb-24Rah.tdb:BCC_A2  


### TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): BCC_A2, type code %B, sha256 `796cc79d9d9131a6…`

~~~~text
38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : NI TB% : VA : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): BCC_A2, type code %B, sha256 `c5d76ba67dadc803…`

~~~~text
34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : NI TB% : VA : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): BCC_A2, type code %B, sha256 `cd81bfc018e84565…`

~~~~text
35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : NI TB% : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase_

## FCC_A1 (Ni–Tb)

- Id: `phase:ni-tb: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): 300–1796.93 K, x(Tb) 0–0
- Literature: 10 values (10 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:fcc-a1)

Names (7): _corpus: _corpus:phase:ni-tb:fcc-a1  
_paper: _paper:10.1007/s10853-022-08039-1:fcc(Ni), paper:10.1007/s11669-024-01089-9:fcc(Ni), paper:10.1016/s0925-8388(03)00667-4:(Ni)  
_tdb: _tdb:NiTb-04Ron.tdb:FCC_A1, tdb:NiTb-23Ye.tdb:FCC_A1, tdb:NiTb-24Rah.tdb:FCC_A1  


### TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): FCC_A1, type code %A, sha256 `796cc79d9d9131a6…`

~~~~text
33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : NI : VA : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): FCC_A1, type code %A, sha256 `c5d76ba67dadc803…`

~~~~text
29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : NI : VA : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): FCC_A1, type code %A, sha256 `cd81bfc018e84565…`

~~~~text
30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : NI% TB : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_

## HCP_A3 (Ni–Tb)

- Id: `phase:ni-tb:hcp-a3`; status `assigned`
- Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high
- Stability: stable in 3 of 3 calculated diagram(s): 300–1562.02 K, x(Tb) 0.99953–1
- Literature: 12 values (12 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:hcp-a3)

Names (7): _corpus: _corpus:phase:ni-tb:hcp-a3  
_paper: _paper:10.1007/s10853-022-08039-1:hcp(Tb), paper:10.1007/s11669-024-01089-9:α-Tb, paper:10.1016/s0925-8388(03)00667-4:(α-Tb)  
_tdb: _tdb:NiTb-04Ron.tdb:HCP_A3, tdb:NiTb-23Ye.tdb:HCP_A3, tdb:NiTb-24Rah.tdb:HCP_A3  


### TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): HCP_A3, type code %A, sha256 `796cc79d9d9131a6…`

~~~~text
43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : NI TB% : VA : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): HCP_A3, type code %A, sha256 `c5d76ba67dadc803…`

~~~~text
39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : NI TB% : VA : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): HCP_A3, type code %A, sha256 `cd81bfc018e84565…`

~~~~text
40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : NI TB% : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_

## LIQUID (Ni–Tb)

- Id: `phase:ni-tb:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 3 of 3 calculated diagram(s): 991.93–2500 K, x(Tb) 0–1
- Literature: 110 values (110 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:liquid)

Names (7): _corpus: _corpus:phase:ni-tb:liquid  
_paper: _paper:10.1007/s10853-022-08039-1:L, paper:10.1007/s11669-024-01089-9:L, paper:10.1016/s0925-8388(03)00667-4:Liq  
_tdb: _tdb:NiTb-04Ron.tdb:LIQUID, tdb:NiTb-23Ye.tdb:LIQUID, tdb:NiTb-24Rah.tdb:LIQUID  


### TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): LIQUID, type code %, sha256 `796cc79d9d9131a6…`

~~~~text
28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : NI TB : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): LIQUID, type code %, sha256 `c5d76ba67dadc803…`

~~~~text
24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : NI TB : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): LIQUID, type code %, sha256 `cd81bfc018e84565…`

~~~~text
25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : NI TB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_

## NI17TB2 (Ni–Tb)

- Id: `phase:ni-tb:ni17tb2`; status `assigned`
- Structure: Ni17Th2 · hP38 · P6_3/mmc (194); type `st:ni17th2-hp38`; 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: Ni 0.8947, Tb 0.1053
- Stability: stable in 3 of 3 calculated diagram(s): 300–1559.64 K, x(Tb) 0.10526–0.10526
- Literature: 22 values (22 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:ni17tb2)

Names (7): _corpus: _corpus:phase:ni-tb:ni17tb2  
_paper: _paper:10.1007/s10853-022-08039-1:Tb2Ni17, paper:10.1007/s11669-024-01089-9:Tb2Ni17, paper:10.1016/s0925-8388(03)00667-4:Ni17Tb2  
_tdb: _tdb:NiTb-04Ron.tdb:NI17TB2, tdb:NiTb-23Ye.tdb:NI17TB2, tdb:NiTb-24Rah.tdb:NI17TB2  


### TDB models of NI17TB2 (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): NI17TB2, type code %, sha256 `796cc79d9d9131a6…`

~~~~text
48: PHASE NI17TB2 % 2 17 2 !
49: CONST NI17TB2 : NI : TB : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): NI17TB2, type code %, sha256 `c5d76ba67dadc803…`

~~~~text
44: PHASE NI17TB2 % 2 17 2 !
45: CONST NI17TB2 : NI : TB : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): NI17TB2, type code %, sha256 `cd81bfc018e84565…`

~~~~text
45: PHASE NI17TB2 % 2 17 2 !
46: CONST NI17TB2 : NI : TB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_

## NI2TB_C15 (Ni–Tb)

- Id: `phase:ni-tb:ni2tb-c15`; status `assigned`
- Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type `st:c15-cu2mg-cf24`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaaaakq and oqmd-17694, space group 227
- Stoichiometry: Ni 0.6667, Tb 0.3333
- Stability: stable in 3 of 3 calculated diagram(s): 300–1415.47 K, x(Tb) 0.33333–0.33333
- Literature: 22 values (22 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:ni2tb-c15)

Names (9): _corpus: _corpus:phase:ni-tb:ni2tb-c15  
_mp: _mp:mp-aaaaaakq  
_oqmd: _oqmd:oqmd-17694  
_paper: _paper:10.1007/s10853-022-08039-1:TbNi2, paper:10.1007/s11669-024-01089-9:TbNi2, paper:10.1016/s0925-8388(03)00667-4:Ni2Tb  
_tdb: _tdb:NiTb-04Ron.tdb:NI2TB_C15, tdb:NiTb-23Ye.tdb:NI2TB_C15, tdb:NiTb-24Rah.tdb:NI2TB_C15  


### TDB models of NI2TB_C15 (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): NI2TB_C15, type code %, sha256 `796cc79d9d9131a6…`

~~~~text
68: PHASE NI2TB_C15 % 2 2 1 !
69: CONST NI2TB_C15 : NI : TB : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): NI2TB_C15, type code %, sha256 `c5d76ba67dadc803…`

~~~~text
64: PHASE NI2TB_C15 % 2 2 1 !
65: CONST NI2TB_C15 : NI : TB : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): NI2TB_C15, type code %, sha256 `cd81bfc018e84565…`

~~~~text
65: PHASE NI2TB_C15 % 2 2 1 !
66: CONST NI2TB_C15 : NI : TB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_

## NI2TB3 (Ni–Tb)

- Id: `phase:ni-tb:ni2tb3`; status `assigned`
- Structure: Dy3Ni2 · mC20 · C2/m (12); type `st:dy3ni2-mc20`; 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: Ni 0.4000, Tb 0.6000
- Stability: stable in 3 of 3 calculated diagram(s): 300–1101.49 K, x(Tb) 0.6–0.6
- Literature: 22 values (22 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:ni2tb3)

Names (7): _corpus: _corpus:phase:ni-tb:ni2tb3  
_paper: _paper:10.1007/s10853-022-08039-1:Tb3Ni2, paper:10.1007/s11669-024-01089-9:Tb3Ni2, paper:10.1016/s0925-8388(03)00667-4:Ni2Tb3  
_tdb: _tdb:NiTb-04Ron.tdb:NI2TB3, tdb:NiTb-23Ye.tdb:NI2TB3, tdb:NiTb-24Rah.tdb:NI2TB3  


### TDB models of NI2TB3 (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): NI2TB3, type code %, sha256 `796cc79d9d9131a6…`

~~~~text
78: PHASE NI2TB3 % 2 2 3 !
79: CONST NI2TB3 : NI : TB : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): NI2TB3, type code %, sha256 `c5d76ba67dadc803…`

~~~~text
74: PHASE NI2TB3 % 2 2 3 !
75: CONST NI2TB3 : NI : TB : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): NI2TB3, type code %, sha256 `cd81bfc018e84565…`

~~~~text
75: PHASE NI2TB3 % 2 2 3 !
76: CONST NI2TB3 : NI : TB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_

## NI3TB (Ni–Tb)

- Id: `phase:ni-tb:ni3tb`; status `assigned`
- Structure: Ni3Pu · hR12 · R-3m (166); type `st:ni3pu-hr12`; 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 (dft_space_group_166_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Ni 0.7500, Tb 0.2500
- Stability: stable in 3 of 3 calculated diagram(s): 300–1503.58 K, x(Tb) 0.25–0.25
- Literature: 22 values (22 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:ni3tb)

Names (7): _corpus: _corpus:phase:ni-tb:ni3tb  
_paper: _paper:10.1007/s10853-022-08039-1:TbNi3, paper:10.1007/s11669-024-01089-9:TbNi3, paper:10.1016/s0925-8388(03)00667-4:Ni3Tb  
_tdb: _tdb:NiTb-04Ron.tdb:NI3TB, tdb:NiTb-23Ye.tdb:NI3TB, tdb:NiTb-24Rah.tdb:NI3TB  


### TDB models of NI3TB (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): NI3TB, type code %, sha256 `796cc79d9d9131a6…`

~~~~text
63: PHASE NI3TB % 2 3 1 !
64: CONST NI3TB : NI : TB : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): NI3TB, type code %, sha256 `c5d76ba67dadc803…`

~~~~text
59: PHASE NI3TB % 2 3 1 !
60: CONST NI3TB : NI : TB : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): NI3TB, type code %, sha256 `cd81bfc018e84565…`

~~~~text
60: PHASE NI3TB % 2 3 1 !
61: CONST NI3TB : NI : TB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_

## NI5TB_D2D (Ni–Tb)

- Id: `phase:ni-tb:ni5tb-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-aaaabtoy and oqmd-17834, space group 191
- Stoichiometry: Ni 0.8333, Tb 0.1667
- Stability: stable in 3 of 3 calculated diagram(s): 300–1663.06 K, x(Tb) 0.16667–0.16667
- Literature: 30 values (30 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:ni5tb-d2d)

Names (9): _corpus: _corpus:phase:ni-tb:ni5tb-d2d  
_mp: _mp:mp-aaaabtoy  
_oqmd: _oqmd:oqmd-17834  
_paper: _paper:10.1007/s10853-022-08039-1:TbNi5, paper:10.1007/s11669-024-01089-9:TbNi5, paper:10.1016/s0925-8388(03)00667-4:Ni5Tb  
_tdb: _tdb:NiTb-04Ron.tdb:NI5TB_D2D, tdb:NiTb-23Ye.tdb:NI5TB_D2D, tdb:NiTb-24Rah.tdb:NI5TB_D2D  


### TDB models of NI5TB_D2D (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): NI5TB_D2D, type code %, sha256 `796cc79d9d9131a6…`

~~~~text
53: PHASE NI5TB_D2D % 2 5 1 !
54: CONST NI5TB_D2D : NI : TB : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): NI5TB_D2D, type code %, sha256 `c5d76ba67dadc803…`

~~~~text
49: PHASE NI5TB_D2D % 2 5 1 !
50: CONST NI5TB_D2D : NI : TB : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): NI5TB_D2D, type code %, sha256 `cd81bfc018e84565…`

~~~~text
50: PHASE NI5TB_D2D % 2 5 1 !
51: CONST NI5TB_D2D : NI : TB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_

## NI7TB2 (Ni–Tb)

- Id: `phase:ni-tb:ni7tb2`; status `needs_review`
- No structure assigned. Why: no_structure_token; sgte_mmc2_row_disagrees_with_dft; sgte_mmc2_rows_disagree
- Candidate (dft_mp): R-3m (166) — on-hull MP Tb2Ni7 at x(TB)=0.2222
- Candidate (dft_oqmd): R-3m (166) — on-hull OQMD Ni7 Tb2 at x(TB)=0.2222
- Candidate (literature_printed): Ce2Ni7 · hP36 — printed with a label mapped to this phase
- Candidate (sgte_mmc2): Ce2Ni7 · hP36 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for NI7TB2: Ni7Tb2, see also Co7Gd2
- Candidate (sgte_mmc2): Co7Gd2 · hR18 · R-3m (166) — Hallstedt 2025 mmc2 row for NI7TB2: Ni7Tb2, see also Ce2Ni7
- Candidate (tdb_comment): Ce2Ni7 · hP36 · P6_3/mmc — NiTb-04Ron.tdb: 'Prototype Ce2Ni7 (hP36, P6_3/mmc) and Co7Gd2 (hR18, R-3m)'
- Candidate (tdb_comment): Ce2Ni7 · hP36 · P6_3/mmc — NiTb-23Ye.tdb: 'Prototype Ce2Ni7 (hP36, P6_3/mmc) and Co7Gd2 (hR18, R-3m)'
- Candidate (tdb_comment): Ce2Ni7 · hP36 · P6_3/mmc — NiTb-24Rah.tdb: 'Prototype Ce2Ni7 (hP36, P6_3/mmc) and Co7Gd2 (hR18, R-3m)'
- Stoichiometry: Ni 0.7778, Tb 0.2222
- Stability: stable in 3 of 3 calculated diagram(s): 300–1565.13 K, x(Tb) 0.22222–0.22222
- Literature: 21 values (21 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:ni7tb2)

Names (7): _corpus: _corpus:phase:ni-tb:ni7tb2  
_paper: _paper:10.1007/s10853-022-08039-1:Tb2Ni7, paper:10.1007/s11669-024-01089-9:Tb2Ni7, paper:10.1016/s0925-8388(03)00667-4:Ni7Tb2  
_tdb: _tdb:NiTb-04Ron.tdb:NI7TB2, tdb:NiTb-23Ye.tdb:NI7TB2, tdb:NiTb-24Rah.tdb:NI7TB2  


### TDB models of NI7TB2 (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): NI7TB2, type code %, sha256 `796cc79d9d9131a6…`

~~~~text
58: PHASE NI7TB2 % 2 7 2 !
59: CONST NI7TB2 : NI : TB : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): NI7TB2, type code %, sha256 `c5d76ba67dadc803…`

~~~~text
54: PHASE NI7TB2 % 2 7 2 !
55: CONST NI7TB2 : NI : TB : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): NI7TB2, type code %, sha256 `cd81bfc018e84565…`

~~~~text
55: PHASE NI7TB2 % 2 7 2 !
56: CONST NI7TB2 : NI : TB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_
- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_

## NITB (Ni–Tb)

- Id: `phase:ni-tb:nitb`; status `assigned`
- Structure: NiTb · mP24 · P2_1/m (11); type `st:nitb-mp24`; 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_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Ni 0.5000, Tb 0.5000
- Stability: stable in 3 of 3 calculated diagram(s): 300–1266.03 K, x(Tb) 0.5–0.5
- Literature: 32 values (32 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:nitb)

Names (7): _corpus: _corpus:phase:ni-tb:nitb  
_paper: _paper:10.1007/s10853-022-08039-1:TbNi, paper:10.1007/s11669-024-01089-9:TbNi, paper:10.1016/s0925-8388(03)00667-4:NiTb  
_tdb: _tdb:NiTb-04Ron.tdb:NITB, tdb:NiTb-23Ye.tdb:NITB, tdb:NiTb-24Rah.tdb:NITB  


### TDB models of NITB (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): NITB, type code %, sha256 `796cc79d9d9131a6…`

~~~~text
73: PHASE NITB % 2 1 1 !
74: CONST NITB : NI : TB : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): NITB, type code %, sha256 `c5d76ba67dadc803…`

~~~~text
69: PHASE NITB % 2 1 1 !
70: CONST NITB : NI : TB : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): NITB, type code %, sha256 `cd81bfc018e84565…`

~~~~text
70: PHASE NITB % 2 1 1 !
71: CONST NITB : NI : TB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase; cited as the source of values for this phase; reports values for this phase_

## NITB3_D011 (Ni–Tb)

- Id: `phase:ni-tb:nitb3-d011`; status `assigned`
- Structure: Fe3C · D0_11 · oP16 · Pnma (62); type `st:d0-11-fe3c-op16`; tier A: standard phase name; confidence high
- Stoichiometry: Ni 0.2500, Tb 0.7500
- Stability: stable in 3 of 3 calculated diagram(s): 300–1061.5 K, x(Tb) 0.75–0.75
- Literature: 22 values (22 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-tb:nitb3-d011)

Names (7): _corpus: _corpus:phase:ni-tb:nitb3-d011  
_paper: _paper:10.1007/s10853-022-08039-1:Tb3Ni, paper:10.1007/s11669-024-01089-9:Tb3Ni, paper:10.1016/s0925-8388(03)00667-4:NiTb3  
_tdb: _tdb:NiTb-04Ron.tdb:NITB3_D011, tdb:NiTb-23Ye.tdb:NITB3_D011, tdb:NiTb-24Rah.tdb:NITB3_D011  


### TDB models of NITB3_D011 (3): PHASE and CONSTITUENT statements as written

[NiTb-04Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-04Ron.tdb): NITB3_D011, type code %, sha256 `796cc79d9d9131a6…`

~~~~text
83: PHASE NITB3_D011 % 2 1 3 !
84: CONST NITB3_D011 : NI : TB : !
~~~~

[NiTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-23Ye.tdb): NITB3_D011, type code %, sha256 `c5d76ba67dadc803…`

~~~~text
79: PHASE NITB3_D011 % 2 1 3 !
80: CONST NITB3_D011 : NI : TB : !
~~~~

[NiTb-24Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiTb-24Rah.tdb): NITB3_D011, type code %, sha256 `cd81bfc018e84565…`

~~~~text
80: PHASE NITB3_D011 % 2 1 3 !
81: CONST NITB3_D011 : NI : TB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10853-022-08039-1](https://doi.org/10.1007/s10853-022-08039-1) Hongjian Ye, Maohua Rong, Qingrong Yao, Qing Chen, Jiang Wang, Guanghui Rao et al., Phase equilibria and thermodynamic properties in the RE-Ni (RE = rare earth metals) binary systems, J Mater Sci 58, 1260-1292 (2023).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s11669-024-01089-9](https://doi.org/10.1007/s11669-024-01089-9) Z. Rahou, D. Moustaine, Y. Ben-Ali, A. Hallaoui, CALPHAD-Based Thermodynamic Reassessment of Tb-Ni Binary System Supported by Ab-Initio Calculations, J. Phase Equilib. Diffus. 45, 75-85 (2024).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0925-8388(03)00667-4](https://doi.org/10.1016/S0925-8388%2803%2900667-4) Q. Rong, H.-J. Schaller, J. Alloys Compd., 365, 188-96(2004).  
_assessment that models this phase; cited as the source of values for this phase; reports 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).