# Fe–Tb phases

> Fe–Tb system: 8 phases (tier A 5, tier C 2, liquid 1); 8 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/FE-TB.html · Markdown: https://data.orchid-project.org/phases/pages/FE-TB.md

8 phases (tier A 5, tier C 2, liquid 1); 8 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=FE-TB) · [full JSON](https://data.orchid-project.org/phases/systems/FE-TB.json) · [Fe–Tb system page](https://data.orchid-project.org/systems/FE-TB.html) · [Markdown](https://data.orchid-project.org/phases/pages/FE-TB.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Fe–Tb system (8)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-fe-tb-bcc-a2); _phase:fe-tb:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–2499.63 K, x(Tb) 0–1 | 0 | 3 |
| [FCC_A1](#phase-fe-tb-fcc-a1); _phase:fe-tb:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 1169.93–1742.36 K, x(Tb) 0–0.0028 | 0 | 3 |
| [FE17TB2](#phase-fe-tb-fe17tb2); _phase:fe-tb:fe17tb2_ | Ni17Th2 · hP38 · P6_3/mmc (194) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1587.21 K, x(Tb) 0.10526–0.10526 | 21 | 3 |
| [FE23TB6_D8A](#phase-fe-tb-fe23tb6-d8a); _phase:fe-tb:fe23tb6-d8a_ | Mn23Th6 · D8_a · cF116 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1561 K, x(Tb) 0.2069–0.2069 | 0 | 3 |
| [FE2TB_C15](#phase-fe-tb-fe2tb-c15); _phase:fe-tb:fe2tb-c15_ | Cu2Mg · C15 · cF24 · Fd-3m (227) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1461.48 K, x(Tb) 0.33333–0.33333 | 0 | 3 |
| [FE3TB](#phase-fe-tb-fe3tb); _phase:fe-tb:fe3tb_ | Ni3Pu · hR12 · R-3m (166) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1485.39 K, x(Tb) 0.25–0.25 | 11 | 3 |
| [HCP_A3](#phase-fe-tb-hcp-a3); _phase:fe-tb:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1627 K, x(Tb) 0.99798–1 | 0 | 3 |
| [LIQUID](#phase-fe-tb-liquid); _phase:fe-tb:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 1116.04–2500 K, x(Tb) 0–1 | 6 | 3 |

## BCC_A2 (Fe–Tb)

- Id: `phase:fe-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): 300–2499.63 K, x(Tb) 0–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-tb:bcc-a2)

Names (4): _corpus: _corpus:phase:fe-tb:bcc-a2  
_tdb: _tdb:FeTb-17Ron.tdb:BCC_A2, tdb:FeTb-23Ye.tdb:BCC_A2, tdb:FeTb-94Lan.tdb:BCC_A2  


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

[FeTb-17Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-17Ron.tdb): BCC_A2, type code %B, sha256 `46346f5bff319295…`

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

[FeTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-23Ye.tdb): BCC_A2, type code %B, sha256 `0eb2e62ea5c9bc11…`

~~~~text
36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : FE TB : VA : !
~~~~

[FeTb-94Lan.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-94Lan.tdb): BCC_A2, type code %B, sha256 `4276274a275273a7…`

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

Example references (2 of 2; assessments first): 

- [doi:10.1016/0925-8388(94)90261-5](https://doi.org/10.1016/0925-8388%2894%2990261-5) S. Landin, J. Agren, J. Alloys Compd., 207-208, 449-53(1994).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2017.10.003](https://doi.org/10.1016/j.calphad.2017.10.003) M.H. Rong, X.L. Chen, J. Wang, G.H. Rao, H.Y. Zhou, Calphad, 59, 154-63(2017).  
_assessment that models this phase_

## FCC_A1 (Fe–Tb)

- Id: `phase:fe-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): 1169.93–1742.36 K, x(Tb) 0–0.0028
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-tb:fcc-a1)

Names (4): _corpus: _corpus:phase:fe-tb:fcc-a1  
_tdb: _tdb:FeTb-17Ron.tdb:FCC_A1, tdb:FeTb-23Ye.tdb:FCC_A1, tdb:FeTb-94Lan.tdb:FCC_A1  


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

[FeTb-17Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-17Ron.tdb): FCC_A1, type code %A, sha256 `46346f5bff319295…`

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

[FeTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-23Ye.tdb): FCC_A1, type code %A, sha256 `0eb2e62ea5c9bc11…`

~~~~text
31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : FE% TB : VA : !
~~~~

[FeTb-94Lan.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-94Lan.tdb): FCC_A1, type code %A, sha256 `4276274a275273a7…`

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

Example references (2 of 2; assessments first): 

- [doi:10.1016/0925-8388(94)90261-5](https://doi.org/10.1016/0925-8388%2894%2990261-5) S. Landin, J. Agren, J. Alloys Compd., 207-208, 449-53(1994).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2017.10.003](https://doi.org/10.1016/j.calphad.2017.10.003) M.H. Rong, X.L. Chen, J. Wang, G.H. Rao, H.Y. Zhou, Calphad, 59, 154-63(2017).  
_assessment that models this phase_

## FE17TB2 (Fe–Tb)

- Id: `phase:fe-tb:fe17tb2`; 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: Fe 0.8947, Tb 0.1053
- Stability: stable in 3 of 3 calculated diagram(s): 300–1587.21 K, x(Tb) 0.10526–0.10526
- Literature: 21 values (21 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-tb:fe17tb2)

Names (5): _corpus: _corpus:phase:fe-tb:fe17tb2  
_paper: _paper:10.20517/jmi.2023.08:Fe17Tb2  
_tdb: _tdb:FeTb-17Ron.tdb:FE17TB2, tdb:FeTb-23Ye.tdb:FE17TB2, tdb:FeTb-94Lan.tdb:FE17TB2  


### TDB models of FE17TB2 (3): PHASE and CONSTITUENT statements as written

[FeTb-17Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-17Ron.tdb): FE17TB2, type code %, sha256 `46346f5bff319295…`

~~~~text
44: PHASE FE17TB2 % 2 17 2 !
45: CONST FE17TB2 : FE : TB : !
~~~~

[FeTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-23Ye.tdb): FE17TB2, type code %, sha256 `0eb2e62ea5c9bc11…`

~~~~text
46: PHASE FE17TB2 % 2 17 2 !
47: CONST FE17TB2 : FE : TB : !
~~~~

[FeTb-94Lan.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-94Lan.tdb): FE17TB2, type code %, sha256 `4276274a275273a7…`

~~~~text
45: PHASE FE17TB2 % 2 17 2 !
46: CONST FE17TB2 : FE : TB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/0925-8388(94)90261-5](https://doi.org/10.1016/0925-8388%2894%2990261-5) S. Landin, J. Agren, J. Alloys Compd., 207-208, 449-53(1994).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2017.10.003](https://doi.org/10.1016/j.calphad.2017.10.003) M.H. Rong, X.L. Chen, J. Wang, G.H. Rao, H.Y. Zhou, Calphad, 59, 154-63(2017).  
_assessment that models this phase_
- [doi:10.20517/jmi.2023.08](https://doi.org/10.20517/jmi.2023.08) Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023).  
_reports values for this phase_

## FE23TB6_D8A (Fe–Tb)

- Id: `phase:fe-tb:fe23tb6-d8a`; status `assigned`
- Structure: Mn23Th6 · D8_a · cF116 · Fm-3m (225); type `st:d8-a-mn23th6-cf116`; tier A: standard phase name; confidence high
- Stoichiometry: Fe 0.7931, Tb 0.2069
- Stability: stable in 3 of 3 calculated diagram(s): 300–1561 K, x(Tb) 0.2069–0.2069
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-tb:fe23tb6-d8a)

Names (4): _corpus: _corpus:phase:fe-tb:fe23tb6-d8a  
_tdb: _tdb:FeTb-17Ron.tdb:FE23TB6_D8A, tdb:FeTb-23Ye.tdb:FE23TB6_D8A, tdb:FeTb-94Lan.tdb:FE23TB6_D8A  


### TDB models of FE23TB6_D8A (3): PHASE and CONSTITUENT statements as written

[FeTb-17Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-17Ron.tdb): FE23TB6_D8A, type code %, sha256 `46346f5bff319295…`

~~~~text
49: PHASE FE23TB6_D8A % 2 23 6 !
50: CONST FE23TB6_D8A : FE : TB : !
~~~~

[FeTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-23Ye.tdb): FE23TB6_D8A, type code %, sha256 `0eb2e62ea5c9bc11…`

~~~~text
51: PHASE FE23TB6_D8A % 2 23 6 !
52: CONST FE23TB6_D8A : FE : TB : !
~~~~

[FeTb-94Lan.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-94Lan.tdb): FE23TB6_D8A, type code %, sha256 `4276274a275273a7…`

~~~~text
50: PHASE FE23TB6_D8A % 2 23 6 !
51: CONST FE23TB6_D8A : FE : TB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/0925-8388(94)90261-5](https://doi.org/10.1016/0925-8388%2894%2990261-5) S. Landin, J. Agren, J. Alloys Compd., 207-208, 449-53(1994).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2017.10.003](https://doi.org/10.1016/j.calphad.2017.10.003) M.H. Rong, X.L. Chen, J. Wang, G.H. Rao, H.Y. Zhou, Calphad, 59, 154-63(2017).  
_assessment that models this phase_

## FE2TB_C15 (Fe–Tb)

- Id: `phase:fe-tb:fe2tb-c15`; status `assigned`
- Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type `st:c15-cu2mg-cf24`; tier A: standard phase name; confidence high
- Stoichiometry: Fe 0.6667, Tb 0.3333
- Stability: stable in 3 of 3 calculated diagram(s): 300–1461.48 K, x(Tb) 0.33333–0.33333
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-tb:fe2tb-c15)

Names (4): _corpus: _corpus:phase:fe-tb:fe2tb-c15  
_tdb: _tdb:FeTb-17Ron.tdb:FE2TB_C15, tdb:FeTb-23Ye.tdb:FE2TB_C15, tdb:FeTb-94Lan.tdb:FE2TB_C15  


### TDB models of FE2TB_C15 (3): PHASE and CONSTITUENT statements as written

[FeTb-17Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-17Ron.tdb): FE2TB_C15, type code %, sha256 `46346f5bff319295…`

~~~~text
59: PHASE FE2TB_C15 % 2 2 1 !
60: CONST FE2TB_C15 : FE : TB : !
~~~~

[FeTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-23Ye.tdb): FE2TB_C15, type code %, sha256 `0eb2e62ea5c9bc11…`

~~~~text
61: PHASE FE2TB_C15 % 2 2 1 !
62: CONST FE2TB_C15 : FE : TB : !
~~~~

[FeTb-94Lan.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-94Lan.tdb): FE2TB_C15, type code %, sha256 `4276274a275273a7…`

~~~~text
60: PHASE FE2TB_C15 % 2 2 1 !
61: CONST FE2TB_C15 : FE : TB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/0925-8388(94)90261-5](https://doi.org/10.1016/0925-8388%2894%2990261-5) S. Landin, J. Agren, J. Alloys Compd., 207-208, 449-53(1994).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2017.10.003](https://doi.org/10.1016/j.calphad.2017.10.003) M.H. Rong, X.L. Chen, J. Wang, G.H. Rao, H.Y. Zhou, Calphad, 59, 154-63(2017).  
_assessment that models this phase_

## FE3TB (Fe–Tb)

- Id: `phase:fe-tb:fe3tb`; 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 (no_on_hull_entry_in_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Fe 0.7500, Tb 0.2500
- Stability: stable in 3 of 3 calculated diagram(s): 300–1485.39 K, x(Tb) 0.25–0.25
- Literature: 11 values (11 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-tb:fe3tb)

Names (5): _corpus: _corpus:phase:fe-tb:fe3tb  
_paper: _paper:10.20517/jmi.2023.08:Fe3Tb  
_tdb: _tdb:FeTb-17Ron.tdb:FE3TB, tdb:FeTb-23Ye.tdb:FE3TB, tdb:FeTb-94Lan.tdb:FE3TB  


### TDB models of FE3TB (3): PHASE and CONSTITUENT statements as written

[FeTb-17Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-17Ron.tdb): FE3TB, type code %, sha256 `46346f5bff319295…`

~~~~text
54: PHASE FE3TB % 2 3 1 !
55: CONST FE3TB : FE : TB : !
~~~~

[FeTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-23Ye.tdb): FE3TB, type code %, sha256 `0eb2e62ea5c9bc11…`

~~~~text
56: PHASE FE3TB % 2 3 1 !
57: CONST FE3TB : FE : TB : !
~~~~

[FeTb-94Lan.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-94Lan.tdb): FE3TB, type code %, sha256 `4276274a275273a7…`

~~~~text
55: PHASE FE3TB % 2 3 1 !
56: CONST FE3TB : FE : TB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/0925-8388(94)90261-5](https://doi.org/10.1016/0925-8388%2894%2990261-5) S. Landin, J. Agren, J. Alloys Compd., 207-208, 449-53(1994).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2017.10.003](https://doi.org/10.1016/j.calphad.2017.10.003) M.H. Rong, X.L. Chen, J. Wang, G.H. Rao, H.Y. Zhou, Calphad, 59, 154-63(2017).  
_assessment that models this phase_
- [doi:10.20517/jmi.2023.08](https://doi.org/10.20517/jmi.2023.08) Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023).  
_reports values for this phase_

## HCP_A3 (Fe–Tb)

- Id: `phase:fe-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): 300–1627 K, x(Tb) 0.99798–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-tb:hcp-a3)

Names (4): _corpus: _corpus:phase:fe-tb:hcp-a3  
_tdb: _tdb:FeTb-17Ron.tdb:HCP_A3, tdb:FeTb-23Ye.tdb:HCP_A3, tdb:FeTb-94Lan.tdb:HCP_A3  


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

[FeTb-17Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-17Ron.tdb): HCP_A3, type code %, sha256 `46346f5bff319295…`

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

[FeTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-23Ye.tdb): HCP_A3, type code %, sha256 `0eb2e62ea5c9bc11…`

~~~~text
41: PHASE HCP_A3 % 2 1 0.5 !
42: CONST HCP_A3 : FE TB% : VA : !
~~~~

[FeTb-94Lan.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-94Lan.tdb): HCP_A3, type code %, sha256 `4276274a275273a7…`

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

Example references (2 of 2; assessments first): 

- [doi:10.1016/0925-8388(94)90261-5](https://doi.org/10.1016/0925-8388%2894%2990261-5) S. Landin, J. Agren, J. Alloys Compd., 207-208, 449-53(1994).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2017.10.003](https://doi.org/10.1016/j.calphad.2017.10.003) M.H. Rong, X.L. Chen, J. Wang, G.H. Rao, H.Y. Zhou, Calphad, 59, 154-63(2017).  
_assessment that models this phase_

## LIQUID (Fe–Tb)

- Id: `phase:fe-tb:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 3 of 3 calculated diagram(s): 1116.04–2500 K, x(Tb) 0–1
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-tb:liquid)

Names (5): _corpus: _corpus:phase:fe-tb:liquid  
_paper: _paper:10.20517/jmi.2023.08:L  
_tdb: _tdb:FeTb-17Ron.tdb:LIQUID, tdb:FeTb-23Ye.tdb:LIQUID, tdb:FeTb-94Lan.tdb:LIQUID  


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

[FeTb-17Ron.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-17Ron.tdb): LIQUID, type code %, sha256 `46346f5bff319295…`

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

[FeTb-23Ye.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-23Ye.tdb): LIQUID, type code %, sha256 `0eb2e62ea5c9bc11…`

~~~~text
26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : FE TB : !
~~~~

[FeTb-94Lan.tdb](https://orchid-project.org/data/databases/sgte-binary/FeTb-94Lan.tdb): LIQUID, type code %, sha256 `4276274a275273a7…`

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

Example references (3 of 3; assessments first): 

- [doi:10.1016/0925-8388(94)90261-5](https://doi.org/10.1016/0925-8388%2894%2990261-5) S. Landin, J. Agren, J. Alloys Compd., 207-208, 449-53(1994).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2017.10.003](https://doi.org/10.1016/j.calphad.2017.10.003) M.H. Rong, X.L. Chen, J. Wang, G.H. Rao, H.Y. Zhou, Calphad, 59, 154-63(2017).  
_assessment that models this phase_
- [doi:10.20517/jmi.2023.08](https://doi.org/10.20517/jmi.2023.08) Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023).  
_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).