# Gd–Ni phases

> Gd–Ni system: 14 phases (tier A 7, tier C 3, liquid 1, needs_review 3); 14 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/GD-NI.html · Markdown: https://data.orchid-project.org/phases/pages/GD-NI.md

14 phases (tier A 7, tier C 3, liquid 1, needs_review 3); 14 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=GD-NI) · [full JSON](https://data.orchid-project.org/phases/systems/GD-NI.json) · [Gd–Ni system page](https://data.orchid-project.org/systems/GD-NI.html) · [Markdown](https://data.orchid-project.org/phases/pages/GD-NI.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Gd–Ni system (14)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-gd-ni-bcc-a2); _phase:gd-ni:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 1508.26–1587 K, x(Ni) 0–0.00122 | 1 | 3 |
| [FCC_A1](#phase-gd-ni-fcc-a1); _phase:gd-ni:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–2499.42 K, x(Ni) 0.99983–1 | 5 | 3 |
| [GD2NI17](#phase-gd-ni-gd2ni17); _phase:gd-ni:gd2ni17_ | Ni17Th2 · hP38 · P6_3/mmc (194) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1557.06 K, x(Ni) 0.89474–0.89474 | 10 | 3 |
| [GD2NI7](#phase-gd-ni-gd2ni7); _phase:gd-ni:gd2ni7_ |  | needs_review | stable in 3 of 3 calculated diagram(s): 300–1532.2 K, x(Ni) 0.77778–0.77778 | 10 | 3 |
| [GD3NI_HT](#phase-gd-ni-gd3ni); _phase:gd-ni:gd3ni_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 910.71–1038.62 K, x(Ni) 0.25–0.25 | 9 | 1 |
| [GD3NI_D011](#phase-gd-ni-gd3ni-d011); _phase:gd-ni:gd3ni-d011_ | Fe3C · D0_11 · oP16 · Pnma (62) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1006.66 K, x(Ni) 0.25–0.25 | 2 | 3 |
| [GD3NI2](#phase-gd-ni-gd3ni2); _phase:gd-ni:gd3ni2_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 300–961.3 K, x(Ni) 0.4–0.4 | 0 | 2 |
| [GDNI_B33](#phase-gd-ni-gdni-b33); _phase:gd-ni:gdni-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1551.72 K, x(Ni) 0.5–0.5 | 11 | 3 |
| [GDNI2_C15](#phase-gd-ni-gdni2-c15); _phase:gd-ni:gdni2-c15_ | Cu2Mg · C15 · cF24 · Fd-3m (227) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1349.39 K, x(Ni) 0.66667–0.66667 | 10 | 3 |
| [GDNI3](#phase-gd-ni-gdni3); _phase:gd-ni:gdni3_ | Ni3Pu · hR12 · R-3m (166) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1494.63 K, x(Ni) 0.75–0.75 | 10 | 3 |
| [GDNI4](#phase-gd-ni-gdni4); _phase:gd-ni:gdni4_ | Co19Sm5 · hP48 · P6_3/mmc (194) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1540.66 K, x(Ni) 0.8–0.8 | 0 | 2 |
| [GDNI5_D2D](#phase-gd-ni-gdni5-d2d); _phase:gd-ni:gdni5-d2d_ | CaCu5 · D2_d · hP6 · P6/mmm (191) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1751.79 K, x(Ni) 0.83333–0.83333 | 14 | 3 |
| [HCP_A3](#phase-gd-ni-hcp-a3); _phase:gd-ni:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1535.04 K, x(Ni) 0–0.00206 | 5 | 3 |
| [LIQUID](#phase-gd-ni-liquid); _phase:gd-ni:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 875.72–2500 K, x(Ni) 0–1 | 46 | 3 |

## BCC_A2 (Gd–Ni)

- Id: `phase:gd-ni: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): 1508.26–1587 K, x(Ni) 0–0.00122
- Literature: 1 values (1 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:bcc-a2)

Names (5): _corpus: _corpus:phase:gd-ni:bcc-a2  
_paper: _paper:10.1016/j.jallcom.2006.09.068:bcc (Gd)  
_tdb: _tdb:GdNi-15Rah.tdb:BCC_A2, tdb:GdNi-96Su-oldGd.tdb:BCC_A2, tdb:GdNi-96Su.tdb:BCC_A2  


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

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): BCC_A2, type code %B, sha256 `8a33fefaa05b5cf5…`

~~~~text
36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : GD% NI : VA : !
~~~~

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): BCC_A2, type code %B, sha256 `60b9fc181cb2901a…`

~~~~text
44: PHASE BCC_A2 %B 2 1 3 !
45: CONST BCC_A2 : GD% NI : VA : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): BCC_A2, type code %B, sha256 `3dc05d2093b96cfd…`

~~~~text
41: PHASE BCC_A2 %B 2 1 3 !
42: CONST BCC_A2 : GD% NI : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2006.09.068](https://doi.org/10.1016/j.jallcom.2006.09.068) Mianliang Huang, Deborah L. Schlagel, Frederick A. Schmidt, Thomas A. Lograsso, Experimental investigation and thermodynamic modeling of the Gd–Si system, Journal of Alloys and Compounds 441, 94-100 (2007).  
_reports values for this phase_

## FCC_A1 (Gd–Ni)

- Id: `phase:gd-ni: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): 300–2499.42 K, x(Ni) 0.99983–1
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:fcc-a1)

Names (5): _corpus: _corpus:phase:gd-ni:fcc-a1  
_paper: _paper:10.1016/j.jallcom.2015.06.201:Ni  
_tdb: _tdb:GdNi-15Rah.tdb:FCC_A1, tdb:GdNi-96Su-oldGd.tdb:FCC_A1, tdb:GdNi-96Su.tdb:FCC_A1  


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

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): FCC_A1, type code %A, sha256 `8a33fefaa05b5cf5…`

~~~~text
31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : GD NI% : VA : !
~~~~

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): FCC_A1, type code %A, sha256 `60b9fc181cb2901a…`

~~~~text
39: PHASE FCC_A1 %A 2 1 1 !
40: CONST FCC_A1 : GD NI% : VA : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): FCC_A1, type code %A, sha256 `3dc05d2093b96cfd…`

~~~~text
36: PHASE FCC_A1 %A 2 1 1 !
37: CONST FCC_A1 : GD NI% : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1002/bbpc.19981020918](https://doi.org/10.1002/bbpc.19981020918) J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).  
_cited as the source of values for this phase_
- [doi:10.3139/146.110756](https://doi.org/10.3139/146.110756) Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).  
_cited as the source of values for this phase_

## GD2NI17 (Gd–Ni)

- Id: `phase:gd-ni:gd2ni17`; 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: Gd 0.1053, Ni 0.8947
- Stability: stable in 3 of 3 calculated diagram(s): 300–1557.06 K, x(Ni) 0.89474–0.89474
- Literature: 10 values (10 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:gd2ni17)

Names (5): _corpus: _corpus:phase:gd-ni:gd2ni17  
_paper: _paper:10.1016/j.jallcom.2015.06.201:Gd2Ni17  
_tdb: _tdb:GdNi-15Rah.tdb:GD2NI17, tdb:GdNi-96Su-oldGd.tdb:GD2NI17, tdb:GdNi-96Su.tdb:GD2NI17  


### TDB models of GD2NI17 (3): PHASE and CONSTITUENT statements as written

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): GD2NI17, type code %, sha256 `8a33fefaa05b5cf5…`

~~~~text
81: PHASE GD2NI17 % 2 2 17 !
82: CONST GD2NI17 : GD : NI : !
~~~~

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): GD2NI17, type code %, sha256 `60b9fc181cb2901a…`

~~~~text
94: PHASE GD2NI17 % 2 2 17 !
95: CONST GD2NI17 : GD : NI : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): GD2NI17, type code %, sha256 `3dc05d2093b96cfd…`

~~~~text
91: PHASE GD2NI17 % 2 2 17 !
92: CONST GD2NI17 : GD : NI : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1002/bbpc.19981020918](https://doi.org/10.1002/bbpc.19981020918) J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).  
_cited as the source of values for this phase_
- [doi:10.3139/146.110756](https://doi.org/10.3139/146.110756) Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).  
_cited as the source of values for this phase_

## GD2NI7 (Gd–Ni)

- Id: `phase:gd-ni:gd2ni7`; status `needs_review`
- No structure assigned. Why: mp_oqmd_space_groups_differ; no_structure_token; sgte_mmc2_rows_disagree
- Candidate (dft_mp): R-3m (166) — on-hull MP Gd2Ni7 at x(NI)=0.7778
- Candidate (dft_oqmd): P63/mmc (194) — on-hull OQMD Gd2 Ni7 at x(NI)=0.7778
- 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 GD2NI7: Gd2Ni7 (high T), see also Co7Gd2
- Candidate (sgte_mmc2): Co7Gd2 · hR18 · R-3m (166) — Hallstedt 2025 mmc2 row for GD2NI7: Gd2Ni7 (low T), see also Ce2Ni7
- Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m, low T — GdNi-15Rah.tdb: 'Prototype Co7Gd2 (hR18, R-3m, low T) and Ce2Ni7 (hP36, P6_3/mmc, high T)'
- Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m, low T — GdNi-96Su-oldGd.tdb: 'Prototype Co7Gd2 (hR18, R-3m, low T) and Ce2Ni7 (hP36, P6_3/mmc, high T)'
- Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m, low T — GdNi-96Su.tdb: 'Prototype Co7Gd2 (hR18, R-3m, low T) and Ce2Ni7 (hP36, P6_3/mmc, high T)'
- Stoichiometry: Gd 0.2222, Ni 0.7778
- Stability: stable in 3 of 3 calculated diagram(s): 300–1532.2 K, x(Ni) 0.77778–0.77778
- Literature: 10 values (10 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:gd2ni7)

Names (5): _corpus: _corpus:phase:gd-ni:gd2ni7  
_paper: _paper:10.1016/j.jallcom.2015.06.201:Gd2Ni7  
_tdb: _tdb:GdNi-15Rah.tdb:GD2NI7, tdb:GdNi-96Su-oldGd.tdb:GD2NI7, tdb:GdNi-96Su.tdb:GD2NI7  


### TDB models of GD2NI7 (3): PHASE and CONSTITUENT statements as written

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): GD2NI7, type code %, sha256 `8a33fefaa05b5cf5…`

~~~~text
71: PHASE GD2NI7 % 2 2 7 !
72: CONST GD2NI7 : GD : NI : !
~~~~

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): GD2NI7, type code %, sha256 `60b9fc181cb2901a…`

~~~~text
79: PHASE GD2NI7 % 2 2 7 !
80: CONST GD2NI7 : GD : NI : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): GD2NI7, type code %, sha256 `3dc05d2093b96cfd…`

~~~~text
76: PHASE GD2NI7 % 2 2 7 !
77: CONST GD2NI7 : GD : NI : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1002/bbpc.19981020918](https://doi.org/10.1002/bbpc.19981020918) J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).  
_cited as the source of values for this phase_
- [doi:10.3139/146.110756](https://doi.org/10.3139/146.110756) Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).  
_cited as the source of values for this phase_

## GD3NI_HT (Gd–Ni)

- Id: `phase:gd-ni:gd3ni`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
- Candidate (dft_oqmd): Pnma (62) — on-hull OQMD Gd3 Ni1 at x(NI)=0.2500
- Candidate (literature_printed): (Gd3Ni-ht) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Gd3Ni-ht) — Hallstedt 2025 mmc2 row for GD3NI_HT: Gd3Ni (high T)
- Stoichiometry: Gd 0.7500, Ni 0.2500
- Stability: stable in 1 of 1 calculated diagram(s): 910.71–1038.62 K, x(Ni) 0.25–0.25
- Literature: 9 values (9 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:gd3ni)

Names (4): _corpus: _corpus:phase:gd-ni:gd3ni, corpus:phase:gd-ni:gd3ni-ht  
_paper: _paper:10.1016/j.jallcom.2015.06.201:Gd3Ni_HT  
_tdb: _tdb:GdNi-15Rah.tdb:GD3NI_HT  


### TDB models of GD3NI_HT (1): PHASE and CONSTITUENT statements as written

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): GD3NI_HT, type code %, sha256 `8a33fefaa05b5cf5…`

~~~~text
51: PHASE GD3NI_HT % 2 3 1 !
52: CONST GD3NI_HT : GD : NI : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.3139/146.110756](https://doi.org/10.3139/146.110756) Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).  
_cited as the source of values for this phase_
- [doi:10.1002/bbpc.19981020918](https://doi.org/10.1002/bbpc.19981020918) J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).  
_cited as the source of values for this phase_

## GD3NI_D011 (Gd–Ni)

- Id: `phase:gd-ni:gd3ni-d011`; status `assigned`
- Structure: Fe3C · D0_11 · oP16 · Pnma (62); type `st:d0-11-fe3c-op16`; tier A: standard phase name; confidence high
- Stoichiometry: Gd 0.7500, Ni 0.2500
- Stability: stable in 3 of 3 calculated diagram(s): 300–1006.66 K, x(Ni) 0.25–0.25
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:gd3ni-d011)

Names (5): _corpus: _corpus:phase:gd-ni:gd3ni-d011  
_paper: _paper:10.1016/j.jallcom.2015.06.201:Gd3Ni_LT  
_tdb: _tdb:GdNi-15Rah.tdb:GD3NI_D011, tdb:GdNi-96Su-oldGd.tdb:GD3NI_D011, tdb:GdNi-96Su.tdb:GD3NI_D011  


### TDB models of GD3NI_D011 (3): PHASE and CONSTITUENT statements as written

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): GD3NI_D011, type code %, sha256 `8a33fefaa05b5cf5…`

~~~~text
46: PHASE GD3NI_D011 % 2 3 1 !
47: CONST GD3NI_D011 : GD : NI : !
~~~~

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): GD3NI_D011, type code %, sha256 `60b9fc181cb2901a…`

~~~~text
54: PHASE GD3NI_D011 % 2 3 1 !
55: CONST GD3NI_D011 : GD : NI : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): GD3NI_D011, type code %, sha256 `3dc05d2093b96cfd…`

~~~~text
51: PHASE GD3NI_D011 % 2 3 1 !
52: CONST GD3NI_D011 : GD : NI : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.3139/146.110756](https://doi.org/10.3139/146.110756) Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).  
_cited as the source of values for this phase_

## GD3NI2 (Gd–Ni)

- Id: `phase:gd-ni:gd3ni2`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (sgte_mmc2): (Gd3Ni2) — Hallstedt 2025 mmc2 row for GD3NI2: Gd3Ni2
- Stoichiometry: Gd 0.6000, Ni 0.4000
- Stability: stable in 2 of 2 calculated diagram(s): 300–961.3 K, x(Ni) 0.4–0.4
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:gd3ni2)

Names (3): _corpus: _corpus:phase:gd-ni:gd3ni2  
_tdb: _tdb:GdNi-96Su-oldGd.tdb:GD3NI2, tdb:GdNi-96Su.tdb:GD3NI2  


### TDB models of GD3NI2 (2): PHASE and CONSTITUENT statements as written

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): GD3NI2, type code %, sha256 `60b9fc181cb2901a…`

~~~~text
59: PHASE GD3NI2 % 2 3 2 !
60: CONST GD3NI2 : GD : NI : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): GD3NI2, type code %, sha256 `3dc05d2093b96cfd…`

~~~~text
56: PHASE GD3NI2 % 2 3 2 !
57: CONST GD3NI2 : GD : NI : !
~~~~

## GDNI_B33 (Gd–Ni)

- Id: `phase:gd-ni:gdni-b33`; status `assigned`
- Structure: CrB · B33 · oC8 · Cmcm (63); type `st:b33-crb-oc8`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaabewsm and oqmd-31223, space group 63
- Stoichiometry: Gd 0.5000, Ni 0.5000
- Stability: stable in 3 of 3 calculated diagram(s): 300–1551.72 K, x(Ni) 0.5–0.5
- Literature: 11 values (11 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:gdni-b33)

Names (7): _corpus: _corpus:phase:gd-ni:gdni-b33  
_mp: _mp:mp-aaabewsm  
_oqmd: _oqmd:oqmd-31223  
_paper: _paper:10.1016/j.jallcom.2015.06.201:GdNi  
_tdb: _tdb:GdNi-15Rah.tdb:GDNI_B33, tdb:GdNi-96Su-oldGd.tdb:GDNI_B33, tdb:GdNi-96Su.tdb:GDNI_B33  


### TDB models of GDNI_B33 (3): PHASE and CONSTITUENT statements as written

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): GDNI_B33, type code %, sha256 `8a33fefaa05b5cf5…`

~~~~text
56: PHASE GDNI_B33 % 2 1 1 !
57: CONST GDNI_B33 : GD : NI : !
~~~~

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): GDNI_B33, type code %, sha256 `60b9fc181cb2901a…`

~~~~text
64: PHASE GDNI_B33 % 2 1 1 !
65: CONST GDNI_B33 : GD : NI : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): GDNI_B33, type code %, sha256 `3dc05d2093b96cfd…`

~~~~text
61: PHASE GDNI_B33 % 2 1 1 !
62: CONST GDNI_B33 : GD : NI : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.3139/146.110756](https://doi.org/10.3139/146.110756) Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).  
_cited as the source of values for this phase_
- [doi:10.1002/bbpc.19981020918](https://doi.org/10.1002/bbpc.19981020918) J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).  
_cited as the source of values for this phase_

## GDNI2_C15 (Gd–Ni)

- Id: `phase:gd-ni:gdni2-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-aaabexhj and oqmd-18494, space group 227
- Stoichiometry: Gd 0.3333, Ni 0.6667
- Stability: stable in 3 of 3 calculated diagram(s): 300–1349.39 K, x(Ni) 0.66667–0.66667
- Literature: 10 values (10 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:gdni2-c15)

Names (7): _corpus: _corpus:phase:gd-ni:gdni2-c15  
_mp: _mp:mp-aaabexhj  
_oqmd: _oqmd:oqmd-18494  
_paper: _paper:10.1016/j.jallcom.2015.06.201:GdNi2  
_tdb: _tdb:GdNi-15Rah.tdb:GDNI2_C15, tdb:GdNi-96Su-oldGd.tdb:GDNI2_C15, tdb:GdNi-96Su.tdb:GDNI2_C15  


### TDB models of GDNI2_C15 (3): PHASE and CONSTITUENT statements as written

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): GDNI2_C15, type code %, sha256 `8a33fefaa05b5cf5…`

~~~~text
61: PHASE GDNI2_C15 % 2 1 2 !
62: CONST GDNI2_C15 : GD : NI : !
~~~~

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): GDNI2_C15, type code %, sha256 `60b9fc181cb2901a…`

~~~~text
69: PHASE GDNI2_C15 % 2 1 2 !
70: CONST GDNI2_C15 : GD : NI : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): GDNI2_C15, type code %, sha256 `3dc05d2093b96cfd…`

~~~~text
66: PHASE GDNI2_C15 % 2 1 2 !
67: CONST GDNI2_C15 : GD : NI : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1002/bbpc.19981020918](https://doi.org/10.1002/bbpc.19981020918) J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).  
_cited as the source of values for this phase_
- [doi:10.3139/146.110756](https://doi.org/10.3139/146.110756) Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).  
_cited as the source of values for this phase_

## GDNI3 (Gd–Ni)

- Id: `phase:gd-ni:gdni3`; 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: Gd 0.2500, Ni 0.7500
- Stability: stable in 3 of 3 calculated diagram(s): 300–1494.63 K, x(Ni) 0.75–0.75
- Literature: 10 values (10 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:gdni3)

Names (5): _corpus: _corpus:phase:gd-ni:gdni3  
_paper: _paper:10.1016/j.jallcom.2015.06.201:GdNi3  
_tdb: _tdb:GdNi-15Rah.tdb:GDNI3, tdb:GdNi-96Su-oldGd.tdb:GDNI3, tdb:GdNi-96Su.tdb:GDNI3  


### TDB models of GDNI3 (3): PHASE and CONSTITUENT statements as written

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): GDNI3, type code %, sha256 `8a33fefaa05b5cf5…`

~~~~text
66: PHASE GDNI3 % 2 1 3 !
67: CONST GDNI3 : GD : NI : !
~~~~

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): GDNI3, type code %, sha256 `60b9fc181cb2901a…`

~~~~text
74: PHASE GDNI3 % 2 1 3 !
75: CONST GDNI3 : GD : NI : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): GDNI3, type code %, sha256 `3dc05d2093b96cfd…`

~~~~text
71: PHASE GDNI3 % 2 1 3 !
72: CONST GDNI3 : GD : NI : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1002/bbpc.19981020918](https://doi.org/10.1002/bbpc.19981020918) J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).  
_cited as the source of values for this phase_
- [doi:10.3139/146.110756](https://doi.org/10.3139/146.110756) Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).  
_cited as the source of values for this phase_

## GDNI4 (Gd–Ni)

- Id: `phase:gd-ni:gdni4`; status `assigned`
- Structure: Co19Sm5 · hP48 · P6_3/mmc (194); type `st:co19sm5-hp48`; 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: Gd 0.2000, Ni 0.8000
- Stability: stable in 2 of 2 calculated diagram(s): 300–1540.66 K, x(Ni) 0.8–0.8
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:gdni4)

Names (3): _corpus: _corpus:phase:gd-ni:gdni4  
_tdb: _tdb:GdNi-96Su-oldGd.tdb:GDNI4, tdb:GdNi-96Su.tdb:GDNI4  


### TDB models of GDNI4 (2): PHASE and CONSTITUENT statements as written

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): GDNI4, type code %, sha256 `60b9fc181cb2901a…`

~~~~text
84: PHASE GDNI4 % 2 1 4 !
85: CONST GDNI4 : GD : NI : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): GDNI4, type code %, sha256 `3dc05d2093b96cfd…`

~~~~text
81: PHASE GDNI4 % 2 1 4 !
82: CONST GDNI4 : GD : NI : !
~~~~

## GDNI5_D2D (Gd–Ni)

- Id: `phase:gd-ni:gdni5-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-aaaabfnl and oqmd-18493, space group 191
- Stoichiometry: Gd 0.1667, Ni 0.8333
- Stability: stable in 3 of 3 calculated diagram(s): 300–1751.79 K, x(Ni) 0.83333–0.83333
- Literature: 14 values (14 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:gdni5-d2d)

Names (7): _corpus: _corpus:phase:gd-ni:gdni5-d2d  
_mp: _mp:mp-aaaabfnl  
_oqmd: _oqmd:oqmd-18493  
_paper: _paper:10.1016/j.jallcom.2015.06.201:GdNi5  
_tdb: _tdb:GdNi-15Rah.tdb:GDNI5_D2D, tdb:GdNi-96Su-oldGd.tdb:GDNI5_D2D, tdb:GdNi-96Su.tdb:GDNI5_D2D  


### TDB models of GDNI5_D2D (3): PHASE and CONSTITUENT statements as written

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): GDNI5_D2D, type code %, sha256 `8a33fefaa05b5cf5…`

~~~~text
76: PHASE GDNI5_D2D % 2 1 5 !
77: CONST GDNI5_D2D : GD : NI : !
~~~~

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): GDNI5_D2D, type code %, sha256 `60b9fc181cb2901a…`

~~~~text
89: PHASE GDNI5_D2D % 2 1 5 !
90: CONST GDNI5_D2D : GD : NI : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): GDNI5_D2D, type code %, sha256 `3dc05d2093b96cfd…`

~~~~text
86: PHASE GDNI5_D2D % 2 1 5 !
87: CONST GDNI5_D2D : GD : NI : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1002/bbpc.19981020918](https://doi.org/10.1002/bbpc.19981020918) J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).  
_cited as the source of values for this phase_
- [doi:10.3139/146.110756](https://doi.org/10.3139/146.110756) Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).  
_cited as the source of values for this phase_

## HCP_A3 (Gd–Ni)

- Id: `phase:gd-ni: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): 300–1535.04 K, x(Ni) 0–0.00206
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:hcp-a3)

Names (5): _corpus: _corpus:phase:gd-ni:hcp-a3  
_paper: _paper:10.1016/j.jallcom.2015.06.201:α-Gd  
_tdb: _tdb:GdNi-15Rah.tdb:HCP_A3, tdb:GdNi-96Su-oldGd.tdb:HCP_A3, tdb:GdNi-96Su.tdb:HCP_A3  


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

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): HCP_A3, type code %, sha256 `8a33fefaa05b5cf5…`

~~~~text
41: PHASE HCP_A3 % 2 1 0.5 !
42: CONST HCP_A3 : GD% NI : VA : !
~~~~

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): HCP_A3, type code %, sha256 `60b9fc181cb2901a…`

~~~~text
49: PHASE HCP_A3 % 2 1 0.5 !
50: CONST HCP_A3 : GD% NI : VA : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): HCP_A3, type code %, sha256 `3dc05d2093b96cfd…`

~~~~text
46: PHASE HCP_A3 % 2 1 0.5 !
47: CONST HCP_A3 : GD% NI : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1002/bbpc.19981020918](https://doi.org/10.1002/bbpc.19981020918) J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).  
_cited as the source of values for this phase_
- [doi:10.3139/146.110756](https://doi.org/10.3139/146.110756) Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).  
_cited as the source of values for this phase_

## LIQUID (Gd–Ni)

- Id: `phase:gd-ni:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 3 of 3 calculated diagram(s): 875.72–2500 K, x(Ni) 0–1
- Literature: 46 values (46 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:gd-ni:liquid)

Names (6): _corpus: _corpus:phase:gd-ni:liquid  
_paper: _paper:10.1016/j.jallcom.2006.09.068:Liquid, paper:10.1016/j.jallcom.2015.06.201:Liquid  
_tdb: _tdb:GdNi-15Rah.tdb:LIQUID, tdb:GdNi-96Su-oldGd.tdb:LIQUID, tdb:GdNi-96Su.tdb:LIQUID  


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

[GdNi-15Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb): LIQUID, type code %, sha256 `8a33fefaa05b5cf5…`

~~~~text
26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : GD NI : !
~~~~

[GdNi-96Su-oldGd.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb): LIQUID, type code %, sha256 `60b9fc181cb2901a…`

~~~~text
34: PHASE LIQUID:L % 1 1 !
35: CONST LIQUID:L : GD NI : !
~~~~

[GdNi-96Su.tdb](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb): LIQUID, type code %, sha256 `3dc05d2093b96cfd…`

~~~~text
31: PHASE LIQUID:L % 1 1 !
32: CONST LIQUID:L : GD NI : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1002/bbpc.19981020918](https://doi.org/10.1002/bbpc.19981020918) J. Dischinger, H.‐J. Schaller, III. Highly reactive and multicomponent systems: On the constitution and thermodynamics of Ni‐Gd alloys, Ber Bunsenges Phys Chem 102, 1167-1172 (1998).  
_cited as the source of values for this phase_
- [doi:10.3139/146.110756](https://doi.org/10.3139/146.110756) Guanglong Xu, Yu-Wen Cui, Houjun Fei, Ligang Zhang, Feng Zheng, Libin Liu et al., Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems, International Journal of Materials Research 103, 1179-1187 (2012).  
_cited as the source of values for this phase_
- [doi:10.1016/j.jallcom.2006.09.068](https://doi.org/10.1016/j.jallcom.2006.09.068) Mianliang Huang, Deborah L. Schlagel, Frederick A. Schmidt, Thomas A. Lograsso, Experimental investigation and thermodynamic modeling of the Gd–Si system, Journal of Alloys and Compounds 441, 94-100 (2007).  
_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).