# Ga–Ho phases

> Ga–Ho system: 10 phases (tier A 7, tier C 1, liquid 1, needs_review 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/GA-HO.html · Markdown: https://data.orchid-project.org/phases/pages/GA-HO.md

10 phases (tier A 7, tier C 1, liquid 1, needs_review 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=GA-HO) · [full JSON](https://data.orchid-project.org/phases/systems/GA-HO.json) · [Ga–Ho system page](https://data.orchid-project.org/systems/GA-HO.html) · [Markdown](https://data.orchid-project.org/phases/pages/GA-HO.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Ga–Ho system (10)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [ORTHORHOMBIC_A11](#phase-ga-ho-a11-orthorhombic); _phase:ga-ho:a11-orthorhombic_ | alpha-Ga · A11 · oC8 · Cmce (64) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–302.91 K, x(Ho) 0–0 | 5 | 1 |
| [BCC_A2](#phase-ga-ho-bcc-a2); _phase:ga-ho:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 |
| [FCC_A1](#phase-ga-ho-fcc-a1); _phase:ga-ho:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 |
| [GA2HO_C32](#phase-ga-ho-ga2ho-c32); _phase:ga-ho:ga2ho-c32_ | AlB2 · C32 · hP3 · P6/mmm (191) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1574.41 K, x(Ho) 0.33333–0.33333 | 11 | 1 |
| [GA3HO](#phase-ga-ho-ga3ho); _phase:ga-ho:ga3ho_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–1166.09 K, x(Ho) 0.25–0.25 | 9 | 1 |
| [GA3HO5_D88](#phase-ga-ho-ga3ho5-d88); _phase:ga-ho:ga3ho5-d88_ | Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1552.37 K, x(Ho) 0.625–0.625 | 8 | 1 |
| [GA6HO](#phase-ga-ho-ga6ho); _phase:ga-ho:ga6ho_ | Ga6Pu · tP14 · P4/nbm (125) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–564.91 K, x(Ho) 0.14286–0.14286 | 9 | 1 |
| [GAHO_B33](#phase-ga-ho-gaho-b33); _phase:ga-ho:gaho-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1556.18 K, x(Ho) 0.5–0.5 | 9 | 1 |
| [HCP_A3](#phase-ga-ho-hcp-a3); _phase:ga-ho:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–2499.45 K, x(Ho) 0.99999–1 | 4 | 1 |
| [LIQUID](#phase-ga-ho-liquid); _phase:ga-ho:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 302.91–2500 K, x(Ho) 0–1 | 30 | 1 |

## ORTHORHOMBIC_A11 (Ga–Ho)

- Id: `phase:ga-ho:a11-orthorhombic`; status `assigned`
- Structure: alpha-Ga · A11 · oC8 · Cmce (64); type `st:a11-alpha-ga-oc8`; tier A: standard phase name; confidence high
- Stoichiometry: Ga 1.0000
- Stability: stable in 1 of 1 calculated diagram(s): 300–302.91 K, x(Ho) 0–0
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-ho:a11-orthorhombic)

Names (4): _corpus: _corpus:phase:ga-ho:a11-orthorhombic, corpus:phase:ga-ho:orthorhombic-a11  
_paper: _paper:10.1007/s10973-019-08689-5:(Ga)  
_tdb: _tdb:GaHo-20Ait.tdb:ORTHORHOMBIC_A11  


### TDB models of ORTHORHOMBIC_A11 (1): PHASE and CONSTITUENT statements as written

[GaHo-20Ait.tdb](https://orchid-project.org/data/databases/sgte-binary/GaHo-20Ait.tdb): ORTHORHOMBIC_A11, type code %, sha256 `97e610d6cbfd4c80…`

~~~~text
47: PHASE ORTHORHOMBIC_A11 % 1 1 !
48: CONST ORTHORHOMBIC_A11 : GA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10973-019-08689-5](https://doi.org/10.1007/s10973-019-08689-5) M. Ait Boukideur, N. Selhaoui, F. Z. Chrifi Alaoui, A. Iddaoudi, K. Achgar, S. Kardellass, Thermodynamic assessment of the Ho–Ga system, J Therm Anal Calorim 139, 3623-3633 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(79)90170-x](https://doi.org/10.1016/0022-5088%2879%2990170-x) S.P Yatsenko, A.A Semyannikov, B.G Semenov, K.A Chuntonov, Phase diagrams of rare earth metals with gallium, Journal of the Less Common Metals 64, 185-199 (1979).  
_cited as the source of values for this phase_
- [doi:10.1016/0025-5416(82)90075-1](https://doi.org/10.1016/0025-5416%2882%2990075-1) Joshua Pelleg, G. Kimmel, The HoGa system in the 66.7–100 at.% Ga range, Materials Science and Engineering 52, P1-P7 (1982).  
_cited as the source of values for this phase_

## BCC_A2 (Ga–Ho)

- Id: `phase:ga-ho:bcc-a2`; status `assigned`
- Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; tier A: standard phase name; confidence high
- Stability: not stable in 1 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-ho:bcc-a2)

Names (2): _corpus: _corpus:phase:ga-ho:bcc-a2  
_tdb: _tdb:GaHo-20Ait.tdb:BCC_A2  


### TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written

[GaHo-20Ait.tdb](https://orchid-project.org/data/databases/sgte-binary/GaHo-20Ait.tdb): BCC_A2, type code %B, sha256 `97e610d6cbfd4c80…`

~~~~text
37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : GA HO% : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1007/s10973-019-08689-5](https://doi.org/10.1007/s10973-019-08689-5) M. Ait Boukideur, N. Selhaoui, F. Z. Chrifi Alaoui, A. Iddaoudi, K. Achgar, S. Kardellass, Thermodynamic assessment of the Ho–Ga system, J Therm Anal Calorim 139, 3623-3633 (2020).  
_assessment that models this phase_

## FCC_A1 (Ga–Ho)

- Id: `phase:ga-ho:fcc-a1`; status `assigned`
- Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high
- Stability: not stable in 1 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-ho:fcc-a1)

Names (2): _corpus: _corpus:phase:ga-ho:fcc-a1  
_tdb: _tdb:GaHo-20Ait.tdb:FCC_A1  


### TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written

[GaHo-20Ait.tdb](https://orchid-project.org/data/databases/sgte-binary/GaHo-20Ait.tdb): FCC_A1, type code %A, sha256 `97e610d6cbfd4c80…`

~~~~text
32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : GA HO : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1007/s10973-019-08689-5](https://doi.org/10.1007/s10973-019-08689-5) M. Ait Boukideur, N. Selhaoui, F. Z. Chrifi Alaoui, A. Iddaoudi, K. Achgar, S. Kardellass, Thermodynamic assessment of the Ho–Ga system, J Therm Anal Calorim 139, 3623-3633 (2020).  
_assessment that models this phase_

## GA2HO_C32 (Ga–Ho)

- Id: `phase:ga-ho:ga2ho-c32`; status `assigned`
- Structure: AlB2 · C32 · hP3 · P6/mmm (191); type `st:c32-alb2-hp3`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaaabwi and oqmd-19196, space group 191
- Stoichiometry: Ga 0.6667, Ho 0.3333
- Stability: stable in 1 of 1 calculated diagram(s): 300–1574.41 K, x(Ho) 0.33333–0.33333
- Literature: 11 values (11 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-ho:ga2ho-c32)

Names (5): _corpus: _corpus:phase:ga-ho:ga2ho-c32  
_mp: _mp:mp-aaaaabwi  
_oqmd: _oqmd:oqmd-19196  
_paper: _paper:10.1007/s10973-019-08689-5:HoGa2  
_tdb: _tdb:GaHo-20Ait.tdb:GA2HO_C32  


### TDB models of GA2HO_C32 (1): PHASE and CONSTITUENT statements as written

[GaHo-20Ait.tdb](https://orchid-project.org/data/databases/sgte-binary/GaHo-20Ait.tdb): GA2HO_C32, type code %, sha256 `97e610d6cbfd4c80…`

~~~~text
66: PHASE GA2HO_C32 % 2 2 1 !
67: CONST GA2HO_C32 : GA : HO : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10973-019-08689-5](https://doi.org/10.1007/s10973-019-08689-5) M. Ait Boukideur, N. Selhaoui, F. Z. Chrifi Alaoui, A. Iddaoudi, K. Achgar, S. Kardellass, Thermodynamic assessment of the Ho–Ga system, J Therm Anal Calorim 139, 3623-3633 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(79)90170-x](https://doi.org/10.1016/0022-5088%2879%2990170-x) S.P Yatsenko, A.A Semyannikov, B.G Semenov, K.A Chuntonov, Phase diagrams of rare earth metals with gallium, Journal of the Less Common Metals 64, 185-199 (1979).  
_cited as the source of values for this phase_
- [doi:10.1016/0025-5416(82)90075-1](https://doi.org/10.1016/0025-5416%2882%2990075-1) Joshua Pelleg, G. Kimmel, The HoGa system in the 66.7–100 at.% Ga range, Materials Science and Engineering 52, P1-P7 (1982).  
_cited as the source of values for this phase_

## GA3HO (Ga–Ho)

- Id: `phase:ga-ho:ga3ho`; status `needs_review`
- No structure assigned. Why: mp_oqmd_space_groups_differ; no_structure_token; sgte_mmc2_rows_disagree
- Candidate (dft_mp): Pm-3m (221) — on-hull MP HoGa3 at x(HO)=0.2500
- Candidate (dft_oqmd): P63/mmc (194) — on-hull OQMD Ga3 Ho1 at x(HO)=0.2500
- Candidate (literature_printed): Al3Ho · hR20 — printed with a label mapped to this phase
- Candidate (sgte_mmc2): Al3Ho · hR20 · R-3m (166) — Hallstedt 2025 mmc2 row for GA3HO: Ga3Ho (gamma, see also Ni3Ti, Pd2RhTa, Al3Pu, AuCu3)
- Candidate (sgte_mmc2): Al3Pu · hP24 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for GA3HO: Ga3Ho (delta, see also Ni3Ti, Pd2RhTa, Al3Ho, AuCu3)
- Candidate (sgte_mmc2): Ni3Ti · D0_24 · hP16 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for GA3HO: Ga3Ho (alpha, see also Pd2RhTa, Al3Ho, Al3Pu, AuCu3)
- Candidate (sgte_mmc2): AuCu3 · L1_2 · cP4 · Pm-3m (221) — Hallstedt 2025 mmc2 row for GA3HO: Ga3Ho (epsilon, see also Ni3Ti, Pd2RhTa, Al3Ho, Al3Pu)
- Candidate (sgte_mmc2): Pd2RhTa · hP40 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for GA3HO: Ga3Ho (beta, see also Ni3Ti, Al3Ho, Al3Pu, AuCu3)
- Stoichiometry: Ga 0.7500, Ho 0.2500
- Stability: stable in 1 of 1 calculated diagram(s): 300–1166.09 K, x(Ho) 0.25–0.25
- Literature: 9 values (9 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-ho:ga3ho)

Names (3): _corpus: _corpus:phase:ga-ho:ga3ho  
_paper: _paper:10.1007/s10973-019-08689-5:HoGa3  
_tdb: _tdb:GaHo-20Ait.tdb:GA3HO  


### TDB models of GA3HO (1): PHASE and CONSTITUENT statements as written

[GaHo-20Ait.tdb](https://orchid-project.org/data/databases/sgte-binary/GaHo-20Ait.tdb): GA3HO, type code %, sha256 `97e610d6cbfd4c80…`

~~~~text
61: PHASE GA3HO % 2 3 1 !
62: CONST GA3HO : GA : HO : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10973-019-08689-5](https://doi.org/10.1007/s10973-019-08689-5) M. Ait Boukideur, N. Selhaoui, F. Z. Chrifi Alaoui, A. Iddaoudi, K. Achgar, S. Kardellass, Thermodynamic assessment of the Ho–Ga system, J Therm Anal Calorim 139, 3623-3633 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0025-5416(82)90075-1](https://doi.org/10.1016/0025-5416%2882%2990075-1) Joshua Pelleg, G. Kimmel, The HoGa system in the 66.7–100 at.% Ga range, Materials Science and Engineering 52, P1-P7 (1982).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(79)90170-x](https://doi.org/10.1016/0022-5088%2879%2990170-x) S.P Yatsenko, A.A Semyannikov, B.G Semenov, K.A Chuntonov, Phase diagrams of rare earth metals with gallium, Journal of the Less Common Metals 64, 185-199 (1979).  
_cited as the source of values for this phase_

## GA3HO5_D88 (Ga–Ho)

- Id: `phase:ga-ho:ga3ho5-d88`; status `assigned`
- Structure: Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193); type `st:d8-8-mn5si3-hp16`; tier A: standard phase name; confidence high
- Stoichiometry: Ga 0.3750, Ho 0.6250
- Stability: stable in 1 of 1 calculated diagram(s): 300–1552.37 K, x(Ho) 0.625–0.625
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-ho:ga3ho5-d88)

Names (3): _corpus: _corpus:phase:ga-ho:ga3ho5-d88  
_paper: _paper:10.1007/s10973-019-08689-5:Ho5Ga3  
_tdb: _tdb:GaHo-20Ait.tdb:GA3HO5_D88  


### TDB models of GA3HO5_D88 (1): PHASE and CONSTITUENT statements as written

[GaHo-20Ait.tdb](https://orchid-project.org/data/databases/sgte-binary/GaHo-20Ait.tdb): GA3HO5_D88, type code %, sha256 `97e610d6cbfd4c80…`

~~~~text
76: PHASE GA3HO5_D88 % 2 3 5 !
77: CONST GA3HO5_D88 : GA : HO : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s10973-019-08689-5](https://doi.org/10.1007/s10973-019-08689-5) M. Ait Boukideur, N. Selhaoui, F. Z. Chrifi Alaoui, A. Iddaoudi, K. Achgar, S. Kardellass, Thermodynamic assessment of the Ho–Ga system, J Therm Anal Calorim 139, 3623-3633 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(79)90170-x](https://doi.org/10.1016/0022-5088%2879%2990170-x) S.P Yatsenko, A.A Semyannikov, B.G Semenov, K.A Chuntonov, Phase diagrams of rare earth metals with gallium, Journal of the Less Common Metals 64, 185-199 (1979).  
_cited as the source of values for this phase_

## GA6HO (Ga–Ho)

- Id: `phase:ga-ho:ga6ho`; status `assigned`
- Structure: Ga6Pu · tP14 · P4/nbm (125); type `st:ga6pu-tp14`; 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_mp, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Ga 0.8571, Ho 0.1429
- Stability: stable in 1 of 1 calculated diagram(s): 300–564.91 K, x(Ho) 0.14286–0.14286
- Literature: 9 values (9 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-ho:ga6ho)

Names (3): _corpus: _corpus:phase:ga-ho:ga6ho  
_paper: _paper:10.1007/s10973-019-08689-5:HoGa6  
_tdb: _tdb:GaHo-20Ait.tdb:GA6HO  


### TDB models of GA6HO (1): PHASE and CONSTITUENT statements as written

[GaHo-20Ait.tdb](https://orchid-project.org/data/databases/sgte-binary/GaHo-20Ait.tdb): GA6HO, type code %, sha256 `97e610d6cbfd4c80…`

~~~~text
52: PHASE GA6HO % 2 6 1 !
53: CONST GA6HO : GA : HO : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10973-019-08689-5](https://doi.org/10.1007/s10973-019-08689-5) M. Ait Boukideur, N. Selhaoui, F. Z. Chrifi Alaoui, A. Iddaoudi, K. Achgar, S. Kardellass, Thermodynamic assessment of the Ho–Ga system, J Therm Anal Calorim 139, 3623-3633 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0025-5416(82)90075-1](https://doi.org/10.1016/0025-5416%2882%2990075-1) Joshua Pelleg, G. Kimmel, The HoGa system in the 66.7–100 at.% Ga range, Materials Science and Engineering 52, P1-P7 (1982).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(79)90170-x](https://doi.org/10.1016/0022-5088%2879%2990170-x) S.P Yatsenko, A.A Semyannikov, B.G Semenov, K.A Chuntonov, Phase diagrams of rare earth metals with gallium, Journal of the Less Common Metals 64, 185-199 (1979).  
_cited as the source of values for this phase_

## GAHO_B33 (Ga–Ho)

- Id: `phase:ga-ho:gaho-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-aaacfyar and oqmd-30286, space group 63
- Stoichiometry: Ga 0.5000, Ho 0.5000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1556.18 K, x(Ho) 0.5–0.5
- Literature: 9 values (9 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-ho:gaho-b33)

Names (5): _corpus: _corpus:phase:ga-ho:gaho-b33  
_mp: _mp:mp-aaacfyar  
_oqmd: _oqmd:oqmd-30286  
_paper: _paper:10.1007/s10973-019-08689-5:HoGa  
_tdb: _tdb:GaHo-20Ait.tdb:GAHO_B33  


### TDB models of GAHO_B33 (1): PHASE and CONSTITUENT statements as written

[GaHo-20Ait.tdb](https://orchid-project.org/data/databases/sgte-binary/GaHo-20Ait.tdb): GAHO_B33, type code %, sha256 `97e610d6cbfd4c80…`

~~~~text
71: PHASE GAHO_B33 % 2 1 1 !
72: CONST GAHO_B33 : GA : HO : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s10973-019-08689-5](https://doi.org/10.1007/s10973-019-08689-5) M. Ait Boukideur, N. Selhaoui, F. Z. Chrifi Alaoui, A. Iddaoudi, K. Achgar, S. Kardellass, Thermodynamic assessment of the Ho–Ga system, J Therm Anal Calorim 139, 3623-3633 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(79)90170-x](https://doi.org/10.1016/0022-5088%2879%2990170-x) S.P Yatsenko, A.A Semyannikov, B.G Semenov, K.A Chuntonov, Phase diagrams of rare earth metals with gallium, Journal of the Less Common Metals 64, 185-199 (1979).  
_cited as the source of values for this phase_

## HCP_A3 (Ga–Ho)

- Id: `phase:ga-ho: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 1 of 1 calculated diagram(s): 300–2499.45 K, x(Ho) 0.99999–1
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-ho:hcp-a3)

Names (3): _corpus: _corpus:phase:ga-ho:hcp-a3  
_paper: _paper:10.1007/s10973-019-08689-5:(Ho)  
_tdb: _tdb:GaHo-20Ait.tdb:HCP_A3  


### TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written

[GaHo-20Ait.tdb](https://orchid-project.org/data/databases/sgte-binary/GaHo-20Ait.tdb): HCP_A3, type code %, sha256 `97e610d6cbfd4c80…`

~~~~text
42: PHASE HCP_A3 % 2 1 0.5 !
43: CONST HCP_A3 : GA HO% : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s10973-019-08689-5](https://doi.org/10.1007/s10973-019-08689-5) M. Ait Boukideur, N. Selhaoui, F. Z. Chrifi Alaoui, A. Iddaoudi, K. Achgar, S. Kardellass, Thermodynamic assessment of the Ho–Ga system, J Therm Anal Calorim 139, 3623-3633 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(79)90170-x](https://doi.org/10.1016/0022-5088%2879%2990170-x) S.P Yatsenko, A.A Semyannikov, B.G Semenov, K.A Chuntonov, Phase diagrams of rare earth metals with gallium, Journal of the Less Common Metals 64, 185-199 (1979).  
_cited as the source of values for this phase_

## LIQUID (Ga–Ho)

- Id: `phase:ga-ho:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 302.91–2500 K, x(Ho) 0–1
- Literature: 30 values (30 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-ho:liquid)

Names (3): _corpus: _corpus:phase:ga-ho:liquid  
_paper: _paper:10.1007/s10973-019-08689-5:Liq  
_tdb: _tdb:GaHo-20Ait.tdb:LIQUID  


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

[GaHo-20Ait.tdb](https://orchid-project.org/data/databases/sgte-binary/GaHo-20Ait.tdb): LIQUID, type code %, sha256 `97e610d6cbfd4c80…`

~~~~text
27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : GA HO : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1007/s10973-019-08689-5](https://doi.org/10.1007/s10973-019-08689-5) M. Ait Boukideur, N. Selhaoui, F. Z. Chrifi Alaoui, A. Iddaoudi, K. Achgar, S. Kardellass, Thermodynamic assessment of the Ho–Ga system, J Therm Anal Calorim 139, 3623-3633 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(79)90170-x](https://doi.org/10.1016/0022-5088%2879%2990170-x) S.P Yatsenko, A.A Semyannikov, B.G Semenov, K.A Chuntonov, Phase diagrams of rare earth metals with gallium, Journal of the Less Common Metals 64, 185-199 (1979).  
_cited as the source of values for this phase_
- [doi:10.1016/0025-5416(82)90075-1](https://doi.org/10.1016/0025-5416%2882%2990075-1) Joshua Pelleg, G. Kimmel, The HoGa system in the 66.7–100 at.% Ga range, Materials Science and Engineering 52, P1-P7 (1982).  
_cited as the source of values for this phase_

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735970
- R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065

Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work).

Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

```bibtex
@misc{orchid_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).
