# Ga–La phases

> Ga–La system: 12 phases (tier A 8, tier B 1, tier C 2, liquid 1); 11 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-LA.html · Markdown: https://data.orchid-project.org/phases/pages/GA-LA.md

12 phases (tier A 8, tier B 1, tier C 2, liquid 1); 11 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-LA) · [full JSON](https://data.orchid-project.org/phases/systems/GA-LA.json) · [Ga–La system page](https://data.orchid-project.org/systems/GA-LA.html) · [Markdown](https://data.orchid-project.org/phases/pages/GA-LA.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Ga–La system (12)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [ORTHORHOMBIC_A11](#phase-ga-la-a11-orthorhombic); _phase:ga-la:a11-orthorhombic_ | alpha-Ga · A11 · oC8 · Cmce (64) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–302.91 K, x(La) 0–0 | 0 | 2 |
| [BCC_A2](#phase-ga-la-bcc-a2); _phase:ga-la:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 1134–1199 K, x(La) 1–1 | 0 | 2 |
| [DHCP](#phase-ga-la-dhcp-a3); _phase:ga-la:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1125 K, x(La) 1–1 | 0 | 2 |
| [FCC_A1](#phase-ga-la-fcc-a1); _phase:ga-la:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 550–1134 K, x(La) 1–1 | 0 | 2 |
| [GA2LA_C32](#phase-ga-la-ga2la-c32); _phase:ga-la:ga2la-c32_ | AlB2 · C32 · hP3 · P6/mmm (191) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1726.63 K, x(La) 0.23604–0.33346 | 0 | 2 |
| [GA3LA5](#phase-ga-la-ga3la5); _phase:ga-la:ga3la5_ | Ba5Si3 · tP32 · P4/ncc (130) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1099.94 K, x(La) 0.625–0.625 | 0 | 2 |
| [GA4LA](#phase-ga-la-ga4la); _phase:ga-la:ga4la_ | Ga4La · oP20 · Pmmm (47) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–757.72 K, x(La) 0.2–0.2 | 0 | 2 |
| [GA6LA](#phase-ga-la-ga6la); _phase:ga-la:ga6la_ | Ga6Pu · tP14 · P4/nbm (125) | tier B: DFT-supported (unique MP + OQMD match) | stable in 2 of 2 calculated diagram(s): 300–752.95 K, x(La) 0.14286–0.14286 | 0 | 2 |
| [GALA_B33](#phase-ga-la-gala-b33); _phase:ga-la:gala-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1294.64 K, x(La) 0.5–0.5 | 0 | 2 |
| [GALA3_L12](#phase-ga-la-gala3-l12); _phase:ga-la:gala3-l12_ | AuCu3 · L1_2 · cP4 · Pm-3m (221) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–885.78 K, x(La) 0.75–0.75 | 0 | 2 |
| [HCP_A3](#phase-ga-la-hcp-a3); _phase:ga-la:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 |
| [LIQUID](#phase-ga-la-liquid); _phase:ga-la:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 301.74–2500 K, x(La) 0–1 | 0 | 2 |

## ORTHORHOMBIC_A11 (Ga–La)

- Id: `phase:ga-la: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 2 of 2 calculated diagram(s): 300–302.91 K, x(La) 0–0
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:a11-orthorhombic)

Names (3): _corpus: _corpus:phase:ga-la:a11-orthorhombic  
_tdb: _tdb:GaLa-11Idb.tdb:ORTHORHOMBIC_A11, tdb:GaLa-22Bou.tdb:ORTHORHOMBIC_A11  


### TDB models of ORTHORHOMBIC_A11 (2): PHASE and CONSTITUENT statements as written

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): ORTHORHOMBIC_A11, type code %, sha256 `89d52a239cf65db0…`

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

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): ORTHORHOMBIC_A11, type code %, sha256 `68c1ebe6a570af2b…`

~~~~text
51: PHASE ORTHORHOMBIC_A11 % 1 1 !
52: CONST ORTHORHOMBIC_A11 : GA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models this phase_

## BCC_A2 (Ga–La)

- Id: `phase:ga-la:bcc-a2`; status `assigned`
- Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; tier A: standard phase name; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 1134–1199 K, x(La) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:bcc-a2)

Names (3): _corpus: _corpus:phase:ga-la:bcc-a2  
_tdb: _tdb:GaLa-11Idb.tdb:BCC_A2, tdb:GaLa-22Bou.tdb:BCC_A2  


### TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): BCC_A2, type code %B, sha256 `89d52a239cf65db0…`

~~~~text
32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : GA LA% : VA : !
~~~~

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): BCC_A2, type code %B, sha256 `68c1ebe6a570af2b…`

~~~~text
36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : GA LA% : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models this phase_

## DHCP (Ga–La)

- Id: `phase:ga-la:dhcp-a3`; status `assigned`
- Structure: alpha-La · A3' · hP4 · P6_3/mmc (194); type `st:a3-alpha-la-hp4`; tier A: standard phase name; confidence high
- Stoichiometry: La 1.0000
- Stability: stable in 2 of 2 calculated diagram(s): 300–1125 K, x(La) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:dhcp-a3)

Names (3): _corpus: _corpus:phase:ga-la:dhcp-a3  
_tdb: _tdb:GaLa-11Idb.tdb:DHCP, tdb:GaLa-22Bou.tdb:DHCP  


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

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): DHCP, type code %, sha256 `89d52a239cf65db0…`

~~~~text
42: PHASE DHCP % 1 1 !
43: CONST DHCP : LA : !
~~~~

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): DHCP, type code %, sha256 `68c1ebe6a570af2b…`

~~~~text
46: PHASE DHCP % 1 1 !
47: CONST DHCP : LA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models this phase_

## FCC_A1 (Ga–La)

- Id: `phase:ga-la:fcc-a1`; status `assigned`
- Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 550–1134 K, x(La) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:fcc-a1)

Names (3): _corpus: _corpus:phase:ga-la:fcc-a1  
_tdb: _tdb:GaLa-11Idb.tdb:FCC_A1, tdb:GaLa-22Bou.tdb:FCC_A1  


### TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): FCC_A1, type code %A, sha256 `89d52a239cf65db0…`

~~~~text
27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : GA LA% : VA : !
~~~~

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): FCC_A1, type code %A, sha256 `68c1ebe6a570af2b…`

~~~~text
31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : GA LA% : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models this phase_

## GA2LA_C32 (Ga–La)

- Id: `phase:ga-la:ga2la-c32`; status `assigned`
- Structure: AlB2 · C32 · hP3 · P6/mmm (191); type `st:c32-alb2-hp3`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in GaLa-22Bou.tdb also describes the disordered state
- Stability: stable in 2 of 2 calculated diagram(s): 300–1726.63 K, x(La) 0.23604–0.33346
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:ga2la-c32)

Names (3): _corpus: _corpus:phase:ga-la:ga2la-c32  
_tdb: _tdb:GaLa-11Idb.tdb:GA2LA_C32, tdb:GaLa-22Bou.tdb:GA2LA_C32  


### TDB models of GA2LA_C32 (2): PHASE and CONSTITUENT statements as written

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): GA2LA_C32, type code %, sha256 `89d52a239cf65db0…`

~~~~text
62: PHASE GA2LA_C32 % 2 2 1 !
63: CONST GA2LA_C32 : GA : GA LA% : !
~~~~

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): GA2LA_C32, type code %, sha256 `68c1ebe6a570af2b…`

~~~~text
66: PHASE GA2LA_C32 % 2 2 1 !
67: CONST GA2LA_C32 : GA% LA : GA LA% : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models this phase_

## GA3LA5 (Ga–La)

- Id: `phase:ga-la:ga3la5`; status `assigned`
- Structure: Ba5Si3 · tP32 · P4/ncc (130); type `st:ba5si3-tp32`; 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_130_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Ga 0.3750, La 0.6250
- Stability: stable in 2 of 2 calculated diagram(s): 300–1099.94 K, x(La) 0.625–0.625
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:ga3la5)

Names (3): _corpus: _corpus:phase:ga-la:ga3la5  
_tdb: _tdb:GaLa-11Idb.tdb:GA3LA5, tdb:GaLa-22Bou.tdb:GA3LA5  


### TDB models of GA3LA5 (2): PHASE and CONSTITUENT statements as written

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): GA3LA5, type code %, sha256 `89d52a239cf65db0…`

~~~~text
72: PHASE GA3LA5 % 2 3 5 !
73: CONST GA3LA5 : GA : LA : !
~~~~

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): GA3LA5, type code %, sha256 `68c1ebe6a570af2b…`

~~~~text
76: PHASE GA3LA5 % 2 3 5 !
77: CONST GA3LA5 : GA : LA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models this phase_

## GA4LA (Ga–La)

- Id: `phase:ga-la:ga4la`; status `assigned`
- Structure: Ga4La · oP20 · Pmmm (47); type `st:ga4la-op20`; 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: Ga 0.8000, La 0.2000
- Stability: stable in 2 of 2 calculated diagram(s): 300–757.72 K, x(La) 0.2–0.2
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:ga4la)

Names (3): _corpus: _corpus:phase:ga-la:ga4la  
_tdb: _tdb:GaLa-11Idb.tdb:GA4LA, tdb:GaLa-22Bou.tdb:GA4LA  


### TDB models of GA4LA (2): PHASE and CONSTITUENT statements as written

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): GA4LA, type code %, sha256 `89d52a239cf65db0…`

~~~~text
57: PHASE GA4LA % 2 4 1 !
58: CONST GA4LA : GA : LA : !
~~~~

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): GA4LA, type code %, sha256 `68c1ebe6a570af2b…`

~~~~text
61: PHASE GA4LA % 2 4 1 !
62: CONST GA4LA : GA : LA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models this phase_

## GA6LA (Ga–La)

- Id: `phase:ga-la:ga6la`; status `assigned`
- Structure: Ga6Pu · tP14 · P4/nbm (125); type `st:ga6pu-tp14`; tier B: DFT-supported (unique MP + OQMD match); confidence high
- Stoichiometry: Ga 0.8571, La 0.1429
- Stability: stable in 2 of 2 calculated diagram(s): 300–752.95 K, x(La) 0.14286–0.14286
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:ga6la)

Names (5): _corpus: _corpus:phase:ga-la:ga6la  
_mp: _mp:mp-aaabkrtr  
_oqmd: _oqmd:oqmd-17250  
_tdb: _tdb:GaLa-11Idb.tdb:GA6LA, tdb:GaLa-22Bou.tdb:GA6LA  


### TDB models of GA6LA (2): PHASE and CONSTITUENT statements as written

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): GA6LA, type code %, sha256 `89d52a239cf65db0…`

~~~~text
52: PHASE GA6LA % 2 6 1 !
53: CONST GA6LA : GA : LA : !
~~~~

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): GA6LA, type code %, sha256 `68c1ebe6a570af2b…`

~~~~text
56: PHASE GA6LA % 2 6 1 !
57: CONST GA6LA : GA : LA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models this phase_

## GALA_B33 (Ga–La)

- Id: `phase:ga-la:gala-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-aaacfalp and oqmd-30292, space group 63
- Stoichiometry: Ga 0.5000, La 0.5000
- Stability: stable in 2 of 2 calculated diagram(s): 300–1294.64 K, x(La) 0.5–0.5
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:gala-b33)

Names (5): _corpus: _corpus:phase:ga-la:gala-b33  
_mp: _mp:mp-aaacfalp  
_oqmd: _oqmd:oqmd-30292  
_tdb: _tdb:GaLa-11Idb.tdb:GALA_B33, tdb:GaLa-22Bou.tdb:GALA_B33  


### TDB models of GALA_B33 (2): PHASE and CONSTITUENT statements as written

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): GALA_B33, type code %, sha256 `89d52a239cf65db0…`

~~~~text
67: PHASE GALA_B33 % 2 1 1 !
68: CONST GALA_B33 : GA : LA : !
~~~~

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): GALA_B33, type code %, sha256 `68c1ebe6a570af2b…`

~~~~text
71: PHASE GALA_B33 % 2 1 1 !
72: CONST GALA_B33 : GA : LA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models this phase_

## GALA3_L12 (Ga–La)

- Id: `phase:ga-la:gala3-l12`; status `assigned`
- Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type `st:l1-2-aucu3-cp4`; tier A: standard phase name; confidence high
- Stoichiometry: Ga 0.2500, La 0.7500
- Stability: stable in 2 of 2 calculated diagram(s): 300–885.78 K, x(La) 0.75–0.75
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:gala3-l12)

Names (3): _corpus: _corpus:phase:ga-la:gala3-l12  
_tdb: _tdb:GaLa-11Idb.tdb:GALA3_L12, tdb:GaLa-22Bou.tdb:GALA3_L12  


### TDB models of GALA3_L12 (2): PHASE and CONSTITUENT statements as written

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): GALA3_L12, type code %, sha256 `89d52a239cf65db0…`

~~~~text
77: PHASE GALA3_L12 % 2 1 3 !
78: CONST GALA3_L12 : GA : LA : !
~~~~

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): GALA3_L12, type code %, sha256 `68c1ebe6a570af2b…`

~~~~text
81: PHASE GALA3_L12 % 2 1 3 !
82: CONST GALA3_L12 : GA : LA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models this phase_

## HCP_A3 (Ga–La)

- Id: `phase:ga-la:hcp-a3`; status `assigned`
- Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high
- Stoichiometry: Ga 1.0000
- Stability: not stable in 2 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:hcp-a3)

Names (3): _corpus: _corpus:phase:ga-la:hcp-a3  
_tdb: _tdb:GaLa-11Idb.tdb:HCP_A3, tdb:GaLa-22Bou.tdb:HCP_A3  


### TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): HCP_A3, type code %A, sha256 `89d52a239cf65db0…`

~~~~text
37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : GA : VA : !
~~~~

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): HCP_A3, type code %A, sha256 `68c1ebe6a570af2b…`

~~~~text
41: PHASE HCP_A3 %A 2 1 0.5 !
42: CONST HCP_A3 : GA : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models this phase_

## LIQUID (Ga–La)

- Id: `phase:ga-la:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 301.74–2500 K, x(La) 0–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ga-la:liquid)

Names (3): _corpus: _corpus:phase:ga-la:liquid  
_tdb: _tdb:GaLa-11Idb.tdb:LIQUID, tdb:GaLa-22Bou.tdb:LIQUID  


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

[GaLa-11Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-11Idb.tdb): LIQUID, type code %, sha256 `89d52a239cf65db0…`

~~~~text
22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : GA LA : !
~~~~

[GaLa-22Bou.tdb](https://orchid-project.org/data/databases/sgte-binary/GaLa-22Bou.tdb): LIQUID, type code %, sha256 `68c1ebe6a570af2b…`

~~~~text
26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : GA GA2LA LA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2021.102387](https://doi.org/10.1016/j.calphad.2021.102387) S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).  
_assessment that models 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).