Ga–La phases

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 · full JSON · Ga–La system page · Markdown · field reference

Phases of the Ga–La system (12)
Phase	Structure	Basis	Stability (calculated)	TDB models
ORTHORHOMBIC_A11 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	2
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	2
DHCP 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	2
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	2
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	2
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	2
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	2
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	2
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	2
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	2
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)	2
LIQUID phase:ga-la:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 301.74–2500 K, x(La) 0–1	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

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: ORTHORHOMBIC_A11, type code %, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: ORTHORHOMBIC_A11, type code %, sha256 68c1ebe6a570af2b…

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 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

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: BCC_A2, type code %B, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: BCC_A2, type code %B, sha256 68c1ebe6a570af2b…

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 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

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: DHCP, type code %, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: DHCP, type code %, sha256 68c1ebe6a570af2b…

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

Example references (1 of 1; assessments first):

doi: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

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: FCC_A1, type code %A, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: FCC_A1, type code %A, sha256 68c1ebe6a570af2b…

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 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

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: GA2LA_C32, type code %, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: GA2LA_C32, type code %, sha256 68c1ebe6a570af2b…

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 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
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

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: GA3LA5, type code %, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: GA3LA5, type code %, sha256 68c1ebe6a570af2b…

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 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
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

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: GA4LA, type code %, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: GA4LA, type code %, sha256 68c1ebe6a570af2b…

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 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

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: GA6LA, type code %, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: GA6LA, type code %, sha256 68c1ebe6a570af2b…

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 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

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: GALA_B33, type code %, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: GALA_B33, type code %, sha256 68c1ebe6a570af2b…

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 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

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: GALA3_L12, type code %, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: GALA3_L12, type code %, sha256 68c1ebe6a570af2b…

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 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

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: HCP_A3, type code %A, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: HCP_A3, type code %A, sha256 68c1ebe6a570af2b…

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 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

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: LIQUID, type code %, sha256 89d52a239cf65db0…

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

GaLa-22Bou.tdb: LIQUID, type code %, sha256 68c1ebe6a570af2b…

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 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). doi: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). doi: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.

@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}
}