Ga–Tb phases

10 phases (tier A 7, tier C 1, liquid 1, needs_review 1); 9 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–Tb system page · Markdown · field reference

Phases of the Ga–Tb system (10)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
ORTHORHOMBIC_A11 phase:ga-tb: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(Tb) 0–0	2	1
BCC_A2 phase:ga-tb:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1561.96–2499.46 K, x(Tb) 0.99996–1	0	1
FCC_A1 phase:ga-tb:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
GA2TB_C32 phase:ga-tb:ga2tb-c32	AlB2 · C32 · hP3 · P6/mmm (191)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1657.31 K, x(Tb) 0.33333–0.33333	6	1
GA3TB phase:ga-tb:ga3tb		needs_review	stable in 1 of 1 calculated diagram(s): 300–1283.02 K, x(Tb) 0.25–0.25	5	1
GA3TB5_D8L phase:ga-tb:ga3tb5-d8l	Cr5B3 · D8_l · tI32 · I4/mcm (140)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1397.77 K, x(Tb) 0.625–0.625	4	1
GA6TB phase:ga-tb:ga6tb	Ga6Pu · tP14 · P4/nbm (125)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–669.9 K, x(Tb) 0.14286–0.14286	5	1
GATB_B33 phase:ga-tb:gatb-b33	CrB · B33 · oC8 · Cmcm (63)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1488.78 K, x(Tb) 0.5–0.5	4	1
HCP_A3 phase:ga-tb:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1626.96 K, x(Tb) 0.99986–1	2	1
LIQUID phase:ga-tb:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 302.91–2500 K, x(Tb) 0–1	14	1

ORTHORHOMBIC_A11 (Ga–Tb)

Id: phase:ga-tb: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(Tb) 0–0
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ga-tb:a11-orthorhombic, corpus:phase:ga-tb:orthorhombic-a11
paper: paper:10.1016/j.jallcom.2007.09.067:orth (Ga)
tdb: tdb:GaTb-08Jun.tdb:ORTHORHOMBIC_A11

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

GaTb-08Jun.tdb: ORTHORHOMBIC_A11, type code %, sha256 3ddebb20811fd6e2…

45: PHASE ORTHORHOMBIC_A11 % 1 1 !
46: CONST ORTHORHOMBIC_A11 : GA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2007.09.067 Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, Thermodynamic assessment of the Ga–Sc and Ga–Tb systems, Journal of Alloys and Compounds 463, 511-515 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(79)90170-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

BCC_A2 (Ga–Tb)

Id: phase:ga-tb:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 1561.96–2499.46 K, x(Tb) 0.99996–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ga-tb:bcc-a2
tdb: tdb:GaTb-08Jun.tdb:BCC_A2

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

GaTb-08Jun.tdb: BCC_A2, type code %B, sha256 3ddebb20811fd6e2…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : GA TB% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2007.09.067 Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, Thermodynamic assessment of the Ga–Sc and Ga–Tb systems, Journal of Alloys and Compounds 463, 511-515 (2008).
assessment that models this phase

FCC_A1 (Ga–Tb)

Id: phase:ga-tb:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stoichiometry: Ga 1.0000
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ga-tb:fcc-a1
tdb: tdb:GaTb-08Jun.tdb:FCC_A1

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

GaTb-08Jun.tdb: FCC_A1, type code %A, sha256 3ddebb20811fd6e2…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : GA : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2007.09.067 Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, Thermodynamic assessment of the Ga–Sc and Ga–Tb systems, Journal of Alloys and Compounds 463, 511-515 (2008).
assessment that models this phase

GA2TB_C32 (Ga–Tb)

Id: phase:ga-tb:ga2tb-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-aaaaadzg and oqmd-89640, space group 191
Stoichiometry: Ga 0.6667, Tb 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1657.31 K, x(Tb) 0.33333–0.33333
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ga-tb:ga2tb-c32
mp: mp:mp-aaaaadzg
oqmd: oqmd:oqmd-89640
paper: paper:10.1016/j.jallcom.2007.09.067:Ga2Tb
tdb: tdb:GaTb-08Jun.tdb:GA2TB_C32

TDB models of GA2TB_C32 (1): PHASE and CONSTITUENT statements as written

GaTb-08Jun.tdb: GA2TB_C32, type code %, sha256 3ddebb20811fd6e2…

61: PHASE GA2TB_C32 % 2 2 1 !
62: CONST GA2TB_C32 : GA : TB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2007.09.067 Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, Thermodynamic assessment of the Ga–Sc and Ga–Tb systems, Journal of Alloys and Compounds 463, 511-515 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(79)90170-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:10.1016/0022-5088(81)90179-x S. Cirafici, E. Franceschi, Stacking of close-packed AB3 layers in RGa3 compounds (R ≡ heavy rare earth), Journal of the Less Common Metals 77, 269-280 (1981).
cited as the source of values for this phase

GA3TB (Ga–Tb)

Id: phase:ga-tb:ga3tb; 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 TbGa3 at x(TB)=0.2500
Candidate (dft_oqmd): P63/mmc (194) — on-hull OQMD Ga3 Tb1 at x(TB)=0.2500
Candidate (literature_printed): AuCu3 · cP4 — printed with a label mapped to this phase
Candidate (sgte_mmc2): Ni3Sn · D0_19 · hP8 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for GA3TB: Ga3Tb (low T)
Candidate (sgte_mmc2): AuCu3 · L1_2 · cP4 · Pm-3m (221) — Hallstedt 2025 mmc2 row for GA3TB: Ga3Tb, high T
Candidate (tdb_comment): AuCu3 · cP4 · Pm-3m, L1_2 — GaTb-08Jun.tdb: 'Prototype AuCu3 (cP4, Pm-3m, L1_2); high T'
Candidate (tdb_comment): CdMg3 · hP8 · P6_3/mmc — GaTb-08Jun.tdb: 'Prototype CdMg3 (hP8, P6_3/mmc); low T'
Stoichiometry: Ga 0.7500, Tb 0.2500
Stability: stable in 1 of 1 calculated diagram(s): 300–1283.02 K, x(Tb) 0.25–0.25
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ga-tb:ga3tb
paper: paper:10.1016/j.jallcom.2007.09.067:Ga3Tb
tdb: tdb:GaTb-08Jun.tdb:GA3TB

TDB models of GA3TB (1): PHASE and CONSTITUENT statements as written

GaTb-08Jun.tdb: GA3TB, type code %, sha256 3ddebb20811fd6e2…

56: PHASE GA3TB % 2 3 1 !
57: CONST GA3TB : GA : TB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2007.09.067 Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, Thermodynamic assessment of the Ga–Sc and Ga–Tb systems, Journal of Alloys and Compounds 463, 511-515 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(81)90179-x S. Cirafici, E. Franceschi, Stacking of close-packed AB3 layers in RGa3 compounds (R ≡ heavy rare earth), Journal of the Less Common Metals 77, 269-280 (1981).
cited as the source of values for this phase
doi:10.1016/0022-5088(81)90266-6 Joshua Pelleg, G. Kimmel, D. Dayan, RGa6 (R≡ rare earth atom), a common intermetallic compound of the R-Ga systems, Journal of the Less Common Metals 81, 33-44 (1981).
cited as the source of values for this phase

GA3TB5_D8L (Ga–Tb)

Id: phase:ga-tb:ga3tb5-d8l; status assigned
Structure: Cr5B3 · D8_l · tI32 · I4/mcm (140); type st:d8-l-cr5b3-ti32; tier A: standard phase name; confidence high
Stoichiometry: Ga 0.3750, Tb 0.6250
Stability: stable in 1 of 1 calculated diagram(s): 300–1397.77 K, x(Tb) 0.625–0.625
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ga-tb:ga3tb5-d8l
paper: paper:10.1016/j.jallcom.2007.09.067:Ga3Tb5
tdb: tdb:GaTb-08Jun.tdb:GA3TB5_D8L

TDB models of GA3TB5_D8L (1): PHASE and CONSTITUENT statements as written

GaTb-08Jun.tdb: GA3TB5_D8L, type code %, sha256 3ddebb20811fd6e2…

71: PHASE GA3TB5_D8L % 2 3 5 !
72: CONST GA3TB5_D8L : GA : TB : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2007.09.067 Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, Thermodynamic assessment of the Ga–Sc and Ga–Tb systems, Journal of Alloys and Compounds 463, 511-515 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(79)90170-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

GA6TB (Ga–Tb)

Id: phase:ga-tb:ga6tb; 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
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, Tb 0.1429
Stability: stable in 1 of 1 calculated diagram(s): 300–669.9 K, x(Tb) 0.14286–0.14286
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ga-tb:ga6tb
paper: paper:10.1016/j.jallcom.2007.09.067:Ga6Tb
tdb: tdb:GaTb-08Jun.tdb:GA6TB

TDB models of GA6TB (1): PHASE and CONSTITUENT statements as written

GaTb-08Jun.tdb: GA6TB, type code %, sha256 3ddebb20811fd6e2…

50: PHASE GA6TB % 2 6 1 !
51: CONST GA6TB : GA : TB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2007.09.067 Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, Thermodynamic assessment of the Ga–Sc and Ga–Tb systems, Journal of Alloys and Compounds 463, 511-515 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(81)90266-6 Joshua Pelleg, G. Kimmel, D. Dayan, RGa6 (R≡ rare earth atom), a common intermetallic compound of the R-Ga systems, Journal of the Less Common Metals 81, 33-44 (1981).
cited as the source of values for this phase
doi:10.1016/0022-5088(79)90170-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

GATB_B33 (Ga–Tb)

Id: phase:ga-tb:gatb-b33; status assigned
Structure: CrB · B33 · oC8 · Cmcm (63); type st:b33-crb-oc8; tier A: standard phase name; confidence high
Stoichiometry: Ga 0.5000, Tb 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–1488.78 K, x(Tb) 0.5–0.5
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ga-tb:gatb-b33
paper: paper:10.1016/j.jallcom.2007.09.067:GaTb
tdb: tdb:GaTb-08Jun.tdb:GATB_B33

TDB models of GATB_B33 (1): PHASE and CONSTITUENT statements as written

GaTb-08Jun.tdb: GATB_B33, type code %, sha256 3ddebb20811fd6e2…

66: PHASE GATB_B33 % 2 1 1 !
67: CONST GATB_B33 : GA : TB : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2007.09.067 Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, Thermodynamic assessment of the Ga–Sc and Ga–Tb systems, Journal of Alloys and Compounds 463, 511-515 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(79)90170-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–Tb)

Id: phase:ga-tb:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 300–1626.96 K, x(Tb) 0.99986–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ga-tb:hcp-a3
paper: paper:10.1016/j.jallcom.2007.09.067:hcp (Tb)
tdb: tdb:GaTb-08Jun.tdb:HCP_A3

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

GaTb-08Jun.tdb: HCP_A3, type code %, sha256 3ddebb20811fd6e2…

40: PHASE HCP_A3 % 2 1 0.5 !
41: CONST HCP_A3 : GA TB% : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2007.09.067 Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, Thermodynamic assessment of the Ga–Sc and Ga–Tb systems, Journal of Alloys and Compounds 463, 511-515 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(79)90170-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–Tb)

Id: phase:ga-tb: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(Tb) 0–1
Literature: 14 values (14 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ga-tb:liquid
paper: paper:10.1016/j.jallcom.2007.09.067:L
tdb: tdb:GaTb-08Jun.tdb:LIQUID

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

GaTb-08Jun.tdb: LIQUID, type code %, sha256 3ddebb20811fd6e2…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : GA TB : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2007.09.067 Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, Thermodynamic assessment of the Ga–Sc and Ga–Tb systems, Journal of Alloys and Compounds 463, 511-515 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(79)90170-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:10.1016/0022-5088(81)90179-x S. Cirafici, E. Franceschi, Stacking of close-packed AB3 layers in RGa3 compounds (R ≡ heavy rare earth), Journal of the Less Common Metals 77, 269-280 (1981).
cited as the source of values for this phase
doi:10.1016/0022-5088(81)90266-6 Joshua Pelleg, G. Kimmel, D. Dayan, RGa6 (R≡ rare earth atom), a common intermetallic compound of the R-Ga systems, Journal of the Less Common Metals 81, 33-44 (1981).
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). 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}
}