# Ce–Ga phases > Ce–Ga system: 12 phases (tier A 8, tier C 2, liquid 1, needs_review 1); 10 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/CE-GA.html · Markdown: https://data.orchid-project.org/phases/pages/CE-GA.md 12 phases (tier A 8, tier C 2, liquid 1, needs_review 1); 10 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=CE-GA) · [full JSON](https://data.orchid-project.org/phases/systems/CE-GA.json) · [Ce–Ga system page](https://data.orchid-project.org/systems/CE-GA.html) · [Markdown](https://data.orchid-project.org/phases/pages/CE-GA.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Ce–Ga system (12) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [ORTHORHOMBIC_A11](#phase-ce-ga-a11-orthorhombic); _phase:ce-ga: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(Ga) 1–1 | 5 | 2 | | [BCC_A2](#phase-ce-ga-bcc-a2); _phase:ce-ga:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 1000–1085 K, x(Ga) 0–0 | 3 | 2 | | [CE3GA_L12](#phase-ce-ga-ce3ga-l12); _phase:ce-ga:ce3ga-l12_ | AuCu3 · L1_2 · cP4 · Pm-3m (221) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–850 K, x(Ga) 0.25–0.25 | 12 | 2 | | [CE3GA2](#phase-ce-ga-ce3ga2); _phase:ce-ga:ce3ga2_ | Ba5Si3 · tP32 · P4/ncc (130) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1147.03 K, x(Ga) 0.4–0.4 | 12 | 2 | | [CEGA_B33](#phase-ce-ga-cega-b33); _phase:ce-ga:cega-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1253.2 K, x(Ga) 0.5–0.5 | 13 | 2 | | [CEGA2_C32](#phase-ce-ga-cega2-c32); _phase:ce-ga:cega2-c32_ | AlB2 · C32 · hP3 · P6/mmm (191) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–2499.57 K, x(Ga) 0.66664–0.7684 | 28 | 2 | | [CEGA6_HT](#phase-ce-ga-cega6-ht); _phase:ce-ga:cega6-ht_ | | needs_review | stable in 2 of 2 calculated diagram(s): 748.26–929.57 K, x(Ga) 0.85714–0.85714 | 8 | 2 | | [CEGA6_LT](#phase-ce-ga-cega6-lt); _phase:ce-ga:cega6-lt_ | Ga6Pu · tP14 · P4/nbm (125) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–749.86 K, x(Ga) 0.85714–0.85714 | 12 | 2 | | [DHCP](#phase-ce-ga-dhcp-a3); _phase:ce-ga:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 | | [FCC_A1](#phase-ce-ga-fcc-a1); _phase:ce-ga:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1000 K, x(Ga) 0–0 | 7 | 2 | | [HCP_A3](#phase-ce-ga-hcp-a3); _phase:ce-ga: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-ce-ga-liquid); _phase:ce-ga:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 300.44–2500 K, x(Ga) 0–1 | 49 | 2 | ## ORTHORHOMBIC_A11 (Ce–Ga) - Id: `phase:ce-ga: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(Ga) 1–1 - Literature: 5 values (5 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-ga:a11-orthorhombic) Names (6): _corpus: _corpus:phase:ce-ga:a11-orthorhombic, corpus:phase:ce-ga:orthorhombic-a11 _paper: _paper:10.1007/s00706-019-02420-8:orth.(Ga), paper:10.1007/s11669-013-0261-y:(Ga) _tdb: _tdb:CeGa-13Idb.tdb:ORTHORHOMBIC_A11, tdb:CeGa-19Liu.tdb:ORTHORHOMBIC_A11 ### TDB models of ORTHORHOMBIC_A11 (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): ORTHORHOMBIC_A11, type code %, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 61: PHASE ORTHORHOMBIC_A11 % 1 1 ! 62: CONST ORTHORHOMBIC_A11 : GA : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): ORTHORHOMBIC_A11, type code %, sha256 `30f0cb2703063a0c…` ~~~~text 45: PHASE ORTHORHOMBIC_A11 % 1 1 ! 46: CONST ORTHORHOMBIC_A11 : GA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ ## BCC_A2 (Ce–Ga) - Id: `phase:ce-ga: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): 1000–1085 K, x(Ga) 0–0 - Literature: 3 values (3 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-ga:bcc-a2) Names (4): _corpus: _corpus:phase:ce-ga:bcc-a2 _paper: _paper:10.1007/s00706-019-02420-8:bcc (Ce) _tdb: _tdb:CeGa-13Idb.tdb:BCC_A2, tdb:CeGa-19Liu.tdb:BCC_A2 ### TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): BCC_A2, type code %B, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 46: PHASE BCC_A2 %B 2 1 3 ! 47: CONST BCC_A2 : CE% GA : VA : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): BCC_A2, type code %B, sha256 `30f0cb2703063a0c…` ~~~~text 30: PHASE BCC_A2 %B 2 1 3 ! 31: CONST BCC_A2 : CE% GA : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase; cited as the source of values for this phase_ ## CE3GA_L12 (Ce–Ga) - Id: `phase:ce-ga:ce3ga-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: Ce 0.7500, Ga 0.2500 - Stability: stable in 2 of 2 calculated diagram(s): 300–850 K, x(Ga) 0.25–0.25 - Literature: 12 values (12 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-ga:ce3ga-l12) Names (5): _corpus: _corpus:phase:ce-ga:ce3ga-l12 _paper: _paper:10.1007/s00706-019-02420-8:Ce3Ga, paper:10.1007/s11669-013-0261-y:Ce3Ga _tdb: _tdb:CeGa-13Idb.tdb:CE3GA_L12, tdb:CeGa-19Liu.tdb:CE3GA_L12 ### TDB models of CE3GA_L12 (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): CE3GA_L12, type code %, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 66: PHASE CE3GA_L12 % 2 3 1 ! 67: CONST CE3GA_L12 : CE : GA : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): CE3GA_L12, type code %, sha256 `30f0cb2703063a0c…` ~~~~text 50: PHASE CE3GA_L12 % 2 3 1 ! 51: CONST CE3GA_L12 : CE : GA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase; cited as the source of values for 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_ ## CE3GA2 (Ce–Ga) - Id: `phase:ce-ga:ce3ga2`; 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 (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Ce 0.6000, Ga 0.4000 - Stability: stable in 2 of 2 calculated diagram(s): 300–1147.03 K, x(Ga) 0.4–0.4 - Literature: 12 values (12 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-ga:ce3ga2) Names (5): _corpus: _corpus:phase:ce-ga:ce3ga2 _paper: _paper:10.1007/s00706-019-02420-8:Ce3Ga2, paper:10.1007/s11669-013-0261-y:Ce3Ga2 _tdb: _tdb:CeGa-13Idb.tdb:CE3GA2, tdb:CeGa-19Liu.tdb:CE3GA2 ### TDB models of CE3GA2 (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): CE3GA2, type code %, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 71: PHASE CE3GA2 % 2 3 2 ! 72: CONST CE3GA2 : CE : GA : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): CE3GA2, type code %, sha256 `30f0cb2703063a0c…` ~~~~text 55: PHASE CE3GA2 % 2 3 2 ! 56: CONST CE3GA2 : CE : GA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase; reports values for this phase_ ## CEGA_B33 (Ce–Ga) - Id: `phase:ce-ga:cega-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-aaacfyim and oqmd-29083, space group 63 - Stoichiometry: Ce 0.5000, Ga 0.5000 - Stability: stable in 2 of 2 calculated diagram(s): 300–1253.2 K, x(Ga) 0.5–0.5 - Literature: 13 values (13 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-ga:cega-b33) Names (7): _corpus: _corpus:phase:ce-ga:cega-b33 _mp: _mp:mp-aaacfyim _oqmd: _oqmd:oqmd-29083 _paper: _paper:10.1007/s00706-019-02420-8:CeGa, paper:10.1007/s11669-013-0261-y:CeGa _tdb: _tdb:CeGa-13Idb.tdb:CEGA_B33, tdb:CeGa-19Liu.tdb:CEGA_B33 ### TDB models of CEGA_B33 (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): CEGA_B33, type code %, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 76: PHASE CEGA_B33 % 2 1 1 ! 77: CONST CEGA_B33 : CE : GA : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): CEGA_B33, type code %, sha256 `30f0cb2703063a0c…` ~~~~text 60: PHASE CEGA_B33 % 2 1 1 ! 61: CONST CEGA_B33 : CE : GA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase; reports values for this phase_ ## CEGA2_C32 (Ce–Ga) - Id: `phase:ce-ga:cega2-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 CeGa-19Liu.tdb also describes the disordered state - Stability: stable in 2 of 2 calculated diagram(s): 300–2499.57 K, x(Ga) 0.66664–0.7684 - Literature: 28 values (28 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-ga:cega2-c32) Names (5): _corpus: _corpus:phase:ce-ga:cega2-c32 _paper: _paper:10.1007/s00706-019-02420-8:CeGa2, paper:10.1007/s11669-013-0261-y:CeGa2 _tdb: _tdb:CeGa-13Idb.tdb:CEGA2_C32, tdb:CeGa-19Liu.tdb:CEGA2_C32 ### TDB models of CEGA2_C32 (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): CEGA2_C32, type code %, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 81: PHASE CEGA2_C32 % 2 1 2 ! 82: CONST CEGA2_C32 : CE% GA : GA : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): CEGA2_C32, type code %, sha256 `30f0cb2703063a0c…` ~~~~text 65: PHASE CEGA2_C32 % 2 1 2 ! 66: CONST CEGA2_C32 : CE% GA : CE GA% : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/0022-5088(79)90057-2](https://doi.org/10.1016/0022-5088%2879%2990057-2) D Dayan, J Pelleg, R Guisser, The cerium-gallium system, Journal of the Less Common Metals 68, 199-205 (1979). _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_ ## CEGA6_HT (Ce–Ga) - Id: `phase:ce-ga:cega6-ht`; 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_mp): P4/nbm (125) — on-hull MP CeGa6 at x(GA)=0.8571 - Candidate (dft_oqmd): P4/nbm (125) — on-hull OQMD Ce1 Ga6 at x(GA)=0.8571 - Candidate (literature_printed): (CeGa6-ht) · ? — printed with a label mapped to this phase - Candidate (sgte_mmc2): (CeGa6-ht) — Hallstedt 2025 mmc2 row for CEGA6_HT: CeGa6 (HT) - Stoichiometry: Ce 0.1429, Ga 0.8571 - Stability: stable in 2 of 2 calculated diagram(s): 748.26–929.57 K, x(Ga) 0.85714–0.85714 - Literature: 8 values (8 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-ga:cega6-ht) Names (5): _corpus: _corpus:phase:ce-ga:cega6-ht _paper: _paper:10.1007/s00706-019-02420-8:β-CeGa6, paper:10.1007/s11669-013-0261-y:CeGa6_HT _tdb: _tdb:CeGa-13Idb.tdb:CEGA6_HT, tdb:CeGa-19Liu.tdb:CEGA6_HT ### TDB models of CEGA6_HT (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): CEGA6_HT, type code %, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 91: PHASE CEGA6_HT % 2 1 6 ! 92: CONST CEGA6_HT : CE : GA : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): CEGA6_HT, type code %, sha256 `30f0cb2703063a0c…` ~~~~text 75: PHASE CEGA6_HT % 2 1 6 ! 76: CONST CEGA6_HT : CE : GA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase; reports values for this phase_ ## CEGA6_LT (Ce–Ga) - Id: `phase:ce-ga:cega6-lt`; 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_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Ce 0.1429, Ga 0.8571 - Stability: stable in 2 of 2 calculated diagram(s): 300–749.86 K, x(Ga) 0.85714–0.85714 - Literature: 12 values (12 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-ga:cega6-lt) Names (6): _corpus: _corpus:phase:ce-ga:cega6-lt _paper: _paper:10.1007/s00706-019-02420-8:α-CeGa6, paper:10.1007/s11669-013-0261-y:CeGa6-LT, paper:10.1007/s11669-013-0261-y:CeGa6_LT _tdb: _tdb:CeGa-13Idb.tdb:CEGA6_LT, tdb:CeGa-19Liu.tdb:CEGA6_LT ### TDB models of CEGA6_LT (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): CEGA6_LT, type code %, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 86: PHASE CEGA6_LT % 2 1 6 ! 87: CONST CEGA6_LT : CE : GA : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): CEGA6_LT, type code %, sha256 `30f0cb2703063a0c…` ~~~~text 70: PHASE CEGA6_LT % 2 1 6 ! 71: CONST CEGA6_LT : CE : GA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase; reports values for this phase_ ## DHCP (Ce–Ga) - Id: `phase:ce-ga: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: Ce 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:ce-ga:dhcp-a3) Names (3): _corpus: _corpus:phase:ce-ga:dhcp-a3 _tdb: _tdb:CeGa-13Idb.tdb:DHCP, tdb:CeGa-19Liu.tdb:DHCP ### TDB models of DHCP (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): DHCP, type code %, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 56: PHASE DHCP % 1 1 ! 57: CONST DHCP : CE : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): DHCP, type code %, sha256 `30f0cb2703063a0c…` ~~~~text 40: PHASE DHCP % 1 1 ! 41: CONST DHCP : CE : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase_ - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase_ ## FCC_A1 (Ce–Ga) - Id: `phase:ce-ga: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): 300–1000 K, x(Ga) 0–0 - Literature: 7 values (7 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-ga:fcc-a1) Names (5): _corpus: _corpus:phase:ce-ga:fcc-a1 _paper: _paper:10.1007/s00706-019-02420-8:fcc (Ce), paper:10.1007/s00706-019-02420-8:fcc(Ce) _tdb: _tdb:CeGa-13Idb.tdb:FCC_A1, tdb:CeGa-19Liu.tdb:FCC_A1 ### TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): FCC_A1, type code %A, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 41: PHASE FCC_A1 %A 2 1 1 ! 42: CONST FCC_A1 : CE% GA : VA : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): FCC_A1, type code %A, sha256 `30f0cb2703063a0c…` ~~~~text 25: PHASE FCC_A1 %A 2 1 1 ! 26: CONST FCC_A1 : CE% GA : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase; 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_ ## HCP_A3 (Ce–Ga) - Id: `phase:ce-ga: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: 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:ce-ga:hcp-a3) Names (3): _corpus: _corpus:phase:ce-ga:hcp-a3 _tdb: _tdb:CeGa-13Idb.tdb:HCP_A3, tdb:CeGa-19Liu.tdb:HCP_A3 ### TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): HCP_A3, type code %A, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 51: PHASE HCP_A3 %A 2 1 0.5 ! 52: CONST HCP_A3 : CE GA : VA : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): HCP_A3, type code %A, sha256 `30f0cb2703063a0c…` ~~~~text 35: PHASE HCP_A3 %A 2 1 0.5 ! 36: CONST HCP_A3 : CE GA : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase_ - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase_ ## LIQUID (Ce–Ga) - Id: `phase:ce-ga:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 2 of 2 calculated diagram(s): 300.44–2500 K, x(Ga) 0–1 - Literature: 49 values (49 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-ga:liquid) Names (6): _corpus: _corpus:phase:ce-ga:liquid _paper: _paper:10.1007/s00706-019-02420-8:L, paper:10.1007/s11669-013-0261-y:Liq, paper:10.1007/s11669-013-0261-y:liquid _tdb: _tdb:CeGa-13Idb.tdb:LIQUID, tdb:CeGa-19Liu.tdb:LIQUID ### TDB models of LIQUID (2): PHASE and CONSTITUENT statements as written [CeGa-13Idb.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-13Idb.tdb): LIQUID, type code %, sha256 `dbc99ec4eb8fcd0e…` ~~~~text 36: PHASE LIQUID:L % 1 1 ! 37: CONST LIQUID:L : CE CEGA GA : ! ~~~~ [CeGa-19Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeGa-19Liu.tdb): LIQUID, type code %, sha256 `30f0cb2703063a0c…` ~~~~text 20: PHASE LIQUID:L % 1 1 ! 21: CONST LIQUID:L : CE GA : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/s00706-019-02420-8](https://doi.org/10.1007/s00706-019-02420-8) Jinming Liu, Fei Li, Jinping Liu, Xu Zhang, Tahir Ahmad, Tongxiang Liang, Thermodynamic description of the Ce–Ga and Ga–Gd systems, Monatsh Chem 150, 1225-1233 (2019). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-013-0261-y](https://doi.org/10.1007/s11669-013-0261-y) Mohamed Idbenali, Colette Servant, M’barek Feddaoui, Thermodynamic Description of the Ce-Ga Binary System, J. Phase Equilib. Diffus. 34, 467-473 (2013). _assessment that models this phase; cited as the source of values for 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:10.1016/0022-5088(79)90057-2](https://doi.org/10.1016/0022-5088%2879%2990057-2) D Dayan, J Pelleg, R Guisser, The cerium-gallium system, Journal of the Less Common Metals 68, 199-205 (1979). _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).