# Am–Ga phases > Am–Ga system: 21 phases (tier A 8, tier C 1, liquid 1, needs_review 11); 20 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/AM-GA.html · Markdown: https://data.orchid-project.org/phases/pages/AM-GA.md 21 phases (tier A 8, tier C 1, liquid 1, needs_review 11); 20 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=AM-GA) · [full JSON](https://data.orchid-project.org/phases/systems/AM-GA.json) · [Am–Ga system page](https://data.orchid-project.org/systems/AM-GA.html) · [Markdown](https://data.orchid-project.org/phases/pages/AM-GA.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Am–Ga system (21) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [ORTHORHOMBIC_A11](#phase-am-ga-a11-orthorhombic); _phase:am-ga: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(Ga) 1–1 | 0 | 1 | | [AM2GA15](#phase-am-ga-am2ga15); _phase:am-ga:am2ga15_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–347.03 K, x(Ga) 0.88235–0.88235 | 0 | 1 | | [AM2GA3](#phase-am-ga-am2ga3); _phase:am-ga:am2ga3_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–885.32 K, x(Ga) 0.6–0.6 | 0 | 1 | | [AM2GA7](#phase-am-ga-am2ga7); _phase:am-ga:am2ga7_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–502.79 K, x(Ga) 0.77778–0.77778 | 0 | 1 | | [AM3GA_ALPHA](#phase-am-ga-am3ga-alpha); _phase:am-ga:am3ga-alpha_ | Pb3Sr · tP4 · P4/mmm (123) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–634.73 K, x(Ga) 0.25–0.25 | 0 | 1 | | [AM3GA_L12](#phase-am-ga-am3ga-l12); _phase:am-ga:am3ga-l12_ | AuCu3 · L1_2 · cP4 · Pm-3m (221) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 634.73–924.3 K, x(Ga) 0.25–0.25 | 0 | 1 | | [AM3GA11](#phase-am-ga-am3ga11); _phase:am-ga:am3ga11_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–666.82 K, x(Ga) 0.78571–0.78571 | 0 | 1 | | [AM5GA3](#phase-am-ga-am5ga3); _phase:am-ga:am5ga3_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–997.54 K, x(Ga) 0.375–0.375 | 0 | 1 | | [AMGA_ALPHA](#phase-am-ga-amga-alpha); _phase:am-ga:amga-alpha_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–841.57 K, x(Ga) 0.5–0.5 | 0 | 1 | | [AMGA_BETA](#phase-am-ga-amga-beta); _phase:am-ga:amga-beta_ | | needs_review | stable in 1 of 1 calculated diagram(s): 841.57–1137.94 K, x(Ga) 0.5–0.5 | 0 | 1 | | [AMGA2_C32](#phase-am-ga-amga2-c32); _phase:am-ga:amga2-c32_ | AlB2 · C32 · hP3 · P6/mmm (191) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1610.6 K, x(Ga) 0.66667–0.66667 | 0 | 1 | | [AMGA3_ALPHA](#phase-am-ga-amga3-alpha); _phase:am-ga:amga3-alpha_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–990 K, x(Ga) 0.75–0.75 | 0 | 1 | | [AMGA3_BETA](#phase-am-ga-amga3-beta); _phase:am-ga:amga3-beta_ | | needs_review | stable in 1 of 1 calculated diagram(s): 990–1196.17 K, x(Ga) 0.75–0.75 | 0 | 1 | | [AMGA3_GAMMA](#phase-am-ga-amga3-gamma); _phase:am-ga:amga3-gamma_ | | needs_review | stable in 1 of 1 calculated diagram(s): 1196.17–1551.99 K, x(Ga) 0.75–0.75 | 0 | 1 | | [AMGA4_D1B](#phase-am-ga-amga4-d1b); _phase:am-ga:amga4-d1b_ | Al4U · D1_b · oI20 · Imma (74) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–745.19 K, x(Ga) 0.8–0.8 | 0 | 1 | | [AMGA6](#phase-am-ga-amga6); _phase:am-ga:amga6_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–588.63 K, x(Ga) 0.85714–0.85714 | 0 | 1 | | [BCC_A2](#phase-am-ga-bcc-a2); _phase:am-ga:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1350.04–1488.54 K, x(Ga) 0–0 | 0 | 1 | | [DHCP](#phase-am-ga-dhcp-a3); _phase:am-ga:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1254.47 K, x(Ga) 0–0 | 0 | 1 | | [FCC_A1](#phase-am-ga-fcc-a1); _phase:am-ga:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 786.56–1351.04 K, x(Ga) 0–0.06164 | 0 | 1 | | [HCP_A3](#phase-am-ga-hcp-a3); _phase:am-ga:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 | | [LIQUID](#phase-am-ga-liquid); _phase:am-ga:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 302.91–2500 K, x(Ga) 0–1 | 0 | 1 | ## ORTHORHOMBIC_A11 (Am–Ga) - Id: `phase:am-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 1 of 1 calculated diagram(s): 300–302.91 K, x(Ga) 1–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:a11-orthorhombic) Names (2): _corpus: _corpus:phase:am-ga:a11-orthorhombic _tdb: _tdb:AmGa-16Per.tdb:ORTHORHOMBIC_A11 ### TDB models of ORTHORHOMBIC_A11 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): ORTHORHOMBIC_A11, type code %, sha256 `36dbebc1ac721066…` ~~~~text 52: PHASE ORTHORHOMBIC_A11 % 1 1 ! 53: CONST ORTHORHOMBIC_A11 : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AM2GA15 (Am–Ga) - Id: `phase:am-ga:am2ga15`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete - Candidate (sgte_mmc2): (Am2Ga15) — Hallstedt 2025 mmc2 row for AM2GA15: Am2Ga15 - Stoichiometry: Am 0.1176, Ga 0.8824 - Stability: stable in 1 of 1 calculated diagram(s): 300–347.03 K, x(Ga) 0.88235–0.88235 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:am2ga15) Names (2): _corpus: _corpus:phase:am-ga:am2ga15 _tdb: _tdb:AmGa-16Per.tdb:AM2GA15 ### TDB models of AM2GA15 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AM2GA15, type code %, sha256 `36dbebc1ac721066…` ~~~~text 127: PHASE AM2GA15 % 2 2 15 ! 128: CONST AM2GA15 : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AM2GA3 (Am–Ga) - Id: `phase:am-ga:am2ga3`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete - Candidate (sgte_mmc2): (Am2Ga3) — Hallstedt 2025 mmc2 row for AM2GA3: Am2Ga3 - Stoichiometry: Am 0.4000, Ga 0.6000 - Stability: stable in 1 of 1 calculated diagram(s): 300–885.32 K, x(Ga) 0.6–0.6 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:am2ga3) Names (2): _corpus: _corpus:phase:am-ga:am2ga3 _tdb: _tdb:AmGa-16Per.tdb:AM2GA3 ### TDB models of AM2GA3 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AM2GA3, type code %, sha256 `36dbebc1ac721066…` ~~~~text 82: PHASE AM2GA3 % 2 2 3 ! 83: CONST AM2GA3 : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AM2GA7 (Am–Ga) - Id: `phase:am-ga:am2ga7`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete - Candidate (sgte_mmc2): (Am2Ga7) — Hallstedt 2025 mmc2 row for AM2GA7: Am2Ga7 - Stoichiometry: Am 0.2222, Ga 0.7778 - Stability: stable in 1 of 1 calculated diagram(s): 300–502.79 K, x(Ga) 0.77778–0.77778 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:am2ga7) Names (2): _corpus: _corpus:phase:am-ga:am2ga7 _tdb: _tdb:AmGa-16Per.tdb:AM2GA7 ### TDB models of AM2GA7 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AM2GA7, type code %, sha256 `36dbebc1ac721066…` ~~~~text 107: PHASE AM2GA7 % 2 2 7 ! 108: CONST AM2GA7 : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AM3GA_ALPHA (Am–Ga) - Id: `phase:am-ga:am3ga-alpha`; status `assigned` - Structure: Pb3Sr · tP4 · P4/mmm (123); type `st:pb3sr-tp4`; 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: Am 0.7500, Ga 0.2500 - Stability: stable in 1 of 1 calculated diagram(s): 300–634.73 K, x(Ga) 0.25–0.25 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:am3ga-alpha) Names (2): _corpus: _corpus:phase:am-ga:am3ga-alpha _tdb: _tdb:AmGa-16Per.tdb:AM3GA_ALPHA ### TDB models of AM3GA_ALPHA (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AM3GA_ALPHA, type code %, sha256 `36dbebc1ac721066…` ~~~~text 57: PHASE AM3GA_ALPHA % 2 3 1 ! 58: CONST AM3GA_ALPHA : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AM3GA_L12 (Am–Ga) - Id: `phase:am-ga:am3ga-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: Am 0.7500, Ga 0.2500 - Stability: stable in 1 of 1 calculated diagram(s): 634.73–924.3 K, x(Ga) 0.25–0.25 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:am3ga-l12) Names (2): _corpus: _corpus:phase:am-ga:am3ga-l12 _tdb: _tdb:AmGa-16Per.tdb:AM3GA_L12 ### TDB models of AM3GA_L12 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AM3GA_L12, type code %, sha256 `36dbebc1ac721066…` ~~~~text 62: PHASE AM3GA_L12 % 2 3 1 ! 63: CONST AM3GA_L12 : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AM3GA11 (Am–Ga) - Id: `phase:am-ga:am3ga11`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete - Candidate (sgte_mmc2): (Am3Ga11) — Hallstedt 2025 mmc2 row for AM3GA11: Am3Ga11 - Stoichiometry: Am 0.2143, Ga 0.7857 - Stability: stable in 1 of 1 calculated diagram(s): 300–666.82 K, x(Ga) 0.78571–0.78571 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:am3ga11) Names (2): _corpus: _corpus:phase:am-ga:am3ga11 _tdb: _tdb:AmGa-16Per.tdb:AM3GA11 ### TDB models of AM3GA11 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AM3GA11, type code %, sha256 `36dbebc1ac721066…` ~~~~text 112: PHASE AM3GA11 % 2 3 11 ! 113: CONST AM3GA11 : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AM5GA3 (Am–Ga) - Id: `phase:am-ga:am5ga3`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete - Candidate (sgte_mmc2): (Am5Ga3) — Hallstedt 2025 mmc2 row for AM5GA3: Am5Ga3 - Stoichiometry: Am 0.6250, Ga 0.3750 - Stability: stable in 1 of 1 calculated diagram(s): 300–997.54 K, x(Ga) 0.375–0.375 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:am5ga3) Names (2): _corpus: _corpus:phase:am-ga:am5ga3 _tdb: _tdb:AmGa-16Per.tdb:AM5GA3 ### TDB models of AM5GA3 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AM5GA3, type code %, sha256 `36dbebc1ac721066…` ~~~~text 67: PHASE AM5GA3 % 2 5 3 ! 68: CONST AM5GA3 : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AMGA_ALPHA (Am–Ga) - Id: `phase:am-ga:amga-alpha`; 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 (sgte_mmc2): (AmGa-alpha) — Hallstedt 2025 mmc2 row for AMGA_ALPHA: AmGa (low T) - Stoichiometry: Am 0.5000, Ga 0.5000 - Stability: stable in 1 of 1 calculated diagram(s): 300–841.57 K, x(Ga) 0.5–0.5 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:amga-alpha) Names (2): _corpus: _corpus:phase:am-ga:amga-alpha _tdb: _tdb:AmGa-16Per.tdb:AMGA_ALPHA ### TDB models of AMGA_ALPHA (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AMGA_ALPHA, type code %, sha256 `36dbebc1ac721066…` ~~~~text 72: PHASE AMGA_ALPHA % 2 1 1 ! 73: CONST AMGA_ALPHA : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AMGA_BETA (Am–Ga) - Id: `phase:am-ga:amga-beta`; 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 (sgte_mmc2): (AmGa-beta) — Hallstedt 2025 mmc2 row for AMGA_BETA: AmGa (high T) - Stoichiometry: Am 0.5000, Ga 0.5000 - Stability: stable in 1 of 1 calculated diagram(s): 841.57–1137.94 K, x(Ga) 0.5–0.5 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:amga-beta) Names (2): _corpus: _corpus:phase:am-ga:amga-beta _tdb: _tdb:AmGa-16Per.tdb:AMGA_BETA ### TDB models of AMGA_BETA (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AMGA_BETA, type code %, sha256 `36dbebc1ac721066…` ~~~~text 77: PHASE AMGA_BETA % 2 1 1 ! 78: CONST AMGA_BETA : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AMGA2_C32 (Am–Ga) - Id: `phase:am-ga:amga2-c32`; status `assigned` - Structure: AlB2 · C32 · hP3 · P6/mmm (191); type `st:c32-alb2-hp3`; tier A: standard phase name; confidence high - Stoichiometry: Am 0.3333, Ga 0.6667 - Stability: stable in 1 of 1 calculated diagram(s): 300–1610.6 K, x(Ga) 0.66667–0.66667 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:amga2-c32) Names (2): _corpus: _corpus:phase:am-ga:amga2-c32 _tdb: _tdb:AmGa-16Per.tdb:AMGA2_C32 ### TDB models of AMGA2_C32 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AMGA2_C32, type code %, sha256 `36dbebc1ac721066…` ~~~~text 87: PHASE AMGA2_C32 % 2 1 2 ! 88: CONST AMGA2_C32 : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AMGA3_ALPHA (Am–Ga) - Id: `phase:am-ga:amga3-alpha`; 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 (sgte_mmc2): (AmGa3-alpha) — Hallstedt 2025 mmc2 row for AMGA3_ALPHA: AmGa3 (low T) - Stoichiometry: Am 0.2500, Ga 0.7500 - Stability: stable in 1 of 1 calculated diagram(s): 300–990 K, x(Ga) 0.75–0.75 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:amga3-alpha) Names (2): _corpus: _corpus:phase:am-ga:amga3-alpha _tdb: _tdb:AmGa-16Per.tdb:AMGA3_ALPHA ### TDB models of AMGA3_ALPHA (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AMGA3_ALPHA, type code %, sha256 `36dbebc1ac721066…` ~~~~text 92: PHASE AMGA3_ALPHA % 2 1 3 ! 93: CONST AMGA3_ALPHA : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AMGA3_BETA (Am–Ga) - Id: `phase:am-ga:amga3-beta`; 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 (sgte_mmc2): (AmGa3-beta) — Hallstedt 2025 mmc2 row for AMGA3_BETA: AmGa3 (ht1) - Stoichiometry: Am 0.2500, Ga 0.7500 - Stability: stable in 1 of 1 calculated diagram(s): 990–1196.17 K, x(Ga) 0.75–0.75 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:amga3-beta) Names (2): _corpus: _corpus:phase:am-ga:amga3-beta _tdb: _tdb:AmGa-16Per.tdb:AMGA3_BETA ### TDB models of AMGA3_BETA (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AMGA3_BETA, type code %, sha256 `36dbebc1ac721066…` ~~~~text 97: PHASE AMGA3_BETA % 2 1 3 ! 98: CONST AMGA3_BETA : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AMGA3_GAMMA (Am–Ga) - Id: `phase:am-ga:amga3-gamma`; 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 (sgte_mmc2): (AmGa3-gamma) — Hallstedt 2025 mmc2 row for AMGA3_GAMMA: AmGa3 (ht2) - Stoichiometry: Am 0.2500, Ga 0.7500 - Stability: stable in 1 of 1 calculated diagram(s): 1196.17–1551.99 K, x(Ga) 0.75–0.75 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:amga3-gamma) Names (2): _corpus: _corpus:phase:am-ga:amga3-gamma _tdb: _tdb:AmGa-16Per.tdb:AMGA3_GAMMA ### TDB models of AMGA3_GAMMA (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AMGA3_GAMMA, type code %, sha256 `36dbebc1ac721066…` ~~~~text 102: PHASE AMGA3_GAMMA % 2 1 3 ! 103: CONST AMGA3_GAMMA : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AMGA4_D1B (Am–Ga) - Id: `phase:am-ga:amga4-d1b`; status `assigned` - Structure: Al4U · D1_b · oI20 · Imma (74); type `st:d1-b-al4u-oi20`; tier A: standard phase name; confidence high - Stoichiometry: Am 0.2000, Ga 0.8000 - Stability: stable in 1 of 1 calculated diagram(s): 300–745.19 K, x(Ga) 0.8–0.8 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:amga4-d1b) Names (2): _corpus: _corpus:phase:am-ga:amga4-d1b _tdb: _tdb:AmGa-16Per.tdb:AMGA4_D1B ### TDB models of AMGA4_D1B (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AMGA4_D1B, type code %, sha256 `36dbebc1ac721066…` ~~~~text 117: PHASE AMGA4_D1B % 2 1 4 ! 118: CONST AMGA4_D1B : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## AMGA6 (Am–Ga) - Id: `phase:am-ga:amga6`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete - Candidate (sgte_mmc2): (AmGa6) — Hallstedt 2025 mmc2 row for AMGA6: AmGa6 - Stoichiometry: Am 0.1429, Ga 0.8571 - Stability: stable in 1 of 1 calculated diagram(s): 300–588.63 K, x(Ga) 0.85714–0.85714 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:amga6) Names (2): _corpus: _corpus:phase:am-ga:amga6 _tdb: _tdb:AmGa-16Per.tdb:AMGA6 ### TDB models of AMGA6 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): AMGA6, type code %, sha256 `36dbebc1ac721066…` ~~~~text 122: PHASE AMGA6 % 2 1 6 ! 123: CONST AMGA6 : AM : GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## BCC_A2 (Am–Ga) - Id: `phase:am-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 1 of 1 calculated diagram(s): 1350.04–1488.54 K, x(Ga) 0–0 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:bcc-a2) Names (2): _corpus: _corpus:phase:am-ga:bcc-a2 _tdb: _tdb:AmGa-16Per.tdb:BCC_A2 ### TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): BCC_A2, type code %B, sha256 `36dbebc1ac721066…` ~~~~text 37: PHASE BCC_A2 %B 2 1 3 ! 38: CONST BCC_A2 : AM% GA : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## DHCP (Am–Ga) - Id: `phase:am-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: Am 1.0000 - Stability: stable in 1 of 1 calculated diagram(s): 300–1254.47 K, x(Ga) 0–0 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:dhcp-a3) Names (2): _corpus: _corpus:phase:am-ga:dhcp-a3 _tdb: _tdb:AmGa-16Per.tdb:DHCP ### TDB models of DHCP (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): DHCP, type code %, sha256 `36dbebc1ac721066…` ~~~~text 47: PHASE DHCP % 1 1 ! 48: CONST DHCP : AM : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## FCC_A1 (Am–Ga) - Id: `phase:am-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 1 of 1 calculated diagram(s): 786.56–1351.04 K, x(Ga) 0–0.06164 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:fcc-a1) Names (2): _corpus: _corpus:phase:am-ga:fcc-a1 _tdb: _tdb:AmGa-16Per.tdb:FCC_A1 ### TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): FCC_A1, type code %A, sha256 `36dbebc1ac721066…` ~~~~text 32: PHASE FCC_A1 %A 2 1 1 ! 33: CONST FCC_A1 : AM% GA : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## HCP_A3 (Am–Ga) - Id: `phase:am-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 - Stoichiometry: Ga 1.0000 - 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:am-ga:hcp-a3) Names (2): _corpus: _corpus:phase:am-ga:hcp-a3 _tdb: _tdb:AmGa-16Per.tdb:HCP_A3 ### TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): HCP_A3, type code %A, sha256 `36dbebc1ac721066…` ~~~~text 42: PHASE HCP_A3 %A 2 1 0.5 ! 43: CONST HCP_A3 : GA : VA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _assessment that models this phase_ ## LIQUID (Am–Ga) - Id: `phase:am-ga: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(Ga) 0–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:am-ga:liquid) Names (2): _corpus: _corpus:phase:am-ga:liquid _tdb: _tdb:AmGa-16Per.tdb:LIQUID ### TDB models of LIQUID (1): PHASE and CONSTITUENT statements as written [AmGa-16Per.tdb](https://orchid-project.org/data/databases/sgte-binary/AmGa-16Per.tdb): LIQUID, type code %, sha256 `36dbebc1ac721066…` ~~~~text 27: PHASE LIQUID:L % 1 1 ! 28: CONST LIQUID:L : AM GA : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1016/j.jnucmat.2016.09.012](https://doi.org/10.1016/j.jnucmat.2016.09.012) A. Perron, P.E.A. Turchi, A. Landa, B. Oudot, B. Ravat, F. Delaunay, Thermodynamic assessments and inter-relationships between systems involving Al, Am, Ga, Pu, and U, Journal of Nuclear Materials 482, 187-200 (2016). _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).