# Au–Nd phases > Au–Nd system: 13 phases (tier A 8, tier B 1, tier C 3, liquid 1); 12 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/AU-ND.html · Markdown: https://data.orchid-project.org/phases/pages/AU-ND.md 13 phases (tier A 8, tier B 1, tier C 3, liquid 1); 12 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=AU-ND) · [full JSON](https://data.orchid-project.org/phases/systems/AU-ND.json) · [Au–Nd system page](https://data.orchid-project.org/systems/AU-ND.html) · [Markdown](https://data.orchid-project.org/phases/pages/AU-ND.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Au–Nd system (13) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [AU36ND17](#phase-au-nd-au36nd17); _phase:au-nd:au36nd17_ | Au36Nd17 · tP106 · P4/nmm (129) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–2500 K, x(Nd) 0.32075–0.32075 | 15 | 2 | | [AU4ND3](#phase-au-nd-au4nd3); _phase:au-nd:au4nd3_ | Pd4Pu3 · hR14 · R-3 (148) | tier B: DFT-supported (unique MP + OQMD match) | stable in 1 of 2 calculated diagram(s): 300–1528.17 K, x(Nd) 0.42857–0.42857 | 10 | 2 | | [AU51ND14](#phase-au-nd-au51nd14); _phase:au-nd:au51nd14_ | Ag51Gd14 · hP68 · P6/m (175) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 2 calculated diagram(s): 300–1475.88 K, x(Nd) 0.19732–0.21538 | 17 | 2 | | [AU6ND](#phase-au-nd-au6nd); _phase:au-nd:au6nd_ | Au6Pr · mC28 · C2/c (15) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 2 calculated diagram(s): 300–1150.88 K, x(Nd) 0.14286–0.14286 | 13 | 2 | | [AUND_B2](#phase-au-nd-aund-b2); _phase:au-nd:aund-b2_ | CsCl · B2 · cP2 · Pm-3m (221) | tier A: standard phase name | stable in 1 of 2 calculated diagram(s): 705.88–1744.15 K, x(Nd) 0.5–0.5 | 11 | 2 | | [AUND_B27](#phase-au-nd-aund-b27); _phase:au-nd:aund-b27_ | FeB · B27 · oP8 · Pnma (62) | tier A: standard phase name | stable in 1 of 2 calculated diagram(s): 300–705.88 K, x(Nd) 0.5–0.5 | 5 | 2 | | [AUND_B33](#phase-au-nd-aund-b33); _phase:au-nd:aund-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 1 of 2 calculated diagram(s): 1640–1640 K | 8 | 2 | | [AUND2_C37](#phase-au-nd-aund2-c37); _phase:au-nd:aund2-c37_ | Co2Si · C37 · oP12 · Pnma (62) | tier A: standard phase name | stable in 1 of 2 calculated diagram(s): 300–1082.9 K, x(Nd) 0.66667–0.66667 | 12 | 2 | | [BCC_A2](#phase-au-nd-bcc-a2); _phase:au-nd:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 1099.04–2499.04 K, x(Nd) 0.99228–1 | 5 | 2 | | [DHCP](#phase-au-nd-dhcp-a3); _phase:au-nd:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1134.04 K, x(Nd) 1–1 | 11 | 2 | | [FCC_A1](#phase-au-nd-fcc-a1); _phase:au-nd:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1458.83 K, x(Nd) 0–0 | 7 | 2 | | [HCP_A3](#phase-au-nd-hcp-a3); _phase:au-nd: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-au-nd-liquid); _phase:au-nd:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 925.42–2500 K, x(Nd) 0–1 | 62 | 2 | ## AU36ND17 (Au–Nd) - Id: `phase:au-nd:au36nd17`; status `assigned` - Structure: Au36Nd17 · tP106 · P4/nmm (129); type `st:au36nd17-tp106`; 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_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Au 0.6792, Nd 0.3208 - Stability: stable in 2 of 2 calculated diagram(s): 300–2500 K, x(Nd) 0.32075–0.32075 - Literature: 15 values (15 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:au36nd17) Names (5): _corpus: _corpus:phase:au-nd:au36nd17 _paper: _paper:10.1007/s11669-015-0378-2:Au36Nd17, paper:10.1016/j.jallcom.2016.02.170:Nd17Au36 _tdb: _tdb:AuNd-15Wan.tdb:AU36ND17, tdb:AuNd-16Mou.tdb:AU36ND17 ### TDB models of AU36ND17 (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): AU36ND17, type code %, sha256 `6bf31c7211e03710…` ~~~~text 61: PHASE AU36ND17 % 2 36 17 ! 62: CONST AU36ND17 : AU : ND : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): AU36ND17, type code %, sha256 `9c0e752aab7ca18f…` ~~~~text 60: PHASE AU36ND17 % 2 36 17 ! 61: CONST AU36ND17 : AU : ND : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _cited as the source of values for this phase_ ## AU4ND3 (Au–Nd) - Id: `phase:au-nd:au4nd3`; status `assigned` - Structure: Pd4Pu3 · hR14 · R-3 (148); type `st:pd4pu3-hr14`; tier B: DFT-supported (unique MP + OQMD match); confidence high - Stoichiometry: Au 0.5714, Nd 0.4286 - Stability: stable in 1 of 2 calculated diagram(s): 300–1528.17 K, x(Nd) 0.42857–0.42857 - Literature: 10 values (10 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:au4nd3) Names (7): _corpus: _corpus:phase:au-nd:au4nd3 _mp: _mp:mp-aaaaasxw _oqmd: _oqmd:oqmd-94716 _paper: _paper:10.1007/s11669-015-0378-2:Au4Nd3, paper:10.1016/j.jallcom.2016.02.170:Nd3Au4 _tdb: _tdb:AuNd-15Wan.tdb:AU4ND3, tdb:AuNd-16Mou.tdb:AU4ND3 ### TDB models of AU4ND3 (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): AU4ND3, type code %, sha256 `6bf31c7211e03710…` ~~~~text 66: PHASE AU4ND3 % 2 4 3 ! 67: CONST AU4ND3 : AU : ND : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): AU4ND3, type code %, sha256 `9c0e752aab7ca18f…` ~~~~text 65: PHASE AU4ND3 % 2 4 3 ! 66: CONST AU4ND3 : AU : ND : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _cited as the source of values for this phase_ ## AU51ND14 (Au–Nd) - Id: `phase:au-nd:au51nd14`; status `assigned` - Structure: Ag51Gd14 · hP68 · P6/m (175); type `st:ag51gd14-hp68`; 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, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system - Stability: stable in 1 of 2 calculated diagram(s): 300–1475.88 K, x(Nd) 0.19732–0.21538 - Literature: 17 values (17 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:au51nd14) Names (5): _corpus: _corpus:phase:au-nd:au51nd14 _paper: _paper:10.1007/s11669-015-0378-2:Au51Nd14, paper:10.1016/j.jallcom.2016.02.170:Nd14Au51 _tdb: _tdb:AuNd-15Wan.tdb:AU51ND14, tdb:AuNd-16Mou.tdb:AU51ND14 ### TDB models of AU51ND14 (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): AU51ND14, type code %, sha256 `6bf31c7211e03710…` ~~~~text 56: PHASE AU51ND14 % 2 51 14 ! 57: CONST AU51ND14 : AU : ND : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): AU51ND14, type code %, sha256 `9c0e752aab7ca18f…` ~~~~text 55: PHASE AU51ND14 % 2 51 14 ! 56: CONST AU51ND14 : AU : AU ND% : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _cited as the source of values for this phase_ ## AU6ND (Au–Nd) - Id: `phase:au-nd:au6nd`; status `assigned` - Structure: Au6Pr · mC28 · C2/c (15); type `st:au6pr-mc28`; 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_mp, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Au 0.8571, Nd 0.1429 - Stability: stable in 1 of 2 calculated diagram(s): 300–1150.88 K, x(Nd) 0.14286–0.14286 - Literature: 13 values (13 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:au6nd) Names (5): _corpus: _corpus:phase:au-nd:au6nd _paper: _paper:10.1007/s11669-015-0378-2:Au6Nd, paper:10.1016/j.jallcom.2016.02.170:NdAu6 _tdb: _tdb:AuNd-15Wan.tdb:AU6ND, tdb:AuNd-16Mou.tdb:AU6ND ### TDB models of AU6ND (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): AU6ND, type code %, sha256 `6bf31c7211e03710…` ~~~~text 51: PHASE AU6ND % 2 6 1 ! 52: CONST AU6ND : AU : ND : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): AU6ND, type code %, sha256 `9c0e752aab7ca18f…` ~~~~text 50: PHASE AU6ND % 2 6 1 ! 51: CONST AU6ND : AU : ND : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _cited as the source of values for this phase_ ## AUND_B2 (Au–Nd) - Id: `phase:au-nd:aund-b2`; status `assigned` - Structure: CsCl · B2 · cP2 · Pm-3m (221); type `st:b2-cscl-cp2`; tier A: standard phase name; confidence high - Stoichiometry: Au 0.5000, Nd 0.5000 - Stability: stable in 1 of 2 calculated diagram(s): 705.88–1744.15 K, x(Nd) 0.5–0.5 - Literature: 11 values (11 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:aund-b2) Names (5): _corpus: _corpus:phase:au-nd:aund-b2 _paper: _paper:10.1007/s11669-015-0378-2:γAuNd, paper:10.1016/j.jallcom.2016.02.170:γNdAu _tdb: _tdb:AuNd-15Wan.tdb:AUND_B2, tdb:AuNd-16Mou.tdb:AUND_B2 ### TDB models of AUND_B2 (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): AUND_B2, type code %, sha256 `6bf31c7211e03710…` ~~~~text 81: PHASE AUND_B2 % 2 1 1 ! 82: CONST AUND_B2 : AU : ND : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): AUND_B2, type code %, sha256 `9c0e752aab7ca18f…` ~~~~text 80: PHASE AUND_B2 % 2 1 1 ! 81: CONST AUND_B2 : AU : ND : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _cited as the source of values for this phase_ ## AUND_B27 (Au–Nd) - Id: `phase:au-nd:aund-b27`; status `assigned` - Structure: FeB · B27 · oP8 · Pnma (62); type `st:b27-feb-op8`; tier A: standard phase name; confidence high - Stoichiometry: Au 0.5000, Nd 0.5000 - Stability: stable in 1 of 2 calculated diagram(s): 300–705.88 K, x(Nd) 0.5–0.5 - Literature: 5 values (5 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:aund-b27) Names (5): _corpus: _corpus:phase:au-nd:aund-b27 _paper: _paper:10.1007/s11669-015-0378-2:αAuNd, paper:10.1016/j.jallcom.2016.02.170:αNdAu _tdb: _tdb:AuNd-15Wan.tdb:AUND_B27, tdb:AuNd-16Mou.tdb:AUND_B27 ### TDB models of AUND_B27 (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): AUND_B27, type code %, sha256 `6bf31c7211e03710…` ~~~~text 71: PHASE AUND_B27 % 2 1 1 ! 72: CONST AUND_B27 : AU : ND : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): AUND_B27, type code %, sha256 `9c0e752aab7ca18f…` ~~~~text 70: PHASE AUND_B27 % 2 1 1 ! 71: CONST AUND_B27 : AU : ND : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _cited as the source of values for this phase_ ## AUND_B33 (Au–Nd) - Id: `phase:au-nd:aund-b33`; status `assigned` - Structure: CrB · B33 · oC8 · Cmcm (63); type `st:b33-crb-oc8`; tier A: standard phase name; confidence high - Stoichiometry: Au 0.5000, Nd 0.5000 - Stability: stable in 1 of 2 calculated diagram(s): 1640–1640 K - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:aund-b33) Names (4): _corpus: _corpus:phase:au-nd:aund-b33 _paper: _paper:10.1007/s11669-015-0378-2:βAuNd _tdb: _tdb:AuNd-15Wan.tdb:AUND_B33, tdb:AuNd-16Mou.tdb:AUND_B33 ### TDB models of AUND_B33 (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): AUND_B33, type code %, sha256 `6bf31c7211e03710…` ~~~~text 76: PHASE AUND_B33 % 2 1 1 ! 77: CONST AUND_B33 : AU : ND : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): AUND_B33, type code %, sha256 `9c0e752aab7ca18f…` ~~~~text 75: PHASE AUND_B33 % 2 1 1 ! 76: CONST AUND_B33 : AU : ND : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _cited as the source of values for this phase_ ## AUND2_C37 (Au–Nd) - Id: `phase:au-nd:aund2-c37`; status `assigned` - Structure: Co2Si · C37 · oP12 · Pnma (62); type `st:c37-co2si-op12`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaacksik and oqmd-1520685, space group 62 - Stoichiometry: Au 0.3333, Nd 0.6667 - Stability: stable in 1 of 2 calculated diagram(s): 300–1082.9 K, x(Nd) 0.66667–0.66667 - Literature: 12 values (12 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:aund2-c37) Names (7): _corpus: _corpus:phase:au-nd:aund2-c37 _mp: _mp:mp-aaacksik _oqmd: _oqmd:oqmd-1520685 _paper: _paper:10.1007/s11669-015-0378-2:AuNd2, paper:10.1016/j.jallcom.2016.02.170:Nd2Au _tdb: _tdb:AuNd-15Wan.tdb:AUND2_C37, tdb:AuNd-16Mou.tdb:AUND2_C37 ### TDB models of AUND2_C37 (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): AUND2_C37, type code %, sha256 `6bf31c7211e03710…` ~~~~text 86: PHASE AUND2_C37 % 2 1 2 ! 87: CONST AUND2_C37 : AU : ND : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): AUND2_C37, type code %, sha256 `9c0e752aab7ca18f…` ~~~~text 85: PHASE AUND2_C37 % 2 1 2 ! 86: CONST AUND2_C37 : AU : ND : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _cited as the source of values for this phase_ ## BCC_A2 (Au–Nd) - Id: `phase:au-nd: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): 1099.04–2499.04 K, x(Nd) 0.99228–1 - Literature: 5 values (5 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:bcc-a2) Names (5): _corpus: _corpus:phase:au-nd:bcc-a2 _paper: _paper:10.1007/s11669-015-0378-2:βNd, paper:10.1016/j.jallcom.2016.02.170:(βNd) _tdb: _tdb:AuNd-15Wan.tdb:BCC_A2, tdb:AuNd-16Mou.tdb:BCC_A2 ### TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): BCC_A2, type code %B, sha256 `6bf31c7211e03710…` ~~~~text 36: PHASE BCC_A2 %B 2 1 3 ! 37: CONST BCC_A2 : AU ND% : VA : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): BCC_A2, type code %B, sha256 `9c0e752aab7ca18f…` ~~~~text 35: PHASE BCC_A2 %B 2 1 3 ! 36: CONST BCC_A2 : AU ND% : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _cited as the source of values for this phase_ ## DHCP (Au–Nd) - Id: `phase:au-nd: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 - Stability: stable in 2 of 2 calculated diagram(s): 300–1134.04 K, x(Nd) 1–1 - Literature: 11 values (11 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:dhcp-a3) Names (7): _corpus: _corpus:phase:au-nd:dhcp-a3, corpus:phase:au-nd:dhcp _paper: _paper:10.1007/s11669-015-0378-2:αNd, paper:10.1016/j.jallcom.2016.02.170:(αNd), paper:10.1016/j.jallcom.2016.02.170:αNd _tdb: _tdb:AuNd-15Wan.tdb:DHCP, tdb:AuNd-16Mou.tdb:DHCP ### TDB models of DHCP (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): DHCP, type code %, sha256 `6bf31c7211e03710…` ~~~~text 46: PHASE DHCP % 1 1 ! 47: CONST DHCP : AU ND% : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): DHCP, type code %, sha256 `9c0e752aab7ca18f…` ~~~~text 45: PHASE DHCP % 1 1 ! 46: CONST DHCP : AU ND% : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _cited as the source of values for this phase_ ## FCC_A1 (Au–Nd) - Id: `phase:au-nd: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): 300–1458.83 K, x(Nd) 0–0 - Literature: 7 values (7 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:fcc-a1) Names (5): _corpus: _corpus:phase:au-nd:fcc-a1 _paper: _paper:10.1007/s11669-015-0378-2:(Au), paper:10.1016/j.jallcom.2016.02.170:Au _tdb: _tdb:AuNd-15Wan.tdb:FCC_A1, tdb:AuNd-16Mou.tdb:FCC_A1 ### TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): FCC_A1, type code %A, sha256 `6bf31c7211e03710…` ~~~~text 31: PHASE FCC_A1 %A 2 1 1 ! 32: CONST FCC_A1 : AU% ND : VA : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): FCC_A1, type code %A, sha256 `9c0e752aab7ca18f…` ~~~~text 30: PHASE FCC_A1 %A 2 1 1 ! 31: CONST FCC_A1 : AU% ND : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _cited as the source of values for this phase_ ## HCP_A3 (Au–Nd) - Id: `phase:au-nd: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:au-nd:hcp-a3) Names (3): _corpus: _corpus:phase:au-nd:hcp-a3 _tdb: _tdb:AuNd-15Wan.tdb:HCP_A3, tdb:AuNd-16Mou.tdb:HCP_A3 ### TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): HCP_A3, type code %A, sha256 `6bf31c7211e03710…` ~~~~text 41: PHASE HCP_A3 %A 2 1 0.5 ! 42: CONST HCP_A3 : AU ND : VA : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): HCP_A3, type code %A, sha256 `9c0e752aab7ca18f…` ~~~~text 40: PHASE HCP_A3 %A 2 1 0.5 ! 41: CONST HCP_A3 : AU ND : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase_ - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase_ ## LIQUID (Au–Nd) - Id: `phase:au-nd:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 2 of 2 calculated diagram(s): 925.42–2500 K, x(Nd) 0–1 - Literature: 62 values (62 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:au-nd:liquid) Names (6): _corpus: _corpus:phase:au-nd:liquid _paper: _paper:10.1007/s11669-015-0378-2:L, paper:10.1016/j.jallcom.2016.02.170:Liq, paper:10.1016/j.jallcom.2016.02.170:liq _tdb: _tdb:AuNd-15Wan.tdb:LIQUID, tdb:AuNd-16Mou.tdb:LIQUID ### TDB models of LIQUID (2): PHASE and CONSTITUENT statements as written [AuNd-15Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-15Wan.tdb): LIQUID, type code %, sha256 `6bf31c7211e03710…` ~~~~text 26: PHASE LIQUID:L % 1 1 ! 27: CONST LIQUID:L : AU ND : ! ~~~~ [AuNd-16Mou.tdb](https://orchid-project.org/data/databases/sgte-binary/AuNd-16Mou.tdb): LIQUID, type code %, sha256 `9c0e752aab7ca18f…` ~~~~text 25: PHASE LIQUID:L % 1 1 ! 26: CONST LIQUID:L : AU ND : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2016.02.170](https://doi.org/10.1016/j.jallcom.2016.02.170) D. Moustaine, K. Mahdouk, Thermodynamic reassessment of the neodymium–gold binary system, Journal of Alloys and Compounds 673, 115-125 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-015-0378-2](https://doi.org/10.1007/s11669-015-0378-2) S. L. Wang, L. J. Zhou, Z. F. Lan, J. L. Li, Y. H. Lin, C. P. Wang et al., Thermodynamic Assessments of the Au-Nd and Au-Dy Systems, J. Phase Equilib. Diffus. 36, 241-247 (2015). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s11661-999-0266-7](https://doi.org/10.1007/s11661-999-0266-7) A. Saccone, D. Macciò, S. Delfino, R. Ferro, The neodymium-gold phase diagram, Metall Mater Trans A 30, 1169-1176 (1999). _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).