# Cu–Nd phases > Cu–Nd system: 13 phases (tier A 7, tier C 3, liquid 1, needs_review 2); 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/CU-ND.html · Markdown: https://data.orchid-project.org/phases/pages/CU-ND.md 13 phases (tier A 7, tier C 3, liquid 1, needs_review 2); 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=CU-ND) · [full JSON](https://data.orchid-project.org/phases/systems/CU-ND.json) · [Cu–Nd system page](https://data.orchid-project.org/systems/CU-ND.html) · [Markdown](https://data.orchid-project.org/phases/pages/CU-ND.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Cu–Nd system (13) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [BCC_A2](#phase-cu-nd-bcc-a2); _phase:cu-nd:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 1122.02–2499.66 K, x(Nd) 0.99828–1 | 0 | 3 | | [CU2ND](#phase-cu-nd-cu2nd); _phase:cu-nd:cu2nd_ | Hg2K · oI12 · Imma (74) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1111.24 K, x(Nd) 0.33333–0.33333 | 9 | 3 | | [CU4ND](#phase-cu-nd-cu4nd); _phase:cu-nd:cu4nd_ | CeCu4 · oP20 · Pnnm (58) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1098.63 K, x(Nd) 0.2–0.2 | 4 | 3 | | [CU5ND_D2D](#phase-cu-nd-cu5nd-d2d); _phase:cu-nd:cu5nd-d2d_ | CaCu5 · D2_d · hP6 · P6/mmm (191) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1121.42 K, x(Nd) 0.16667–0.16667 | 4 | 3 | | [CU6ND](#phase-cu-nd-cu6nd); _phase:cu-nd:cu6nd_ | CeCu6 · oP28 · Pnma (62) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1223.18 K, x(Nd) 0.14286–0.14286 | 9 | 3 | | [CU7ND2](#phase-cu-nd-cu7nd2); _phase:cu-nd:cu7nd2_ | | needs_review | stable in 2 of 2 calculated diagram(s): 1069.48–1096.08 K, x(Nd) 0.22222–0.22222 | 1 | 2 | | [CUND](#phase-cu-nd-cund); _phase:cu-nd:cund_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–889.29 K, x(Nd) 0.5–0.5 | 2 | 1 | | [CUND_B2](#phase-cu-nd-cund-b2); _phase:cu-nd:cund-b2_ | CsCl · B2 · cP2 · Pm-3m (221) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 742.76–947.59 K, x(Nd) 0.5–0.5 | 0 | 2 | | [CUND_B27](#phase-cu-nd-cund-b27); _phase:cu-nd:cund-b27_ | FeB · B27 · oP8 · Pnma (62) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–743 K, x(Nd) 0.5–0.5 | 2 | 2 | | [DHCP](#phase-cu-nd-dhcp-a3); _phase:cu-nd:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1288.41 K, x(Nd) 1–1 | 0 | 3 | | [FCC_A1](#phase-cu-nd-fcc-a1); _phase:cu-nd:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1401.61 K, x(Nd) 0–0.00046 | 1 | 3 | | [HCP_A3](#phase-cu-nd-hcp-a3); _phase:cu-nd:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 3 | | [LIQUID](#phase-cu-nd-liquid); _phase:cu-nd:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 300–2500 K, x(Nd) 0–1 | 10 | 3 | ## BCC_A2 (Cu–Nd) - Id: `phase:cu-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 3 of 3 calculated diagram(s): 1122.02–2499.66 K, x(Nd) 0.99828–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:bcc-a2) Names (4): _corpus: _corpus:phase:cu-nd:bcc-a2 _tdb: _tdb:CuNd-11Wan.tdb:BCC_A2, tdb:CuNd-96Du.tdb:BCC_A2, tdb:CuNd-96Zhu.tdb:BCC_A2 ### TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): BCC_A2, type code %B, sha256 `dcf3e69ab0b3b3be…` ~~~~text 36: PHASE BCC_A2 %B 2 1 3 ! 37: CONST BCC_A2 : CU ND% : VA : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): BCC_A2, type code %B, sha256 `3ca7c1071943556d…` ~~~~text 37: PHASE BCC_A2 %B 2 1 3 ! 38: CONST BCC_A2 : CU ND% : VA : ! ~~~~ [CuNd-96Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Zhu.tdb): BCC_A2, type code %B, sha256 `b7165268ed28e2fa…` ~~~~text 32: PHASE BCC_A2 %B 2 1 3 ! 33: CONST BCC_A2 : CU ND% : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/BF02665998](https://doi.org/10.1007/BF02665998) W. Zhuang, Z.-Y. Qiao, S. Wei, J. Shen, J. Phase Equilib., 17, 508-21(1996). _assessment that models this phase_ - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase_ ## CU2ND (Cu–Nd) - Id: `phase:cu-nd:cu2nd`; status `assigned` - Structure: Hg2K · oI12 · Imma (74); type `st:hg2k-oi12`; 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 (mp_oqmd_space_groups_differ, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Cu 0.6667, Nd 0.3333 - Stability: stable in 3 of 3 calculated diagram(s): 300–1111.24 K, x(Nd) 0.33333–0.33333 - Literature: 9 values (9 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:cu2nd) Names (6): _corpus: _corpus:phase:cu-nd:cu2nd _paper: _paper:10.1007/bf02665998:Cu2Nd, paper:10.1016/j.jallcom.2010.11.160:Cu2Nd _tdb: _tdb:CuNd-11Wan.tdb:CU2ND, tdb:CuNd-96Du.tdb:CU2ND, tdb:CuNd-96Zhu.tdb:CU2ND ### TDB models of CU2ND (3): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): CU2ND, type code %, sha256 `dcf3e69ab0b3b3be…` ~~~~text 71: PHASE CU2ND % 2 2 1 ! 72: CONST CU2ND : CU : ND : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): CU2ND, type code %, sha256 `3ca7c1071943556d…` ~~~~text 72: PHASE CU2ND % 2 2 1 ! 73: CONST CU2ND : CU : ND : ! ~~~~ [CuNd-96Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Zhu.tdb): CU2ND, type code %, sha256 `b7165268ed28e2fa…` ~~~~text 62: PHASE CU2ND % 2 2 1 ! 63: CONST CU2ND : CU : ND : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/BF02665998](https://doi.org/10.1007/BF02665998) W. Zhuang, Z.-Y. Qiao, S. Wei, J. Shen, J. Phase Equilib., 17, 508-21(1996). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ - [doi:10.1016/0022-5088(83)90230-8](https://doi.org/10.1016/0022-5088%2883%2990230-8) M.M. Carnasciali, G.A. Costa, E.A. Franceschi, Phase equilibria in the Nd-Cu system, Journal of the Less Common Metals 92, 97-103 (1983). _cited as the source of values for this phase_ - [doi:10.2320/matertrans1989.30.273](https://doi.org/10.2320/matertrans1989.30.273) Guojun Qi, Kimio Itagaki, Akira Yazawa, High Temperature Heat Content Measurements of Cu–RE (RE=Y, La, Ce, Pr, Nd) Binary Systems, Mater. Trans., JIM 30, 273-282 (1989). _cited as the source of values for this phase_ ## CU4ND (Cu–Nd) - Id: `phase:cu-nd:cu4nd`; status `assigned` - Structure: CeCu4 · oP20 · Pnnm (58); type `st:cecu4-op20`; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated - Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) [doi:10.1016/j.calphad.2025.102833](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: Cu 0.8000, Nd 0.2000 - Stability: stable in 3 of 3 calculated diagram(s): 300–1098.63 K, x(Nd) 0.2–0.2 - Literature: 4 values (4 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:cu4nd) Names (6): _corpus: _corpus:phase:cu-nd:cu4nd _paper: _paper:10.1007/bf02665998:Cu4Nd, paper:10.1016/j.jallcom.2010.11.160:Cu4Nd _tdb: _tdb:CuNd-11Wan.tdb:CU4ND, tdb:CuNd-96Du.tdb:CU4ND, tdb:CuNd-96Zhu.tdb:CU4ND ### TDB models of CU4ND (3): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): CU4ND, type code %, sha256 `dcf3e69ab0b3b3be…` ~~~~text 61: PHASE CU4ND % 2 4 1 ! 62: CONST CU4ND : CU : ND : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): CU4ND, type code %, sha256 `3ca7c1071943556d…` ~~~~text 62: PHASE CU4ND % 2 4 1 ! 63: CONST CU4ND : CU : ND : ! ~~~~ [CuNd-96Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Zhu.tdb): CU4ND, type code %, sha256 `b7165268ed28e2fa…` ~~~~text 57: PHASE CU4ND % 2 4 1 ! 58: CONST CU4ND : CU : ND : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/BF02665998](https://doi.org/10.1007/BF02665998) W. Zhuang, Z.-Y. Qiao, S. Wei, J. Shen, J. Phase Equilib., 17, 508-21(1996). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ - [doi:10.1016/0022-5088(83)90230-8](https://doi.org/10.1016/0022-5088%2883%2990230-8) M.M. Carnasciali, G.A. Costa, E.A. Franceschi, Phase equilibria in the Nd-Cu system, Journal of the Less Common Metals 92, 97-103 (1983). _cited as the source of values for this phase_ ## CU5ND_D2D (Cu–Nd) - Id: `phase:cu-nd:cu5nd-d2d`; status `assigned` - Structure: CaCu5 · D2_d · hP6 · P6/mmm (191); type `st:d2-d-cacu5-hp6`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaaaabrw and oqmd-31351, space group 191 - Stoichiometry: Cu 0.8333, Nd 0.1667 - Stability: stable in 3 of 3 calculated diagram(s): 300–1121.42 K, x(Nd) 0.16667–0.16667 - Literature: 4 values (4 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:cu5nd-d2d) Names (8): _corpus: _corpus:phase:cu-nd:cu5nd-d2d _mp: _mp:mp-aaaaabrw _oqmd: _oqmd:oqmd-31351 _paper: _paper:10.1007/bf02665998:Cu5Nd, paper:10.1016/j.jallcom.2010.11.160:Cu5Nd _tdb: _tdb:CuNd-11Wan.tdb:CU5ND_D2D, tdb:CuNd-96Du.tdb:CU5ND_D2D, tdb:CuNd-96Zhu.tdb:CU5ND_D2D ### TDB models of CU5ND_D2D (3): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): CU5ND_D2D, type code %, sha256 `dcf3e69ab0b3b3be…` ~~~~text 56: PHASE CU5ND_D2D % 2 5 1 ! 57: CONST CU5ND_D2D : CU : ND : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): CU5ND_D2D, type code %, sha256 `3ca7c1071943556d…` ~~~~text 57: PHASE CU5ND_D2D % 2 5 1 ! 58: CONST CU5ND_D2D : CU : ND : ! ~~~~ [CuNd-96Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Zhu.tdb): CU5ND_D2D, type code %, sha256 `b7165268ed28e2fa…` ~~~~text 52: PHASE CU5ND_D2D % 2 5 1 ! 53: CONST CU5ND_D2D : CU : ND : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/BF02665998](https://doi.org/10.1007/BF02665998) W. Zhuang, Z.-Y. Qiao, S. Wei, J. Shen, J. Phase Equilib., 17, 508-21(1996). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ ## CU6ND (Cu–Nd) - Id: `phase:cu-nd:cu6nd`; status `assigned` - Structure: CeCu6 · oP28 · Pnma (62); type `st:cecu6-op28`; 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: Cu 0.8571, Nd 0.1429 - Stability: stable in 3 of 3 calculated diagram(s): 300–1223.18 K, x(Nd) 0.14286–0.14286 - Literature: 9 values (9 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:cu6nd) Names (6): _corpus: _corpus:phase:cu-nd:cu6nd _paper: _paper:10.1007/bf02665998:Cu6Nd, paper:10.1016/j.jallcom.2010.11.160:Cu6Nd _tdb: _tdb:CuNd-11Wan.tdb:CU6ND, tdb:CuNd-96Du.tdb:CU6ND, tdb:CuNd-96Zhu.tdb:CU6ND ### TDB models of CU6ND (3): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): CU6ND, type code %, sha256 `dcf3e69ab0b3b3be…` ~~~~text 51: PHASE CU6ND % 2 6 1 ! 52: CONST CU6ND : CU : ND : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): CU6ND, type code %, sha256 `3ca7c1071943556d…` ~~~~text 52: PHASE CU6ND % 2 6 1 ! 53: CONST CU6ND : CU : ND : ! ~~~~ [CuNd-96Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Zhu.tdb): CU6ND, type code %, sha256 `b7165268ed28e2fa…` ~~~~text 47: PHASE CU6ND % 2 6 1 ! 48: CONST CU6ND : CU : ND : ! ~~~~ Example references (5 of 5; assessments first): - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/BF02665998](https://doi.org/10.1007/BF02665998) W. Zhuang, Z.-Y. Qiao, S. Wei, J. Shen, J. Phase Equilib., 17, 508-21(1996). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ - [doi:10.1016/0022-5088(84)90385-0](https://doi.org/10.1016/0022-5088%2884%2990385-0) Ch Laks, Joshua Pelleg, L Zevin, Notes on the Nd-Cu system, Journal of the Less Common Metals 102, 23-28 (1984). _cited as the source of values for this phase_ - [doi:10.2320/matertrans1989.30.273](https://doi.org/10.2320/matertrans1989.30.273) Guojun Qi, Kimio Itagaki, Akira Yazawa, High Temperature Heat Content Measurements of Cu–RE (RE=Y, La, Ce, Pr, Nd) Binary Systems, Mater. Trans., JIM 30, 273-282 (1989). _cited as the source of values for this phase_ ## CU7ND2 (Cu–Nd) - Id: `phase:cu-nd:cu7nd2`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete - Candidate (sgte_mmc2): (Cu7Nd2) — Hallstedt 2025 mmc2 row for CU7ND2: Cu7Nd2 - Stoichiometry: Cu 0.7778, Nd 0.2222 - Stability: stable in 2 of 2 calculated diagram(s): 1069.48–1096.08 K, x(Nd) 0.22222–0.22222 - Literature: 1 values (1 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:cu7nd2) Names (4): _corpus: _corpus:phase:cu-nd:cu7nd2 _paper: _paper:10.1016/j.jallcom.2010.11.160:Cu7Nd2 _tdb: _tdb:CuNd-11Wan.tdb:CU7ND2, tdb:CuNd-96Du.tdb:CU7ND2 ### TDB models of CU7ND2 (2): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): CU7ND2, type code %, sha256 `dcf3e69ab0b3b3be…` ~~~~text 66: PHASE CU7ND2 % 2 7 2 ! 67: CONST CU7ND2 : CU : ND : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): CU7ND2, type code %, sha256 `3ca7c1071943556d…` ~~~~text 67: PHASE CU7ND2 % 2 7 2 ! 68: CONST CU7ND2 : CU : ND : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ - [doi:10.1016/0022-5088(83)90230-8](https://doi.org/10.1016/0022-5088%2883%2990230-8) M.M. Carnasciali, G.A. Costa, E.A. Franceschi, Phase equilibria in the Nd-Cu system, Journal of the Less Common Metals 92, 97-103 (1983). _cited as the source of values for this phase_ ## CUND (Cu–Nd) - Id: `phase:cu-nd:cund`; status `needs_review` - No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition - Candidate (dft_mp): Pnma (62) — on-hull MP NdCu at x(ND)=0.5000 - Candidate (dft_oqmd): Pnma (62) — on-hull OQMD Cu1 Nd1 at x(ND)=0.5000 - Candidate (tdb_comment): FeB · oP8 · Pnma, lt — CuNd-96Zhu.tdb: 'Prototype FeB (oP8, Pnma, lt) and CsCl (cP2, Pm-3m, ht)' - Stoichiometry: Cu 0.5000, Nd 0.5000 - Stability: stable in 1 of 1 calculated diagram(s): 300–889.29 K, x(Nd) 0.5–0.5 - Literature: 2 values (2 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:cund) Names (3): _corpus: _corpus:phase:cu-nd:cund _paper: _paper:10.1007/bf02665998:CuNd _tdb: _tdb:CuNd-96Zhu.tdb:CUND ### TDB models of CUND (1): PHASE and CONSTITUENT statements as written [CuNd-96Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Zhu.tdb): CUND, type code %, sha256 `b7165268ed28e2fa…` ~~~~text 67: PHASE CUND % 2 1 1 ! 68: CONST CUND : CU : ND : ! ~~~~ Example references (1 of 1; assessments first): - [doi:10.1007/BF02665998](https://doi.org/10.1007/BF02665998) W. Zhuang, Z.-Y. Qiao, S. Wei, J. Shen, J. Phase Equilib., 17, 508-21(1996). _assessment that models this phase; reports values for this phase_ ## CUND_B2 (Cu–Nd) - Id: `phase:cu-nd:cund-b2`; status `assigned` - Structure: CsCl · B2 · cP2 · Pm-3m (221); type `st:b2-cscl-cp2`; tier A: standard phase name; confidence high - Stoichiometry: Cu 0.5000, Nd 0.5000 - Stability: stable in 2 of 2 calculated diagram(s): 742.76–947.59 K, x(Nd) 0.5–0.5 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:cund-b2) Names (3): _corpus: _corpus:phase:cu-nd:cund-b2 _tdb: _tdb:CuNd-11Wan.tdb:CUND_B2, tdb:CuNd-96Du.tdb:CUND_B2 ### TDB models of CUND_B2 (2): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): CUND_B2, type code %, sha256 `dcf3e69ab0b3b3be…` ~~~~text 81: PHASE CUND_B2 % 2 1 1 ! 82: CONST CUND_B2 : CU : ND : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): CUND_B2, type code %, sha256 `3ca7c1071943556d…` ~~~~text 82: PHASE CUND_B2 % 2 1 1 ! 83: CONST CUND_B2 : CU : ND : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase_ ## CUND_B27 (Cu–Nd) - Id: `phase:cu-nd:cund-b27`; status `assigned` - Structure: FeB · B27 · oP8 · Pnma (62); type `st:b27-feb-op8`; tier A: standard phase name; confidence high - Stoichiometry: Cu 0.5000, Nd 0.5000 - Stability: stable in 2 of 2 calculated diagram(s): 300–743 K, x(Nd) 0.5–0.5 - Literature: 2 values (2 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:cund-b27) Names (4): _corpus: _corpus:phase:cu-nd:cund-b27 _paper: _paper:10.1016/j.jallcom.2010.11.160:αCuNd _tdb: _tdb:CuNd-11Wan.tdb:CUND_B27, tdb:CuNd-96Du.tdb:CUND_B27 ### TDB models of CUND_B27 (2): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): CUND_B27, type code %, sha256 `dcf3e69ab0b3b3be…` ~~~~text 76: PHASE CUND_B27 % 2 1 1 ! 77: CONST CUND_B27 : CU : ND : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): CUND_B27, type code %, sha256 `3ca7c1071943556d…` ~~~~text 77: PHASE CUND_B27 % 2 1 1 ! 78: CONST CUND_B27 : CU : ND : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ ## DHCP (Cu–Nd) - Id: `phase:cu-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 - Stoichiometry: Nd 1.0000 - Stability: stable in 3 of 3 calculated diagram(s): 300–1288.41 K, x(Nd) 1–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:dhcp-a3) Names (5): _corpus: _corpus:phase:cu-nd:dhcp-a3, corpus:phase:cu-nd:dhcp _tdb: _tdb:CuNd-11Wan.tdb:DHCP, tdb:CuNd-96Du.tdb:DHCP, tdb:CuNd-96Zhu.tdb:DHCP ### TDB models of DHCP (3): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): DHCP, type code %, sha256 `dcf3e69ab0b3b3be…` ~~~~text 46: PHASE DHCP % 1 1 ! 47: CONST DHCP : ND : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): DHCP, type code %, sha256 `3ca7c1071943556d…` ~~~~text 47: PHASE DHCP % 1 1 ! 48: CONST DHCP : ND : ! ~~~~ [CuNd-96Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Zhu.tdb): DHCP, type code %, sha256 `b7165268ed28e2fa…` ~~~~text 42: PHASE DHCP % 1 1 ! 43: CONST DHCP : ND : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/BF02665998](https://doi.org/10.1007/BF02665998) W. Zhuang, Z.-Y. Qiao, S. Wei, J. Shen, J. Phase Equilib., 17, 508-21(1996). _assessment that models this phase_ - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase_ ## FCC_A1 (Cu–Nd) - Id: `phase:cu-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 3 of 3 calculated diagram(s): 300–1401.61 K, x(Nd) 0–0.00046 - Literature: 1 values (1 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:fcc-a1) Names (5): _corpus: _corpus:phase:cu-nd:fcc-a1 _paper: _paper:10.1007/bf02665998:Cu(fcc) _tdb: _tdb:CuNd-11Wan.tdb:FCC_A1, tdb:CuNd-96Du.tdb:FCC_A1, tdb:CuNd-96Zhu.tdb:FCC_A1 ### TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): FCC_A1, type code %A, sha256 `dcf3e69ab0b3b3be…` ~~~~text 31: PHASE FCC_A1 %A 2 1 1 ! 32: CONST FCC_A1 : CU% ND : VA : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): FCC_A1, type code %A, sha256 `3ca7c1071943556d…` ~~~~text 32: PHASE FCC_A1 %A 2 1 1 ! 33: CONST FCC_A1 : CU% ND : VA : ! ~~~~ [CuNd-96Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Zhu.tdb): FCC_A1, type code %A, sha256 `b7165268ed28e2fa…` ~~~~text 27: PHASE FCC_A1 %A 2 1 1 ! 28: CONST FCC_A1 : CU% ND : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/BF02665998](https://doi.org/10.1007/BF02665998) W. Zhuang, Z.-Y. Qiao, S. Wei, J. Shen, J. Phase Equilib., 17, 508-21(1996). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase_ ## HCP_A3 (Cu–Nd) - Id: `phase:cu-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 3 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:hcp-a3) Names (4): _corpus: _corpus:phase:cu-nd:hcp-a3 _tdb: _tdb:CuNd-11Wan.tdb:HCP_A3, tdb:CuNd-96Du.tdb:HCP_A3, tdb:CuNd-96Zhu.tdb:HCP_A3 ### TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): HCP_A3, type code %A, sha256 `dcf3e69ab0b3b3be…` ~~~~text 41: PHASE HCP_A3 %A 2 1 0.5 ! 42: CONST HCP_A3 : CU ND : VA : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): HCP_A3, type code %A, sha256 `3ca7c1071943556d…` ~~~~text 42: PHASE HCP_A3 %A 2 1 0.5 ! 43: CONST HCP_A3 : CU ND : VA : ! ~~~~ [CuNd-96Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Zhu.tdb): HCP_A3, type code %A, sha256 `b7165268ed28e2fa…` ~~~~text 37: PHASE HCP_A3 %A 2 1 0.5 ! 38: CONST HCP_A3 : CU ND : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1007/BF02665998](https://doi.org/10.1007/BF02665998) W. Zhuang, Z.-Y. Qiao, S. Wei, J. Shen, J. Phase Equilib., 17, 508-21(1996). _assessment that models this phase_ - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase_ ## LIQUID (Cu–Nd) - Id: `phase:cu-nd:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 3 of 3 calculated diagram(s): 300–2500 K, x(Nd) 0–1 - Literature: 10 values (10 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:cu-nd:liquid) Names (6): _corpus: _corpus:phase:cu-nd:liquid _paper: _paper:10.1007/bf02665998:L, paper:10.1016/j.jallcom.2010.11.160:liquid _tdb: _tdb:CuNd-11Wan.tdb:LIQUID, tdb:CuNd-96Du.tdb:LIQUID, tdb:CuNd-96Zhu.tdb:LIQUID ### TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written [CuNd-11Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-11Wan.tdb): LIQUID, type code %, sha256 `dcf3e69ab0b3b3be…` ~~~~text 26: PHASE LIQUID:L % 1 1 ! 27: CONST LIQUID:L : CU ND : ! ~~~~ [CuNd-96Du.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Du.tdb): LIQUID, type code %, sha256 `3ca7c1071943556d…` ~~~~text 27: PHASE LIQUID:L % 1 1 ! 28: CONST LIQUID:L : CU ND : ! ~~~~ [CuNd-96Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CuNd-96Zhu.tdb): LIQUID, type code %, sha256 `b7165268ed28e2fa…` ~~~~text 22: PHASE LIQUID:L % 1 1 ! 23: CONST LIQUID:L : CU ND : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/BF02665998](https://doi.org/10.1007/BF02665998) W. Zhuang, Z.-Y. Qiao, S. Wei, J. Shen, J. Phase Equilib., 17, 508-21(1996). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2010.11.160](https://doi.org/10.1016/j.jallcom.2010.11.160) Peisheng Wang, Liangcai Zhou, Yong Du, Honghui Xu, Shuhong Liu, Li Chen et al., Thermodynamic optimization of the Cu–Nd system, Journal of Alloys and Compounds 509, 2679-2683 (2011). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/1359-6462(96)00033-4](https://doi.org/10.1016/1359-6462%2896%2900033-4) Yong Du, Narcís Clavaguera, Thermodynamic assessment of the Cu-Nd system, Scripta Materialia 34, 1609-1613 (1996). _assessment that models this phase_ - [doi:10.1016/0022-5088(83)90230-8](https://doi.org/10.1016/0022-5088%2883%2990230-8) M.M. Carnasciali, G.A. Costa, E.A. Franceschi, Phase equilibria in the Nd-Cu system, Journal of the Less Common Metals 92, 97-103 (1983). _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).