# Ni–Sm phases > Ni–Sm system: 15 phases (tier A 9, tier C 2, liquid 1, needs_review 3); 14 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/NI-SM.html · Markdown: https://data.orchid-project.org/phases/pages/NI-SM.md 15 phases (tier A 9, tier C 2, liquid 1, needs_review 3); 14 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=NI-SM) · [full JSON](https://data.orchid-project.org/phases/systems/NI-SM.json) · [Ni–Sm system page](https://data.orchid-project.org/systems/NI-SM.html) · [Markdown](https://data.orchid-project.org/phases/pages/NI-SM.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Ni–Sm system (15) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [BCC_A2](#phase-ni-sm-bcc-a2); _phase:ni-sm:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 1195.01–2500 K, x(Sm) 0.99992–1 | 0 | 2 | | [FCC_A1](#phase-ni-sm-fcc-a1); _phase:ni-sm:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1747.12 K, x(Sm) 0–0 | 5 | 2 | | [HCP_A3](#phase-ni-sm-hcp-a3); _phase:ni-sm:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 995.14–1195.06 K, x(Sm) 0.99988–1 | 4 | 2 | | [LIQUID](#phase-ni-sm-liquid); _phase:ni-sm:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 844.79–2500 K, x(Sm) 0–1 | 62 | 2 | | [NI17SM2](#phase-ni-sm-ni17sm2); _phase:ni-sm:ni17sm2_ | Ni17Th2 · hP38 · P6_3/mmc (194) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1564.56 K, x(Sm) 0.10526–0.10526 | 10 | 2 | | [NI19SM5](#phase-ni-sm-ni19sm5); _phase:ni-sm:ni19sm5_ | | needs_review | stable in 2 of 2 calculated diagram(s): 300–1555.91 K, x(Sm) 0.20833–0.20833 | 10 | 2 | | [NI2SM_C15](#phase-ni-sm-ni2sm-c15); _phase:ni-sm:ni2sm-c15_ | Cu2Mg · C15 · cF24 · Fd-3m (227) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1301.37 K, x(Sm) 0.33333–0.33333 | 10 | 2 | | [NI2SM3](#phase-ni-sm-ni2sm3); _phase:ni-sm:ni2sm3_ | | needs_review | stable in 1 of 1 calculated diagram(s): 872.7–904.58 K, x(Sm) 0.6–0.6 | 8 | 1 | | [NI3SM](#phase-ni-sm-ni3sm); _phase:ni-sm:ni3sm_ | Ni3Pu · hR12 · R-3m (166) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1408.94 K, x(Sm) 0.25–0.25 | 11 | 2 | | [NI3SM7_D102](#phase-ni-sm-ni3sm7-d102); _phase:ni-sm:ni3sm7-d102_ | Fe3Th7 · D10_2 · hP20 · P6_3mc (186) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 6 | 1 | | [NI5SM_D2D](#phase-ni-sm-ni5sm-d2d); _phase:ni-sm:ni5sm-d2d_ | CaCu5 · D2_d · hP6 · P6/mmm (191) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1749.26 K, x(Sm) 0.16667–0.16667 | 16 | 2 | | [NI7SM2](#phase-ni-sm-ni7sm2); _phase:ni-sm:ni7sm2_ | | needs_review | stable in 1 of 2 calculated diagram(s): 300–1493.3 K, x(Sm) 0.22222–0.22222 | 10 | 2 | | [NISM_B33](#phase-ni-sm-nism-b33); _phase:ni-sm:nism-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1349.44 K, x(Sm) 0.5–0.5 | 16 | 2 | | [NISM3_D011](#phase-ni-sm-nism3-d011); _phase:ni-sm:nism3-d011_ | Fe3C · D0_11 · oP16 · Pnma (62) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–953.73 K, x(Sm) 0.75–0.75 | 16 | 2 | | [RHOMB_C19](#phase-ni-sm-rhomb-c19); _phase:ni-sm:rhomb-c19_ | CdCl2 · C19 · hR3 · R-3m (166) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1191.87 K, x(Sm) 1–1 | 2 | 2 | ## BCC_A2 (Ni–Sm) - Id: `phase:ni-sm: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): 1195.01–2500 K, x(Sm) 0.99992–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:bcc-a2) Names (3): _corpus: _corpus:phase:ni-sm:bcc-a2 _tdb: _tdb:NiSm-16Rah.tdb:BCC_A2, tdb:NiSm-98Su.tdb:BCC_A2 ### TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): BCC_A2, type code %B, sha256 `b2c17f14c2f7462c…` ~~~~text 40: PHASE BCC_A2 %B 2 1 3 ! 41: CONST BCC_A2 : NI SM% : VA : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): BCC_A2, type code %B, sha256 `159dfa627118a14c…` ~~~~text 37: PHASE BCC_A2 %B 2 1 3 ! 38: CONST BCC_A2 : NI SM% : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase_ ## FCC_A1 (Ni–Sm) - Id: `phase:ni-sm:fcc-a1`; status `assigned` - Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high - Stoichiometry: Ni 1.0000 - Stability: stable in 2 of 2 calculated diagram(s): 300–1747.12 K, x(Sm) 0–0 - Literature: 5 values (5 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:fcc-a1) Names (5): _corpus: _corpus:phase:ni-sm:fcc-a1 _paper: _paper:10.1016/j.jallcom.2015.12.215:Fcc, paper:10.1016/s0925-8388(98)00560-x:α-Ni(fcc) _tdb: _tdb:NiSm-16Rah.tdb:FCC_A1, tdb:NiSm-98Su.tdb:FCC_A1 ### TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): FCC_A1, type code %A, sha256 `b2c17f14c2f7462c…` ~~~~text 35: PHASE FCC_A1 %A 2 1 1 ! 36: CONST FCC_A1 : NI : VA : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): FCC_A1, type code %A, sha256 `159dfa627118a14c…` ~~~~text 32: PHASE FCC_A1 %A 2 1 1 ! 33: CONST FCC_A1 : NI : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ ## HCP_A3 (Ni–Sm) - Id: `phase:ni-sm:hcp-a3`; status `assigned` - Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high - Stability: stable in 2 of 2 calculated diagram(s): 995.14–1195.06 K, x(Sm) 0.99988–1 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:hcp-a3) Names (4): _corpus: _corpus:phase:ni-sm:hcp-a3 _paper: _paper:10.1016/j.jallcom.2015.12.215:β-Sm _tdb: _tdb:NiSm-16Rah.tdb:HCP_A3, tdb:NiSm-98Su.tdb:HCP_A3 ### TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): HCP_A3, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 45: PHASE HCP_A3 % 2 1 0.5 ! 46: CONST HCP_A3 : NI SM% : VA : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): HCP_A3, type code %, sha256 `159dfa627118a14c…` ~~~~text 42: PHASE HCP_A3 % 2 1 0.5 ! 43: CONST HCP_A3 : NI SM% : VA : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; cited as the source of values for this phase_ - [doi:10.1007/s00706-012-0794-5](https://doi.org/10.1007/s00706-012-0794-5) Gabriella Borzone, Yuan Yuan, Simona Delsante, Nadia Parodi, The Sm–Ni system: new phases in the Sm-rich region, Monatsh Chem 143, 1299-1307 (2012). _cited as the source of values for this phase_ ## LIQUID (Ni–Sm) - Id: `phase:ni-sm:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 2 of 2 calculated diagram(s): 844.79–2500 K, x(Sm) 0–1 - Literature: 62 values (56 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:liquid) Names (5): _corpus: _corpus:phase:ni-sm:liquid _paper: _paper:10.1016/j.jallcom.2015.12.215:L, paper:10.1016/s0925-8388(98)00560-x:L _tdb: _tdb:NiSm-16Rah.tdb:LIQUID, tdb:NiSm-98Su.tdb:LIQUID ### TDB models of LIQUID (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): LIQUID, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 30: PHASE LIQUID:L % 1 1 ! 31: CONST LIQUID:L : NI SM : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): LIQUID, type code %, sha256 `159dfa627118a14c…` ~~~~text 27: PHASE LIQUID:L % 1 1 ! 28: CONST LIQUID:L : NI SM : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s00706-012-0794-5](https://doi.org/10.1007/s00706-012-0794-5) Gabriella Borzone, Yuan Yuan, Simona Delsante, Nadia Parodi, The Sm–Ni system: new phases in the Sm-rich region, Monatsh Chem 143, 1299-1307 (2012). _cited as the source of values for this phase_ ## NI17SM2 (Ni–Sm) - Id: `phase:ni-sm:ni17sm2`; status `assigned` - Structure: Ni17Th2 · hP38 · P6_3/mmc (194); type `st:ni17th2-hp38`; 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: Ni 0.8947, Sm 0.1053 - Stability: stable in 2 of 2 calculated diagram(s): 300–1564.56 K, x(Sm) 0.10526–0.10526 - Literature: 10 values (10 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:ni17sm2) Names (5): _corpus: _corpus:phase:ni-sm:ni17sm2 _paper: _paper:10.1016/j.jallcom.2015.12.215:Sm2Ni17, paper:10.1016/s0925-8388(98)00560-x:Ni17Sm2 _tdb: _tdb:NiSm-16Rah.tdb:NI17SM2, tdb:NiSm-98Su.tdb:NI17SM2 ### TDB models of NI17SM2 (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): NI17SM2, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 55: PHASE NI17SM2 % 2 17 2 ! 56: CONST NI17SM2 : NI : SM : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): NI17SM2, type code %, sha256 `159dfa627118a14c…` ~~~~text 52: PHASE NI17SM2 % 2 17 2 ! 53: CONST NI17SM2 : NI : SM : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ ## NI19SM5 (Ni–Sm) - Id: `phase:ni-sm:ni19sm5`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_rows_disagree - Candidate (literature_printed): (Ni19Sm5) · hR72 — printed with a label mapped to this phase - Candidate (sgte_mmc2): (Ni19Sm5) · hP96 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for NI19SM5: Ni19Sm5 - Candidate (sgte_mmc2): (Ni19Sm5) · hR72 · R-3m (166) — Hallstedt 2025 mmc2 row for NI19SM5: Ni19Sm5 - Stoichiometry: Ni 0.7917, Sm 0.2083 - Stability: stable in 2 of 2 calculated diagram(s): 300–1555.91 K, x(Sm) 0.20833–0.20833 - Literature: 10 values (7 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:ni19sm5) Names (5): _corpus: _corpus:phase:ni-sm:ni19sm5 _paper: _paper:10.1016/j.jallcom.2015.12.215:Sm5Ni19, paper:10.1016/s0925-8388(98)00560-x:Ni19Sm5 _tdb: _tdb:NiSm-16Rah.tdb:NI19SM5, tdb:NiSm-98Su.tdb:NI19SM5 ### TDB models of NI19SM5 (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): NI19SM5, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 65: PHASE NI19SM5 % 2 19 5 ! 66: CONST NI19SM5 : NI : SM : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): NI19SM5, type code %, sha256 `159dfa627118a14c…` ~~~~text 62: PHASE NI19SM5 % 2 19 5 ! 63: CONST NI19SM5 : NI : SM : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ ## NI2SM_C15 (Ni–Sm) - Id: `phase:ni-sm:ni2sm-c15`; status `assigned` - Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type `st:c15-cu2mg-cf24`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaaaacby and oqmd-17805, space group 227 - Stoichiometry: Ni 0.6667, Sm 0.3333 - Stability: stable in 2 of 2 calculated diagram(s): 300–1301.37 K, x(Sm) 0.33333–0.33333 - Literature: 10 values (10 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:ni2sm-c15) Names (7): _corpus: _corpus:phase:ni-sm:ni2sm-c15 _mp: _mp:mp-aaaaacby _oqmd: _oqmd:oqmd-17805 _paper: _paper:10.1016/j.jallcom.2015.12.215:SmNi2, paper:10.1016/s0925-8388(98)00560-x:Ni2Sm _tdb: _tdb:NiSm-16Rah.tdb:NI2SM_C15, tdb:NiSm-98Su.tdb:NI2SM_C15 ### TDB models of NI2SM_C15 (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): NI2SM_C15, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 80: PHASE NI2SM_C15 % 2 2 1 ! 81: CONST NI2SM_C15 : NI : SM : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): NI2SM_C15, type code %, sha256 `159dfa627118a14c…` ~~~~text 77: PHASE NI2SM_C15 % 2 2 1 ! 78: CONST NI2SM_C15 : NI : SM : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ ## NI2SM3 (Ni–Sm) - Id: `phase:ni-sm:ni2sm3`; status `needs_review` - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete - Candidate (literature_printed): (Ni2Sm3) · ? — printed with a label mapped to this phase - Candidate (sgte_mmc2): (Ni2Sm3) — Hallstedt 2025 mmc2 row for NI2SM3: Ni2Sm3 - Stoichiometry: Ni 0.4000, Sm 0.6000 - Stability: stable in 1 of 1 calculated diagram(s): 872.7–904.58 K, x(Sm) 0.6–0.6 - Literature: 8 values (8 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:ni2sm3) Names (3): _corpus: _corpus:phase:ni-sm:ni2sm3 _paper: _paper:10.1016/j.jallcom.2015.12.215:Sm3Ni2 _tdb: _tdb:NiSm-16Rah.tdb:NI2SM3 ### TDB models of NI2SM3 (1): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): NI2SM3, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 90: PHASE NI2SM3 % 2 2 3 ! 91: CONST NI2SM3 : NI : SM : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s00706-012-0794-5](https://doi.org/10.1007/s00706-012-0794-5) Gabriella Borzone, Yuan Yuan, Simona Delsante, Nadia Parodi, The Sm–Ni system: new phases in the Sm-rich region, Monatsh Chem 143, 1299-1307 (2012). _cited as the source of values for this phase_ ## NI3SM (Ni–Sm) - Id: `phase:ni-sm:ni3sm`; status `assigned` - Structure: Ni3Pu · hR12 · R-3m (166); type `st:ni3pu-hr12`; 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 (dft_space_group_166_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Ni 0.7500, Sm 0.2500 - Stability: stable in 2 of 2 calculated diagram(s): 300–1408.94 K, x(Sm) 0.25–0.25 - Literature: 11 values (8 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:ni3sm) Names (5): _corpus: _corpus:phase:ni-sm:ni3sm _paper: _paper:10.1016/j.jallcom.2015.12.215:SmNi3, paper:10.1016/s0925-8388(98)00560-x:Ni3Sm _tdb: _tdb:NiSm-16Rah.tdb:NI3SM, tdb:NiSm-98Su.tdb:NI3SM ### TDB models of NI3SM (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): NI3SM, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 75: PHASE NI3SM % 2 3 1 ! 76: CONST NI3SM : NI : SM : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): NI3SM, type code %, sha256 `159dfa627118a14c…` ~~~~text 72: PHASE NI3SM % 2 3 1 ! 73: CONST NI3SM : NI : SM : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ ## NI3SM7_D102 (Ni–Sm) - Id: `phase:ni-sm:ni3sm7-d102`; status `assigned` - Structure: Fe3Th7 · D10_2 · hP20 · P6_3mc (186); type `st:d10-2-fe3th7-hp20`; tier A: standard phase name; confidence high - Stoichiometry: Ni 0.3000, Sm 0.7000 - Stability: not stable in 1 calculated diagram(s) - Literature: 6 values (6 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:ni3sm7-d102) Names (3): _corpus: _corpus:phase:ni-sm:ni3sm7-d102 _paper: _paper:10.1016/j.jallcom.2015.12.215:Sm7Ni3 _tdb: _tdb:NiSm-16Rah.tdb:NI3SM7_D102 ### TDB models of NI3SM7_D102 (1): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): NI3SM7_D102, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 95: PHASE NI3SM7_D102 % 2 3 7 ! 96: CONST NI3SM7_D102 : NI : SM : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s00706-012-0794-5](https://doi.org/10.1007/s00706-012-0794-5) Gabriella Borzone, Yuan Yuan, Simona Delsante, Nadia Parodi, The Sm–Ni system: new phases in the Sm-rich region, Monatsh Chem 143, 1299-1307 (2012). _cited as the source of values for this phase_ ## NI5SM_D2D (Ni–Sm) - Id: `phase:ni-sm:ni5sm-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-aaaaabpj and oqmd-17806, space group 191 - Stoichiometry: Ni 0.8333, Sm 0.1667 - Stability: stable in 2 of 2 calculated diagram(s): 300–1749.26 K, x(Sm) 0.16667–0.16667 - Literature: 16 values (13 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:ni5sm-d2d) Names (7): _corpus: _corpus:phase:ni-sm:ni5sm-d2d _mp: _mp:mp-aaaaabpj _oqmd: _oqmd:oqmd-17806 _paper: _paper:10.1016/j.jallcom.2015.12.215:SmNi5, paper:10.1016/s0925-8388(98)00560-x:Ni5Sm _tdb: _tdb:NiSm-16Rah.tdb:NI5SM_D2D, tdb:NiSm-98Su.tdb:NI5SM_D2D ### TDB models of NI5SM_D2D (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): NI5SM_D2D, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 60: PHASE NI5SM_D2D % 2 5 1 ! 61: CONST NI5SM_D2D : NI : SM : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): NI5SM_D2D, type code %, sha256 `159dfa627118a14c…` ~~~~text 57: PHASE NI5SM_D2D % 2 5 1 ! 58: CONST NI5SM_D2D : NI : SM : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ ## NI7SM2 (Ni–Sm) - Id: `phase:ni-sm:ni7sm2`; status `needs_review` - No structure assigned. Why: mp_oqmd_space_groups_differ; no_structure_token; sgte_mmc2_rows_disagree - Candidate (dft_mp): R-3m (166) — on-hull MP Sm2Ni7 at x(SM)=0.2222 - Candidate (dft_oqmd): P63/mmc (194) — on-hull OQMD Ni7 Sm2 at x(SM)=0.2222 - Candidate (literature_printed): Ce2Ni7 · hP36 — printed with a label mapped to this phase - Candidate (sgte_mmc2): Ce2Ni7 · hP36 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for NI7SM2: Ni7Sm2 (high T), see also Co7Gd2 - Candidate (sgte_mmc2): Co7Gd2 · hR18 · R-3m (166) — Hallstedt 2025 mmc2 row for NI7SM2: Ni7Sm2 (low T), see also Ce2Ni7 - Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m, low T — NiSm-16Rah.tdb: 'Prototype Co7Gd2 (hR18, R-3m, low T) and Ce2Ni7 (hP36, P6_3/mmc, high T)' - Candidate (tdb_comment): Co7Gd2 · hR18 · R-3m, low T — NiSm-98Su.tdb: 'Prototype Co7Gd2 (hR18, R-3m, low T) and Ce2Ni7 (hP36, P6_3/mmc, high T)' - Stoichiometry: Ni 0.7778, Sm 0.2222 - Stability: stable in 1 of 2 calculated diagram(s): 300–1493.3 K, x(Sm) 0.22222–0.22222 - Literature: 10 values (7 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:ni7sm2) Names (5): _corpus: _corpus:phase:ni-sm:ni7sm2 _paper: _paper:10.1016/j.jallcom.2015.12.215:Sm2Ni7, paper:10.1016/s0925-8388(98)00560-x:Ni7Sm2 _tdb: _tdb:NiSm-16Rah.tdb:NI7SM2, tdb:NiSm-98Su.tdb:NI7SM2 ### TDB models of NI7SM2 (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): NI7SM2, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 70: PHASE NI7SM2 % 2 7 2 ! 71: CONST NI7SM2 : NI : SM : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): NI7SM2, type code %, sha256 `159dfa627118a14c…` ~~~~text 67: PHASE NI7SM2 % 2 7 2 ! 68: CONST NI7SM2 : NI : SM : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ ## NISM_B33 (Ni–Sm) - Id: `phase:ni-sm:nism-b33`; status `assigned` - Structure: CrB · B33 · oC8 · Cmcm (63); type `st:b33-crb-oc8`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaacewar and oqmd-30859, space group 63 - Stoichiometry: Ni 0.5000, Sm 0.5000 - Stability: stable in 2 of 2 calculated diagram(s): 300–1349.44 K, x(Sm) 0.5–0.5 - Literature: 16 values (16 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:nism-b33) Names (7): _corpus: _corpus:phase:ni-sm:nism-b33 _mp: _mp:mp-aaacewar _oqmd: _oqmd:oqmd-30859 _paper: _paper:10.1016/j.jallcom.2015.12.215:SmNi, paper:10.1016/s0925-8388(98)00560-x:NiSm _tdb: _tdb:NiSm-16Rah.tdb:NISM_B33, tdb:NiSm-98Su.tdb:NISM_B33 ### TDB models of NISM_B33 (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): NISM_B33, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 85: PHASE NISM_B33 % 2 1 1 ! 86: CONST NISM_B33 : NI : SM : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): NISM_B33, type code %, sha256 `159dfa627118a14c…` ~~~~text 82: PHASE NISM_B33 % 2 1 1 ! 83: CONST NISM_B33 : NI : SM : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s00706-012-0794-5](https://doi.org/10.1007/s00706-012-0794-5) Gabriella Borzone, Yuan Yuan, Simona Delsante, Nadia Parodi, The Sm–Ni system: new phases in the Sm-rich region, Monatsh Chem 143, 1299-1307 (2012). _cited as the source of values for this phase_ ## NISM3_D011 (Ni–Sm) - Id: `phase:ni-sm:nism3-d011`; status `assigned` - Structure: Fe3C · D0_11 · oP16 · Pnma (62); type `st:d0-11-fe3c-op16`; tier A: standard phase name; confidence high - Caveat: DFT agrees: on-hull mp-aaackyaj and oqmd-30857, space group 62 - Stoichiometry: Ni 0.2500, Sm 0.7500 - Stability: stable in 2 of 2 calculated diagram(s): 300–953.73 K, x(Sm) 0.75–0.75 - Literature: 16 values (16 accepted) from 2 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:nism3-d011) Names (7): _corpus: _corpus:phase:ni-sm:nism3-d011 _mp: _mp:mp-aaackyaj _oqmd: _oqmd:oqmd-30857 _paper: _paper:10.1016/j.jallcom.2015.12.215:Sm3Ni, paper:10.1016/s0925-8388(98)00560-x:NiSm3 _tdb: _tdb:NiSm-16Rah.tdb:NISM3_D011, tdb:NiSm-98Su.tdb:NISM3_D011 ### TDB models of NISM3_D011 (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): NISM3_D011, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 100: PHASE NISM3_D011 % 2 1 3 ! 101: CONST NISM3_D011 : NI : SM : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): NISM3_D011, type code %, sha256 `159dfa627118a14c…` ~~~~text 87: PHASE NISM3_D011 % 2 1 3 ! 88: CONST NISM3_D011 : NI : SM : ! ~~~~ Example references (3 of 3; assessments first): - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (2016). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; cited as the source of values for this phase; reports values for this phase_ - [doi:10.1007/s00706-012-0794-5](https://doi.org/10.1007/s00706-012-0794-5) Gabriella Borzone, Yuan Yuan, Simona Delsante, Nadia Parodi, The Sm–Ni system: new phases in the Sm-rich region, Monatsh Chem 143, 1299-1307 (2012). _cited as the source of values for this phase_ ## RHOMB_C19 (Ni–Sm) - Id: `phase:ni-sm:rhomb-c19`; status `assigned` - Structure: CdCl2 · C19 · hR3 · R-3m (166); type `st:c19-cdcl2-hr3`; tier A: standard phase name; confidence high - Stoichiometry: Sm 1.0000 - Stability: stable in 2 of 2 calculated diagram(s): 300–1191.87 K, x(Sm) 1–1 - Literature: 2 values (2 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-sm:rhomb-c19) Names (4): _corpus: _corpus:phase:ni-sm:rhomb-c19 _paper: _paper:10.1016/s0925-8388(98)00560-x:α-Sm(rhom) _tdb: _tdb:NiSm-16Rah.tdb:RHOMB_C19, tdb:NiSm-98Su.tdb:RHOMB_C19 ### TDB models of RHOMB_C19 (2): PHASE and CONSTITUENT statements as written [NiSm-16Rah.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-16Rah.tdb): RHOMB_C19, type code %, sha256 `b2c17f14c2f7462c…` ~~~~text 50: PHASE RHOMB_C19 % 1 1 ! 51: CONST RHOMB_C19 : SM : ! ~~~~ [NiSm-98Su.tdb](https://orchid-project.org/data/databases/sgte-binary/NiSm-98Su.tdb): RHOMB_C19, type code %, sha256 `159dfa627118a14c…` ~~~~text 47: PHASE RHOMB_C19 % 1 1 ! 48: CONST RHOMB_C19 : SM : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(98)00560-X](https://doi.org/10.1016/S0925-8388%2898%2900560-X) X. Su, W. Zhang, Z. Du, J. Alloys Compd., 278, 182-84(1998). _assessment that models this phase; reports values for this phase_ - [doi:10.1016/j.jallcom.2015.12.215](https://doi.org/10.1016/j.jallcom.2015.12.215) Z. Rahou, K. Mahdouk, Thermodynamic reassessment of the Sm–Ni binary system, Journal of Alloys and Compounds 664, 469-475 (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).