# Ni–P phases > Ni–P system: 14 phases (tier A 3, tier C 2, liquid 1, needs_review 8); 11 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-P.html · Markdown: https://data.orchid-project.org/phases/pages/NI-P.md 14 phases (tier A 3, tier C 2, liquid 1, needs_review 8); 11 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-P) · [full JSON](https://data.orchid-project.org/phases/systems/NI-P.json) · [Ni–P system page](https://data.orchid-project.org/systems/NI-P.html) · [Markdown](https://data.orchid-project.org/phases/pages/NI-P.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Ni–P system (14) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [BCC_A2](#phase-ni-p-bcc-a2); _phase:ni-p:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 3 | | [M2P_C22](#phase-ni-p-c22-m2p); _phase:ni-p:c22-m2p_ | Fe2P · C22 · hP9 · P-62m (189) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1386.87 K, x(P) 0.33333–0.33333 | 4 | 3 | | [M3P_D0E](#phase-ni-p-d0e-m3p); _phase:ni-p:d0e-m3p_ | Ni3P · D0_e · tI32 · I-4 (82) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1247.32 K, x(P) 0.25–0.25 | 4 | 3 | | [FCC_A1](#phase-ni-p-fcc-a1); _phase:ni-p:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1771.21 K, x(P) 0–0.00346 | 2 | 3 | | [HCP_A3](#phase-ni-p-hcp-a3); _phase:ni-p: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-ni-p-liquid); _phase:ni-p:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 300–2500 K, x(P) 0–1 | 12 | 3 | | [NI12P5](#phase-ni-p-ni12p5); _phase:ni-p:ni12p5_ | | needs_review | stable in 1 of 1 calculated diagram(s): 1014.77–1344.54 K, x(P) 0.29412–0.29412 | 0 | 1 | | [NI12P5_H](#phase-ni-p-ni12p5-h); _phase:ni-p:ni12p5-h_ | | needs_review | stable in 2 of 2 calculated diagram(s): 1273.85–1423.3 K, x(P) 0.294–0.29412 | 6 | 2 | | [NI12P5_L](#phase-ni-p-ni12p5-l); _phase:ni-p:ni12p5-l_ | | needs_review | stable in 2 of 2 calculated diagram(s): 300–1273.89 K, x(P) 0.294–0.29412 | 2 | 2 | | [NI5P2_H](#phase-ni-p-ni5p2-h); _phase:ni-p:ni5p2-h_ | | needs_review | stable in 3 of 3 calculated diagram(s): 1298.7–1451.85 K, x(P) 0.28571–0.286 | 6 | 3 | | [NI5P2_L](#phase-ni-p-ni5p2-l); _phase:ni-p:ni5p2-l_ | | needs_review | stable in 3 of 3 calculated diagram(s): 300–1301.28 K, x(P) 0.28571–0.286 | 4 | 3 | | [NI6P5](#phase-ni-p-ni6p5); _phase:ni-p:ni6p5_ | | needs_review | stable in 1 of 1 calculated diagram(s): 300–1169.35 K, x(P) 0.45455–0.45455 | 0 | 1 | | [RED_P](#phase-ni-p-p-red); _phase:ni-p:p-red_ | | needs_review | stable in 3 of 3 calculated diagram(s): 300–855 K, x(P) 1–1 | 0 | 3 | | [WHITE_P](#phase-ni-p-p-white); _phase:ni-p:p-white_ | | needs_review | not stable in 3 calculated diagram(s) | 0 | 3 | ## BCC_A2 (Ni–P) - Id: `phase:ni-p:bcc-a2`; status `assigned` - Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; 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:ni-p:bcc-a2) Names (4): _corpus: _corpus:phase:ni-p:bcc-a2 _tdb: _tdb:NiP-15Mie.tdb:BCC_A2, tdb:NiP-89NPL.tdb:BCC_A2, tdb:NiP-99Shi.tdb:BCC_A2 ### TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): BCC_A2, type code %B, sha256 `a366279c70ac4520…` ~~~~text 31: PHASE BCC_A2 %B 2 1 3 ! 32: CONST BCC_A2 : NI P : VA : ! ~~~~ [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): BCC_A2, type code %B, sha256 `4b112c50bbb75441…` ~~~~text 34: PHASE BCC_A2 %B 2 1 3 ! 35: CONST BCC_A2 : NI P : VA : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): BCC_A2, type code %B, sha256 `1e721e0ac49254b2…` ~~~~text 38: PHASE BCC_A2 %B 2 1 3 ! 39: CONST BCC_A2 : NI P : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _assessment that models this phase_ ## M2P_C22 (Ni–P) - Id: `phase:ni-p:c22-m2p`; status `assigned` - Structure: Fe2P · C22 · hP9 · P-62m (189); type `st:c22-fe2p-hp9`; 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 (unrecognised_name_tokens:M2P); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Ni 0.6667, P 0.3333 - Stability: stable in 3 of 3 calculated diagram(s): 300–1386.87 K, x(P) 0.33333–0.33333 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-p:c22-m2p) Names (6): _corpus: _corpus:phase:ni-p:c22-m2p, corpus:phase:ni-p:m2p-c22 _paper: _paper:10.1016/s0925-8388(98)00826-3:Ni2P _tdb: _tdb:NiP-15Mie.tdb:M2P_C22, tdb:NiP-89NPL.tdb:M2P_C22, tdb:NiP-99Shi.tdb:M2P_C22 ### TDB models of M2P_C22 (3): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): M2P_C22, type code %, sha256 `a366279c70ac4520…` ~~~~text 72: PHASE M2P_C22 % 2 2 1 ! 73: CONST M2P_C22 : NI : P : ! ~~~~ [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): M2P_C22, type code %, sha256 `4b112c50bbb75441…` ~~~~text 59: PHASE M2P_C22 % 2 2 1 ! 60: CONST M2P_C22 : NI : P : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): M2P_C22, type code %, sha256 `1e721e0ac49254b2…` ~~~~text 63: PHASE M2P_C22 % 2 2 1 ! 64: CONST M2P_C22 : NI : P : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ ## M3P_D0E (Ni–P) - Id: `phase:ni-p:d0e-m3p`; status `assigned` - Structure: Ni3P · D0_e · tI32 · I-4 (82); type `st:d0-e-ni3p-ti32`; 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: DFT agrees: on-hull mp-aaaaadki and oqmd-5265, space group 82 - Caveat: not certain from the name or DFT alone (unrecognised_name_tokens:M3P); structure as stated in the SGTE crystallographic table for this phase name and system - Stoichiometry: Ni 0.7500, P 0.2500 - Stability: stable in 3 of 3 calculated diagram(s): 300–1247.32 K, x(P) 0.25–0.25 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-p:d0e-m3p) Names (8): _corpus: _corpus:phase:ni-p:d0e-m3p, corpus:phase:ni-p:m3p-d0e _mp: _mp:mp-aaaaadki _oqmd: _oqmd:oqmd-5265 _paper: _paper:10.1016/s0925-8388(98)00826-3:Ni3P _tdb: _tdb:NiP-15Mie.tdb:M3P_D0E, tdb:NiP-89NPL.tdb:M3P_D0E, tdb:NiP-99Shi.tdb:M3P_D0E ### TDB models of M3P_D0E (3): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): M3P_D0E, type code %, sha256 `a366279c70ac4520…` ~~~~text 51: PHASE M3P_D0E % 2 3 1 ! 52: CONST M3P_D0E : NI : P : ! ~~~~ [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): M3P_D0E, type code %, sha256 `4b112c50bbb75441…` ~~~~text 54: PHASE M3P_D0E % 2 3 1 ! 55: CONST M3P_D0E : NI : P : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): M3P_D0E, type code %, sha256 `1e721e0ac49254b2…` ~~~~text 58: PHASE M3P_D0E % 2 3 1 ! 59: CONST M3P_D0E : NI : P : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ ## FCC_A1 (Ni–P) - Id: `phase:ni-p: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): 300–1771.21 K, x(P) 0–0.00346 - Literature: 2 values (2 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-p:fcc-a1) Names (5): _corpus: _corpus:phase:ni-p:fcc-a1 _paper: _paper:10.1016/s0925-8388(98)00826-3:f.c.c. _tdb: _tdb:NiP-15Mie.tdb:FCC_A1, tdb:NiP-89NPL.tdb:FCC_A1, tdb:NiP-99Shi.tdb:FCC_A1 ### TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): FCC_A1, type code %A, sha256 `a366279c70ac4520…` ~~~~text 26: PHASE FCC_A1 %A 2 1 1 ! 27: CONST FCC_A1 : NI% P : VA : ! ~~~~ [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): FCC_A1, type code %A, sha256 `4b112c50bbb75441…` ~~~~text 29: PHASE FCC_A1 %A 2 1 1 ! 30: CONST FCC_A1 : NI% P : VA : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): FCC_A1, type code %A, sha256 `1e721e0ac49254b2…` ~~~~text 33: PHASE FCC_A1 %A 2 1 1 ! 34: CONST FCC_A1 : NI% P : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ ## HCP_A3 (Ni–P) - Id: `phase:ni-p: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:ni-p:hcp-a3) Names (4): _corpus: _corpus:phase:ni-p:hcp-a3 _tdb: _tdb:NiP-15Mie.tdb:HCP_A3, tdb:NiP-89NPL.tdb:HCP_A3, tdb:NiP-99Shi.tdb:HCP_A3 ### TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): HCP_A3, type code %A, sha256 `a366279c70ac4520…` ~~~~text 36: PHASE HCP_A3 %A 2 1 0.5 ! 37: CONST HCP_A3 : NI P : VA : ! ~~~~ [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): HCP_A3, type code %A, sha256 `4b112c50bbb75441…` ~~~~text 39: PHASE HCP_A3 %A 2 1 0.5 ! 40: CONST HCP_A3 : NI P : VA : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): HCP_A3, type code %A, sha256 `1e721e0ac49254b2…` ~~~~text 43: PHASE HCP_A3 %A 2 1 0.5 ! 44: CONST HCP_A3 : NI P : VA : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _assessment that models this phase_ ## LIQUID (Ni–P) - Id: `phase:ni-p:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 3 of 3 calculated diagram(s): 300–2500 K, x(P) 0–1 - Literature: 12 values (12 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-p:liquid) Names (6): _corpus: _corpus:phase:ni-p:liquid _paper: _paper:10.1016/s0925-8388(98)00826-3:Liquid, paper:10.1016/s0925-8388(98)00826-3:liquid _tdb: _tdb:NiP-15Mie.tdb:LIQUID, tdb:NiP-89NPL.tdb:LIQUID, tdb:NiP-99Shi.tdb:LIQUID ### TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): LIQUID, type code %, sha256 `a366279c70ac4520…` ~~~~text 21: PHASE LIQUID:L % 1 1 ! 22: CONST LIQUID:L : NI P : ! ~~~~ [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): LIQUID, type code %, sha256 `4b112c50bbb75441…` ~~~~text 24: PHASE LIQUID:L % 1 1 ! 25: CONST LIQUID:L : NI P : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): LIQUID, type code %, sha256 `1e721e0ac49254b2…` ~~~~text 28: PHASE LIQUID:L % 1 1 ! 29: CONST LIQUID:L : NI P : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ ## NI12P5 (Ni–P) - Id: `phase:ni-p:ni12p5`; status `needs_review` - No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition - Candidate (dft_mp): I4/m (87) — on-hull MP Ni12P5 at x(P)=0.2941 - Candidate (dft_oqmd): I4/m (87) — on-hull OQMD Ni12 P5 at x(P)=0.2941 - Candidate (tdb_comment): ? · tI34 · I4/m — NiP-89NPL.tdb: 'Prototype ? (tI34, I4/m)' - Stoichiometry: Ni 0.7059, P 0.2941 - Stability: stable in 1 of 1 calculated diagram(s): 1014.77–1344.54 K, x(P) 0.29412–0.29412 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-p:ni12p5) Names (2): _corpus: _corpus:phase:ni-p:ni12p5 _tdb: _tdb:NiP-89NPL.tdb:NI12P5 ### TDB models of NI12P5 (1): PHASE and CONSTITUENT statements as written [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): NI12P5, type code %, sha256 `4b112c50bbb75441…` ~~~~text 72: PHASE NI12P5 % 2 12 5 ! 73: CONST NI12P5 : NI : P : ! ~~~~ ## NI12P5_H (Ni–P) - Id: `phase:ni-p:ni12p5-h`; status `needs_review` - No structure assigned. Why: models_disagree_on_composition; name_has_descriptive_tokens:H; no_structure_token; sgte_mmc2_row_incomplete - Candidate (dft_mp): I4/m (87) — on-hull MP Ni12P5 at x(P)=0.2941 - Candidate (dft_oqmd): I4/m (87) — on-hull OQMD Ni12 P5 at x(P)=0.2941 - Candidate (literature_printed): (h-Ni12P5) · ? — printed with a label mapped to this phase - Candidate (sgte_mmc2): (h-Ni12P5) — Hallstedt 2025 mmc2 row for NI12P5_H: Ni12P5 - Stability: stable in 2 of 2 calculated diagram(s): 1273.85–1423.3 K, x(P) 0.294–0.29412 - Literature: 6 values (6 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-p:ni12p5-h) Names (4): _corpus: _corpus:phase:ni-p:ni12p5-h _paper: _paper:10.1016/s0925-8388(98)00826-3:δNi12P5 _tdb: _tdb:NiP-15Mie.tdb:NI12P5_H, tdb:NiP-99Shi.tdb:NI12P5_H ### TDB models of NI12P5_H (2): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): NI12P5_H, type code %, sha256 `a366279c70ac4520…` ~~~~text 67: PHASE NI12P5_H % 2 12 5 ! 68: CONST NI12P5_H : NI : P : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): NI12P5_H, type code %, sha256 `1e721e0ac49254b2…` ~~~~text 79: PHASE NI12P5_H % 2 0.706 0.294 ! 80: CONST NI12P5_H : NI : P : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ ## NI12P5_L (Ni–P) - Id: `phase:ni-p:ni12p5-l`; status `needs_review` - No structure assigned. Why: assessment_declared_blocked_by:models_disagree_on_composition; models_disagree_on_composition; name_has_descriptive_tokens:L; no_structure_token - Candidate (dft_mp): I4/m (87) — on-hull MP Ni12P5 at x(P)=0.2941 - Candidate (dft_oqmd): I4/m (87) — on-hull OQMD Ni12 P5 at x(P)=0.2941 - Candidate (literature_printed): Ni12P5 · tI34 — printed with a label mapped to this phase - Candidate (sgte_mmc2): Ni12P5 · tI34 · I4/m (87) — Hallstedt 2025 mmc2 row for NI12P5_L: Ni12P5 - Candidate (tdb_comment): ? · tI34 · I4/m — NiP-15Mie.tdb: 'Prototype ? (tI34, I4/m)' - Candidate (tdb_comment): ? · tI34 · I4/m — NiP-99Shi.tdb: 'Prototype ? (tI34, I4/m)' - Stability: stable in 2 of 2 calculated diagram(s): 300–1273.89 K, x(P) 0.294–0.29412 - Literature: 2 values (2 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-p:ni12p5-l) Names (4): _corpus: _corpus:phase:ni-p:ni12p5-l _paper: _paper:10.1016/s0925-8388(98)00826-3:γNi12P5 _tdb: _tdb:NiP-15Mie.tdb:NI12P5_L, tdb:NiP-99Shi.tdb:NI12P5_L ### TDB models of NI12P5_L (2): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): NI12P5_L, type code %, sha256 `a366279c70ac4520…` ~~~~text 64: PHASE NI12P5_L % 2 12 5 ! 65: CONST NI12P5_L : NI : P : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): NI12P5_L, type code %, sha256 `1e721e0ac49254b2…` ~~~~text 76: PHASE NI12P5_L % 2 0.706 0.294 ! 77: CONST NI12P5_L : NI : P : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ ## NI5P2_H (Ni–P) - Id: `phase:ni-p:ni5p2-h`; status `needs_review` - No structure assigned. Why: models_disagree_on_composition; name_has_descriptive_tokens:H; no_structure_token; sgte_mmc2_row_incomplete - Candidate (literature_printed): (h-Ni5P2) · ? — printed with a label mapped to this phase - Candidate (sgte_mmc2): (h-Ni5P2) — Hallstedt 2025 mmc2 row for NI5P2_H: Ni5P2 - Stability: stable in 3 of 3 calculated diagram(s): 1298.7–1451.85 K, x(P) 0.28571–0.286 - Literature: 6 values (6 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-p:ni5p2-h) Names (5): _corpus: _corpus:phase:ni-p:ni5p2-h _paper: _paper:10.1016/s0925-8388(98)00826-3:βNi5P2 _tdb: _tdb:NiP-15Mie.tdb:NI5P2_H, tdb:NiP-89NPL.tdb:NI5P2_H, tdb:NiP-99Shi.tdb:NI5P2_H ### TDB models of NI5P2_H (3): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): NI5P2_H, type code %, sha256 `a366279c70ac4520…` ~~~~text 59: PHASE NI5P2_H % 2 5 2 ! 60: CONST NI5P2_H : NI : P : ! ~~~~ [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): NI5P2_H, type code %, sha256 `4b112c50bbb75441…` ~~~~text 67: PHASE NI5P2_H % 2 5 2 ! 68: CONST NI5P2_H : NI : P : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): NI5P2_H, type code %, sha256 `1e721e0ac49254b2…` ~~~~text 71: PHASE NI5P2_H % 2 0.714 0.286 ! 72: CONST NI5P2_H : NI : P : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ ## NI5P2_L (Ni–P) - Id: `phase:ni-p:ni5p2-l`; status `needs_review` - No structure assigned. Why: assessment_declared_blocked_by:models_disagree_on_composition; models_disagree_on_composition; name_has_descriptive_tokens:L; no_structure_token - Candidate (literature_printed): (l-Ni5P2) · hP168 — printed with a label mapped to this phase - Candidate (sgte_mmc2): (l-Ni5P2) · hP168 · P-3 (147) — Hallstedt 2025 mmc2 row for NI5P2_L: Ni5P2 - Candidate (tdb_comment): ? · hP168 · P-3 — NiP-15Mie.tdb: 'Prototype ? (hP168, P-3)' - Candidate (tdb_comment): ? · hP168 · P-3 — NiP-89NPL.tdb: 'Prototype ? (hP168, P-3)' - Candidate (tdb_comment): ? · hP168 · P-3 — NiP-99Shi.tdb: 'Prototype ? (hP168, P-3)' - Stability: stable in 3 of 3 calculated diagram(s): 300–1301.28 K, x(P) 0.28571–0.286 - Literature: 4 values (4 accepted) from 1 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-p:ni5p2-l) Names (5): _corpus: _corpus:phase:ni-p:ni5p2-l _paper: _paper:10.1016/s0925-8388(98)00826-3:αNi5P2 _tdb: _tdb:NiP-15Mie.tdb:NI5P2_L, tdb:NiP-89NPL.tdb:NI5P2_L, tdb:NiP-99Shi.tdb:NI5P2_L ### TDB models of NI5P2_L (3): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): NI5P2_L, type code %, sha256 `a366279c70ac4520…` ~~~~text 56: PHASE NI5P2_L % 2 5 2 ! 57: CONST NI5P2_L : NI : P : ! ~~~~ [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): NI5P2_L, type code %, sha256 `4b112c50bbb75441…` ~~~~text 64: PHASE NI5P2_L % 2 5 2 ! 65: CONST NI5P2_L : NI : P : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): NI5P2_L, type code %, sha256 `1e721e0ac49254b2…` ~~~~text 68: PHASE NI5P2_L % 2 0.714 0.286 ! 69: CONST NI5P2_L : NI : P : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _assessment that models this phase; reports values for this phase_ - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ ## NI6P5 (Ni–P) - Id: `phase:ni-p:ni6p5`; status `needs_review` - No structure assigned. Why: assessment_declared_compound_differs_from_model_composition; no_on_hull_entry_in_both; no_structure_token - Candidate (sgte_mmc2): Ni5P4 · hP36 · P6_3mc (186) — Hallstedt 2025 mmc2 row for NI6P5: Ni5P4 - Candidate (tdb_comment): Ni5P4 · hP36 · P6_3mc — NiP-89NPL.tdb: 'Prototype Ni5P4 (hP36, P6_3mc)' - Stoichiometry: Ni 0.5455, P 0.4545 - Stability: stable in 1 of 1 calculated diagram(s): 300–1169.35 K, x(P) 0.45455–0.45455 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-p:ni6p5) Names (2): _corpus: _corpus:phase:ni-p:ni6p5 _tdb: _tdb:NiP-89NPL.tdb:NI6P5 ### TDB models of NI6P5 (1): PHASE and CONSTITUENT statements as written [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): NI6P5, type code %, sha256 `4b112c50bbb75441…` ~~~~text 77: PHASE NI6P5 % 2 6 5 ! 78: CONST NI6P5 : NI : P : ! ~~~~ ## RED_P (Ni–P) - Id: `phase:ni-p:p-red`; status `needs_review` - No structure assigned. Why: name_has_descriptive_tokens:RED; no_structure_token - Candidate (sgte_mmc2): (Red P) — Hallstedt 2025 mmc2 row for RED_P: Red P - Stoichiometry: P 1.0000 - Stability: stable in 3 of 3 calculated diagram(s): 300–855 K, x(P) 1–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ni-p:p-red) Names (4): _corpus: _corpus:phase:ni-p:p-red _tdb: _tdb:NiP-15Mie.tdb:RED_P, tdb:NiP-89NPL.tdb:RED_P, tdb:NiP-99Shi.tdb:RED_P ### TDB models of RED_P (3): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): RED_P, type code %, sha256 `a366279c70ac4520…` ~~~~text 46: PHASE RED_P % 1 1 ! 47: CONST RED_P : P : ! ~~~~ [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): RED_P, type code %, sha256 `4b112c50bbb75441…` ~~~~text 49: PHASE RED_P % 1 1 ! 50: CONST RED_P : P : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): RED_P, type code %, sha256 `1e721e0ac49254b2…` ~~~~text 53: PHASE RED_P % 1 1 ! 54: CONST RED_P : P : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _assessment that models this phase_ ## WHITE_P (Ni–P) - Id: `phase:ni-p:p-white`; status `needs_review` - No structure assigned. Why: name_has_descriptive_tokens:WHITE; no_structure_token - Candidate (sgte_mmc2): (White P) — Hallstedt 2025 mmc2 row for WHITE_P: White P - Stoichiometry: P 1.0000 - 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:ni-p:p-white) Names (4): _corpus: _corpus:phase:ni-p:p-white _tdb: _tdb:NiP-15Mie.tdb:WHITE_P, tdb:NiP-89NPL.tdb:WHITE_P, tdb:NiP-99Shi.tdb:WHITE_P ### TDB models of WHITE_P (3): PHASE and CONSTITUENT statements as written [NiP-15Mie.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-15Mie.tdb): WHITE_P, type code %, sha256 `a366279c70ac4520…` ~~~~text 41: PHASE WHITE_P % 1 1 ! 42: CONST WHITE_P : P : ! ~~~~ [NiP-89NPL.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-89NPL.tdb): WHITE_P, type code %, sha256 `4b112c50bbb75441…` ~~~~text 44: PHASE WHITE_P % 1 1 ! 45: CONST WHITE_P : P : ! ~~~~ [NiP-99Shi.tdb](https://orchid-project.org/data/databases/sgte-binary/NiP-99Shi.tdb): WHITE_P, type code %, sha256 `1e721e0ac49254b2…` ~~~~text 48: PHASE WHITE_P % 1 1 ! 49: CONST WHITE_P : P : ! ~~~~ Example references (2 of 2; assessments first): - [doi:10.1007/s11669-014-0358-y](https://doi.org/10.1007/s11669-014-0358-y) Jyrki Miettinen, Gueorgui Vassilev, Thermodynamic Description of Ternary Fe-X-P Systems. Part 6: Fe-Ni-P, J. Phase Equilib. Diffus. 36, 78-87 (2015). _assessment that models this phase_ - [doi:10.1016/S0925-8388(98)00826-3](https://doi.org/10.1016/S0925-8388%2898%2900826-3) J.-H. Shim, H.-J. Chung, D.N. Lee, J. Alloys Compd., 282, 175-81(1999). _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).