# Fe–N phases > Fe–N system: 6 phases (tier A 3, tier C 1, liquid 1, gas 1); 4 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/FE-N.html · Markdown: https://data.orchid-project.org/phases/pages/FE-N.md 6 phases (tier A 3, tier C 1, liquid 1, gas 1); 4 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=FE-N) · [full JSON](https://data.orchid-project.org/phases/systems/FE-N.json) · [Fe–N system page](https://data.orchid-project.org/systems/FE-N.html) · [Markdown](https://data.orchid-project.org/phases/pages/FE-N.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md) Table: Phases of the Fe–N system (6) | Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models | |---|---|---|---|---:|---:| | [BCC_A2](#phase-fe-n-bcc-a2); _phase:fe-n:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 6 of 6 calculated diagram(s): 300–2499.79 K, x(N) 0–0.00058 | 0 | 6 | | [FCC_A1](#phase-fe-n-fcc-a1); _phase:fe-n:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 6 of 6 calculated diagram(s): 1172.13–1680.35 K, x(N) 0–0.00134 | 0 | 6 | | [FE4N_L1](#phase-fe-n-fe4n-l1); _phase:fe-n:fe4n-l1_ | Fe4N · L'1 · cP5 · Pm-3m (221) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | not stable in 6 calculated diagram(s) | 0 | 6 | | [HCP_A3](#phase-fe-n-hcp-a3); _phase:fe-n:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 6 calculated diagram(s) | 0 | 6 | | [LIQUID](#phase-fe-n-liquid); _phase:fe-n:liquid_ | liquid | liquid | stable in 6 of 6 calculated diagram(s): 1808.38–2500 K, x(N) 0–0.00216 | 0 | 6 | | [N2GAS](#phase-fe-n-n2gas); _phase:fe-n:n2gas_ | gas | gas | stable in 6 of 6 calculated diagram(s): 300–2500 K, x(N) 1–1 | 0 | 6 | ## BCC_A2 (Fe–N) - Id: `phase:fe-n: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 6 of 6 calculated diagram(s): 300–2499.79 K, x(N) 0–0.00058 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-n:bcc-a2) Names (7): _corpus: _corpus:phase:fe-n:bcc-a2 _tdb: _tdb:FeN-16Goe.tdb:BCC_A2, tdb:FeN-20Kou.tdb:BCC_A2, tdb:FeN-87Fri.tdb:BCC_A2, tdb:FeN-91Fri-LB.tdb:BCC_A2, tdb:FeN-93Du-mod.tdb:BCC_A2, tdb:FeN-93Du.tdb:BCC_A2 ### TDB models of BCC_A2 (6): PHASE and CONSTITUENT statements as written [FeN-16Goe.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-16Goe.tdb): BCC_A2, type code %B, sha256 `eddeea978f7c05e4…` ~~~~text 39: PHASE BCC_A2 %B 2 1 3 ! 40: CONST BCC_A2 : FE : N VA% : ! ~~~~ [FeN-20Kou.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-20Kou.tdb): BCC_A2, type code %B, sha256 `37f1edb7a040f1d2…` ~~~~text 37: PHASE BCC_A2 %B 2 1 3 ! 38: CONST BCC_A2 : FE : N VA% : ! ~~~~ [FeN-87Fri.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-87Fri.tdb): BCC_A2, type code %B, sha256 `b38a41b18e42bbef…` ~~~~text 35: PHASE BCC_A2 %B 2 1 3 ! 36: CONST BCC_A2 : FE : N VA% : ! ~~~~ [FeN-91Fri-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-91Fri-LB.tdb): BCC_A2, type code %B, sha256 `dd61cb0ecd6570c0…` ~~~~text 43: PHASE BCC_A2 %B 2 1 3 ! 44: CONST BCC_A2 : FE : N VA% : ! ~~~~ [FeN-93Du-mod.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du-mod.tdb): BCC_A2, type code %B, sha256 `73a8d69e4021ea32…` ~~~~text 41: PHASE BCC_A2 %B 2 1 3 ! 42: CONST BCC_A2 : FE : N VA% : ! ~~~~ [FeN-93Du.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du.tdb): BCC_A2, type code %B, sha256 `d651be243743cfad…` ~~~~text 36: PHASE BCC_A2 %B 2 1 3 ! 37: CONST BCC_A2 : FE : N VA% : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/BF02667880](https://doi.org/10.1007/BF02667880) H. Du, J. Phase Equilib., 14, 682-93(1993). _assessment that models this phase_ - [doi:10.1016/0364-5916(87)90004-6](https://doi.org/10.1016/0364-5916%2887%2990004-6) K. Frisk, Calphad, 11, 127-34(1987). _assessment that models this phase_ - [doi:10.1016/0364-5916(91)90028-I](https://doi.org/10.1016/0364-5916%2891%2990028-I) K. Frisk, Calphad, 15, 79-106(1991). _assessment that models this phase_ - [doi:10.1016/j.calphad.2020.102197](https://doi.org/10.1016/j.calphad.2020.102197) R. Kouba, K. Rayane, M. Keddam, Calphad, 71, 1ß2197(2020). _assessment that models this phase_ ## FCC_A1 (Fe–N) - Id: `phase:fe-n: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 6 of 6 calculated diagram(s): 1172.13–1680.35 K, x(N) 0–0.00134 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-n:fcc-a1) Names (7): _corpus: _corpus:phase:fe-n:fcc-a1 _tdb: _tdb:FeN-16Goe.tdb:FCC_A1, tdb:FeN-20Kou.tdb:FCC_A1, tdb:FeN-87Fri.tdb:FCC_A1, tdb:FeN-91Fri-LB.tdb:FCC_A1, tdb:FeN-93Du-mod.tdb:FCC_A1, tdb:FeN-93Du.tdb:FCC_A1 ### TDB models of FCC_A1 (6): PHASE and CONSTITUENT statements as written [FeN-16Goe.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-16Goe.tdb): FCC_A1, type code %A, sha256 `eddeea978f7c05e4…` ~~~~text 34: PHASE FCC_A1 %A 2 1 1 ! 35: CONST FCC_A1 : FE : N VA% : ! ~~~~ [FeN-20Kou.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-20Kou.tdb): FCC_A1, type code %A, sha256 `37f1edb7a040f1d2…` ~~~~text 32: PHASE FCC_A1 %A 2 1 1 ! 33: CONST FCC_A1 : FE : N VA% : ! ~~~~ [FeN-87Fri.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-87Fri.tdb): FCC_A1, type code %A, sha256 `b38a41b18e42bbef…` ~~~~text 30: PHASE FCC_A1 %A 2 1 1 ! 31: CONST FCC_A1 : FE : N VA% : ! ~~~~ [FeN-91Fri-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-91Fri-LB.tdb): FCC_A1, type code %A, sha256 `dd61cb0ecd6570c0…` ~~~~text 38: PHASE FCC_A1 %A 2 1 1 ! 39: CONST FCC_A1 : FE : N VA% : ! ~~~~ [FeN-93Du-mod.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du-mod.tdb): FCC_A1, type code %A, sha256 `73a8d69e4021ea32…` ~~~~text 36: PHASE FCC_A1 %A 2 1 1 ! 37: CONST FCC_A1 : FE : N VA% : ! ~~~~ [FeN-93Du.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du.tdb): FCC_A1, type code %A, sha256 `d651be243743cfad…` ~~~~text 31: PHASE FCC_A1 %A 2 1 1 ! 32: CONST FCC_A1 : FE : N VA% : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/BF02667880](https://doi.org/10.1007/BF02667880) H. Du, J. Phase Equilib., 14, 682-93(1993). _assessment that models this phase_ - [doi:10.1016/0364-5916(87)90004-6](https://doi.org/10.1016/0364-5916%2887%2990004-6) K. Frisk, Calphad, 11, 127-34(1987). _assessment that models this phase_ - [doi:10.1016/0364-5916(91)90028-I](https://doi.org/10.1016/0364-5916%2891%2990028-I) K. Frisk, Calphad, 15, 79-106(1991). _assessment that models this phase_ - [doi:10.1016/j.calphad.2020.102197](https://doi.org/10.1016/j.calphad.2020.102197) R. Kouba, K. Rayane, M. Keddam, Calphad, 71, 1ß2197(2020). _assessment that models this phase_ ## FE4N_L1 (Fe–N) - Id: `phase:fe-n:fe4n-l1`; status `assigned` - Structure: Fe4N · L'1 · cP5 · Pm-3m (221); type `st:l-1-fe4n-cp5`; 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 (name_has_descriptive_tokens:L1, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system - Stability: not stable in 6 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-n:fe4n-l1) Names (7): _corpus: _corpus:phase:fe-n:fe4n-l1 _tdb: _tdb:FeN-16Goe.tdb:FE4N_L1, tdb:FeN-20Kou.tdb:FE4N_L1, tdb:FeN-87Fri.tdb:FE4N_L1, tdb:FeN-91Fri-LB.tdb:FE4N_L1, tdb:FeN-93Du-mod.tdb:FE4N_L1, tdb:FeN-93Du.tdb:FE4N_L1 ### TDB models of FE4N_L1 (6): PHASE and CONSTITUENT statements as written [FeN-16Goe.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-16Goe.tdb): FE4N_L1, type code %, sha256 `eddeea978f7c05e4…` ~~~~text 49: PHASE FE4N_L1 % 2 4 1 ! 50: CONST FE4N_L1 : FE : N VA :! ~~~~ [FeN-20Kou.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-20Kou.tdb): FE4N_L1, type code %, sha256 `37f1edb7a040f1d2…` ~~~~text 47: PHASE FE4N_L1 % 2 4 1 ! 48: CONST FE4N_L1 : FE : N VA :! ~~~~ [FeN-87Fri.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-87Fri.tdb): FE4N_L1, type code %, sha256 `b38a41b18e42bbef…` ~~~~text 45: PHASE FE4N_L1 % 2 4 1 ! 46: CONST FE4N_L1 : FE : N :! ~~~~ [FeN-91Fri-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-91Fri-LB.tdb): FE4N_L1, type code %, sha256 `dd61cb0ecd6570c0…` ~~~~text 53: PHASE FE4N_L1 % 2 4 1 ! 54: CONST FE4N_L1 : FE : N :! ~~~~ [FeN-93Du-mod.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du-mod.tdb): FE4N_L1, type code %, sha256 `73a8d69e4021ea32…` ~~~~text 51: PHASE FE4N_L1 % 2 4 1 ! 52: CONST FE4N_L1 : FE : N VA :! ~~~~ [FeN-93Du.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du.tdb): FE4N_L1, type code %, sha256 `d651be243743cfad…` ~~~~text 46: PHASE FE4N_L1 % 2 4 1 ! 47: CONST FE4N_L1 : FE : N VA :! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/BF02667880](https://doi.org/10.1007/BF02667880) H. Du, J. Phase Equilib., 14, 682-93(1993). _assessment that models this phase_ - [doi:10.1016/0364-5916(87)90004-6](https://doi.org/10.1016/0364-5916%2887%2990004-6) K. Frisk, Calphad, 11, 127-34(1987). _assessment that models this phase_ - [doi:10.1016/0364-5916(91)90028-I](https://doi.org/10.1016/0364-5916%2891%2990028-I) K. Frisk, Calphad, 15, 79-106(1991). _assessment that models this phase_ - [doi:10.1016/j.calphad.2020.102197](https://doi.org/10.1016/j.calphad.2020.102197) R. Kouba, K. Rayane, M. Keddam, Calphad, 71, 1ß2197(2020). _assessment that models this phase_ ## HCP_A3 (Fe–N) - Id: `phase:fe-n: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 6 calculated diagram(s) - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-n:hcp-a3) Names (7): _corpus: _corpus:phase:fe-n:hcp-a3 _tdb: _tdb:FeN-16Goe.tdb:HCP_A3, tdb:FeN-20Kou.tdb:HCP_A3, tdb:FeN-87Fri.tdb:HCP_A3, tdb:FeN-91Fri-LB.tdb:HCP_A3, tdb:FeN-93Du-mod.tdb:HCP_A3, tdb:FeN-93Du.tdb:HCP_A3 ### TDB models of HCP_A3 (6): PHASE and CONSTITUENT statements as written [FeN-16Goe.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-16Goe.tdb): HCP_A3, type code %, sha256 `eddeea978f7c05e4…` ~~~~text 44: PHASE HCP_A3 % 2 1 0.5 ! 45: CONST HCP_A3 : FE : N VA% : ! ~~~~ [FeN-20Kou.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-20Kou.tdb): HCP_A3, type code %, sha256 `37f1edb7a040f1d2…` ~~~~text 42: PHASE HCP_A3 % 2 1 0.5 ! 43: CONST HCP_A3 : FE : N VA% : ! ~~~~ [FeN-87Fri.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-87Fri.tdb): HCP_A3, type code %, sha256 `b38a41b18e42bbef…` ~~~~text 40: PHASE HCP_A3 % 2 1 0.5 ! 41: CONST HCP_A3 : FE : N VA% : ! ~~~~ [FeN-91Fri-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-91Fri-LB.tdb): HCP_A3, type code %, sha256 `dd61cb0ecd6570c0…` ~~~~text 48: PHASE HCP_A3 % 2 1 0.5 ! 49: CONST HCP_A3 : FE : N VA% : ! ~~~~ [FeN-93Du-mod.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du-mod.tdb): HCP_A3, type code %, sha256 `73a8d69e4021ea32…` ~~~~text 46: PHASE HCP_A3 % 2 1 0.5 ! 47: CONST HCP_A3 : FE : N VA% : ! ~~~~ [FeN-93Du.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du.tdb): HCP_A3, type code %, sha256 `d651be243743cfad…` ~~~~text 41: PHASE HCP_A3 % 2 1 0.5 ! 42: CONST HCP_A3 : FE : N VA% : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/BF02667880](https://doi.org/10.1007/BF02667880) H. Du, J. Phase Equilib., 14, 682-93(1993). _assessment that models this phase_ - [doi:10.1016/0364-5916(87)90004-6](https://doi.org/10.1016/0364-5916%2887%2990004-6) K. Frisk, Calphad, 11, 127-34(1987). _assessment that models this phase_ - [doi:10.1016/0364-5916(91)90028-I](https://doi.org/10.1016/0364-5916%2891%2990028-I) K. Frisk, Calphad, 15, 79-106(1991). _assessment that models this phase_ - [doi:10.1016/j.calphad.2020.102197](https://doi.org/10.1016/j.calphad.2020.102197) R. Kouba, K. Rayane, M. Keddam, Calphad, 71, 1ß2197(2020). _assessment that models this phase_ ## LIQUID (Fe–N) - Id: `phase:fe-n:liquid`; status `assigned` - Structure: liquid; type `st:liquid`; liquid; confidence high - Stability: stable in 6 of 6 calculated diagram(s): 1808.38–2500 K, x(N) 0–0.00216 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-n:liquid) Names (7): _corpus: _corpus:phase:fe-n:liquid _tdb: _tdb:FeN-16Goe.tdb:LIQUID, tdb:FeN-20Kou.tdb:LIQUID, tdb:FeN-87Fri.tdb:LIQUID, tdb:FeN-91Fri-LB.tdb:LIQUID, tdb:FeN-93Du-mod.tdb:LIQUID, tdb:FeN-93Du.tdb:LIQUID ### TDB models of LIQUID (6): PHASE and CONSTITUENT statements as written [FeN-16Goe.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-16Goe.tdb): LIQUID, type code %, sha256 `eddeea978f7c05e4…` ~~~~text 29: PHASE LIQUID:L % 1 1 ! 30: CONST LIQUID:L : FE N : ! ~~~~ [FeN-20Kou.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-20Kou.tdb): LIQUID, type code %, sha256 `37f1edb7a040f1d2…` ~~~~text 27: PHASE LIQUID:L % 1 1 ! 28: CONST LIQUID:L : FE N : ! ~~~~ [FeN-87Fri.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-87Fri.tdb): LIQUID, type code %, sha256 `b38a41b18e42bbef…` ~~~~text 25: PHASE LIQUID:L % 1 1 ! 26: CONST LIQUID:L : FE N : ! ~~~~ [FeN-91Fri-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-91Fri-LB.tdb): LIQUID, type code %, sha256 `dd61cb0ecd6570c0…` ~~~~text 33: PHASE LIQUID:L % 1 1 ! 34: CONST LIQUID:L : FE N : ! ~~~~ [FeN-93Du-mod.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du-mod.tdb): LIQUID, type code %, sha256 `73a8d69e4021ea32…` ~~~~text 31: PHASE LIQUID:L % 1 1 ! 32: CONST LIQUID:L : FE N : ! ~~~~ [FeN-93Du.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du.tdb): LIQUID, type code %, sha256 `d651be243743cfad…` ~~~~text 26: PHASE LIQUID:L % 1 1 ! 27: CONST LIQUID:L : FE N : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/BF02667880](https://doi.org/10.1007/BF02667880) H. Du, J. Phase Equilib., 14, 682-93(1993). _assessment that models this phase_ - [doi:10.1016/0364-5916(87)90004-6](https://doi.org/10.1016/0364-5916%2887%2990004-6) K. Frisk, Calphad, 11, 127-34(1987). _assessment that models this phase_ - [doi:10.1016/0364-5916(91)90028-I](https://doi.org/10.1016/0364-5916%2891%2990028-I) K. Frisk, Calphad, 15, 79-106(1991). _assessment that models this phase_ - [doi:10.1016/j.calphad.2020.102197](https://doi.org/10.1016/j.calphad.2020.102197) R. Kouba, K. Rayane, M. Keddam, Calphad, 71, 1ß2197(2020). _assessment that models this phase_ ## N2GAS (Fe–N) - Id: `phase:fe-n:n2gas`; status `assigned` - Structure: gas; type `st:gas`; gas; confidence high - Stability: stable in 6 of 6 calculated diagram(s): 300–2500 K, x(N) 1–1 - Literature: 0 values (0 accepted) from 0 papers - Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:fe-n:n2gas) Names (7): _corpus: _corpus:phase:fe-n:n2gas _tdb: _tdb:FeN-16Goe.tdb:N2GAS, tdb:FeN-20Kou.tdb:N2GAS, tdb:FeN-87Fri.tdb:N2GAS, tdb:FeN-91Fri-LB.tdb:N2GAS, tdb:FeN-93Du-mod.tdb:N2GAS, tdb:FeN-93Du.tdb:N2GAS ### TDB models of N2GAS (6): PHASE and CONSTITUENT statements as written [FeN-16Goe.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-16Goe.tdb): N2GAS, type code %, sha256 `eddeea978f7c05e4…` ~~~~text 52: PHASE N2GAS % 1 1 ! 53: CONST N2GAS : N2 : ! ~~~~ [FeN-20Kou.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-20Kou.tdb): N2GAS, type code %, sha256 `37f1edb7a040f1d2…` ~~~~text 50: PHASE N2GAS % 1 1 ! 51: CONST N2GAS : N2 : ! ~~~~ [FeN-87Fri.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-87Fri.tdb): N2GAS, type code %, sha256 `b38a41b18e42bbef…` ~~~~text 48: PHASE N2GAS % 1 1 ! 49: CONST N2GAS : N2 : ! ~~~~ [FeN-91Fri-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-91Fri-LB.tdb): N2GAS, type code %, sha256 `dd61cb0ecd6570c0…` ~~~~text 56: PHASE N2GAS % 1 1 ! 57: CONST N2GAS : N2 : ! ~~~~ [FeN-93Du-mod.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du-mod.tdb): N2GAS, type code %, sha256 `73a8d69e4021ea32…` ~~~~text 54: PHASE N2GAS % 1 1 ! 55: CONST N2GAS : N2 : ! ~~~~ [FeN-93Du.tdb](https://orchid-project.org/data/databases/sgte-binary/FeN-93Du.tdb): N2GAS, type code %, sha256 `d651be243743cfad…` ~~~~text 49: PHASE N2GAS % 1 1 ! 50: CONST N2GAS : N2 : ! ~~~~ Example references (4 of 4; assessments first): - [doi:10.1007/BF02667880](https://doi.org/10.1007/BF02667880) H. Du, J. Phase Equilib., 14, 682-93(1993). _assessment that models this phase_ - [doi:10.1016/0364-5916(87)90004-6](https://doi.org/10.1016/0364-5916%2887%2990004-6) K. Frisk, Calphad, 11, 127-34(1987). _assessment that models this phase_ - [doi:10.1016/0364-5916(91)90028-I](https://doi.org/10.1016/0364-5916%2891%2990028-I) K. Frisk, Calphad, 15, 79-106(1991). _assessment that models this phase_ - [doi:10.1016/j.calphad.2020.102197](https://doi.org/10.1016/j.calphad.2020.102197) R. Kouba, K. Rayane, M. Keddam, Calphad, 71, 1ß2197(2020). _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).