Ce–Fe phases

6 phases (tier A 4, liquid 1, needs_review 1); 5 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 · full JSON · Ce–Fe system page · Markdown · field reference

Phases of the Ce–Fe system (6)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:ce-fe:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–2499.67 K, x(Fe) 0–1	7	3
CE2FE17 phase:ce-fe:ce2fe17		needs_review	stable in 3 of 3 calculated diagram(s): 300–1344.81 K, x(Fe) 0.89474–0.89474	12	3
CEFE2_C15 phase:ce-fe:cefe2-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1205.9 K, x(Fe) 0.66667–0.66667	3	3
FCC_A1 phase:ce-fe:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1690 K, x(Fe) 0–1	14	3
HCP_A3 phase:ce-fe: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:ce-fe:liquid	liquid	liquid	stable in 3 of 3 calculated diagram(s): 864.63–2500 K, x(Fe) 0–1	14	3

BCC_A2 (Ce–Fe)

Id: phase:ce-fe: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): 300–2499.67 K, x(Fe) 0–1
Literature: 7 values (7 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ce-fe:bcc-a2
paper: paper:10.1016/j.calphad.2006.06.003:(αFe), paper:10.1016/j.calphad.2006.06.003:(δCe), paper:10.1016/j.calphad.2006.06.003:(δFe)
tdb: tdb:CeFe-06Su.tdb:BCC_A2, tdb:CeFe-19Zhu.tdb:BCC_A2, tdb:CeFe-23Su.tdb:BCC_A2

TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written

CeFe-06Su.tdb: BCC_A2, type code %B, sha256 a87f5d2608ea5fa6…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : CE% FE% : VA : !

CeFe-19Zhu.tdb: BCC_A2, type code %B, sha256 060cbd7329e66774…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : CE% FE% : VA : !

CeFe-23Su.tdb: BCC_A2, type code %B, sha256 6da70d9310da78a2…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : CE% FE% : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2006.06.003 Xuping Su, Jean-Claude Tedenac, Thermodynamic modeling of the ternary Ce–Fe–Sb system: Assessment of the Ce–Sb and Ce–Fe systems, Calphad 30, 455-460 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2018.11.009 D. Zhu, C. Xu, C. Li, C. Guo, Z. Du, Calphad, 64, 23-36(2019).
assessment that models this phase
doi:10.1016/j.calphad.2022.102506 D. Su, K.C. Yang, M.H. Rong, P.P. Liu, Q.R. Yao, J. Wang, Q. Chen, G.H. Rao, H.Y. Zhou, Calphad, 80, 102506(2023).
assessment that models this phase

CE2FE17 (Ce–Fe)

Id: phase:ce-fe:ce2fe17; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_rows_disagree
Candidate (literature_printed): Ni17Th2 · hP38 — printed with a label mapped to this phase
Candidate (sgte_mmc2): Ni17Th2 · hP38 · P6_3/mmc (194) — Hallstedt 2025 mmc2 row for CE2FE17: Ce2Fe17 (alpha), see also Th2Zn17
Candidate (sgte_mmc2): Th2Zn17 · hR19 · R-3m (166) — Hallstedt 2025 mmc2 row for CE2FE17: Ce2Fe17 (beta), see also Ni17Th2
Candidate (tdb_comment): Ni17Th2 · hP38 · P6_3/mmc — CeFe-06Su.tdb: 'Prototype Ni17Th2 (hP38, P6_3/mmc), alpha'
Candidate (tdb_comment): Th2Zn17 · hR19 · R-3m — CeFe-06Su.tdb: 'Prototype Th2Zn17 (hR19, R-3m), beta'
Candidate (tdb_comment): Ni17Th2 · hP38 · P6_3/mmc — CeFe-19Zhu.tdb: 'Prototype Ni17Th2 (hP38, P6_3/mmc), alpha'
Candidate (tdb_comment): Th2Zn17 · hR19 · R-3m — CeFe-19Zhu.tdb: 'Prototype Th2Zn17 (hR19, R-3m), beta'
Candidate (tdb_comment): Ni17Th2 · hP38 · P6_3/mmc — CeFe-23Su.tdb: 'Prototype Ni17Th2 (hP38, P6_3/mmc), alpha'
Stoichiometry: Ce 0.1053, Fe 0.8947
Stability: stable in 3 of 3 calculated diagram(s): 300–1344.81 K, x(Fe) 0.89474–0.89474
Literature: 12 values (12 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ce-fe:ce2fe17
paper: paper:10.1016/j.calphad.2006.06.003:Ce2Fe17
tdb: tdb:CeFe-06Su.tdb:CE2FE17, tdb:CeFe-19Zhu.tdb:CE2FE17, tdb:CeFe-23Su.tdb:CE2FE17

TDB models of CE2FE17 (3): PHASE and CONSTITUENT statements as written

CeFe-06Su.tdb: CE2FE17, type code %, sha256 a87f5d2608ea5fa6…

51: PHASE CE2FE17 % 2 2 17 !
52: CONST CE2FE17 : CE : FE : !

CeFe-19Zhu.tdb: CE2FE17, type code %, sha256 060cbd7329e66774…

48: PHASE CE2FE17 % 2 2 17 !
49: CONST CE2FE17 : CE : FE : !

CeFe-23Su.tdb: CE2FE17, type code %A, sha256 6da70d9310da78a2…

48: PHASE CE2FE17 %A 2 0.105263 0.894737 !
49: CONST CE2FE17 : CE : FE : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2006.06.003 Xuping Su, Jean-Claude Tedenac, Thermodynamic modeling of the ternary Ce–Fe–Sb system: Assessment of the Ce–Sb and Ce–Fe systems, Calphad 30, 455-460 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2018.11.009 D. Zhu, C. Xu, C. Li, C. Guo, Z. Du, Calphad, 64, 23-36(2019).
assessment that models this phase
doi:10.1016/j.calphad.2022.102506 D. Su, K.C. Yang, M.H. Rong, P.P. Liu, Q.R. Yao, J. Wang, Q. Chen, G.H. Rao, H.Y. Zhou, Calphad, 80, 102506(2023).
assessment that models this phase

CEFE2_C15 (Ce–Fe)

Id: phase:ce-fe:cefe2-c15; status assigned
Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type st:c15-cu2mg-cf24; tier A: standard phase name; confidence high
Stoichiometry: Ce 0.3333, Fe 0.6667
Stability: stable in 3 of 3 calculated diagram(s): 300–1205.9 K, x(Fe) 0.66667–0.66667
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ce-fe:cefe2-c15
paper: paper:10.1016/j.calphad.2006.06.003:CeFe2
tdb: tdb:CeFe-06Su.tdb:CEFE2_C15, tdb:CeFe-19Zhu.tdb:CEFE2_C15, tdb:CeFe-23Su.tdb:CEFE2_C15

TDB models of CEFE2_C15 (3): PHASE and CONSTITUENT statements as written

CeFe-06Su.tdb: CEFE2_C15, type code %, sha256 a87f5d2608ea5fa6…

45: PHASE CEFE2_C15 % 2 1 2 !
46: CONST CEFE2_C15 : CE : FE : !

CeFe-19Zhu.tdb: CEFE2_C15, type code %, sha256 060cbd7329e66774…

42: PHASE CEFE2_C15 % 2 1 2 !
43: CONST CEFE2_C15 : CE : FE : !

CeFe-23Su.tdb: CEFE2_C15, type code %A, sha256 6da70d9310da78a2…

42: PHASE CEFE2_C15 %A 2 0.333333 0.666667 !
43: CONST CEFE2_C15 : CE : FE : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2006.06.003 Xuping Su, Jean-Claude Tedenac, Thermodynamic modeling of the ternary Ce–Fe–Sb system: Assessment of the Ce–Sb and Ce–Fe systems, Calphad 30, 455-460 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2018.11.009 D. Zhu, C. Xu, C. Li, C. Guo, Z. Du, Calphad, 64, 23-36(2019).
assessment that models this phase
doi:10.1016/j.calphad.2022.102506 D. Su, K.C. Yang, M.H. Rong, P.P. Liu, Q.R. Yao, J. Wang, Q. Chen, G.H. Rao, H.Y. Zhou, Calphad, 80, 102506(2023).
assessment that models this phase

FCC_A1 (Ce–Fe)

Id: phase:ce-fe: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): 300–1690 K, x(Fe) 0–1
Literature: 14 values (14 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ce-fe:fcc-a1
paper: paper:10.1016/j.calphad.2006.06.003:(γCe), paper:10.1016/j.calphad.2006.06.003:(γFe)
tdb: tdb:CeFe-06Su.tdb:FCC_A1, tdb:CeFe-19Zhu.tdb:FCC_A1, tdb:CeFe-23Su.tdb:FCC_A1

TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written

CeFe-06Su.tdb: FCC_A1, type code %A, sha256 a87f5d2608ea5fa6…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : CE% FE% : VA : !

CeFe-19Zhu.tdb: FCC_A1, type code %A, sha256 060cbd7329e66774…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : CE% FE% : VA : !

CeFe-23Su.tdb: FCC_A1, type code %A, sha256 6da70d9310da78a2…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : CE% FE% : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2006.06.003 Xuping Su, Jean-Claude Tedenac, Thermodynamic modeling of the ternary Ce–Fe–Sb system: Assessment of the Ce–Sb and Ce–Fe systems, Calphad 30, 455-460 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2018.11.009 D. Zhu, C. Xu, C. Li, C. Guo, Z. Du, Calphad, 64, 23-36(2019).
assessment that models this phase
doi:10.1016/j.calphad.2022.102506 D. Su, K.C. Yang, M.H. Rong, P.P. Liu, Q.R. Yao, J. Wang, Q. Chen, G.H. Rao, H.Y. Zhou, Calphad, 80, 102506(2023).
assessment that models this phase

HCP_A3 (Ce–Fe)

Id: phase:ce-fe: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

Names (4): corpus: corpus:phase:ce-fe:hcp-a3
tdb: tdb:CeFe-06Su.tdb:HCP_A3, tdb:CeFe-19Zhu.tdb:HCP_A3, tdb:CeFe-23Su.tdb:HCP_A3

TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written

CeFe-06Su.tdb: HCP_A3, type code %A, sha256 a87f5d2608ea5fa6…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : CE FE : VA : !

CeFe-19Zhu.tdb: HCP_A3, type code %A, sha256 060cbd7329e66774…

37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : CE FE : VA : !

CeFe-23Su.tdb: HCP_A3, type code %A, sha256 6da70d9310da78a2…

37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : CE FE : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2006.06.003 Xuping Su, Jean-Claude Tedenac, Thermodynamic modeling of the ternary Ce–Fe–Sb system: Assessment of the Ce–Sb and Ce–Fe systems, Calphad 30, 455-460 (2006).
assessment that models this phase
doi:10.1016/j.calphad.2018.11.009 D. Zhu, C. Xu, C. Li, C. Guo, Z. Du, Calphad, 64, 23-36(2019).
assessment that models this phase
doi:10.1016/j.calphad.2022.102506 D. Su, K.C. Yang, M.H. Rong, P.P. Liu, Q.R. Yao, J. Wang, Q. Chen, G.H. Rao, H.Y. Zhou, Calphad, 80, 102506(2023).
assessment that models this phase

LIQUID (Ce–Fe)

Id: phase:ce-fe:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 864.63–2500 K, x(Fe) 0–1
Literature: 14 values (14 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ce-fe:liquid
paper: paper:10.1016/j.calphad.2006.06.003:Liq.
tdb: tdb:CeFe-06Su.tdb:LIQUID, tdb:CeFe-19Zhu.tdb:LIQUID, tdb:CeFe-23Su.tdb:LIQUID

TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written

CeFe-06Su.tdb: LIQUID, type code %, sha256 a87f5d2608ea5fa6…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : CE FE : !

CeFe-19Zhu.tdb: LIQUID, type code %, sha256 060cbd7329e66774…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : CE FE : !

CeFe-23Su.tdb: LIQUID, type code %, sha256 6da70d9310da78a2…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : CE FE : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2006.06.003 Xuping Su, Jean-Claude Tedenac, Thermodynamic modeling of the ternary Ce–Fe–Sb system: Assessment of the Ce–Sb and Ce–Fe systems, Calphad 30, 455-460 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2018.11.009 D. Zhu, C. Xu, C. Li, C. Guo, Z. Du, Calphad, 64, 23-36(2019).
assessment that models this phase
doi:10.1016/j.calphad.2022.102506 D. Su, K.C. Yang, M.H. Rong, P.P. Liu, Q.R. Yao, J. Wang, Q. Chen, G.H. Rao, H.Y. Zhou, Calphad, 80, 102506(2023).
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). doi: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). doi: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.

@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}
}