Ce–Y phases

5 phases (tier A 4, liquid 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–Y system page · Markdown · field reference

Phases of the Ce–Y system (5)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:ce-y:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 954.4–2499.5 K, x(Y) 0–1	10	3
DHCP phase:ce-y:dhcp-a3	alpha-La · A3' · hP4 · P6_3/mmc (194)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1055.23 K, x(Y) 0–0.5458	10	3
FCC_A1 phase:ce-y:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1001.33 K, x(Y) 0–0.12683	6	3
HCP_A3 phase:ce-y:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1752.15 K, x(Y) 0.6283–1	4	3
LIQUID phase:ce-y:liquid	liquid	liquid	stable in 3 of 3 calculated diagram(s): 1060.35–2500 K, x(Y) 0–1	0	3

BCC_A2 (Ce–Y)

Id: phase:ce-y: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): 954.4–2499.5 K, x(Y) 0–1
Literature: 10 values (10 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ce-y:bcc-a2
paper: paper:10.1016/j.calphad.2006.02.002:bcc_a2, paper:10.1016/j.ssi.2008.06.011:bcc
tdb: tdb:CeY-06Men.tdb:BCC_A2, tdb:CeY-08Dju.tdb:BCC_A2, tdb:CeY-08Guo.tdb:BCC_A2

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

CeY-06Men.tdb: BCC_A2, type code %B, sha256 1ae8c2335e970ff1…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : CE% Y% : VA : !

CeY-08Dju.tdb: BCC_A2, type code %B, sha256 dec06e9f8d832c22…

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

CeY-08Guo.tdb: BCC_A2, type code %B, sha256 6052d6790f767fad…

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

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2006.02.002 F.G. Meng, L.B. Liu, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Ce–Y system, Calphad 30, 323-325 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.ssi.2008.06.011 D DJUROVIC, M ZINKEVICH, F ALDINGER, Thermodynamic modeling of the cerium–yttrium–oxygen system, Solid State Ionics 179, 1902-1911 (2008).
assessment that models this phase; reports values for this phase
doi:10.3139/146.101685 Cuiping Guo, Zhenmin Du, Changrong Li, Thermodynamic description of the Ce-Mg-Y and Mg-Nd-Y systems, International Journal of Materials Research 99, 650-688 (2008).
assessment that models this phase
doi:10.1007/s11661-997-0129-z H. Flandorfer, M. Giovannini, A. Saccone, R. Rogi, R. Ferro, The Ce-Mg-Y system, Metall Mater Trans A 28, 265-276 (1997).
cited as the source of values for this phase
doi:10.1007/bf02892383 K. A. Gschneidner, F. W. Calderwood, The Ce−Y (Cerium−Yttrium) system, Bulletin of Alloy Phase Diagrams 3, 192-194 (1982).
cited as the source of values for this phase

DHCP (Ce–Y)

Id: phase:ce-y:dhcp-a3; status assigned
Structure: alpha-La · A3' · hP4 · P6_3/mmc (194); type st:a3-alpha-la-hp4; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–1055.23 K, x(Y) 0–0.5458
Literature: 10 values (10 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ce-y:dhcp-a3, corpus:phase:ce-y:dhcp
paper: paper:10.1016/j.calphad.2006.02.002:dhcp, paper:10.1016/j.ssi.2008.06.011:dhcp
tdb: tdb:CeY-06Men.tdb:DHCP, tdb:CeY-08Dju.tdb:DHCP, tdb:CeY-08Guo.tdb:DHCP

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

CeY-06Men.tdb: DHCP, type code %A, sha256 1ae8c2335e970ff1…

43: PHASE DHCP %A 1 1 !
44: CONST DHCP : CE% Y : !

CeY-08Dju.tdb: DHCP, type code %A, sha256 dec06e9f8d832c22…

45: PHASE DHCP %A 1 1 !
46: CONST DHCP : CE Y : !

CeY-08Guo.tdb: DHCP, type code %A, sha256 6052d6790f767fad…

42: PHASE DHCP %A 1 1 !
43: CONST DHCP : CE% Y : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2006.02.002 F.G. Meng, L.B. Liu, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Ce–Y system, Calphad 30, 323-325 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.ssi.2008.06.011 D DJUROVIC, M ZINKEVICH, F ALDINGER, Thermodynamic modeling of the cerium–yttrium–oxygen system, Solid State Ionics 179, 1902-1911 (2008).
assessment that models this phase; reports values for this phase
doi:10.3139/146.101685 Cuiping Guo, Zhenmin Du, Changrong Li, Thermodynamic description of the Ce-Mg-Y and Mg-Nd-Y systems, International Journal of Materials Research 99, 650-688 (2008).
assessment that models this phase
doi:10.1007/s11661-997-0129-z H. Flandorfer, M. Giovannini, A. Saccone, R. Rogi, R. Ferro, The Ce-Mg-Y system, Metall Mater Trans A 28, 265-276 (1997).
cited as the source of values for this phase
doi:10.1007/bf02892383 K. A. Gschneidner, F. W. Calderwood, The Ce−Y (Cerium−Yttrium) system, Bulletin of Alloy Phase Diagrams 3, 192-194 (1982).
cited as the source of values for this phase

FCC_A1 (Ce–Y)

Id: phase:ce-y: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): 300–1001.33 K, x(Y) 0–0.12683
Literature: 6 values (6 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ce-y:fcc-a1
paper: paper:10.1016/j.calphad.2006.02.002:fcc_a1, paper:10.1016/j.ssi.2008.06.011:fcc
tdb: tdb:CeY-06Men.tdb:FCC_A1, tdb:CeY-08Dju.tdb:FCC_A1, tdb:CeY-08Guo.tdb:FCC_A1

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

CeY-06Men.tdb: FCC_A1, type code %A, sha256 1ae8c2335e970ff1…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : CE% Y : VA : !

CeY-08Dju.tdb: FCC_A1, type code %A, sha256 dec06e9f8d832c22…

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

CeY-08Guo.tdb: FCC_A1, type code %A, sha256 6052d6790f767fad…

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

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2006.02.002 F.G. Meng, L.B. Liu, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Ce–Y system, Calphad 30, 323-325 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.ssi.2008.06.011 D DJUROVIC, M ZINKEVICH, F ALDINGER, Thermodynamic modeling of the cerium–yttrium–oxygen system, Solid State Ionics 179, 1902-1911 (2008).
assessment that models this phase; reports values for this phase
doi:10.3139/146.101685 Cuiping Guo, Zhenmin Du, Changrong Li, Thermodynamic description of the Ce-Mg-Y and Mg-Nd-Y systems, International Journal of Materials Research 99, 650-688 (2008).
assessment that models this phase
doi:10.1007/bf02892383 K. A. Gschneidner, F. W. Calderwood, The Ce−Y (Cerium−Yttrium) system, Bulletin of Alloy Phase Diagrams 3, 192-194 (1982).
cited as the source of values for this phase
doi:10.1007/s11661-997-0129-z H. Flandorfer, M. Giovannini, A. Saccone, R. Rogi, R. Ferro, The Ce-Mg-Y system, Metall Mater Trans A 28, 265-276 (1997).
cited as the source of values for this phase

HCP_A3 (Ce–Y)

Id: phase:ce-y: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 3 of 3 calculated diagram(s): 300–1752.15 K, x(Y) 0.6283–1
Literature: 4 values (4 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ce-y:hcp-a3
paper: paper:10.1016/j.calphad.2006.02.002:hcp, paper:10.1016/j.ssi.2008.06.011:hcp
tdb: tdb:CeY-06Men.tdb:HCP_A3, tdb:CeY-08Dju.tdb:HCP_A3, tdb:CeY-08Guo.tdb:HCP_A3

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

CeY-06Men.tdb: HCP_A3, type code %A, sha256 1ae8c2335e970ff1…

38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : CE Y% : VA : !

CeY-08Dju.tdb: HCP_A3, type code %A, sha256 dec06e9f8d832c22…

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

CeY-08Guo.tdb: HCP_A3, type code %A, sha256 6052d6790f767fad…

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

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2006.02.002 F.G. Meng, L.B. Liu, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Ce–Y system, Calphad 30, 323-325 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/j.ssi.2008.06.011 D DJUROVIC, M ZINKEVICH, F ALDINGER, Thermodynamic modeling of the cerium–yttrium–oxygen system, Solid State Ionics 179, 1902-1911 (2008).
assessment that models this phase; reports values for this phase
doi:10.3139/146.101685 Cuiping Guo, Zhenmin Du, Changrong Li, Thermodynamic description of the Ce-Mg-Y and Mg-Nd-Y systems, International Journal of Materials Research 99, 650-688 (2008).
assessment that models this phase
doi:10.1007/s11661-997-0129-z H. Flandorfer, M. Giovannini, A. Saccone, R. Rogi, R. Ferro, The Ce-Mg-Y system, Metall Mater Trans A 28, 265-276 (1997).
cited as the source of values for this phase

LIQUID (Ce–Y)

Id: phase:ce-y:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 1060.35–2500 K, x(Y) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ce-y:liquid
tdb: tdb:CeY-06Men.tdb:LIQUID, tdb:CeY-08Dju.tdb:LIQUID, tdb:CeY-08Guo.tdb:LIQUID

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

CeY-06Men.tdb: LIQUID, type code %, sha256 1ae8c2335e970ff1…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : CE Y : !

CeY-08Dju.tdb: LIQUID, type code %, sha256 dec06e9f8d832c22…

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

CeY-08Guo.tdb: LIQUID, type code %, sha256 6052d6790f767fad…

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

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2006.02.002 F.G. Meng, L.B. Liu, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Ce–Y system, Calphad 30, 323-325 (2006).
assessment that models this phase
doi:10.1016/j.ssi.2008.06.011 D DJUROVIC, M ZINKEVICH, F ALDINGER, Thermodynamic modeling of the cerium–yttrium–oxygen system, Solid State Ionics 179, 1902-1911 (2008).
assessment that models this phase
doi:10.3139/146.101685 Cuiping Guo, Zhenmin Du, Changrong Li, Thermodynamic description of the Ce-Mg-Y and Mg-Nd-Y systems, International Journal of Materials Research 99, 650-688 (2008).
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}
}