Ag–Ce phases

8 phases (tier A 3, tier C 1, liquid 1, needs_review 3); 7 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 · Ag–Ce system page · Markdown · field reference

Phases of the Ag–Ce system (8)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
AG2CE phase:ag-ce:ag2ce		needs_review	stable in 1 of 1 calculated diagram(s): 300–1121.34 K, x(Ce) 0.33333–0.33333	8	1
AG4CE phase:ag-ce:ag4ce		needs_review	stable in 1 of 1 calculated diagram(s): 300–1088.97 K, x(Ce) 0.2–0.2	8	1
AG51CE14 phase:ag-ce:ag51ce14	Ag51Gd14 · hP68 · P6/m (175)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1306.47 K, x(Ce) 0.21538–0.21538	12	1
AGCE phase:ag-ce:agce		needs_review	stable in 1 of 1 calculated diagram(s): 300–1123.3 K, x(Ce) 0.5–0.5	11	1
BCC_A2 phase:ag-ce:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 891.81–2499.5 K, x(Ce) 0.95478–1	3	1
FCC_A1 phase:ag-ce:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1259.48 K, x(Ce) 0–1	10	1
HCP_A3 phase:ag-ce:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
LIQUID phase:ag-ce:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 788.95–2500 K, x(Ce) 0–1	30	1

AG2CE (Ag–Ce)

Id: phase:ag-ce:ag2ce; status needs_review
No structure assigned. Why: dft_space_group_74_matches_2_structure_types; no_structure_token
Candidate (dft_mp): Imma (74) — on-hull MP CeAg2 at x(CE)=0.3333
Candidate (dft_oqmd): Imma (74) — on-hull OQMD Ag2 Ce1 at x(CE)=0.3333
Candidate (dft_space_group_and_stoichiometry): CeCu2 · oI12 · Imma (74) — space group 74 and stoichiometry match
Candidate (dft_space_group_and_stoichiometry): Hg2K · oI12 · Imma (74) — space group 74 and stoichiometry match
Candidate (sgte_mmc2): Hg2K · oI12 · Imma (74) — Hallstedt 2025 mmc2 row for AG2CE: Ag2Ce-alpha
Candidate (tdb_comment): Hg2K · oI12 · Imma — AgCe-02Yin-LB.tdb: 'Prototype Hg2K (oI12, Imma), alpha'
Stoichiometry: Ag 0.6667, Ce 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1121.34 K, x(Ce) 0.33333–0.33333
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-ce:ag2ce
paper: paper:10.1016/s0925-8388(01)01757-1:Ag2Ce
tdb: tdb:AgCe-02Yin-LB.tdb:AG2CE

TDB models of AG2CE (1): PHASE and CONSTITUENT statements as written

AgCe-02Yin-LB.tdb: AG2CE, type code %, sha256 f1251075646ab97a…

52: PHASE AG2CE % 2 2 1 !
53: CONST AG2CE : AG : CE : !

Example references (4 of 4; assessments first):

doi:10.1016/S0925-8388(01)01757-1 F. Yin, M. Huang, X. Su, P. Zhang, Z. Li, Y. Shi, J. Alloys Compd., 334, 154-58(2002).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(83)90239-4 Isolde Stapf, Hermann Jehn, The Ag-Ce phase diagram I: Ag-Ag3Ce partial phase diagram, Journal of the Less Common Metals 92, 167-175 (1983).
cited as the source of values for this phase
doi:10.1016/0022-5088(75)90093-4 S. Delfino, R. Ferro, R. Capelli, A. Borsese, Phase equilibria in the silver-cerium system, Journal of the Less Common Metals 41, 59-64 (1975).
cited as the source of values for this phase
doi:10.1016/0022-5088(80)90028-4 Th. Heumann, A. Préval, The equilibrium diagram of the system Ag-50at.%Ce, Journal of the Less Common Metals 76, 263-270 (1980).
cited as the source of values for this phase

AG4CE (Ag–Ce)

Id: phase:ag-ce:ag4ce; status needs_review
No structure assigned. Why: no_on_hull_entry_in_mp; no_structure_token; sgte_mmc2_row_incomplete
Candidate (dft_oqmd): P-1 (2) — on-hull OQMD Ag4 Ce1 at x(CE)=0.2000
Candidate (literature_printed): (Ag4Ce) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Ag4Ce) — Hallstedt 2025 mmc2 row for AG4CE: Ag4Ce
Stoichiometry: Ag 0.8000, Ce 0.2000
Stability: stable in 1 of 1 calculated diagram(s): 300–1088.97 K, x(Ce) 0.2–0.2
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-ce:ag4ce
paper: paper:10.1016/s0925-8388(01)01757-1:Ag4Ce
tdb: tdb:AgCe-02Yin-LB.tdb:AG4CE

TDB models of AG4CE (1): PHASE and CONSTITUENT statements as written

AgCe-02Yin-LB.tdb: AG4CE, type code %, sha256 f1251075646ab97a…

41: PHASE AG4CE % 2 4 1 !
42: CONST AG4CE : AG : CE : !

Example references (4 of 4; assessments first):

doi:10.1016/S0925-8388(01)01757-1 F. Yin, M. Huang, X. Su, P. Zhang, Z. Li, Y. Shi, J. Alloys Compd., 334, 154-58(2002).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(83)90239-4 Isolde Stapf, Hermann Jehn, The Ag-Ce phase diagram I: Ag-Ag3Ce partial phase diagram, Journal of the Less Common Metals 92, 167-175 (1983).
cited as the source of values for this phase
doi:10.1016/0022-5088(75)90093-4 S. Delfino, R. Ferro, R. Capelli, A. Borsese, Phase equilibria in the silver-cerium system, Journal of the Less Common Metals 41, 59-64 (1975).
cited as the source of values for this phase
doi:10.1016/0022-5088(80)90028-4 Th. Heumann, A. Préval, The equilibrium diagram of the system Ag-50at.%Ce, Journal of the Less Common Metals 76, 263-270 (1980).
cited as the source of values for this phase

AG51CE14 (Ag–Ce)

Id: phase:ag-ce:ag51ce14; status assigned
Structure: Ag51Gd14 · hP68 · P6/m (175); type st:ag51gd14-hp68; 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
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: Ag 0.7846, Ce 0.2154
Stability: stable in 1 of 1 calculated diagram(s): 300–1306.47 K, x(Ce) 0.21538–0.21538
Literature: 12 values (12 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-ce:ag51ce14
paper: paper:10.1016/s0925-8388(01)01757-1:Ag51Ce14
tdb: tdb:AgCe-02Yin-LB.tdb:AG51CE14

TDB models of AG51CE14 (1): PHASE and CONSTITUENT statements as written

AgCe-02Yin-LB.tdb: AG51CE14, type code %, sha256 f1251075646ab97a…

46: PHASE AG51CE14 % 2 51 14 !
47: CONST AG51CE14 : AG : CE : !

Example references (4 of 4; assessments first):

doi:10.1016/S0925-8388(01)01757-1 F. Yin, M. Huang, X. Su, P. Zhang, Z. Li, Y. Shi, J. Alloys Compd., 334, 154-58(2002).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(83)90239-4 Isolde Stapf, Hermann Jehn, The Ag-Ce phase diagram I: Ag-Ag3Ce partial phase diagram, Journal of the Less Common Metals 92, 167-175 (1983).
cited as the source of values for this phase
doi:10.1016/0022-5088(75)90093-4 S. Delfino, R. Ferro, R. Capelli, A. Borsese, Phase equilibria in the silver-cerium system, Journal of the Less Common Metals 41, 59-64 (1975).
cited as the source of values for this phase
doi:10.1016/0022-5088(80)90028-4 Th. Heumann, A. Préval, The equilibrium diagram of the system Ag-50at.%Ce, Journal of the Less Common Metals 76, 263-270 (1980).
cited as the source of values for this phase

AGCE (Ag–Ce)

Id: phase:ag-ce:agce; status needs_review
No structure assigned. Why: no_on_hull_entry_in_mp; no_structure_token
Candidate (dft_oqmd): Pm-3m (221) — on-hull OQMD Ag1 Ce1 at x(CE)=0.5000
Candidate (sgte_mmc2): CsCl · B2 · cP2 · Pm-3m (221) — Hallstedt 2025 mmc2 row for AGCE: AgCe-alpha
Candidate (tdb_comment): CsCl · cP2 · Pm-3m — AgCe-02Yin-LB.tdb: 'Prototype CsCl (cP2, Pm-3m), alpha'
Stoichiometry: Ag 0.5000, Ce 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–1123.3 K, x(Ce) 0.5–0.5
Literature: 11 values (11 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-ce:agce
paper: paper:10.1016/s0925-8388(01)01757-1:AgCe
tdb: tdb:AgCe-02Yin-LB.tdb:AGCE

TDB models of AGCE (1): PHASE and CONSTITUENT statements as written

AgCe-02Yin-LB.tdb: AGCE, type code %, sha256 f1251075646ab97a…

58: PHASE AGCE % 2 1 1 !
59: CONST AGCE : AG : CE : !

Example references (4 of 4; assessments first):

doi:10.1016/S0925-8388(01)01757-1 F. Yin, M. Huang, X. Su, P. Zhang, Z. Li, Y. Shi, J. Alloys Compd., 334, 154-58(2002).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(83)90239-4 Isolde Stapf, Hermann Jehn, The Ag-Ce phase diagram I: Ag-Ag3Ce partial phase diagram, Journal of the Less Common Metals 92, 167-175 (1983).
cited as the source of values for this phase
doi:10.1016/0022-5088(75)90093-4 S. Delfino, R. Ferro, R. Capelli, A. Borsese, Phase equilibria in the silver-cerium system, Journal of the Less Common Metals 41, 59-64 (1975).
cited as the source of values for this phase
doi:10.1016/0022-5088(80)90028-4 Th. Heumann, A. Préval, The equilibrium diagram of the system Ag-50at.%Ce, Journal of the Less Common Metals 76, 263-270 (1980).
cited as the source of values for this phase

BCC_A2 (Ag–Ce)

Id: phase:ag-ce: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 1 of 1 calculated diagram(s): 891.81–2499.5 K, x(Ce) 0.95478–1
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-ce:bcc-a2
paper: paper:10.1016/s0925-8388(01)01757-1:δ-Ce
tdb: tdb:AgCe-02Yin-LB.tdb:BCC_A2

TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written

AgCe-02Yin-LB.tdb: BCC_A2, type code %B, sha256 f1251075646ab97a…

31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : AG CE : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/S0925-8388(01)01757-1 F. Yin, M. Huang, X. Su, P. Zhang, Z. Li, Y. Shi, J. Alloys Compd., 334, 154-58(2002).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(83)90239-4 Isolde Stapf, Hermann Jehn, The Ag-Ce phase diagram I: Ag-Ag3Ce partial phase diagram, Journal of the Less Common Metals 92, 167-175 (1983).
cited as the source of values for this phase
doi:10.1016/0022-5088(75)90093-4 S. Delfino, R. Ferro, R. Capelli, A. Borsese, Phase equilibria in the silver-cerium system, Journal of the Less Common Metals 41, 59-64 (1975).
cited as the source of values for this phase

FCC_A1 (Ag–Ce)

Id: phase:ag-ce: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 1 of 1 calculated diagram(s): 300–1259.48 K, x(Ce) 0–1
Literature: 10 values (10 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ag-ce:fcc-a1
paper: paper:10.1016/s0925-8388(01)01757-1:Ag, paper:10.1016/s0925-8388(01)01757-1:γ-Ce
tdb: tdb:AgCe-02Yin-LB.tdb:FCC_A1

TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written

AgCe-02Yin-LB.tdb: FCC_A1, type code %A, sha256 f1251075646ab97a…

26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : AG% CE% : VA : !

Example references (4 of 4; assessments first):

doi:10.1016/S0925-8388(01)01757-1 F. Yin, M. Huang, X. Su, P. Zhang, Z. Li, Y. Shi, J. Alloys Compd., 334, 154-58(2002).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(83)90239-4 Isolde Stapf, Hermann Jehn, The Ag-Ce phase diagram I: Ag-Ag3Ce partial phase diagram, Journal of the Less Common Metals 92, 167-175 (1983).
cited as the source of values for this phase
doi:10.1016/0022-5088(75)90093-4 S. Delfino, R. Ferro, R. Capelli, A. Borsese, Phase equilibria in the silver-cerium system, Journal of the Less Common Metals 41, 59-64 (1975).
cited as the source of values for this phase
doi:10.1016/0022-5088(80)90028-4 Th. Heumann, A. Préval, The equilibrium diagram of the system Ag-50at.%Ce, Journal of the Less Common Metals 76, 263-270 (1980).
cited as the source of values for this phase

HCP_A3 (Ag–Ce)

Id: phase:ag-ce: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 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ag-ce:hcp-a3
tdb: tdb:AgCe-02Yin-LB.tdb:HCP_A3

TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written

AgCe-02Yin-LB.tdb: HCP_A3, type code %A, sha256 f1251075646ab97a…

36: PHASE HCP_A3 %A 2 1 0.5 !
37: CONST HCP_A3 : AG CE : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/S0925-8388(01)01757-1 F. Yin, M. Huang, X. Su, P. Zhang, Z. Li, Y. Shi, J. Alloys Compd., 334, 154-58(2002).
assessment that models this phase

LIQUID (Ag–Ce)

Id: phase:ag-ce:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 788.95–2500 K, x(Ce) 0–1
Literature: 30 values (30 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-ce:liquid
paper: paper:10.1016/s0925-8388(01)01757-1:L
tdb: tdb:AgCe-02Yin-LB.tdb:LIQUID

TDB models of LIQUID (1): PHASE and CONSTITUENT statements as written

AgCe-02Yin-LB.tdb: LIQUID, type code %, sha256 f1251075646ab97a…

21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : AG CE : !

Example references (4 of 4; assessments first):

doi:10.1016/S0925-8388(01)01757-1 F. Yin, M. Huang, X. Su, P. Zhang, Z. Li, Y. Shi, J. Alloys Compd., 334, 154-58(2002).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(83)90239-4 Isolde Stapf, Hermann Jehn, The Ag-Ce phase diagram I: Ag-Ag3Ce partial phase diagram, Journal of the Less Common Metals 92, 167-175 (1983).
cited as the source of values for this phase
doi:10.1016/0022-5088(75)90093-4 S. Delfino, R. Ferro, R. Capelli, A. Borsese, Phase equilibria in the silver-cerium system, Journal of the Less Common Metals 41, 59-64 (1975).
cited as the source of values for this phase
doi:10.1016/0022-5088(80)90028-4 Th. Heumann, A. Préval, The equilibrium diagram of the system Ag-50at.%Ce, Journal of the Less Common Metals 76, 263-270 (1980).
cited as the source of values for 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}
}