# Ce–Pt phases

> Ce–Pt system: 13 phases (tier A 7, tier C 4, liquid 1, needs_review 1); 12 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/CE-PT.html · Markdown: https://data.orchid-project.org/phases/pages/CE-PT.md

13 phases (tier A 7, tier C 4, liquid 1, needs_review 1); 12 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=CE-PT) · [full JSON](https://data.orchid-project.org/phases/systems/CE-PT.json) · [Ce–Pt system page](https://data.orchid-project.org/systems/CE-PT.html) · [Markdown](https://data.orchid-project.org/phases/pages/CE-PT.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Ce–Pt system (13)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-ce-pt-bcc-a2); _phase:ce-pt:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 987.06–1072 K, x(Pt) 0–0.01128 | 2 | 1 |
| [CE18PT82](#phase-ce-pt-ce18pt82); _phase:ce-pt:ce18pt82_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–1999.87 K, x(Pt) 0.82–0.82 | 0 | 1 |
| [CE3PT2](#phase-ce-pt-ce3pt2); _phase:ce-pt:ce3pt2_ | Er3Ni2 · hR15 · R-3 (148) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1285.72 K, x(Pt) 0.4–0.4 | 5 | 1 |
| [CE3PT4](#phase-ce-pt-ce3pt4); _phase:ce-pt:ce3pt4_ | Pd4Pu3 · hR14 · R-3 (148) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1632.5 K, x(Pt) 0.57143–0.57143 | 4 | 1 |
| [CE5PT3](#phase-ce-pt-ce5pt3); _phase:ce-pt:ce5pt3_ | Pu5Rh3 · tP32 · P4/ncc (130) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1209.16 K, x(Pt) 0.37378–0.38497 | 4 | 1 |
| [CE5PT4](#phase-ce-pt-ce5pt4); _phase:ce-pt:ce5pt4_ | Ge4Sm5 · oP36 · Pnma (62) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 1085.71–1346.48 K, x(Pt) 0.44444–0.44444 | 5 | 1 |
| [CE7PT3_D102](#phase-ce-pt-ce7pt3-d102); _phase:ce-pt:ce7pt3-d102_ | Fe3Th7 · D10_2 · hP20 · P6_3mc (186) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1134.46 K, x(Pt) 0.3–0.3 | 4 | 1 |
| [CEPT_B33](#phase-ce-pt-cept-b33); _phase:ce-pt:cept-b33_ | CrB · B33 · oC8 · Cmcm (63) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1790 K, x(Pt) 0.5–0.5 | 7 | 1 |
| [CEPT2_C15](#phase-ce-pt-cept2-c15); _phase:ce-pt:cept2-c15_ | Cu2Mg · C15 · cF24 · Fd-3m (227) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–2024.21 K, x(Pt) 0.6643–0.75166 | 6 | 1 |
| [CEPT5_D2D](#phase-ce-pt-cept5-d2d); _phase:ce-pt:cept5-d2d_ | CaCu5 · D2_d · hP6 · P6/mmm (191) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–2044.4 K, x(Pt) 0.83333–0.83333 | 6 | 1 |
| [FCC_A1](#phase-ce-pt-fcc-a1); _phase:ce-pt:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–2499.94 K, x(Pt) 0–1 | 6 | 1 |
| [HCP_A3](#phase-ce-pt-hcp-a3); _phase:ce-pt: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-ce-pt-liquid); _phase:ce-pt:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 922.09–2500 K, x(Pt) 0–1 | 28 | 1 |

## BCC_A2 (Ce–Pt)

- Id: `phase:ce-pt: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): 987.06–1072 K, x(Pt) 0–0.01128
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:bcc-a2)

Names (3): _corpus: _corpus:phase:ce-pt:bcc-a2  
_paper: _paper:10.1016/j.calphad.2011.09.006:(δCe)  
_tdb: _tdb:CePt-11Liu.tdb:BCC_A2  


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

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): BCC_A2, type code %B, sha256 `e48916b0e1d3bc2a…`

~~~~text
38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : CE% PT : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.intermet.2010.07.012](https://doi.org/10.1016/j.intermet.2010.07.012) A. Janghorban, M. Lomello-Tafin, J.M. Moreau, Ph. Galez, The phase diagram of the Ce–Pt system, Intermetallics 18, 2208-2218 (2010).  
_cited as the source of values for this phase_

## CE18PT82 (Ce–Pt)

- Id: `phase:ce-pt:ce18pt82`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (sgte_mmc2): (Ce18Pt82) — Hallstedt 2025 mmc2 row for CE18PT82: Ce18Pt82
- Stoichiometry: Ce 0.1800, Pt 0.8200
- Stability: stable in 1 of 1 calculated diagram(s): 300–1999.87 K, x(Pt) 0.82–0.82
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:ce18pt82)

Names (2): _corpus: _corpus:phase:ce-pt:ce18pt82  
_tdb: _tdb:CePt-11Liu.tdb:CE18PT82  


### TDB models of CE18PT82 (1): PHASE and CONSTITUENT statements as written

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): CE18PT82, type code %, sha256 `e48916b0e1d3bc2a…`

~~~~text
83: PHASE CE18PT82 % 2 0.18 0.82 !
84: CONST CE18PT82 : CE : PT : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase_

## CE3PT2 (Ce–Pt)

- Id: `phase:ce-pt:ce3pt2`; status `assigned`
- Structure: Er3Ni2 · hR15 · R-3 (148); type `st:er3ni2-hr15`; 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 (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Ce 0.6000, Pt 0.4000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1285.72 K, x(Pt) 0.4–0.4
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:ce3pt2)

Names (3): _corpus: _corpus:phase:ce-pt:ce3pt2  
_paper: _paper:10.1016/j.calphad.2011.09.006:Ce3Pt2  
_tdb: _tdb:CePt-11Liu.tdb:CE3PT2  


### TDB models of CE3PT2 (1): PHASE and CONSTITUENT statements as written

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): CE3PT2, type code %, sha256 `e48916b0e1d3bc2a…`

~~~~text
58: PHASE CE3PT2 % 2 3 2 !
59: CONST CE3PT2 : CE : PT : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.intermet.2010.07.012](https://doi.org/10.1016/j.intermet.2010.07.012) A. Janghorban, M. Lomello-Tafin, J.M. Moreau, Ph. Galez, The phase diagram of the Ce–Pt system, Intermetallics 18, 2208-2218 (2010).  
_cited as the source of values for this phase_

## CE3PT4 (Ce–Pt)

- Id: `phase:ce-pt:ce3pt4`; status `assigned`
- Structure: Pd4Pu3 · hR14 · R-3 (148); type `st:pd4pu3-hr14`; 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 (no_on_hull_entry_in_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Ce 0.4286, Pt 0.5714
- Stability: stable in 1 of 1 calculated diagram(s): 300–1632.5 K, x(Pt) 0.57143–0.57143
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:ce3pt4)

Names (3): _corpus: _corpus:phase:ce-pt:ce3pt4  
_paper: _paper:10.1016/j.calphad.2011.09.006:Ce3Pt4  
_tdb: _tdb:CePt-11Liu.tdb:CE3PT4  


### TDB models of CE3PT4 (1): PHASE and CONSTITUENT statements as written

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): CE3PT4, type code %, sha256 `e48916b0e1d3bc2a…`

~~~~text
73: PHASE CE3PT4 % 2 3 4 !
74: CONST CE3PT4 : CE : PT : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.intermet.2010.07.012](https://doi.org/10.1016/j.intermet.2010.07.012) A. Janghorban, M. Lomello-Tafin, J.M. Moreau, Ph. Galez, The phase diagram of the Ce–Pt system, Intermetallics 18, 2208-2218 (2010).  
_cited as the source of values for this phase_

## CE5PT3 (Ce–Pt)

- Id: `phase:ce-pt:ce5pt3`; status `assigned`
- Structure: Pu5Rh3 · tP32 · P4/ncc (130); type `st:pu5rh3-tp32`; 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 (no_structure_token, off_stoichiometric_model); structure as stated in the SGTE crystallographic table for this phase name and system
- Stability: stable in 1 of 1 calculated diagram(s): 300–1209.16 K, x(Pt) 0.37378–0.38497
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:ce5pt3)

Names (3): _corpus: _corpus:phase:ce-pt:ce5pt3  
_paper: _paper:10.1016/j.calphad.2011.09.006:Ce5Pt3  
_tdb: _tdb:CePt-11Liu.tdb:CE5PT3  


### TDB models of CE5PT3 (1): PHASE and CONSTITUENT statements as written

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): CE5PT3, type code %, sha256 `e48916b0e1d3bc2a…`

~~~~text
53: PHASE CE5PT3 % 2 0.615 0.385 !
54: CONST CE5PT3 : CE% PT : CE PT% : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.intermet.2010.07.012](https://doi.org/10.1016/j.intermet.2010.07.012) A. Janghorban, M. Lomello-Tafin, J.M. Moreau, Ph. Galez, The phase diagram of the Ce–Pt system, Intermetallics 18, 2208-2218 (2010).  
_cited as the source of values for this phase_

## CE5PT4 (Ce–Pt)

- Id: `phase:ce-pt:ce5pt4`; status `assigned`
- Structure: Ge4Sm5 · oP36 · Pnma (62); type `st:ge4sm5-op36`; 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 (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Ce 0.5556, Pt 0.4444
- Stability: stable in 1 of 1 calculated diagram(s): 1085.71–1346.48 K, x(Pt) 0.44444–0.44444
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:ce5pt4)

Names (3): _corpus: _corpus:phase:ce-pt:ce5pt4  
_paper: _paper:10.1016/j.calphad.2011.09.006:Ce5Pt4  
_tdb: _tdb:CePt-11Liu.tdb:CE5PT4  


### TDB models of CE5PT4 (1): PHASE and CONSTITUENT statements as written

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): CE5PT4, type code %, sha256 `e48916b0e1d3bc2a…`

~~~~text
63: PHASE CE5PT4 % 2 5 4 !
64: CONST CE5PT4 : CE : PT : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.intermet.2010.07.012](https://doi.org/10.1016/j.intermet.2010.07.012) A. Janghorban, M. Lomello-Tafin, J.M. Moreau, Ph. Galez, The phase diagram of the Ce–Pt system, Intermetallics 18, 2208-2218 (2010).  
_cited as the source of values for this phase_

## CE7PT3_D102 (Ce–Pt)

- Id: `phase:ce-pt:ce7pt3-d102`; status `assigned`
- Structure: Fe3Th7 · D10_2 · hP20 · P6_3mc (186); type `st:d10-2-fe3th7-hp20`; tier A: standard phase name; confidence high
- Stoichiometry: Ce 0.7000, Pt 0.3000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1134.46 K, x(Pt) 0.3–0.3
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:ce7pt3-d102)

Names (3): _corpus: _corpus:phase:ce-pt:ce7pt3-d102  
_paper: _paper:10.1016/j.calphad.2011.09.006:Ce7Pt3  
_tdb: _tdb:CePt-11Liu.tdb:CE7PT3_D102  


### TDB models of CE7PT3_D102 (1): PHASE and CONSTITUENT statements as written

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): CE7PT3_D102, type code %, sha256 `e48916b0e1d3bc2a…`

~~~~text
48: PHASE CE7PT3_D102 % 2 7 3 !
49: CONST CE7PT3_D102 : CE : PT : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.intermet.2010.07.012](https://doi.org/10.1016/j.intermet.2010.07.012) A. Janghorban, M. Lomello-Tafin, J.M. Moreau, Ph. Galez, The phase diagram of the Ce–Pt system, Intermetallics 18, 2208-2218 (2010).  
_cited as the source of values for this phase_

## CEPT_B33 (Ce–Pt)

- Id: `phase:ce-pt:cept-b33`; status `assigned`
- Structure: CrB · B33 · oC8 · Cmcm (63); type `st:b33-crb-oc8`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaabfld and oqmd-18268, space group 63
- Stoichiometry: Ce 0.5000, Pt 0.5000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1790 K, x(Pt) 0.5–0.5
- Literature: 7 values (7 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:cept-b33)

Names (5): _corpus: _corpus:phase:ce-pt:cept-b33  
_mp: _mp:mp-aaaabfld  
_oqmd: _oqmd:oqmd-18268  
_paper: _paper:10.1016/j.calphad.2011.09.006:CePt  
_tdb: _tdb:CePt-11Liu.tdb:CEPT_B33  


### TDB models of CEPT_B33 (1): PHASE and CONSTITUENT statements as written

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): CEPT_B33, type code %, sha256 `e48916b0e1d3bc2a…`

~~~~text
68: PHASE CEPT_B33 % 2 1 1 !
69: CONST CEPT_B33 : CE : PT : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.intermet.2010.07.012](https://doi.org/10.1016/j.intermet.2010.07.012) A. Janghorban, M. Lomello-Tafin, J.M. Moreau, Ph. Galez, The phase diagram of the Ce–Pt system, Intermetallics 18, 2208-2218 (2010).  
_cited as the source of values for this phase_

## CEPT2_C15 (Ce–Pt)

- Id: `phase:ce-pt:cept2-c15`; status `assigned`
- Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type `st:c15-cu2mg-cf24`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in CePt-11Liu.tdb also describes the disordered state
- Stability: stable in 1 of 1 calculated diagram(s): 300–2024.21 K, x(Pt) 0.6643–0.75166
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:cept2-c15)

Names (3): _corpus: _corpus:phase:ce-pt:cept2-c15  
_paper: _paper:10.1016/j.calphad.2011.09.006:CePt2  
_tdb: _tdb:CePt-11Liu.tdb:CEPT2_C15  


### TDB models of CEPT2_C15 (1): PHASE and CONSTITUENT statements as written

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): CEPT2_C15, type code %, sha256 `e48916b0e1d3bc2a…`

~~~~text
78: PHASE CEPT2_C15 % 2 0.325 0.675 !
79: CONST CEPT2_C15 : CE% PT : CE PT% : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.intermet.2010.07.012](https://doi.org/10.1016/j.intermet.2010.07.012) A. Janghorban, M. Lomello-Tafin, J.M. Moreau, Ph. Galez, The phase diagram of the Ce–Pt system, Intermetallics 18, 2208-2218 (2010).  
_cited as the source of values for this phase_

## CEPT5_D2D (Ce–Pt)

- Id: `phase:ce-pt:cept5-d2d`; status `assigned`
- Structure: CaCu5 · D2_d · hP6 · P6/mmm (191); type `st:d2-d-cacu5-hp6`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaabewyb and oqmd-19395, space group 191
- Stoichiometry: Ce 0.1667, Pt 0.8333
- Stability: stable in 1 of 1 calculated diagram(s): 300–2044.4 K, x(Pt) 0.83333–0.83333
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:cept5-d2d)

Names (5): _corpus: _corpus:phase:ce-pt:cept5-d2d  
_mp: _mp:mp-aaabewyb  
_oqmd: _oqmd:oqmd-19395  
_paper: _paper:10.1016/j.calphad.2011.09.006:CePt5  
_tdb: _tdb:CePt-11Liu.tdb:CEPT5_D2D  


### TDB models of CEPT5_D2D (1): PHASE and CONSTITUENT statements as written

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): CEPT5_D2D, type code %, sha256 `e48916b0e1d3bc2a…`

~~~~text
88: PHASE CEPT5_D2D % 2 1 5 !
89: CONST CEPT5_D2D : CE : PT : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.intermet.2010.07.012](https://doi.org/10.1016/j.intermet.2010.07.012) A. Janghorban, M. Lomello-Tafin, J.M. Moreau, Ph. Galez, The phase diagram of the Ce–Pt system, Intermetallics 18, 2208-2218 (2010).  
_cited as the source of values for this phase_

## FCC_A1 (Ce–Pt)

- Id: `phase:ce-pt: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): 300–2499.94 K, x(Pt) 0–1
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:fcc-a1)

Names (4): _corpus: _corpus:phase:ce-pt:fcc-a1  
_paper: _paper:10.1016/j.calphad.2011.09.006:(Pt), paper:10.1016/j.calphad.2011.09.006:(γCe)  
_tdb: _tdb:CePt-11Liu.tdb:FCC_A1  


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

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): FCC_A1, type code %A, sha256 `e48916b0e1d3bc2a…`

~~~~text
33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : CE% PT% : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.intermet.2010.07.012](https://doi.org/10.1016/j.intermet.2010.07.012) A. Janghorban, M. Lomello-Tafin, J.M. Moreau, Ph. Galez, The phase diagram of the Ce–Pt system, Intermetallics 18, 2208-2218 (2010).  
_cited as the source of values for this phase_

## HCP_A3 (Ce–Pt)

- Id: `phase:ce-pt: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](https://orchid-project.org/phases/#phase:ce-pt:hcp-a3)

Names (2): _corpus: _corpus:phase:ce-pt:hcp-a3  
_tdb: _tdb:CePt-11Liu.tdb:HCP_A3  


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

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): HCP_A3, type code %A, sha256 `e48916b0e1d3bc2a…`

~~~~text
43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : CE PT : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase_

## LIQUID (Ce–Pt)

- Id: `phase:ce-pt:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 922.09–2500 K, x(Pt) 0–1
- Literature: 28 values (28 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-pt:liquid)

Names (3): _corpus: _corpus:phase:ce-pt:liquid  
_paper: _paper:10.1016/j.calphad.2011.09.006:L  
_tdb: _tdb:CePt-11Liu.tdb:LIQUID  


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

[CePt-11Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/CePt-11Liu.tdb): LIQUID, type code %, sha256 `e48916b0e1d3bc2a…`

~~~~text
28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : CE PT : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2011.09.006](https://doi.org/10.1016/j.calphad.2011.09.006) X.J. Liu, S.X. Gan, Z.S. Li, Y. Yu, C.P. Wang, Thermodynamic assessment of the Ce–Pt system, Calphad 35, 551-555 (2011).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.intermet.2010.07.012](https://doi.org/10.1016/j.intermet.2010.07.012) A. Janghorban, M. Lomello-Tafin, J.M. Moreau, Ph. Galez, The phase diagram of the Ce–Pt system, Intermetallics 18, 2208-2218 (2010).  
_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). 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).