# Ce–Sb phases

> Ce–Sb system: 12 phases (tier A 7, tier C 2, liquid 1, needs_review 2); 10 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-SB.html · Markdown: https://data.orchid-project.org/phases/pages/CE-SB.md

12 phases (tier A 7, tier C 2, liquid 1, needs_review 2); 10 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-SB) · [full JSON](https://data.orchid-project.org/phases/systems/CE-SB.json) · [Ce–Sb system page](https://data.orchid-project.org/systems/CE-SB.html) · [Markdown](https://data.orchid-project.org/phases/pages/CE-SB.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Ce–Sb system (12)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [RHOMBOHEDRAL_A7](#phase-ce-sb-a7-rhombohedral); _phase:ce-sb:a7-rhombohedral_ | alpha-As · A7 · hR2 · R-3m (166) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–904.24 K, x(Sb) 1–1 | 2 | 3 |
| [BCC_A2](#phase-ce-sb-bcc-a2); _phase:ce-sb:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 972.27–1077.35 K, x(Sb) 0–0.01639 | 4 | 3 |
| [CE2SB](#phase-ce-sb-ce2sb); _phase:ce-sb:ce2sb_ | La2Sb · tI12 · I4/mmm (139) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 3 of 3 calculated diagram(s): 300–1603.38 K, x(Sb) 0.33333–0.33333 | 6 | 3 |
| [CE4SB3_D73](#phase-ce-sb-ce4sb3-d73); _phase:ce-sb:ce4sb3-d73_ | Th3P4 · D7_3 · cI28 · I-43d (220) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1783.98 K, x(Sb) 0.42857–0.42857 | 4 | 3 |
| [CESB_B1](#phase-ce-sb-cesb-b1); _phase:ce-sb:cesb-b1_ | NaCl · B1 · cF8 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–2092.59 K, x(Sb) 0.5–0.5 | 6 | 3 |
| [CESB2](#phase-ce-sb-cesb2); _phase:ce-sb:cesb2_ | Sb2Sm · oC24 · Cmce (64) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1403.1 K, x(Sb) 0.66667–0.66667 | 5 | 1 |
| [CESB2_HT](#phase-ce-sb-cesb2-ht); _phase:ce-sb:cesb2-ht_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 1172.59–1406.78 K, x(Sb) 0.66667–0.66667 | 0 | 2 |
| [CESB2_LT](#phase-ce-sb-cesb2-lt); _phase:ce-sb:cesb2-lt_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 300–1172.94 K, x(Sb) 0.66667–0.66667 | 0 | 2 |
| [DHCP](#phase-ce-sb-dhcp-a3); _phase:ce-sb:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | not stable in 3 calculated diagram(s) | 0 | 3 |
| [FCC_A1](#phase-ce-sb-fcc-a1); _phase:ce-sb:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 3 of 3 calculated diagram(s): 300–1045 K, x(Sb) 0–0 | 2 | 3 |
| [HCP_A3](#phase-ce-sb-hcp-a3); _phase:ce-sb: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-sb-liquid); _phase:ce-sb:liquid_ | liquid | liquid | stable in 3 of 3 calculated diagram(s): 897.24–2500 K, x(Sb) 0–1 | 12 | 3 |

## RHOMBOHEDRAL_A7 (Ce–Sb)

- Id: `phase:ce-sb:a7-rhombohedral`; status `assigned`
- Structure: alpha-As · A7 · hR2 · R-3m (166); type `st:a7-alpha-as-hr2`; tier A: standard phase name; confidence high
- Stoichiometry: Sb 1.0000
- Stability: stable in 3 of 3 calculated diagram(s): 300–904.24 K, x(Sb) 1–1
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-sb:a7-rhombohedral)

Names (6): _corpus: _corpus:phase:ce-sb:a7-rhombohedral, corpus:phase:ce-sb:rhombohedral-a7  
_paper: _paper:10.1016/j.calphad.2006.06.003:(Sb)  
_tdb: _tdb:CeSb-06Su.tdb:RHOMBOHEDRAL_A7, tdb:CeSb-18Xu.tdb:RHOMBOHEDRAL_A7, tdb:CeSb-19Zhu.tdb:RHOMBOHEDRAL_A7  


### TDB models of RHOMBOHEDRAL_A7 (3): PHASE and CONSTITUENT statements as written

[CeSb-06Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-06Su.tdb): RHOMBOHEDRAL_A7, type code %, sha256 `f7003706d12f49da…`

~~~~text
48: PHASE RHOMBOHEDRAL_A7 % 1 1 !
49: CONST RHOMBOHEDRAL_A7 : SB : !
~~~~

[CeSb-18Xu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-18Xu.tdb): RHOMBOHEDRAL_A7, type code %, sha256 `cafccc1cc91064c7…`

~~~~text
49: PHASE RHOMBOHEDRAL_A7 % 1 1 !
50: CONST RHOMBOHEDRAL_A7 : SB : !
~~~~

[CeSb-19Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-19Zhu.tdb): RHOMBOHEDRAL_A7, type code %, sha256 `6029aa66bde7b81e…`

~~~~text
49: PHASE RHOMBOHEDRAL_A7 % 1 1 !
50: CONST RHOMBOHEDRAL_A7 : SB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.calphad.2006.06.003](https://doi.org/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.2018.08.006](https://doi.org/10.1016/j.calphad.2018.08.006) C. Xu, C. Li, C. Guo, Z. Du, D. Zhu, C. Zhou, Calphad, 63, 24-36(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2018.11.009](https://doi.org/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_

## BCC_A2 (Ce–Sb)

- Id: `phase:ce-sb: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): 972.27–1077.35 K, x(Sb) 0–0.01639
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-sb:bcc-a2)

Names (5): _corpus: _corpus:phase:ce-sb:bcc-a2  
_paper: _paper:10.1016/j.calphad.2006.06.003:(δCe)  
_tdb: _tdb:CeSb-06Su.tdb:BCC_A2, tdb:CeSb-18Xu.tdb:BCC_A2, tdb:CeSb-19Zhu.tdb:BCC_A2  


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

[CeSb-06Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-06Su.tdb): BCC_A2, type code %B, sha256 `f7003706d12f49da…`

~~~~text
33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : CE% SB : VA : !
~~~~

[CeSb-18Xu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-18Xu.tdb): BCC_A2, type code %B, sha256 `cafccc1cc91064c7…`

~~~~text
34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : CE% SB : VA : !
~~~~

[CeSb-19Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-19Zhu.tdb): BCC_A2, type code %B, sha256 `6029aa66bde7b81e…`

~~~~text
34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : CE% SB : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.calphad.2006.06.003](https://doi.org/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.2018.08.006](https://doi.org/10.1016/j.calphad.2018.08.006) C. Xu, C. Li, C. Guo, Z. Du, D. Zhu, C. Zhou, Calphad, 63, 24-36(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2018.11.009](https://doi.org/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_

## CE2SB (Ce–Sb)

- Id: `phase:ce-sb:ce2sb`; status `assigned`
- Structure: La2Sb · tI12 · I4/mmm (139); type `st:la2sb-ti12`; 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 0.6667, Sb 0.3333
- Stability: stable in 3 of 3 calculated diagram(s): 300–1603.38 K, x(Sb) 0.33333–0.33333
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-sb:ce2sb)

Names (5): _corpus: _corpus:phase:ce-sb:ce2sb  
_paper: _paper:10.1016/j.calphad.2006.06.003:Ce2Sb  
_tdb: _tdb:CeSb-06Su.tdb:CE2SB, tdb:CeSb-18Xu.tdb:CE2SB, tdb:CeSb-19Zhu.tdb:CE2SB  


### TDB models of CE2SB (3): PHASE and CONSTITUENT statements as written

[CeSb-06Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-06Su.tdb): CE2SB, type code %, sha256 `f7003706d12f49da…`

~~~~text
53: PHASE CE2SB % 2 2 1 !
54: CONST CE2SB : CE : SB : !
~~~~

[CeSb-18Xu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-18Xu.tdb): CE2SB, type code %, sha256 `cafccc1cc91064c7…`

~~~~text
54: PHASE CE2SB % 2 2 1 !
55: CONST CE2SB : CE : SB : !
~~~~

[CeSb-19Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-19Zhu.tdb): CE2SB, type code %, sha256 `6029aa66bde7b81e…`

~~~~text
54: PHASE CE2SB % 2 2 1 !
55: CONST CE2SB : CE : SB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.calphad.2006.06.003](https://doi.org/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.2018.08.006](https://doi.org/10.1016/j.calphad.2018.08.006) C. Xu, C. Li, C. Guo, Z. Du, D. Zhu, C. Zhou, Calphad, 63, 24-36(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2018.11.009](https://doi.org/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_

## CE4SB3_D73 (Ce–Sb)

- Id: `phase:ce-sb:ce4sb3-d73`; status `assigned`
- Structure: Th3P4 · D7_3 · cI28 · I-43d (220); type `st:d7-3-th3p4-ci28`; tier A: standard phase name; confidence high
- Stoichiometry: Ce 0.5714, Sb 0.4286
- Stability: stable in 3 of 3 calculated diagram(s): 300–1783.98 K, x(Sb) 0.42857–0.42857
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-sb:ce4sb3-d73)

Names (5): _corpus: _corpus:phase:ce-sb:ce4sb3-d73  
_paper: _paper:10.1016/j.calphad.2006.06.003:Ce4Sb3  
_tdb: _tdb:CeSb-06Su.tdb:CE4SB3_D73, tdb:CeSb-18Xu.tdb:CE4SB3_D73, tdb:CeSb-19Zhu.tdb:CE4SB3_D73  


### TDB models of CE4SB3_D73 (3): PHASE and CONSTITUENT statements as written

[CeSb-06Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-06Su.tdb): CE4SB3_D73, type code %, sha256 `f7003706d12f49da…`

~~~~text
58: PHASE CE4SB3_D73 % 2 4 3 !
59: CONST CE4SB3_D73 : CE : SB : !
~~~~

[CeSb-18Xu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-18Xu.tdb): CE4SB3_D73, type code %, sha256 `cafccc1cc91064c7…`

~~~~text
59: PHASE CE4SB3_D73 % 2 4 3 !
60: CONST CE4SB3_D73 : CE : SB : !
~~~~

[CeSb-19Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-19Zhu.tdb): CE4SB3_D73, type code %, sha256 `6029aa66bde7b81e…`

~~~~text
59: PHASE CE4SB3_D73 % 2 4 3 !
60: CONST CE4SB3_D73 : CE : SB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.calphad.2006.06.003](https://doi.org/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.2018.08.006](https://doi.org/10.1016/j.calphad.2018.08.006) C. Xu, C. Li, C. Guo, Z. Du, D. Zhu, C. Zhou, Calphad, 63, 24-36(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2018.11.009](https://doi.org/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_

## CESB_B1 (Ce–Sb)

- Id: `phase:ce-sb:cesb-b1`; status `assigned`
- Structure: NaCl · B1 · cF8 · Fm-3m (225); type `st:b1-nacl-cf8`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaaaaox and oqmd-646834, space group 225
- Stoichiometry: Ce 0.5000, Sb 0.5000
- Stability: stable in 3 of 3 calculated diagram(s): 300–2092.59 K, x(Sb) 0.5–0.5
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-sb:cesb-b1)

Names (7): _corpus: _corpus:phase:ce-sb:cesb-b1  
_mp: _mp:mp-aaaaaaox  
_oqmd: _oqmd:oqmd-646834  
_paper: _paper:10.1016/j.calphad.2006.06.003:CeSb  
_tdb: _tdb:CeSb-06Su.tdb:CESB_B1, tdb:CeSb-18Xu.tdb:CESB_B1, tdb:CeSb-19Zhu.tdb:CESB_B1  


### TDB models of CESB_B1 (3): PHASE and CONSTITUENT statements as written

[CeSb-06Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-06Su.tdb): CESB_B1, type code %, sha256 `f7003706d12f49da…`

~~~~text
63: PHASE CESB_B1 % 2 1 1 !
64: CONST CESB_B1 : CE : SB : !
~~~~

[CeSb-18Xu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-18Xu.tdb): CESB_B1, type code %, sha256 `cafccc1cc91064c7…`

~~~~text
64: PHASE CESB_B1 % 2 1 1 !
65: CONST CESB_B1 : CE : SB : !
~~~~

[CeSb-19Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-19Zhu.tdb): CESB_B1, type code %, sha256 `6029aa66bde7b81e…`

~~~~text
64: PHASE CESB_B1 % 2 1 1 !
65: CONST CESB_B1 : CE : SB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.calphad.2006.06.003](https://doi.org/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.2018.08.006](https://doi.org/10.1016/j.calphad.2018.08.006) C. Xu, C. Li, C. Guo, Z. Du, D. Zhu, C. Zhou, Calphad, 63, 24-36(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2018.11.009](https://doi.org/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_

## CESB2 (Ce–Sb)

- Id: `phase:ce-sb:cesb2`; status `assigned`
- Structure: Sb2Sm · oC24 · Cmce (64); type `st:sb2sm-oc24`; 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, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Ce 0.3333, Sb 0.6667
- Stability: stable in 1 of 1 calculated diagram(s): 300–1403.1 K, x(Sb) 0.66667–0.66667
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-sb:cesb2)

Names (3): _corpus: _corpus:phase:ce-sb:cesb2  
_paper: _paper:10.1016/j.calphad.2006.06.003:CeSb2  
_tdb: _tdb:CeSb-06Su.tdb:CESB2  


### TDB models of CESB2 (1): PHASE and CONSTITUENT statements as written

[CeSb-06Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-06Su.tdb): CESB2, type code %, sha256 `f7003706d12f49da…`

~~~~text
68: PHASE CESB2 % 2 1 2 !
69: CONST CESB2 : CE : SB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.calphad.2006.06.003](https://doi.org/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_

## CESB2_HT (Ce–Sb)

- Id: `phase:ce-sb:cesb2-ht`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
- Candidate (dft_mp): Cmce (64) — on-hull MP CeSb2 at x(SB)=0.6667
- Candidate (dft_oqmd): Cmca (64) — on-hull OQMD Ce1 Sb2 at x(SB)=0.6667
- Candidate (sgte_mmc2): (CeSb2) — Hallstedt 2025 mmc2 row for CESB2_HT: CeSb2 (high T)
- Stoichiometry: Ce 0.3333, Sb 0.6667
- Stability: stable in 2 of 2 calculated diagram(s): 1172.59–1406.78 K, x(Sb) 0.66667–0.66667
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-sb:cesb2-ht)

Names (3): _corpus: _corpus:phase:ce-sb:cesb2-ht  
_tdb: _tdb:CeSb-18Xu.tdb:CESB2_HT, tdb:CeSb-19Zhu.tdb:CESB2_HT  


### TDB models of CESB2_HT (2): PHASE and CONSTITUENT statements as written

[CeSb-18Xu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-18Xu.tdb): CESB2_HT, type code %, sha256 `cafccc1cc91064c7…`

~~~~text
74: PHASE CESB2_HT % 2 1 2 !
75: CONST CESB2_HT : CE : SB : !
~~~~

[CeSb-19Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-19Zhu.tdb): CESB2_HT, type code %, sha256 `6029aa66bde7b81e…`

~~~~text
74: PHASE CESB2_HT % 2 1 2 !
75: CONST CESB2_HT : CE : SB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2018.08.006](https://doi.org/10.1016/j.calphad.2018.08.006) C. Xu, C. Li, C. Guo, Z. Du, D. Zhu, C. Zhou, Calphad, 63, 24-36(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2018.11.009](https://doi.org/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_

## CESB2_LT (Ce–Sb)

- Id: `phase:ce-sb:cesb2-lt`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition
- Candidate (dft_mp): Cmce (64) — on-hull MP CeSb2 at x(SB)=0.6667
- Candidate (dft_oqmd): Cmca (64) — on-hull OQMD Ce1 Sb2 at x(SB)=0.6667
- Candidate (tdb_comment): Sb2Sm · oC24 · Cmce — CeSb-18Xu.tdb: 'Prototype Sb2Sm (oC24, Cmce)'
- Candidate (tdb_comment): Sb2Sm · oC24 · Cmce — CeSb-19Zhu.tdb: 'Prototype Sb2Sm (oC24, Cmce)'
- Stoichiometry: Ce 0.3333, Sb 0.6667
- Stability: stable in 2 of 2 calculated diagram(s): 300–1172.94 K, x(Sb) 0.66667–0.66667
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-sb:cesb2-lt)

Names (3): _corpus: _corpus:phase:ce-sb:cesb2-lt  
_tdb: _tdb:CeSb-18Xu.tdb:CESB2_LT, tdb:CeSb-19Zhu.tdb:CESB2_LT  


### TDB models of CESB2_LT (2): PHASE and CONSTITUENT statements as written

[CeSb-18Xu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-18Xu.tdb): CESB2_LT, type code %, sha256 `cafccc1cc91064c7…`

~~~~text
69: PHASE CESB2_LT % 2 1 2 !
70: CONST CESB2_LT : CE : SB : !
~~~~

[CeSb-19Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-19Zhu.tdb): CESB2_LT, type code %, sha256 `6029aa66bde7b81e…`

~~~~text
69: PHASE CESB2_LT % 2 1 2 !
70: CONST CESB2_LT : CE : SB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.calphad.2018.08.006](https://doi.org/10.1016/j.calphad.2018.08.006) C. Xu, C. Li, C. Guo, Z. Du, D. Zhu, C. Zhou, Calphad, 63, 24-36(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2018.11.009](https://doi.org/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_

## DHCP (Ce–Sb)

- Id: `phase:ce-sb: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
- Stoichiometry: Ce 1.0000
- Stability: not stable in 3 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-sb:dhcp-a3)

Names (4): _corpus: _corpus:phase:ce-sb:dhcp-a3  
_tdb: _tdb:CeSb-06Su.tdb:DHCP, tdb:CeSb-18Xu.tdb:DHCP, tdb:CeSb-19Zhu.tdb:DHCP  


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

[CeSb-06Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-06Su.tdb): DHCP, type code %A, sha256 `f7003706d12f49da…`

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

[CeSb-18Xu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-18Xu.tdb): DHCP, type code %A, sha256 `cafccc1cc91064c7…`

~~~~text
44: PHASE DHCP %A 2 1 0.5 !
45: CONST DHCP : CE : VA : !
~~~~

[CeSb-19Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-19Zhu.tdb): DHCP, type code %A, sha256 `6029aa66bde7b81e…`

~~~~text
44: PHASE DHCP %A 2 1 0.5 !
45: CONST DHCP : CE : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.calphad.2006.06.003](https://doi.org/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.2018.08.006](https://doi.org/10.1016/j.calphad.2018.08.006) C. Xu, C. Li, C. Guo, Z. Du, D. Zhu, C. Zhou, Calphad, 63, 24-36(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2018.11.009](https://doi.org/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_

## FCC_A1 (Ce–Sb)

- Id: `phase:ce-sb: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): 300–1045 K, x(Sb) 0–0
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-sb:fcc-a1)

Names (5): _corpus: _corpus:phase:ce-sb:fcc-a1  
_paper: _paper:10.1016/j.calphad.2006.06.003:(γCe)  
_tdb: _tdb:CeSb-06Su.tdb:FCC_A1, tdb:CeSb-18Xu.tdb:FCC_A1, tdb:CeSb-19Zhu.tdb:FCC_A1  


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

[CeSb-06Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-06Su.tdb): FCC_A1, type code %A, sha256 `f7003706d12f49da…`

~~~~text
28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : CE% SB : VA : !
~~~~

[CeSb-18Xu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-18Xu.tdb): FCC_A1, type code %A, sha256 `cafccc1cc91064c7…`

~~~~text
29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : CE% SB : VA : !
~~~~

[CeSb-19Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-19Zhu.tdb): FCC_A1, type code %A, sha256 `6029aa66bde7b81e…`

~~~~text
29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : CE% SB : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.calphad.2006.06.003](https://doi.org/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.2018.08.006](https://doi.org/10.1016/j.calphad.2018.08.006) C. Xu, C. Li, C. Guo, Z. Du, D. Zhu, C. Zhou, Calphad, 63, 24-36(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2018.11.009](https://doi.org/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_

## HCP_A3 (Ce–Sb)

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

Names (4): _corpus: _corpus:phase:ce-sb:hcp-a3  
_tdb: _tdb:CeSb-06Su.tdb:HCP_A3, tdb:CeSb-18Xu.tdb:HCP_A3, tdb:CeSb-19Zhu.tdb:HCP_A3  


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

[CeSb-06Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-06Su.tdb): HCP_A3, type code %A, sha256 `f7003706d12f49da…`

~~~~text
38: PHASE HCP_A3 %A 2 1 0.5 !
39: CONST HCP_A3 : CE SB : VA : !
~~~~

[CeSb-18Xu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-18Xu.tdb): HCP_A3, type code %A, sha256 `cafccc1cc91064c7…`

~~~~text
39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : CE SB : VA : !
~~~~

[CeSb-19Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-19Zhu.tdb): HCP_A3, type code %A, sha256 `6029aa66bde7b81e…`

~~~~text
39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : CE SB : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.calphad.2006.06.003](https://doi.org/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.2018.08.006](https://doi.org/10.1016/j.calphad.2018.08.006) C. Xu, C. Li, C. Guo, Z. Du, D. Zhu, C. Zhou, Calphad, 63, 24-36(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2018.11.009](https://doi.org/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_

## LIQUID (Ce–Sb)

- Id: `phase:ce-sb:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 3 of 3 calculated diagram(s): 897.24–2500 K, x(Sb) 0–1
- Literature: 12 values (12 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ce-sb:liquid)

Names (5): _corpus: _corpus:phase:ce-sb:liquid  
_paper: _paper:10.1016/j.calphad.2006.06.003:L  
_tdb: _tdb:CeSb-06Su.tdb:LIQUID, tdb:CeSb-18Xu.tdb:LIQUID, tdb:CeSb-19Zhu.tdb:LIQUID  


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

[CeSb-06Su.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-06Su.tdb): LIQUID, type code %, sha256 `f7003706d12f49da…`

~~~~text
23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : CE SB : !
~~~~

[CeSb-18Xu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-18Xu.tdb): LIQUID, type code %, sha256 `cafccc1cc91064c7…`

~~~~text
24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : CE SB : !
~~~~

[CeSb-19Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/CeSb-19Zhu.tdb): LIQUID, type code %, sha256 `6029aa66bde7b81e…`

~~~~text
24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : CE SB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.calphad.2006.06.003](https://doi.org/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.2018.08.006](https://doi.org/10.1016/j.calphad.2018.08.006) C. Xu, C. Li, C. Guo, Z. Du, D. Zhu, C. Zhou, Calphad, 63, 24-36(2018).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2018.11.009](https://doi.org/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_

## 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).