# Pd–Sb phases

> Pd–Sb system: 13 phases (tier A 6, tier B 1, tier C 3, liquid 1, needs_review 2); 11 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/PD-SB.html · Markdown: https://data.orchid-project.org/phases/pages/PD-SB.md

13 phases (tier A 6, tier B 1, tier C 3, liquid 1, needs_review 2); 11 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=PD-SB) · [full JSON](https://data.orchid-project.org/phases/systems/PD-SB.json) · [Pd–Sb system page](https://data.orchid-project.org/systems/PD-SB.html) · [Markdown](https://data.orchid-project.org/phases/pages/PD-SB.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Pd–Sb system (13)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [RHOMBOHEDRAL_A7](#phase-pd-sb-a7-rhombohedral); _phase:pd-sb:a7-rhombohedral_ | alpha-As · A7 · hR2 · R-3m (166) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–903.78 K, x(Sb) 1–1 | 2 | 1 |
| [BCC_A2](#phase-pd-sb-bcc-a2); _phase:pd-sb:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 |
| [FCC_A1](#phase-pd-sb-fcc-a1); _phase:pd-sb:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1829 K, x(Sb) 0–0.17384 | 4 | 1 |
| [HCP_A3](#phase-pd-sb-hcp-a3); _phase:pd-sb: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-pd-sb-liquid); _phase:pd-sb:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 865.01–2500 K, x(Sb) 0–1 | 18 | 1 |
| [PD20SB7](#phase-pd-sb-pd20sb7); _phase:pd-sb:pd20sb7_ | Pd20Sb7 · hR27 · R-3 (148) | tier B: DFT-supported (unique MP + OQMD match) | stable in 1 of 1 calculated diagram(s): 300–1221.13 K, x(Sb) 0.25926–0.25926 | 4 | 1 |
| [PD2SB](#phase-pd-sb-pd2sb); _phase:pd-sb:pd2sb_ | Pd2As · oC24 · Cmc2_1 (36) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–864.97 K, x(Sb) 0.33333–0.33333 | 6 | 1 |
| [PD3SB_B32](#phase-pd-sb-pd3sb-b32); _phase:pd-sb:pd3sb-b32_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 1213.12–1487.07 K, x(Sb) 0.25013–0.25892 | 12 | 1 |
| [PD5SB2](#phase-pd-sb-pd5sb2); _phase:pd-sb:pd5sb2_ | Pd5Sb2 · hP42 · P6_3cm (185) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1402.07 K, x(Sb) 0.28571–0.28571 | 8 | 1 |
| [PD5SB3](#phase-pd-sb-pd5sb3); _phase:pd-sb:pd5sb3_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 848.24–1108.95 K, x(Sb) 0.35424–0.37534 | 8 | 1 |
| [PD8SB3](#phase-pd-sb-pd8sb3); _phase:pd-sb:pd8sb3_ | In3Yb8 · hR44 · R-3c (167) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1383.18 K, x(Sb) 0.27273–0.27273 | 4 | 1 |
| [PDSB_B81](#phase-pd-sb-pdsb-b81); _phase:pd-sb:pdsb-b81_ | NiAs · B8_1 · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1067.11 K, x(Sb) 0.5–0.5 | 8 | 1 |
| [PDSB2_C2](#phase-pd-sb-pdsb2-c2); _phase:pd-sb:pdsb2-c2_ | beta-FeS2 · C2 · cP12 · Pa-3 (205) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–951.6 K, x(Sb) 0.66667–0.66667 | 2 | 1 |

## RHOMBOHEDRAL_A7 (Pd–Sb)

- Id: `phase:pd-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 1 of 1 calculated diagram(s): 300–903.78 K, x(Sb) 1–1
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sb:a7-rhombohedral)

Names (4): _corpus: _corpus:phase:pd-sb:a7-rhombohedral, corpus:phase:pd-sb:rhombohedral-a7  
_paper: _paper:10.1016/j.jallcom.2010.07.220:(Sb)  
_tdb: _tdb:PdSb-10Han.tdb:RHOMBOHEDRAL_A7  


### TDB models of RHOMBOHEDRAL_A7 (1): PHASE and CONSTITUENT statements as written

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): RHOMBOHEDRAL_A7, type code %, sha256 `4b211ed3c9150826…`

~~~~text
42: PHASE RHOMBOHEDRAL_A7 % 1 1 !
43: CONST RHOMBOHEDRAL_A7 : SB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(91)90023-o](https://doi.org/10.1016/0925-8388%2891%2990023-o) Ph. Durussel, P. Feschotte, Les systèmes binaires PdSb et PtSb, Journal of Alloys and Compounds 176, 173-181 (1991).  
_cited as the source of values for this phase_

## BCC_A2 (Pd–Sb)

- Id: `phase:pd-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: 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:pd-sb:bcc-a2)

Names (2): _corpus: _corpus:phase:pd-sb:bcc-a2  
_tdb: _tdb:PdSb-10Han.tdb:BCC_A2  


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

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): BCC_A2, type code %B, sha256 `4b211ed3c9150826…`

~~~~text
32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : PD SB : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase_

## FCC_A1 (Pd–Sb)

- Id: `phase:pd-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 1 of 1 calculated diagram(s): 300–1829 K, x(Sb) 0–0.17384
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sb:fcc-a1)

Names (4): _corpus: _corpus:phase:pd-sb:fcc-a1  
_paper: _paper:10.1016/j.jallcom.2010.07.220:Fcc, paper:10.1016/j.jallcom.2010.07.220:fcc  
_tdb: _tdb:PdSb-10Han.tdb:FCC_A1  


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

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): FCC_A1, type code %A, sha256 `4b211ed3c9150826…`

~~~~text
27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : PD% SB : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(91)90023-o](https://doi.org/10.1016/0925-8388%2891%2990023-o) Ph. Durussel, P. Feschotte, Les systèmes binaires PdSb et PtSb, Journal of Alloys and Compounds 176, 173-181 (1991).  
_cited as the source of values for this phase_

## HCP_A3 (Pd–Sb)

- Id: `phase:pd-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 1 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sb:hcp-a3)

Names (2): _corpus: _corpus:phase:pd-sb:hcp-a3  
_tdb: _tdb:PdSb-10Han.tdb:HCP_A3  


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

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): HCP_A3, type code %A, sha256 `4b211ed3c9150826…`

~~~~text
37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : PD SB : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase_

## LIQUID (Pd–Sb)

- Id: `phase:pd-sb:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 865.01–2500 K, x(Sb) 0–1
- Literature: 18 values (18 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sb:liquid)

Names (3): _corpus: _corpus:phase:pd-sb:liquid  
_paper: _paper:10.1016/j.jallcom.2010.07.220:L  
_tdb: _tdb:PdSb-10Han.tdb:LIQUID  


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

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): LIQUID, type code %, sha256 `4b211ed3c9150826…`

~~~~text
22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : PD SB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(91)90023-o](https://doi.org/10.1016/0925-8388%2891%2990023-o) Ph. Durussel, P. Feschotte, Les systèmes binaires PdSb et PtSb, Journal of Alloys and Compounds 176, 173-181 (1991).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02665777](https://doi.org/10.1007/bf02665777) H. Okamoto, Pd-Sb (Palladium-Antimony), JPE 13, 578-579 (1992).  
_cited as the source of values for this phase_

## PD20SB7 (Pd–Sb)

- Id: `phase:pd-sb:pd20sb7`; status `assigned`
- Structure: Pd20Sb7 · hR27 · R-3 (148); type `st:pd20sb7-hr27`; tier B: DFT-supported (unique MP + OQMD match); confidence high
- Stoichiometry: Pd 0.7407, Sb 0.2593
- Stability: stable in 1 of 1 calculated diagram(s): 300–1221.13 K, x(Sb) 0.25926–0.25926
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sb:pd20sb7)

Names (5): _corpus: _corpus:phase:pd-sb:pd20sb7  
_mp: _mp:mp-aaaabsmk  
_oqmd: _oqmd:oqmd-14038  
_paper: _paper:10.1016/j.jallcom.2010.07.220:Pd20Sb7  
_tdb: _tdb:PdSb-10Han.tdb:PD20SB7  


### TDB models of PD20SB7 (1): PHASE and CONSTITUENT statements as written

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): PD20SB7, type code %, sha256 `4b211ed3c9150826…`

~~~~text
52: PHASE PD20SB7 % 2 20 7 !
53: CONST PD20SB7 : PD : SB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(91)90023-o](https://doi.org/10.1016/0925-8388%2891%2990023-o) Ph. Durussel, P. Feschotte, Les systèmes binaires PdSb et PtSb, Journal of Alloys and Compounds 176, 173-181 (1991).  
_cited as the source of values for this phase_

## PD2SB (Pd–Sb)

- Id: `phase:pd-sb:pd2sb`; status `assigned`
- Structure: Pd2As · oC24 · Cmc2_1 (36); type `st:pd2as-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_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Pd 0.6667, Sb 0.3333
- Stability: stable in 1 of 1 calculated diagram(s): 300–864.97 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:pd-sb:pd2sb)

Names (3): _corpus: _corpus:phase:pd-sb:pd2sb  
_paper: _paper:10.1016/j.jallcom.2010.07.220:Pd2Sb  
_tdb: _tdb:PdSb-10Han.tdb:PD2SB  


### TDB models of PD2SB (1): PHASE and CONSTITUENT statements as written

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): PD2SB, type code %, sha256 `4b211ed3c9150826…`

~~~~text
67: PHASE PD2SB % 2 2 1 !
68: CONST PD2SB : PD : SB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(91)90023-o](https://doi.org/10.1016/0925-8388%2891%2990023-o) Ph. Durussel, P. Feschotte, Les systèmes binaires PdSb et PtSb, Journal of Alloys and Compounds 176, 173-181 (1991).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02665777](https://doi.org/10.1007/bf02665777) H. Okamoto, Pd-Sb (Palladium-Antimony), JPE 13, 578-579 (1992).  
_cited as the source of values for this phase_

## PD3SB_B32 (Pd–Sb)

- Id: `phase:pd-sb:pd3sb-b32`; status `needs_review`
- No structure assigned. Why: assessment_declared_blocked_by:site_ratios_contradict_B32; site_ratios_contradict_B32:PdSb-10Han.tdb
- Candidate (literature_printed): NaTl · cF16 — printed with a label mapped to this phase
- Candidate (name_token): NaTl · B32 · cF16 · Fd-3m (227) — Strukturbericht/word 'B32' in the TDB name
- Candidate (sgte_mmc2): NaTl · B32 · cF16 · Fd-3m (227) — Hallstedt 2025 mmc2 row for PD3SB_B32: Pd3Sb
- Candidate (tdb_comment): NaTl · cF16 · Fd-3m — PdSb-10Han.tdb: 'Prototype NaTl (cF16, Fd-3m)'
- Stability: stable in 1 of 1 calculated diagram(s): 1213.12–1487.07 K, x(Sb) 0.25013–0.25892
- Literature: 12 values (12 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sb:pd3sb-b32)

Names (3): _corpus: _corpus:phase:pd-sb:pd3sb-b32  
_paper: _paper:10.1016/j.jallcom.2010.07.220:Pd3Sb  
_tdb: _tdb:PdSb-10Han.tdb:PD3SB_B32  


### TDB models of PD3SB_B32 (1): PHASE and CONSTITUENT statements as written

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): PD3SB_B32, type code %, sha256 `4b211ed3c9150826…`

~~~~text
47: PHASE PD3SB_B32 % 2 3 1 !
48: CONST PD3SB_B32 : PD% SB : SB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(91)90023-o](https://doi.org/10.1016/0925-8388%2891%2990023-o) Ph. Durussel, P. Feschotte, Les systèmes binaires PdSb et PtSb, Journal of Alloys and Compounds 176, 173-181 (1991).  
_cited as the source of values for this phase_

## PD5SB2 (Pd–Sb)

- Id: `phase:pd-sb:pd5sb2`; status `assigned`
- Structure: Pd5Sb2 · hP42 · P6_3cm (185); type `st:pd5sb2-hp42`; 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: Pd 0.7143, Sb 0.2857
- Stability: stable in 1 of 1 calculated diagram(s): 300–1402.07 K, x(Sb) 0.28571–0.28571
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sb:pd5sb2)

Names (3): _corpus: _corpus:phase:pd-sb:pd5sb2  
_paper: _paper:10.1016/j.jallcom.2010.07.220:Pd5Sb2  
_tdb: _tdb:PdSb-10Han.tdb:PD5SB2  


### TDB models of PD5SB2 (1): PHASE and CONSTITUENT statements as written

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): PD5SB2, type code %, sha256 `4b211ed3c9150826…`

~~~~text
62: PHASE PD5SB2 % 2 5 2 !
63: CONST PD5SB2 : PD : SB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(91)90023-o](https://doi.org/10.1016/0925-8388%2891%2990023-o) Ph. Durussel, P. Feschotte, Les systèmes binaires PdSb et PtSb, Journal of Alloys and Compounds 176, 173-181 (1991).  
_cited as the source of values for this phase_

## PD5SB3 (Pd–Sb)

- Id: `phase:pd-sb:pd5sb3`; status `needs_review`
- No structure assigned. Why: no_structure_token; off_stoichiometric_model; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Pd5Sb3) · oP\* — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Pd5Sb3) — Hallstedt 2025 mmc2 row for PD5SB3: Pd5Sb3
- Stability: stable in 1 of 1 calculated diagram(s): 848.24–1108.95 K, x(Sb) 0.35424–0.37534
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sb:pd5sb3)

Names (3): _corpus: _corpus:phase:pd-sb:pd5sb3  
_paper: _paper:10.1016/j.jallcom.2010.07.220:Pd5Sb3  
_tdb: _tdb:PdSb-10Han.tdb:PD5SB3  


### TDB models of PD5SB3 (1): PHASE and CONSTITUENT statements as written

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): PD5SB3, type code %, sha256 `4b211ed3c9150826…`

~~~~text
72: PHASE PD5SB3 % 2 5 3 !
73: CONST PD5SB3 : PD% SB : PD SB% : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(91)90023-o](https://doi.org/10.1016/0925-8388%2891%2990023-o) Ph. Durussel, P. Feschotte, Les systèmes binaires PdSb et PtSb, Journal of Alloys and Compounds 176, 173-181 (1991).  
_cited as the source of values for this phase_

## PD8SB3 (Pd–Sb)

- Id: `phase:pd-sb:pd8sb3`; status `assigned`
- Structure: In3Yb8 · hR44 · R-3c (167); type `st:in3yb8-hr44`; 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 (mp_oqmd_space_groups_differ, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Pd 0.7273, Sb 0.2727
- Stability: stable in 1 of 1 calculated diagram(s): 300–1383.18 K, x(Sb) 0.27273–0.27273
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sb:pd8sb3)

Names (3): _corpus: _corpus:phase:pd-sb:pd8sb3  
_paper: _paper:10.1016/j.jallcom.2010.07.220:Pd8Sb3  
_tdb: _tdb:PdSb-10Han.tdb:PD8SB3  


### TDB models of PD8SB3 (1): PHASE and CONSTITUENT statements as written

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): PD8SB3, type code %, sha256 `4b211ed3c9150826…`

~~~~text
57: PHASE PD8SB3 % 2 8 3 !
58: CONST PD8SB3 : PD : SB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(91)90023-o](https://doi.org/10.1016/0925-8388%2891%2990023-o) Ph. Durussel, P. Feschotte, Les systèmes binaires PdSb et PtSb, Journal of Alloys and Compounds 176, 173-181 (1991).  
_cited as the source of values for this phase_

## PDSB_B81 (Pd–Sb)

- Id: `phase:pd-sb:pdsb-b81`; status `assigned`
- Structure: NiAs · B8_1 · hP4 · P6_3/mmc (194); type `st:b8-1-nias-hp4`; tier A: standard phase name; confidence high
- Stoichiometry: Pd 0.5000, Sb 0.5000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1067.11 K, x(Sb) 0.5–0.5
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sb:pdsb-b81)

Names (3): _corpus: _corpus:phase:pd-sb:pdsb-b81  
_paper: _paper:10.1016/j.jallcom.2010.07.220:PdSb  
_tdb: _tdb:PdSb-10Han.tdb:PDSB_B81  


### TDB models of PDSB_B81 (1): PHASE and CONSTITUENT statements as written

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): PDSB_B81, type code %, sha256 `4b211ed3c9150826…`

~~~~text
77: PHASE PDSB_B81 % 2 1 1 !
78: CONST PDSB_B81 : PD : SB : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(91)90023-o](https://doi.org/10.1016/0925-8388%2891%2990023-o) Ph. Durussel, P. Feschotte, Les systèmes binaires PdSb et PtSb, Journal of Alloys and Compounds 176, 173-181 (1991).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02665777](https://doi.org/10.1007/bf02665777) H. Okamoto, Pd-Sb (Palladium-Antimony), JPE 13, 578-579 (1992).  
_cited as the source of values for this phase_

## PDSB2_C2 (Pd–Sb)

- Id: `phase:pd-sb:pdsb2-c2`; status `assigned`
- Structure: beta-FeS2 · C2 · cP12 · Pa-3 (205); type `st:c2-beta-fes2-cp12`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaaacae and oqmd-7876, space group 205
- Stoichiometry: Pd 0.3333, Sb 0.6667
- Stability: stable in 1 of 1 calculated diagram(s): 300–951.6 K, x(Sb) 0.66667–0.66667
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-sb:pdsb2-c2)

Names (5): _corpus: _corpus:phase:pd-sb:pdsb2-c2  
_mp: _mp:mp-aaaaacae  
_oqmd: _oqmd:oqmd-7876  
_paper: _paper:10.1016/j.jallcom.2010.07.220:PdSb2  
_tdb: _tdb:PdSb-10Han.tdb:PDSB2_C2  


### TDB models of PDSB2_C2 (1): PHASE and CONSTITUENT statements as written

[PdSb-10Han.tdb](https://orchid-project.org/data/databases/sgte-binary/PdSb-10Han.tdb): PDSB2_C2, type code %, sha256 `4b211ed3c9150826…`

~~~~text
82: PHASE PDSB2_C2 % 2 1 2 !
83: CONST PDSB2_C2 : PD : SB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2010.07.220](https://doi.org/10.1016/j.jallcom.2010.07.220) Wei Han, Mei Li, Thermodynamic modeling of the Pd–Sb system, Journal of Alloys and Compounds 507, 521-525 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02665777](https://doi.org/10.1007/bf02665777) H. Okamoto, Pd-Sb (Palladium-Antimony), JPE 13, 578-579 (1992).  
_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).