# Pd–Yb phases

> Pd–Yb system: 17 phases (tier A 7, tier C 4, liquid 1, needs_review 5); 16 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-YB.html · Markdown: https://data.orchid-project.org/phases/pages/PD-YB.md

17 phases (tier A 7, tier C 4, liquid 1, needs_review 5); 16 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-YB) · [full JSON](https://data.orchid-project.org/phases/systems/PD-YB.json) · [Pd–Yb system page](https://data.orchid-project.org/systems/PD-YB.html) · [Markdown](https://data.orchid-project.org/phases/pages/PD-YB.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Pd–Yb system (17)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-pd-yb-bcc-a2); _phase:pd-yb:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300.04–2498.79 K, x(Yb) 1–1 | 0 | 1 |
| [FCC_A1](#phase-pd-yb-fcc-a1); _phase:pd-yb:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1830 K, x(Yb) 0–1 | 27 | 1 |
| [HCP_A3](#phase-pd-yb-hcp-a3); _phase:pd-yb:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 5 | 1 |
| [LIQUID](#phase-pd-yb-liquid); _phase:pd-yb:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 905.94–2500 K, x(Yb) 0–1 | 108 | 1 |
| [PD21YB10_HT](#phase-pd-yb-pd21yb10-ht); _phase:pd-yb:pd21yb10-ht_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 1483.15–1629.75 K, x(Yb) 0.32258–0.32258 | 15 | 1 |
| [PD21YB10_LT](#phase-pd-yb-pd21yb10-lt); _phase:pd-yb:pd21yb10-lt_ | Pd21Sm10 · mC124 · C2/m (12) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1483.15 K, x(Yb) 0.32258–0.32258 | 10 | 1 |
| [PD2YB](#phase-pd-yb-pd2yb); _phase:pd-yb:pd2yb_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 700–1465.81 K, x(Yb) 0.33333–0.33333 | 16 | 1 |
| [PD2YB5_HT](#phase-pd-yb-pd2yb5-ht); _phase:pd-yb:pd2yb5-ht_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–961.86 K, x(Yb) 0.71429–0.71429 | 10 | 1 |
| [PD2YB5_LT](#phase-pd-yb-pd2yb5-lt); _phase:pd-yb:pd2yb5-lt_ | Mn5C2 · mC28 · C2/c (15) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 961.86–974.99 K, x(Yb) 0.71429–0.71429 | 10 | 1 |
| [PD3YB_L12](#phase-pd-yb-pd3yb-l12); _phase:pd-yb:pd3yb-l12_ | AuCu3 · L1_2 · cP4 · Pm-3m (221) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1969.31 K, x(Yb) 0.20889–0.25 | 20 | 1 |
| [PD4YB3](#phase-pd-yb-pd4yb3); _phase:pd-yb:pd4yb3_ | Pd4Pu3 · hR14 · R-3 (148) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1674.87 K, x(Yb) 0.42857–0.42857 | 29 | 1 |
| [PD5YB3_HT](#phase-pd-yb-pd5yb3-ht); _phase:pd-yb:pd5yb3-ht_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 1369.02–1640.94 K, x(Yb) 0.3771–0.38618 | 24 | 1 |
| [PD5YB3_LT](#phase-pd-yb-pd5yb3-lt); _phase:pd-yb:pd5yb3-lt_ | Pd5Pu3 · oC32 · Cmcm (63) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1389.6 K, x(Yb) 0.375–0.37568 | 9 | 1 |
| [PD7YB](#phase-pd-yb-pd7yb); _phase:pd-yb:pd7yb_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–723.79 K, x(Yb) 0.125–0.125 | 12 | 1 |
| [PDYB_B2](#phase-pd-yb-pdyb-b2); _phase:pd-yb:pdyb-b2_ | CsCl · B2 · cP2 · Pm-3m (221) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1664.96–1715.71 K, x(Yb) 0.49815–0.49989 | 21 | 1 |
| [PDYB_B27](#phase-pd-yb-pdyb-b27); _phase:pd-yb:pdyb-b27_ | FeB · B27 · oP8 · Pnma (62) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1705 K, x(Yb) 0.4982–0.5 | 28 | 1 |
| [PDYB3_D011](#phase-pd-yb-pdyb3-d011); _phase:pd-yb:pdyb3-d011_ | Fe3C · D0_11 · oP16 · Pnma (62) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–925.75 K, x(Yb) 0.75–0.75 | 14 | 1 |

## BCC_A2 (Pd–Yb)

- Id: `phase:pd-yb: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): 300.04–2498.79 K, x(Yb) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:bcc-a2)

Names (2): _corpus: _corpus:phase:pd-yb:bcc-a2  
_tdb: _tdb:PdYb-20Kar.tdb:BCC_A2  


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

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): BCC_A2, type code %B, sha256 `10bfded52c31e4a9…`

~~~~text
40: PHASE BCC_A2 %B 2 1 3 !
41: CONST BCC_A2 : PD YB% : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase_

## FCC_A1 (Pd–Yb)

- Id: `phase:pd-yb: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): 300–1830 K, x(Yb) 0–1
- Literature: 27 values (7 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:fcc-a1)

Names (6): _corpus: _corpus:phase:pd-yb:fcc-a1  
_paper: _paper:10.1016/j.matpr.2019.08.196:(Pd), paper:10.1016/j.matpr.2019.08.196:fcc\\\_A1, paper:10.1016/j.matpr.2019.08.196:fcc_A1, paper:10.1016/j.matpr.2019.08.196:βYb  
_tdb: _tdb:PdYb-20Kar.tdb:FCC_A1  


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

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): FCC_A1, type code %A, sha256 `10bfded52c31e4a9…`

~~~~text
35: PHASE FCC_A1 %A 2 1 1 !
36: CONST FCC_A1 : PD% YB% : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## HCP_A3 (Pd–Yb)

- Id: `phase:pd-yb: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: 5 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:hcp-a3)

Names (3): _corpus: _corpus:phase:pd-yb:hcp-a3  
_paper: _paper:10.1016/j.matpr.2019.08.196:αYb  
_tdb: _tdb:PdYb-20Kar.tdb:HCP_A3  


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

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): HCP_A3, type code %A, sha256 `10bfded52c31e4a9…`

~~~~text
45: PHASE HCP_A3 %A 2 1 0.5 !
46: CONST HCP_A3 : PD YB : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## LIQUID (Pd–Yb)

- Id: `phase:pd-yb:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 905.94–2500 K, x(Yb) 0–1
- Literature: 108 values (21 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:liquid)

Names (4): _corpus: _corpus:phase:pd-yb:liquid  
_paper: _paper:10.1016/j.matpr.2019.08.196:L, paper:10.1016/j.matpr.2019.08.196:Liq  
_tdb: _tdb:PdYb-20Kar.tdb:LIQUID  


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

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): LIQUID, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
30: PHASE LIQUID:L % 1 1 !
31: CONST LIQUID:L : PD YB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PD21YB10_HT (Pd–Yb)

- Id: `phase:pd-yb:pd21yb10-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 (literature_printed): (Pb21Yb10-HT) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Pb21Yb10-HT) — Hallstedt 2025 mmc2 row for PD21YB10_HT: Pd21Yb10 (high T)
- Stoichiometry: Pd 0.6774, Yb 0.3226
- Stability: stable in 1 of 1 calculated diagram(s): 1483.15–1629.75 K, x(Yb) 0.32258–0.32258
- Literature: 15 values (3 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pd21yb10-ht)

Names (3): _corpus: _corpus:phase:pd-yb:pd21yb10-ht  
_paper: _paper:10.1016/j.matpr.2019.08.196:Pd21Yb10_HT  
_tdb: _tdb:PdYb-20Kar.tdb:PD21YB10_HT  


### TDB models of PD21YB10_HT (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PD21YB10_HT, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
65: PHASE PD21YB10_HT % 2 21 10 !
66: CONST PD21YB10_HT : PD : YB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PD21YB10_LT (Pd–Yb)

- Id: `phase:pd-yb:pd21yb10-lt`; status `assigned`
- Structure: Pd21Sm10 · mC124 · C2/m (12); type `st:pd21sm10-mc124`; 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: Pd 0.6774, Yb 0.3226
- Stability: stable in 1 of 1 calculated diagram(s): 300–1483.15 K, x(Yb) 0.32258–0.32258
- Literature: 10 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pd21yb10-lt)

Names (3): _corpus: _corpus:phase:pd-yb:pd21yb10-lt  
_paper: _paper:10.1016/j.matpr.2019.08.196:Pd21Yb10_LT  
_tdb: _tdb:PdYb-20Kar.tdb:PD21YB10_LT  


### TDB models of PD21YB10_LT (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PD21YB10_LT, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
60: PHASE PD21YB10_LT % 2 21 10 !
61: CONST PD21YB10_LT : PD : YB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PD2YB (Pd–Yb)

- Id: `phase:pd-yb:pd2yb`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_mp; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (dft_oqmd): Fd-3m (227) — on-hull OQMD Pd2 Yb1 at x(YB)=0.3333
- Candidate (literature_printed): (Pd2Yb) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Pd2Yb) — Hallstedt 2025 mmc2 row for PD2YB: Pd2Yb
- Stoichiometry: Pd 0.6667, Yb 0.3333
- Stability: stable in 1 of 1 calculated diagram(s): 700–1465.81 K, x(Yb) 0.33333–0.33333
- Literature: 16 values (9 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pd2yb)

Names (3): _corpus: _corpus:phase:pd-yb:pd2yb  
_paper: _paper:10.1016/j.matpr.2019.08.196:Pd2Yb  
_tdb: _tdb:PdYb-20Kar.tdb:PD2YB  


### TDB models of PD2YB (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PD2YB, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
70: PHASE PD2YB % 2 2 1 !
71: CONST PD2YB : PD : YB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PD2YB5_HT (Pd–Yb)

- Id: `phase:pd-yb:pd2yb5-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_oqmd): C2/c (15) — on-hull OQMD Pd2 Yb5 at x(YB)=0.7143
- Candidate (literature_printed): (Pd2Yb5-HT) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Pd2Yb5-HT) — Hallstedt 2025 mmc2 row for PD2YB5_HT: Pd2Yb5 (high T)
- Stoichiometry: Pd 0.2857, Yb 0.7143
- Stability: stable in 1 of 1 calculated diagram(s): 300–961.86 K, x(Yb) 0.71429–0.71429
- Literature: 10 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pd2yb5-ht)

Names (3): _corpus: _corpus:phase:pd-yb:pd2yb5-ht  
_paper: _paper:10.1016/j.matpr.2019.08.196:Pd2Yb5_HT  
_tdb: _tdb:PdYb-20Kar.tdb:PD2YB5_HT  


### TDB models of PD2YB5_HT (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PD2YB5_HT, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
105: PHASE PD2YB5_HT % 2 2 5 !
106: CONST PD2YB5_HT : PD : YB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PD2YB5_LT (Pd–Yb)

- Id: `phase:pd-yb:pd2yb5-lt`; status `assigned`
- Structure: Mn5C2 · mC28 · C2/c (15); type `st:mn5c2-mc28`; 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: Pd 0.2857, Yb 0.7143
- Stability: stable in 1 of 1 calculated diagram(s): 961.86–974.99 K, x(Yb) 0.71429–0.71429
- Literature: 10 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pd2yb5-lt)

Names (3): _corpus: _corpus:phase:pd-yb:pd2yb5-lt  
_paper: _paper:10.1016/j.matpr.2019.08.196:Pd2Yb5_LT  
_tdb: _tdb:PdYb-20Kar.tdb:PD2YB5_LT  


### TDB models of PD2YB5_LT (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PD2YB5_LT, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
100: PHASE PD2YB5_LT % 2 2 5 !
101: CONST PD2YB5_LT : PD : YB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PD3YB_L12 (Pd–Yb)

- Id: `phase:pd-yb:pd3yb-l12`; status `assigned`
- Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type `st:l1-2-aucu3-cp4`; tier A: standard phase name; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 300–1969.31 K, x(Yb) 0.20889–0.25
- Literature: 20 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pd3yb-l12)

Names (3): _corpus: _corpus:phase:pd-yb:pd3yb-l12  
_paper: _paper:10.1016/j.matpr.2019.08.196:Pd3Yb  
_tdb: _tdb:PdYb-20Kar.tdb:PD3YB_L12  


### TDB models of PD3YB_L12 (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PD3YB_L12, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
55: PHASE PD3YB_L12 % 2 3 1 !
56: CONST PD3YB_L12 : PD : PD YB% : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PD4YB3 (Pd–Yb)

- Id: `phase:pd-yb:pd4yb3`; 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_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Pd 0.5714, Yb 0.4286
- Stability: stable in 1 of 1 calculated diagram(s): 300–1674.87 K, x(Yb) 0.42857–0.42857
- Literature: 29 values (13 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pd4yb3)

Names (3): _corpus: _corpus:phase:pd-yb:pd4yb3  
_paper: _paper:10.1016/j.matpr.2019.08.196:Pd4Yb3  
_tdb: _tdb:PdYb-20Kar.tdb:PD4YB3  


### TDB models of PD4YB3 (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PD4YB3, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
85: PHASE PD4YB3 % 2 4 3 !
86: CONST PD4YB3 : PD : YB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.tca.2016.01.004](https://doi.org/10.1016/j.tca.2016.01.004) A. Ciccioli, G. Balducci, G. Gigli, A. Provino, A. Palenzona, P. Manfrinetti, Vaporization thermodynamics of Pd-rich intermediate phases in the Pd–Yb system, Thermochimica Acta 626, 31-36 (2016).  
_cited as the source of values for this phase_

## PD5YB3_HT (Pd–Yb)

- Id: `phase:pd-yb:pd5yb3-ht`; status `needs_review`
- No structure assigned. Why: no_structure_token; off_stoichiometric_model; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Pd5Yb3-HT) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Pd5Yb3-HT) — Hallstedt 2025 mmc2 row for PD5YB3_HT: Pd5Yb3 (high T)
- Stability: stable in 1 of 1 calculated diagram(s): 1369.02–1640.94 K, x(Yb) 0.3771–0.38618
- Literature: 24 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pd5yb3-ht)

Names (3): _corpus: _corpus:phase:pd-yb:pd5yb3-ht  
_paper: _paper:10.1016/j.matpr.2019.08.196:Pd5Yb3_HT  
_tdb: _tdb:PdYb-20Kar.tdb:PD5YB3_HT  


### TDB models of PD5YB3_HT (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PD5YB3_HT, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
80: PHASE PD5YB3_HT % 2 5 3 !
81: CONST PD5YB3_HT : PD% YB : YB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PD5YB3_LT (Pd–Yb)

- Id: `phase:pd-yb:pd5yb3-lt`; status `assigned`
- Structure: Pd5Pu3 · oC32 · Cmcm (63); type `st:pd5pu3-oc32`; 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): 300–1389.6 K, x(Yb) 0.375–0.37568
- Literature: 9 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pd5yb3-lt)

Names (3): _corpus: _corpus:phase:pd-yb:pd5yb3-lt  
_paper: _paper:10.1016/j.matpr.2019.08.196:Pd5Yb3_LT  
_tdb: _tdb:PdYb-20Kar.tdb:PD5YB3_LT  


### TDB models of PD5YB3_LT (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PD5YB3_LT, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
75: PHASE PD5YB3_LT % 2 5 3 !
76: CONST PD5YB3_LT : PD% YB : YB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PD7YB (Pd–Yb)

- Id: `phase:pd-yb:pd7yb`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_mp; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (dft_oqmd): Fm-3m (225) — on-hull OQMD Pd7 Yb1 at x(YB)=0.1250
- Candidate (literature_printed): (Pd7Yb) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Pd7Yb) — Hallstedt 2025 mmc2 row for PD7YB: Pd7Yb
- Stoichiometry: Pd 0.8750, Yb 0.1250
- Stability: stable in 1 of 1 calculated diagram(s): 300–723.79 K, x(Yb) 0.125–0.125
- Literature: 12 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pd7yb)

Names (3): _corpus: _corpus:phase:pd-yb:pd7yb  
_paper: _paper:10.1016/j.matpr.2019.08.196:Pd7Yb  
_tdb: _tdb:PdYb-20Kar.tdb:PD7YB  


### TDB models of PD7YB (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PD7YB, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
50: PHASE PD7YB % 2 7 1 !
51: CONST PD7YB : PD : YB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PDYB_B2 (Pd–Yb)

- Id: `phase:pd-yb:pdyb-b2`; status `assigned`
- Structure: CsCl · B2 · cP2 · Pm-3m (221); type `st:b2-cscl-cp2`; tier A: standard phase name; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 1664.96–1715.71 K, x(Yb) 0.49815–0.49989
- Literature: 21 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pdyb-b2)

Names (4): _corpus: _corpus:phase:pd-yb:pdyb-b2  
_paper: _paper:10.1016/j.matpr.2019.08.196:PdYb\\\_HT, paper:10.1016/j.matpr.2019.08.196:PdYb_HT  
_tdb: _tdb:PdYb-20Kar.tdb:PDYB_B2  


### TDB models of PDYB_B2 (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PDYB_B2, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
95: PHASE PDYB_B2 % 2 1 1 !
96: CONST PDYB_B2 : PD : PD YB% : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PDYB_B27 (Pd–Yb)

- Id: `phase:pd-yb:pdyb-b27`; status `assigned`
- Structure: FeB · B27 · oP8 · Pnma (62); type `st:b27-feb-op8`; tier A: standard phase name; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 300–1705 K, x(Yb) 0.4982–0.5
- Literature: 28 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pdyb-b27)

Names (4): _corpus: _corpus:phase:pd-yb:pdyb-b27  
_paper: _paper:10.1016/j.matpr.2019.08.196:PdYb\\\_LT, paper:10.1016/j.matpr.2019.08.196:PdYb_LT  
_tdb: _tdb:PdYb-20Kar.tdb:PDYB_B27  


### TDB models of PDYB_B27 (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PDYB_B27, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
90: PHASE PDYB_B27 % 2 1 1 !
91: CONST PDYB_B27 : PD : PD YB% : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports values for this phase_

## PDYB3_D011 (Pd–Yb)

- Id: `phase:pd-yb:pdyb3-d011`; status `assigned`
- Structure: Fe3C · D0_11 · oP16 · Pnma (62); type `st:d0-11-fe3c-op16`; tier A: standard phase name; confidence high
- Stoichiometry: Pd 0.2500, Yb 0.7500
- Stability: stable in 1 of 1 calculated diagram(s): 300–925.75 K, x(Yb) 0.75–0.75
- Literature: 14 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pd-yb:pdyb3-d011)

Names (4): _corpus: _corpus:phase:pd-yb:pdyb3-d011  
_paper: _paper:10.1016/j.matpr.2019.08.196:PdYb3, paper:10.1016/j.matpr.2019.08.196:PdYb_3  
_tdb: _tdb:PdYb-20Kar.tdb:PDYB3_D011  


### TDB models of PDYB3_D011 (1): PHASE and CONSTITUENT statements as written

[PdYb-20Kar.tdb](https://orchid-project.org/data/databases/sgte-binary/PdYb-20Kar.tdb): PDYB3_D011, type code %, sha256 `10bfded52c31e4a9…`

~~~~text
110: PHASE PDYB3_D011 % 2 1 3 !
111: CONST PDYB3_D011 : PD : YB : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.matpr.2019.08.196](https://doi.org/10.1016/j.matpr.2019.08.196) Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020).  
_assessment that models this phase; reports 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).