# Pu–Zn phases

> Pu–Zn system: 15 phases (tier A 5, tier C 3, liquid 1, needs_review 6); 15 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/PU-ZN.html · Markdown: https://data.orchid-project.org/phases/pages/PU-ZN.md

15 phases (tier A 5, tier C 3, liquid 1, needs_review 6); 15 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=PU-ZN) · [full JSON](https://data.orchid-project.org/phases/systems/PU-ZN.json) · [Pu–Zn system page](https://data.orchid-project.org/systems/PU-ZN.html) · [Markdown](https://data.orchid-project.org/phases/pages/PU-ZN.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Pu–Zn system (15)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [TETRAGONAL_A6](#phase-pu-zn-a6-tetragonal); _phase:pu-zn:a6-tetragonal_ | In · A6 · tI2 · I4/mmm (139) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 740–755.9 K, x(Zn) 0–0.00359 | 0 | 1 |
| [BCC_A2](#phase-pu-zn-bcc-a2); _phase:pu-zn:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 755.77–968.1 K, x(Zn) 0–0.04935 | 7 | 1 |
| [FCC_A1](#phase-pu-zn-fcc-a1); _phase:pu-zn:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 513.3–790.8 K, x(Zn) 0–0.03686 | 7 | 1 |
| [HCP_A3](#phase-pu-zn-hcp-a3); _phase:pu-zn:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–692.68 K, x(Zn) 1–1 | 4 | 1 |
| [LIQUID](#phase-pu-zn-liquid); _phase:pu-zn:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 692.68–4000 K, x(Zn) 0–1 | 30 | 1 |
| [ALPHA_PU](#phase-pu-zn-pu-alpha); _phase:pu-zn:pu-alpha_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–397.62 K, x(Zn) 0–0 | 0 | 1 |
| [BETA_PU](#phase-pu-zn-pu-beta); _phase:pu-zn:pu-beta_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 397.62–487.9 K, x(Zn) 0–0 | 0 | 1 |
| [GAMMA_PU](#phase-pu-zn-pu-gamma); _phase:pu-zn:pu-gamma_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 487.9–790.8 K, x(Zn) 0–0 | 3 | 1 |
| [PU13ZN58](#phase-pu-zn-pu13zn58); _phase:pu-zn:pu13zn58_ | Gd13Zn58 · hP142 · P6_3/mmc (194) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1146.49 K, x(Zn) 0.81308–0.8169 | 8 | 1 |
| [PU2ZN17](#phase-pu-zn-pu2zn17); _phase:pu-zn:pu2zn17_ | Th2Zn17 · hR19 · R-3m (166) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1201.66 K, x(Zn) 0.89474–0.89474 | 9 | 1 |
| [PU3ZN22](#phase-pu-zn-pu3zn22); _phase:pu-zn:pu3zn22_ | Ce3Zn22 · tI100 · I4_1/amd (141) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1163.3 K, x(Zn) 0.88–0.88 | 6 | 1 |
| [PUZN2_C15](#phase-pu-zn-puzn2-c15); _phase:pu-zn:puzn2-c15_ | Cu2Mg · C15 · cF24 · Fd-3m (227) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–4000 K, x(Zn) 0.66667–0.66667 | 17 | 1 |
| [PUZN9_HT](#phase-pu-zn-puzn9-ht); _phase:pu-zn:puzn9-ht_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 1043.01–1081.09 K, x(Zn) 0.9–0.9 | 6 | 1 |
| [PUZN9_LAMBDA](#phase-pu-zn-puzn9-lambda); _phase:pu-zn:puzn9-lambda_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–973.06 K, x(Zn) 0.905–0.905 | 7 | 1 |
| [PUZN9_LT](#phase-pu-zn-puzn9-lt); _phase:pu-zn:puzn9-lt_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–1043.01 K, x(Zn) 0.9–0.9 | 6 | 1 |

## TETRAGONAL_A6 (Pu–Zn)

- Id: `phase:pu-zn:a6-tetragonal`; status `assigned`
- Structure: In · A6 · tI2 · I4/mmm (139); type `st:a6-in-ti2`; tier A: standard phase name; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 740–755.9 K, x(Zn) 0–0.00359
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:a6-tetragonal)

Names (3): _corpus: _corpus:phase:pu-zn:a6-tetragonal, corpus:phase:pu-zn:tetragonal-a6  
_tdb: _tdb:PuZn-14Liu.tdb:TETRAGONAL_A6  


### TDB models of TETRAGONAL_A6 (1): PHASE and CONSTITUENT statements as written

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): TETRAGONAL_A6, type code %, sha256 `f389f87fc8f23900…`

~~~~text
46: PHASE TETRAGONAL_A6 % 1 1 !
47: CONST TETRAGONAL_A6 : PU% ZN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase_

## BCC_A2 (Pu–Zn)

- Id: `phase:pu-zn: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): 755.77–968.1 K, x(Zn) 0–0.04935
- Literature: 7 values (7 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:bcc-a2)

Names (3): _corpus: _corpus:phase:pu-zn:bcc-a2  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:(εPu)  
_tdb: _tdb:PuZn-14Liu.tdb:BCC_A2  


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

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): BCC_A2, type code %B, sha256 `f389f87fc8f23900…`

~~~~text
36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : PU% ZN : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_

## FCC_A1 (Pu–Zn)

- Id: `phase:pu-zn: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): 513.3–790.8 K, x(Zn) 0–0.03686
- Literature: 7 values (7 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:fcc-a1)

Names (3): _corpus: _corpus:phase:pu-zn:fcc-a1  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:(δPu)  
_tdb: _tdb:PuZn-14Liu.tdb:FCC_A1  


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

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): FCC_A1, type code %A, sha256 `f389f87fc8f23900…`

~~~~text
31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : PU% ZN : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_

## HCP_A3 (Pu–Zn)

- Id: `phase:pu-zn: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: stable in 1 of 1 calculated diagram(s): 300–692.68 K, x(Zn) 1–1
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:hcp-a3)

Names (3): _corpus: _corpus:phase:pu-zn:hcp-a3  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:(Zn)  
_tdb: _tdb:PuZn-14Liu.tdb:HCP_A3  


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

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): HCP_A3, type code %A, sha256 `f389f87fc8f23900…`

~~~~text
41: PHASE HCP_A3 %A 2 1 0.5 !
42: CONST HCP_A3 : PU ZN% : VA : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-3115(64)90131-x](https://doi.org/10.1016/0022-3115%2864%2990131-x) E.Daniel Albrecht, The plutonium-zinc system, Journal of Nuclear Materials 12, 125-130 (1964).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(67)90052-5](https://doi.org/10.1016/0022-5088%2867%2990052-5) E.M. Cramer, D.H. Wood, Phase relations in the zinc-rich portion of the plutonium-zinc system, Journal of the Less Common Metals 13, 112-121 (1967).  
_cited as the source of values for this phase_

## LIQUID (Pu–Zn)

- Id: `phase:pu-zn:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 692.68–4000 K, x(Zn) 0–1
- Literature: 30 values (30 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:liquid)

Names (3): _corpus: _corpus:phase:pu-zn:liquid  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:L  
_tdb: _tdb:PuZn-14Liu.tdb:LIQUID  


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

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): LIQUID, type code %, sha256 `f389f87fc8f23900…`

~~~~text
26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : PU ZN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(67)90052-5](https://doi.org/10.1016/0022-5088%2867%2990052-5) E.M. Cramer, D.H. Wood, Phase relations in the zinc-rich portion of the plutonium-zinc system, Journal of the Less Common Metals 13, 112-121 (1967).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-3115(64)90131-x](https://doi.org/10.1016/0022-3115%2864%2990131-x) E.Daniel Albrecht, The plutonium-zinc system, Journal of Nuclear Materials 12, 125-130 (1964).  
_cited as the source of values for this phase_

## ALPHA_PU (Pu–Zn)

- Id: `phase:pu-zn:pu-alpha`; status `needs_review`
- No structure assigned. Why: no_structure_token; unary_composition
- Candidate (sgte_mmc2): alpha-Pu · mP16 · P2_1/m (11) — Hallstedt 2025 mmc2 row for ALPHA_PU: Pu (alpha)
- Candidate (tdb_comment): alpha-Pu · mP16 · P2_1/m — PuZn-14Liu.tdb: 'Prototype alpha-Pu (mP16, P2_1/m)'
- Stoichiometry: Pu 1.0000
- Stability: stable in 1 of 1 calculated diagram(s): 300–397.62 K, x(Zn) 0–0
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:pu-alpha)

Names (2): _corpus: _corpus:phase:pu-zn:pu-alpha  
_tdb: _tdb:PuZn-14Liu.tdb:ALPHA_PU  


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

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): ALPHA_PU, type code %, sha256 `f389f87fc8f23900…`

~~~~text
51: PHASE ALPHA_PU % 1 1 !
52: CONST ALPHA_PU : PU : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase_

## BETA_PU (Pu–Zn)

- Id: `phase:pu-zn:pu-beta`; status `needs_review`
- No structure assigned. Why: no_structure_token; unary_composition
- Candidate (sgte_mmc2): beta-Pu · mC34 · C2/m (12) — Hallstedt 2025 mmc2 row for BETA_PU: Pu (beta)
- Candidate (tdb_comment): beta-Pu · mC34 · C2/m — PuZn-14Liu.tdb: 'Prototype beta-Pu (mC34, C2/m)'
- Stoichiometry: Pu 1.0000
- Stability: stable in 1 of 1 calculated diagram(s): 397.62–487.9 K, x(Zn) 0–0
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:pu-beta)

Names (3): _corpus: _corpus:phase:pu-zn:pu-beta, corpus:phase:pu-zn:beta-pu  
_tdb: _tdb:PuZn-14Liu.tdb:BETA_PU  


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

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): BETA_PU, type code %, sha256 `f389f87fc8f23900…`

~~~~text
56: PHASE BETA_PU % 1 1 !
57: CONST BETA_PU : PU : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase_

## GAMMA_PU (Pu–Zn)

- Id: `phase:pu-zn:pu-gamma`; status `needs_review`
- No structure assigned. Why: no_structure_token; unary_composition
- Candidate (literature_printed): gamma-Pu · oF8 — printed with a label mapped to this phase
- Candidate (sgte_mmc2): gamma-Pu · oF8 · Fddd (70) — Hallstedt 2025 mmc2 row for GAMMA_PU: Hg4In, Pu (gamma)
- Candidate (tdb_comment): gamma-Pu · oF8 · Fddd — PuZn-14Liu.tdb: 'Prototype gamma-Pu (oF8, Fddd)'
- Stoichiometry: Pu 1.0000
- Stability: stable in 1 of 1 calculated diagram(s): 487.9–790.8 K, x(Zn) 0–0
- Literature: 3 values (3 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:pu-gamma)

Names (4): _corpus: _corpus:phase:pu-zn:pu-gamma, corpus:phase:pu-zn:gamma-pu  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:(γPu)  
_tdb: _tdb:PuZn-14Liu.tdb:GAMMA_PU  


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

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): GAMMA_PU, type code %, sha256 `f389f87fc8f23900…`

~~~~text
61: PHASE GAMMA_PU % 1 1 !
62: CONST GAMMA_PU : PU : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_

## PU13ZN58 (Pu–Zn)

- Id: `phase:pu-zn:pu13zn58`; status `assigned`
- Structure: Gd13Zn58 · hP142 · P6_3/mmc (194); type `st:gd13zn58-hp142`; 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): 300–1146.49 K, x(Zn) 0.81308–0.8169
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:pu13zn58)

Names (3): _corpus: _corpus:phase:pu-zn:pu13zn58  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:Pu13Zn58  
_tdb: _tdb:PuZn-14Liu.tdb:PU13ZN58  


### TDB models of PU13ZN58 (1): PHASE and CONSTITUENT statements as written

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): PU13ZN58, type code %, sha256 `f389f87fc8f23900…`

~~~~text
71: PHASE PU13ZN58 % 2 13 58 !
72: CONST PU13ZN58 : PU : PU ZN% : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(67)90052-5](https://doi.org/10.1016/0022-5088%2867%2990052-5) E.M. Cramer, D.H. Wood, Phase relations in the zinc-rich portion of the plutonium-zinc system, Journal of the Less Common Metals 13, 112-121 (1967).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-3115(64)90131-x](https://doi.org/10.1016/0022-3115%2864%2990131-x) E.Daniel Albrecht, The plutonium-zinc system, Journal of Nuclear Materials 12, 125-130 (1964).  
_cited as the source of values for this phase_

## PU2ZN17 (Pu–Zn)

- Id: `phase:pu-zn:pu2zn17`; status `assigned`
- Structure: Th2Zn17 · hR19 · R-3m (166); type `st:th2zn17-hr19`; 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: Pu 0.1053, Zn 0.8947
- Stability: stable in 1 of 1 calculated diagram(s): 300–1201.66 K, x(Zn) 0.89474–0.89474
- Literature: 9 values (9 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:pu2zn17)

Names (3): _corpus: _corpus:phase:pu-zn:pu2zn17  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:Pu2Zn17  
_tdb: _tdb:PuZn-14Liu.tdb:PU2ZN17  


### TDB models of PU2ZN17 (1): PHASE and CONSTITUENT statements as written

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): PU2ZN17, type code %, sha256 `f389f87fc8f23900…`

~~~~text
81: PHASE PU2ZN17 % 2 2 17 !
82: CONST PU2ZN17 : PU : ZN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(67)90052-5](https://doi.org/10.1016/0022-5088%2867%2990052-5) E.M. Cramer, D.H. Wood, Phase relations in the zinc-rich portion of the plutonium-zinc system, Journal of the Less Common Metals 13, 112-121 (1967).  
_cited as the source of values for this phase_

## PU3ZN22 (Pu–Zn)

- Id: `phase:pu-zn:pu3zn22`; status `assigned`
- Structure: Ce3Zn22 · tI100 · I4_1/amd (141); type `st:ce3zn22-ti100`; 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: Pu 0.1200, Zn 0.8800
- Stability: stable in 1 of 1 calculated diagram(s): 300–1163.3 K, x(Zn) 0.88–0.88
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:pu3zn22)

Names (3): _corpus: _corpus:phase:pu-zn:pu3zn22  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:Pu3Zn22  
_tdb: _tdb:PuZn-14Liu.tdb:PU3ZN22  


### TDB models of PU3ZN22 (1): PHASE and CONSTITUENT statements as written

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): PU3ZN22, type code %, sha256 `f389f87fc8f23900…`

~~~~text
76: PHASE PU3ZN22 % 2 3 22 !
77: CONST PU3ZN22 : PU : ZN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(67)90052-5](https://doi.org/10.1016/0022-5088%2867%2990052-5) E.M. Cramer, D.H. Wood, Phase relations in the zinc-rich portion of the plutonium-zinc system, Journal of the Less Common Metals 13, 112-121 (1967).  
_cited as the source of values for this phase_

## PUZN2_C15 (Pu–Zn)

- Id: `phase:pu-zn:puzn2-c15`; status `assigned`
- Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type `st:c15-cu2mg-cf24`; tier A: standard phase name; confidence high
- Stoichiometry: Pu 0.3333, Zn 0.6667
- Stability: stable in 1 of 1 calculated diagram(s): 300–4000 K, x(Zn) 0.66667–0.66667
- Literature: 17 values (17 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:puzn2-c15)

Names (3): _corpus: _corpus:phase:pu-zn:puzn2-c15  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:PuZn2  
_tdb: _tdb:PuZn-14Liu.tdb:PUZN2_C15  


### TDB models of PUZN2_C15 (1): PHASE and CONSTITUENT statements as written

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): PUZN2_C15, type code %, sha256 `f389f87fc8f23900…`

~~~~text
66: PHASE PUZN2_C15 % 2 1 2 !
67: CONST PUZN2_C15 : PU : ZN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-3115(64)90131-x](https://doi.org/10.1016/0022-3115%2864%2990131-x) E.Daniel Albrecht, The plutonium-zinc system, Journal of Nuclear Materials 12, 125-130 (1964).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(67)90052-5](https://doi.org/10.1016/0022-5088%2867%2990052-5) E.M. Cramer, D.H. Wood, Phase relations in the zinc-rich portion of the plutonium-zinc system, Journal of the Less Common Metals 13, 112-121 (1967).  
_cited as the source of values for this phase_

## PUZN9_HT (Pu–Zn)

- Id: `phase:pu-zn:puzn9-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): (PuZn9-HT) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (PuZn9-HT) — Hallstedt 2025 mmc2 row for PUZN9_HT: PuZn9 (high T, kappa)
- Stoichiometry: Pu 0.1000, Zn 0.9000
- Stability: stable in 1 of 1 calculated diagram(s): 1043.01–1081.09 K, x(Zn) 0.9–0.9
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:puzn9-ht)

Names (3): _corpus: _corpus:phase:pu-zn:puzn9-ht  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:κ  
_tdb: _tdb:PuZn-14Liu.tdb:PUZN9_HT  


### TDB models of PUZN9_HT (1): PHASE and CONSTITUENT statements as written

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): PUZN9_HT, type code %, sha256 `f389f87fc8f23900…`

~~~~text
91: PHASE PUZN9_HT % 2 1 9 !
92: CONST PUZN9_HT : PU : ZN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(67)90052-5](https://doi.org/10.1016/0022-5088%2867%2990052-5) E.M. Cramer, D.H. Wood, Phase relations in the zinc-rich portion of the plutonium-zinc system, Journal of the Less Common Metals 13, 112-121 (1967).  
_cited as the source of values for this phase_

## PUZN9_LAMBDA (Pu–Zn)

- Id: `phase:pu-zn:puzn9-lambda`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (PuZn9-lambda) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (PuZn9-lambda) — Hallstedt 2025 mmc2 row for PUZN9_LAMBDA: PuZn9 (Zn+)
- Stoichiometry: Pu 0.0950, Zn 0.9050
- Stability: stable in 1 of 1 calculated diagram(s): 300–973.06 K, x(Zn) 0.905–0.905
- Literature: 7 values (7 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:puzn9-lambda)

Names (3): _corpus: _corpus:phase:pu-zn:puzn9-lambda  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:λ  
_tdb: _tdb:PuZn-14Liu.tdb:PUZN9_LAMBDA  


### TDB models of PUZN9_LAMBDA (1): PHASE and CONSTITUENT statements as written

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): PUZN9_LAMBDA, type code %, sha256 `f389f87fc8f23900…`

~~~~text
96: PHASE PUZN9_LAMBDA % 2 0.095 0.905 !
97: CONST PUZN9_LAMBDA : PU : ZN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(67)90052-5](https://doi.org/10.1016/0022-5088%2867%2990052-5) E.M. Cramer, D.H. Wood, Phase relations in the zinc-rich portion of the plutonium-zinc system, Journal of the Less Common Metals 13, 112-121 (1967).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-3115(64)90131-x](https://doi.org/10.1016/0022-3115%2864%2990131-x) E.Daniel Albrecht, The plutonium-zinc system, Journal of Nuclear Materials 12, 125-130 (1964).  
_cited as the source of values for this phase_

## PUZN9_LT (Pu–Zn)

- Id: `phase:pu-zn:puzn9-lt`; 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): (PuZn9-LT) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (PuZn9-LT) — Hallstedt 2025 mmc2 row for PUZN9_LT: PuZn9 (low T, kappa-prime)
- Stoichiometry: Pu 0.1000, Zn 0.9000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1043.01 K, x(Zn) 0.9–0.9
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pu-zn:puzn9-lt)

Names (3): _corpus: _corpus:phase:pu-zn:puzn9-lt  
_paper: _paper:10.1016/j.jnucmat.2014.07.001:κ′  
_tdb: _tdb:PuZn-14Liu.tdb:PUZN9_LT  


### TDB models of PUZN9_LT (1): PHASE and CONSTITUENT statements as written

[PuZn-14Liu.tdb](https://orchid-project.org/data/databases/sgte-binary/PuZn-14Liu.tdb): PUZN9_LT, type code %, sha256 `f389f87fc8f23900…`

~~~~text
86: PHASE PUZN9_LT % 2 1 9 !
87: CONST PUZN9_LT : PU : ZN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jnucmat.2014.07.001](https://doi.org/10.1016/j.jnucmat.2014.07.001) X.J. Liu, Q. He, D. Wang, Y. Lu, M.H. Chen, J.P. Jia et al., Thermodynamic assessments of the Pu–Zn and La–Pu systems, Journal of Nuclear Materials 453, 169-175 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0022-5088(67)90052-5](https://doi.org/10.1016/0022-5088%2867%2990052-5) E.M. Cramer, D.H. Wood, Phase relations in the zinc-rich portion of the plutonium-zinc system, Journal of the Less Common Metals 13, 112-121 (1967).  
_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).