# Pr–Zn phases

> Pr–Zn system: 16 phases (tier A 5, tier B 2, tier C 6, liquid 1, needs_review 2); 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/PR-ZN.html · Markdown: https://data.orchid-project.org/phases/pages/PR-ZN.md

16 phases (tier A 5, tier B 2, tier C 6, liquid 1, needs_review 2); 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=PR-ZN) · [full JSON](https://data.orchid-project.org/phases/systems/PR-ZN.json) · [Pr–Zn system page](https://data.orchid-project.org/systems/PR-ZN.html) · [Markdown](https://data.orchid-project.org/phases/pages/PR-ZN.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Pr–Zn system (16)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-pr-zn-bcc-a2); _phase:pr-zn:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 823.29–1209.79 K, x(Zn) 0–0.12528 | 12 | 2 |
| [DHCP](#phase-pr-zn-dhcp-a3); _phase:pr-zn:dhcp-a3_ | alpha-La · A3' · hP4 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1171.07 K, x(Zn) 0–0.01504 | 6 | 2 |
| [FCC_A1](#phase-pr-zn-fcc-a1); _phase:pr-zn:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 |
| [HCP_A3](#phase-pr-zn-hcp-a3); _phase:pr-zn:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1887.68 K, x(Zn) 1–1 | 2 | 2 |
| [LIQUID](#phase-pr-zn-liquid); _phase:pr-zn:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 692.67–2500 K, x(Zn) 0–1 | 50 | 2 |
| [PR13ZN58](#phase-pr-zn-pr13zn58); _phase:pr-zn:pr13zn58_ | Gd13Zn58 · hP142 · P6_3/mmc (194) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1163.81 K, x(Zn) 0.8169–0.8169 | 10 | 2 |
| [PR2ZN17_HT](#phase-pr-zn-pr2zn17-ht); _phase:pr-zn:pr2zn17-ht_ | Th2Zn17 · hR19 · R-3m (166) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 1047.37–1250.94 K, x(Zn) 0.89474–0.89474 | 10 | 2 |
| [PR2ZN17_LT](#phase-pr-zn-pr2zn17-lt); _phase:pr-zn:pr2zn17-lt_ | Ni17Th2 · hP38 · P6_3/mmc (194) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1048.12 K, x(Zn) 0.89474–0.89474 | 8 | 2 |
| [PR3ZN11](#phase-pr-zn-pr3zn11); _phase:pr-zn:pr3zn11_ | Al11La3 · oI28 · Immm (71) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1128.73 K, x(Zn) 0.78571–0.78571 | 10 | 2 |
| [PR3ZN22](#phase-pr-zn-pr3zn22); _phase:pr-zn:pr3zn22_ | Ce3Zn22 · tI100 · I4_1/amd (141) | tier B: DFT-supported (unique MP + OQMD match) | stable in 2 of 2 calculated diagram(s): 300–1229.2 K, x(Zn) 0.88–0.88 | 10 | 2 |
| [PRZN_B2](#phase-pr-zn-przn-b2); _phase:pr-zn:przn-b2_ | CsCl · B2 · cP2 · Pm-3m (221) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1157.75 K, x(Zn) 0.5–0.5 | 21 | 2 |
| [PRZN11](#phase-pr-zn-przn11); _phase:pr-zn:przn11_ | BaCd11 · tI48 · I4_1/amd (141) | tier B: DFT-supported (unique MP + OQMD match) | stable in 2 of 2 calculated diagram(s): 300–1015.86 K, x(Zn) 0.91667–0.91667 | 9 | 2 |
| [PRZN2](#phase-pr-zn-przn2); _phase:pr-zn:przn2_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–1172.24 K, x(Zn) 0.66667–0.66667 | 7 | 1 |
| [PRZN2_HT](#phase-pr-zn-przn2-ht); _phase:pr-zn:przn2-ht_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 823.29–1171.54 K, x(Zn) 0.66667–0.66667 | 8 | 1 |
| [PRZN2_LT](#phase-pr-zn-przn2-lt); _phase:pr-zn:przn2-lt_ | Hg2K · oI12 · Imma (74) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–823.29 K, x(Zn) 0.66667–0.66667 | 2 | 1 |
| [PRZN3](#phase-pr-zn-przn3); _phase:pr-zn:przn3_ | YZn3 · oP16 · Pnma (62) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1107.47 K, x(Zn) 0.75–0.75 | 10 | 2 |

## BCC_A2 (Pr–Zn)

- Id: `phase:pr-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 2 of 2 calculated diagram(s): 823.29–1209.79 K, x(Zn) 0–0.12528
- Literature: 12 values (12 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:bcc-a2)

Names (6): _corpus: _corpus:phase:pr-zn:bcc-a2  
_paper: _paper:10.1016/j.jallcom.2007.03.120:bcc_A2, paper:10.1016/j.jallcom.2007.05.005:Bcc, paper:10.1016/j.jallcom.2007.05.005:bcc  
_tdb: _tdb:PrZn-08Hua.tdb:BCC_A2, tdb:PrZn-08Wan.tdb:BCC_A2  


### TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): BCC_A2, type code %B, sha256 `b69fb1ec5dd79bb6…`

~~~~text
33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : PR% ZN : VA% : !
~~~~

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): BCC_A2, type code %B, sha256 `da6ba6c3a65fc781…`

~~~~text
33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : PR% ZN : VA% : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1016/s0925-8388(00)01378-5](https://doi.org/10.1016/s0925-8388%2800%2901378-5) A. Saccone, A.M. Cardinale, S. Delfino, G. Cacciamani, R. Ferro, Effect of Cu and Zn on the melting and transformation temperatures of Pr and Gd, Journal of Alloys and Compounds 317-318, 503-512 (2001).  
_cited as the source of values for this phase_

## DHCP (Pr–Zn)

- Id: `phase:pr-zn:dhcp-a3`; status `assigned`
- Structure: alpha-La · A3' · hP4 · P6_3/mmc (194); type `st:a3-alpha-la-hp4`; tier A: standard phase name; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 300–1171.07 K, x(Zn) 0–0.01504
- Literature: 6 values (6 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:dhcp-a3)

Names (6): _corpus: _corpus:phase:pr-zn:dhcp-a3, corpus:phase:pr-zn:dhcp  
_paper: _paper:10.1016/j.jallcom.2007.03.120:dhcp, paper:10.1016/j.jallcom.2007.05.005:dhcp  
_tdb: _tdb:PrZn-08Hua.tdb:DHCP, tdb:PrZn-08Wan.tdb:DHCP  


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

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): DHCP, type code %A, sha256 `b69fb1ec5dd79bb6…`

~~~~text
43: PHASE DHCP %A 1 1 !
44: CONST DHCP : PR : !
~~~~

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): DHCP, type code %A, sha256 `da6ba6c3a65fc781…`

~~~~text
43: PHASE DHCP %A 1 1 !
44: CONST DHCP : PR% ZN : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1016/s0925-8388(00)01378-5](https://doi.org/10.1016/s0925-8388%2800%2901378-5) A. Saccone, A.M. Cardinale, S. Delfino, G. Cacciamani, R. Ferro, Effect of Cu and Zn on the melting and transformation temperatures of Pr and Gd, Journal of Alloys and Compounds 317-318, 503-512 (2001).  
_cited as the source of values for this phase_

## FCC_A1 (Pr–Zn)

- Id: `phase:pr-zn:fcc-a1`; status `assigned`
- Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high
- Stoichiometry: Zn 1.0000
- Stability: not stable in 2 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:fcc-a1)

Names (3): _corpus: _corpus:phase:pr-zn:fcc-a1  
_tdb: _tdb:PrZn-08Hua.tdb:FCC_A1, tdb:PrZn-08Wan.tdb:FCC_A1  


### TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): FCC_A1, type code %A, sha256 `b69fb1ec5dd79bb6…`

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

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): FCC_A1, type code %A, sha256 `da6ba6c3a65fc781…`

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

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase_

## HCP_A3 (Pr–Zn)

- Id: `phase:pr-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
- Stoichiometry: Zn 1.0000
- Stability: stable in 2 of 2 calculated diagram(s): 300–1887.68 K, x(Zn) 1–1
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:hcp-a3)

Names (4): _corpus: _corpus:phase:pr-zn:hcp-a3  
_paper: _paper:10.1016/j.jallcom.2007.05.005:hcp  
_tdb: _tdb:PrZn-08Hua.tdb:HCP_A3, tdb:PrZn-08Wan.tdb:HCP_A3  


### TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): HCP_A3, type code %A, sha256 `b69fb1ec5dd79bb6…`

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

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): HCP_A3, type code %A, sha256 `da6ba6c3a65fc781…`

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

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_

## LIQUID (Pr–Zn)

- Id: `phase:pr-zn:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 692.67–2500 K, x(Zn) 0–1
- Literature: 50 values (50 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:liquid)

Names (5): _corpus: _corpus:phase:pr-zn:liquid  
_paper: _paper:10.1016/j.jallcom.2007.03.120:L, paper:10.1016/j.jallcom.2007.05.005:L  
_tdb: _tdb:PrZn-08Hua.tdb:LIQUID, tdb:PrZn-08Wan.tdb:LIQUID  


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

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): LIQUID, type code %, sha256 `b69fb1ec5dd79bb6…`

~~~~text
23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : PR ZN : !
~~~~

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): LIQUID, type code %, sha256 `da6ba6c3a65fc781…`

~~~~text
23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : PR ZN : !
~~~~

Example references (7 of 7; assessments first): 

- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02811772](https://doi.org/10.1007/bf02811772) Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).  
_cited as the source of values for this phase_
- [doi:10.1016/s0925-8388(00)01378-5](https://doi.org/10.1016/s0925-8388%2800%2901378-5) A. Saccone, A.M. Cardinale, S. Delfino, G. Cacciamani, R. Ferro, Effect of Cu and Zn on the melting and transformation temperatures of Pr and Gd, Journal of Alloys and Compounds 317-318, 503-512 (2001).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(66)90058-0](https://doi.org/10.1016/0022-5088%2866%2990058-0) D.J. Michel, E. Ryba, P.K. Kejriwal, Melting points of REZn2 intermetallic compounds, Journal of the Less Common Metals 11, 67-69 (1966).  
_cited as the source of values for this phase_
- [doi:10.1016/0364-5916(85)90021-5](https://doi.org/10.1016/0364-5916%2885%2990021-5) Bo Sundman, Bo Jansson, Jan-Olof Andersson, The Thermo-Calc databank system, Calphad 9, 153-190 (1985).  
_cited as the source of values for this phase_

## PR13ZN58 (Pr–Zn)

- Id: `phase:pr-zn:pr13zn58`; 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_on_hull_entry_in_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Pr 0.1831, Zn 0.8169
- Stability: stable in 2 of 2 calculated diagram(s): 300–1163.81 K, x(Zn) 0.8169–0.8169
- Literature: 10 values (10 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:pr13zn58)

Names (5): _corpus: _corpus:phase:pr-zn:pr13zn58  
_paper: _paper:10.1016/j.jallcom.2007.03.120:Pr13Zn58, paper:10.1016/j.jallcom.2007.05.005:Pr13Zn58  
_tdb: _tdb:PrZn-08Hua.tdb:PR13ZN58, tdb:PrZn-08Wan.tdb:PR13ZN58  


### TDB models of PR13ZN58 (2): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): PR13ZN58, type code %, sha256 `b69fb1ec5dd79bb6…`

~~~~text
68: PHASE PR13ZN58 % 2 13 58 !
69: CONST PR13ZN58 : PR : ZN : !
~~~~

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): PR13ZN58, type code %, sha256 `da6ba6c3a65fc781…`

~~~~text
73: PHASE PR13ZN58 % 2 13 58 !
74: CONST PR13ZN58 : PR : ZN : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02664226](https://doi.org/10.1007/bf02664226) P. Chiotti, J. T. Mason, Thermodynamic properties of Pr-Zn alloys, Metall Trans 2, 967-973 (1971).  
_cited as the source of values for this phase_

## PR2ZN17_HT (Pr–Zn)

- Id: `phase:pr-zn:pr2zn17-ht`; 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 (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: Pr 0.1053, Zn 0.8947
- Stability: stable in 2 of 2 calculated diagram(s): 1047.37–1250.94 K, x(Zn) 0.89474–0.89474
- Literature: 10 values (10 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:pr2zn17-ht)

Names (5): _corpus: _corpus:phase:pr-zn:pr2zn17-ht  
_paper: _paper:10.1016/j.jallcom.2007.03.120:βPr2Zn17, paper:10.1016/j.jallcom.2007.05.005:Pr2Zn17-H  
_tdb: _tdb:PrZn-08Hua.tdb:PR2ZN17_HT, tdb:PrZn-08Wan.tdb:PR2ZN17_HT  


### TDB models of PR2ZN17_HT (2): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): PR2ZN17_HT, type code %, sha256 `b69fb1ec5dd79bb6…`

~~~~text
83: PHASE PR2ZN17_HT % 2 2 17 !
84: CONST PR2ZN17_HT : PR : ZN : !
~~~~

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): PR2ZN17_HT, type code %, sha256 `da6ba6c3a65fc781…`

~~~~text
88: PHASE PR2ZN17_HT % 2 2 17 !
89: CONST PR2ZN17_HT : PR : ZN : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02811772](https://doi.org/10.1007/bf02811772) Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).  
_cited as the source of values for this phase_

## PR2ZN17_LT (Pr–Zn)

- Id: `phase:pr-zn:pr2zn17-lt`; status `assigned`
- Structure: Ni17Th2 · hP38 · P6_3/mmc (194); type `st:ni17th2-hp38`; 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: Pr 0.1053, Zn 0.8947
- Stability: stable in 2 of 2 calculated diagram(s): 300–1048.12 K, x(Zn) 0.89474–0.89474
- Literature: 8 values (8 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:pr2zn17-lt)

Names (6): _corpus: _corpus:phase:pr-zn:pr2zn17-lt  
_paper: _paper:10.1016/j.jallcom.2007.03.120:Pr2Zn17, paper:10.1016/j.jallcom.2007.03.120:αPr2Zn17, paper:10.1016/j.jallcom.2007.05.005:Pr2Zn17-L  
_tdb: _tdb:PrZn-08Hua.tdb:PR2ZN17_LT, tdb:PrZn-08Wan.tdb:PR2ZN17_LT  


### TDB models of PR2ZN17_LT (2): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): PR2ZN17_LT, type code %, sha256 `b69fb1ec5dd79bb6…`

~~~~text
78: PHASE PR2ZN17_LT % 2 2 17 !
79: CONST PR2ZN17_LT : PR : ZN : !
~~~~

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): PR2ZN17_LT, type code %, sha256 `da6ba6c3a65fc781…`

~~~~text
83: PHASE PR2ZN17_LT % 2 2 17 !
84: CONST PR2ZN17_LT : PR : ZN : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02811772](https://doi.org/10.1007/bf02811772) Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).  
_cited as the source of values for this phase_

## PR3ZN11 (Pr–Zn)

- Id: `phase:pr-zn:pr3zn11`; status `assigned`
- Structure: Al11La3 · oI28 · Immm (71); type `st:al11la3-oi28`; 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: Pr 0.2143, Zn 0.7857
- Stability: stable in 2 of 2 calculated diagram(s): 300–1128.73 K, x(Zn) 0.78571–0.78571
- Literature: 10 values (10 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:pr3zn11)

Names (5): _corpus: _corpus:phase:pr-zn:pr3zn11  
_paper: _paper:10.1016/j.jallcom.2007.03.120:Pr3Zn11, paper:10.1016/j.jallcom.2007.05.005:Pr3Zn11  
_tdb: _tdb:PrZn-08Hua.tdb:PR3ZN11, tdb:PrZn-08Wan.tdb:PR3ZN11  


### TDB models of PR3ZN11 (2): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): PR3ZN11, type code %, sha256 `b69fb1ec5dd79bb6…`

~~~~text
63: PHASE PR3ZN11 % 2 3 11 !
64: CONST PR3ZN11 : PR : ZN : !
~~~~

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): PR3ZN11, type code %, sha256 `da6ba6c3a65fc781…`

~~~~text
68: PHASE PR3ZN11 % 2 3 11 !
69: CONST PR3ZN11 : PR : ZN : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02664226](https://doi.org/10.1007/bf02664226) P. Chiotti, J. T. Mason, Thermodynamic properties of Pr-Zn alloys, Metall Trans 2, 967-973 (1971).  
_cited as the source of values for this phase_

## PR3ZN22 (Pr–Zn)

- Id: `phase:pr-zn:pr3zn22`; status `assigned`
- Structure: Ce3Zn22 · tI100 · I4_1/amd (141); type `st:ce3zn22-ti100`; tier B: DFT-supported (unique MP + OQMD match); confidence high
- Stoichiometry: Pr 0.1200, Zn 0.8800
- Stability: stable in 2 of 2 calculated diagram(s): 300–1229.2 K, x(Zn) 0.88–0.88
- Literature: 10 values (10 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:pr3zn22)

Names (7): _corpus: _corpus:phase:pr-zn:pr3zn22  
_mp: _mp:mp-aaacqieu  
_oqmd: _oqmd:oqmd-670097  
_paper: _paper:10.1016/j.jallcom.2007.03.120:Pr3Zn22, paper:10.1016/j.jallcom.2007.05.005:Pr3Zn22  
_tdb: _tdb:PrZn-08Hua.tdb:PR3ZN22, tdb:PrZn-08Wan.tdb:PR3ZN22  


### TDB models of PR3ZN22 (2): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): PR3ZN22, type code %, sha256 `b69fb1ec5dd79bb6…`

~~~~text
73: PHASE PR3ZN22 % 2 3 22 !
74: CONST PR3ZN22 : PR : ZN : !
~~~~

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): PR3ZN22, type code %, sha256 `da6ba6c3a65fc781…`

~~~~text
78: PHASE PR3ZN22 % 2 3 22 !
79: CONST PR3ZN22 : PR : ZN : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02664226](https://doi.org/10.1007/bf02664226) P. Chiotti, J. T. Mason, Thermodynamic properties of Pr-Zn alloys, Metall Trans 2, 967-973 (1971).  
_cited as the source of values for this phase_

## PRZN_B2 (Pr–Zn)

- Id: `phase:pr-zn:przn-b2`; status `assigned`
- Structure: CsCl · B2 · cP2 · Pm-3m (221); type `st:b2-cscl-cp2`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaaaars and oqmd-18895, space group 221
- Stoichiometry: Pr 0.5000, Zn 0.5000
- Stability: stable in 2 of 2 calculated diagram(s): 300–1157.75 K, x(Zn) 0.5–0.5
- Literature: 21 values (21 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:przn-b2)

Names (7): _corpus: _corpus:phase:pr-zn:przn-b2  
_mp: _mp:mp-aaaaaars  
_oqmd: _oqmd:oqmd-18895  
_paper: _paper:10.1016/j.jallcom.2007.03.120:PrZn, paper:10.1016/j.jallcom.2007.05.005:PrZn  
_tdb: _tdb:PrZn-08Hua.tdb:PRZN_B2, tdb:PrZn-08Wan.tdb:PRZN_B2  


### TDB models of PRZN_B2 (2): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): PRZN_B2, type code %, sha256 `b69fb1ec5dd79bb6…`

~~~~text
48: PHASE PRZN_B2 % 2 1 1 !
49: CONST PRZN_B2 : PR : ZN : !
~~~~

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): PRZN_B2, type code %, sha256 `da6ba6c3a65fc781…`

~~~~text
48: PHASE PRZN_B2 % 2 1 1 !
49: CONST PRZN_B2 : PR : ZN : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1016/s0925-8388(00)01378-5](https://doi.org/10.1016/s0925-8388%2800%2901378-5) A. Saccone, A.M. Cardinale, S. Delfino, G. Cacciamani, R. Ferro, Effect of Cu and Zn on the melting and transformation temperatures of Pr and Gd, Journal of Alloys and Compounds 317-318, 503-512 (2001).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02811772](https://doi.org/10.1007/bf02811772) Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).  
_cited as the source of values for this phase_
- [doi:10.1016/0364-5916(85)90021-5](https://doi.org/10.1016/0364-5916%2885%2990021-5) Bo Sundman, Bo Jansson, Jan-Olof Andersson, The Thermo-Calc databank system, Calphad 9, 153-190 (1985).  
_cited as the source of values for this phase_

## PRZN11 (Pr–Zn)

- Id: `phase:pr-zn:przn11`; status `assigned`
- Structure: BaCd11 · tI48 · I4_1/amd (141); type `st:bacd11-ti48`; tier B: DFT-supported (unique MP + OQMD match); confidence high
- Stoichiometry: Pr 0.0833, Zn 0.9167
- Stability: stable in 2 of 2 calculated diagram(s): 300–1015.86 K, x(Zn) 0.91667–0.91667
- Literature: 9 values (9 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:przn11)

Names (7): _corpus: _corpus:phase:pr-zn:przn11  
_mp: _mp:mp-aaabgilw  
_oqmd: _oqmd:oqmd-19303  
_paper: _paper:10.1016/j.jallcom.2007.03.120:PrZn11, paper:10.1016/j.jallcom.2007.05.005:PrZn11  
_tdb: _tdb:PrZn-08Hua.tdb:PRZN11, tdb:PrZn-08Wan.tdb:PRZN11  


### TDB models of PRZN11 (2): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): PRZN11, type code %, sha256 `b69fb1ec5dd79bb6…`

~~~~text
88: PHASE PRZN11 % 2 1 11 !
89: CONST PRZN11 : PR : ZN : !
~~~~

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): PRZN11, type code %, sha256 `da6ba6c3a65fc781…`

~~~~text
93: PHASE PRZN11 % 2 1 11 !
94: CONST PRZN11 : PR : ZN : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02664226](https://doi.org/10.1007/bf02664226) P. Chiotti, J. T. Mason, Thermodynamic properties of Pr-Zn alloys, Metall Trans 2, 967-973 (1971).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02811772](https://doi.org/10.1007/bf02811772) Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).  
_cited as the source of values for this phase_

## PRZN2 (Pr–Zn)

- Id: `phase:pr-zn:przn2`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition
- Candidate (dft_mp): Imma (74) — on-hull MP PrZn2 at x(ZN)=0.6667
- Candidate (dft_oqmd): Imma (74) — on-hull OQMD Pr1 Zn2 at x(ZN)=0.6667
- Candidate (tdb_comment): Hg2K · oI12 · Imma — PrZn-08Hua.tdb: 'Prototype Hg2K (oI12, Imma)'
- Stoichiometry: Pr 0.3333, Zn 0.6667
- Stability: stable in 1 of 1 calculated diagram(s): 300–1172.24 K, x(Zn) 0.66667–0.66667
- Literature: 7 values (7 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:przn2)

Names (3): _corpus: _corpus:phase:pr-zn:przn2  
_paper: _paper:10.1016/j.jallcom.2007.05.005:PrZn2  
_tdb: _tdb:PrZn-08Hua.tdb:PRZN2  


### TDB models of PRZN2 (1): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): PRZN2, type code %, sha256 `b69fb1ec5dd79bb6…`

~~~~text
53: PHASE PRZN2 % 2 1 2 !
54: CONST PRZN2 : PR : ZN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(66)90058-0](https://doi.org/10.1016/0022-5088%2866%2990058-0) D.J. Michel, E. Ryba, P.K. Kejriwal, Melting points of REZn2 intermetallic compounds, Journal of the Less Common Metals 11, 67-69 (1966).  
_cited as the source of values for this phase_

## PRZN2_HT (Pr–Zn)

- Id: `phase:pr-zn:przn2-ht`; status `needs_review`
- No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
- Candidate (dft_mp): Imma (74) — on-hull MP PrZn2 at x(ZN)=0.6667
- Candidate (dft_oqmd): Imma (74) — on-hull OQMD Pr1 Zn2 at x(ZN)=0.6667
- Candidate (literature_printed): (PrZn2) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (PrZn2) — Hallstedt 2025 mmc2 row for PRZN2_HT: PrZn2 (high T)
- Stoichiometry: Pr 0.3333, Zn 0.6667
- Stability: stable in 1 of 1 calculated diagram(s): 823.29–1171.54 K, x(Zn) 0.66667–0.66667
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:przn2-ht)

Names (4): _corpus: _corpus:phase:pr-zn:przn2-ht  
_paper: _paper:10.1016/j.jallcom.2007.03.120:PrZn2, paper:10.1016/j.jallcom.2007.03.120:βPrZn2  
_tdb: _tdb:PrZn-08Wan.tdb:PRZN2_HT  


### TDB models of PRZN2_HT (1): PHASE and CONSTITUENT statements as written

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): PRZN2_HT, type code %, sha256 `da6ba6c3a65fc781…`

~~~~text
58: PHASE PRZN2_HT % 2 1 2 !
59: CONST PRZN2_HT : PR : ZN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02811772](https://doi.org/10.1007/bf02811772) Irving Johnson, Robert M. Yonco, Thermodynamics of cadmium- and zinc-rich alloys in the Cd−La, Cd−Ce, Cd−Pr, Zn−La, Zn−Ce and Zn−Pr systems, Metall Trans 1, 905-910 (1970).  
_cited as the source of values for this phase_

## PRZN2_LT (Pr–Zn)

- Id: `phase:pr-zn:przn2-lt`; status `assigned`
- Structure: Hg2K · oI12 · Imma (74); type `st:hg2k-oi12`; 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: Pr 0.3333, Zn 0.6667
- Stability: stable in 1 of 1 calculated diagram(s): 300–823.29 K, x(Zn) 0.66667–0.66667
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:przn2-lt)

Names (3): _corpus: _corpus:phase:pr-zn:przn2-lt  
_paper: _paper:10.1016/j.jallcom.2007.03.120:αPrZn2  
_tdb: _tdb:PrZn-08Wan.tdb:PRZN2_LT  


### TDB models of PRZN2_LT (1): PHASE and CONSTITUENT statements as written

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): PRZN2_LT, type code %, sha256 `da6ba6c3a65fc781…`

~~~~text
53: PHASE PRZN2_LT % 2 1 2 !
54: CONST PRZN2_LT : PR : ZN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_

## PRZN3 (Pr–Zn)

- Id: `phase:pr-zn:przn3`; status `assigned`
- Structure: YZn3 · oP16 · Pnma (62); type `st:yzn3-op16`; 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: Pr 0.2500, Zn 0.7500
- Stability: stable in 2 of 2 calculated diagram(s): 300–1107.47 K, x(Zn) 0.75–0.75
- Literature: 10 values (10 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:pr-zn:przn3)

Names (5): _corpus: _corpus:phase:pr-zn:przn3  
_paper: _paper:10.1016/j.jallcom.2007.03.120:PrZn3, paper:10.1016/j.jallcom.2007.05.005:PrZn3  
_tdb: _tdb:PrZn-08Hua.tdb:PRZN3, tdb:PrZn-08Wan.tdb:PRZN3  


### TDB models of PRZN3 (2): PHASE and CONSTITUENT statements as written

[PrZn-08Hua.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Hua.tdb): PRZN3, type code %, sha256 `b69fb1ec5dd79bb6…`

~~~~text
58: PHASE PRZN3 % 2 1 3 !
59: CONST PRZN3 : PR : ZN : !
~~~~

[PrZn-08Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/PrZn-08Wan.tdb): PRZN3, type code %, sha256 `da6ba6c3a65fc781…`

~~~~text
63: PHASE PRZN3 % 2 1 3 !
64: CONST PRZN3 : PR : ZN : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.jallcom.2007.03.120](https://doi.org/10.1016/j.jallcom.2007.03.120) C.P. Wang, X. Chen, X.J. Liu, F.S. Pan, K. Ishida, Thermodynamic modeling of the Ce–Zn and Pr–Zn systems, Journal of Alloys and Compounds 458, 166-173 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2007.05.005](https://doi.org/10.1016/j.jallcom.2007.05.005) X.M. Huang, L.B. Liu, L.G. Zhang, B.R. Jia, Z.P. Jin, F. Zheng, Thermodynamic assessment of the Pr–Zn binary system, Journal of Alloys and Compounds 459, 191-195 (2008).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/bf02643424](https://doi.org/10.1007/bf02643424) J. T. Mason, P. Chiotti, Phase relations and crystallographic data for the Pr-Zn system, Metall Trans 1, 2119-2123 (1970).  
_cited as the source of values for this phase_
- [doi:10.1007/bf02664226](https://doi.org/10.1007/bf02664226) P. Chiotti, J. T. Mason, Thermodynamic properties of Pr-Zn alloys, Metall Trans 2, 967-973 (1971).  
_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).