# Mg–Zn phases

> Mg–Zn system: 12 phases (tier A 6, tier C 3, liquid 1, needs_review 2); 10 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references.

HTML: https://data.orchid-project.org/phases/pages/MG-ZN.html · Markdown: https://data.orchid-project.org/phases/pages/MG-ZN.md

12 phases (tier A 6, tier C 3, liquid 1, needs_review 2); 10 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: [interactive registry](https://orchid-project.org/phases/?q=MG-ZN) · [full JSON](https://data.orchid-project.org/phases/systems/MG-ZN.json) · [Mg–Zn system page](https://data.orchid-project.org/systems/MG-ZN.html) · [Markdown](https://data.orchid-project.org/phases/pages/MG-ZN.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Mg–Zn system (12)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [BCC_A2](#phase-mg-zn-bcc-a2); _phase:mg-zn:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | not stable in 6 calculated diagram(s) | 0 | 6 |
| [C14_LAVES](#phase-mg-zn-c14-laves); _phase:mg-zn:c14-laves_ | MgZn2 · C14 · hP12 · P6_3/mmc (194) | tier A: standard phase name | stable in 5 of 5 calculated diagram(s): 300–863.14 K, x(Zn) 0.65785–0.67132 | 13 | 5 |
| [FCC_A1](#phase-mg-zn-fcc-a1); _phase:mg-zn:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | not stable in 6 calculated diagram(s) | 0 | 6 |
| [HCP_A3](#phase-mg-zn-hcp-a3); _phase:mg-zn:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 6 of 6 calculated diagram(s): 300–2499.81 K, x(Zn) 0–1 | 17 | 6 |
| [LIQUID](#phase-mg-zn-liquid); _phase:mg-zn:liquid_ | liquid | liquid | stable in 6 of 6 calculated diagram(s): 612.07–2500 K, x(Zn) 0–1 | 40 | 6 |
| [MG12ZN13](#phase-mg-zn-mg12zn13); _phase:mg-zn:mg12zn13_ | Re25Zr21 · hR92 · R-3c (167) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 5 of 5 calculated diagram(s): 300–620.15 K, x(Zn) 0.52–0.52 | 18 | 5 |
| [MG2ZN11_D8C](#phase-mg-zn-mg2zn11-d8c); _phase:mg-zn:mg2zn11-d8c_ | Mg2Zn11 · D8_c · cP39 · Pm-3 (200) | tier A: standard phase name | stable in 6 of 6 calculated diagram(s): 300–658.61 K, x(Zn) 0.84615–0.84615 | 10 | 6 |
| [MG2ZN3](#phase-mg-zn-mg2zn3); _phase:mg-zn:mg2zn3_ | Mg4Zn7 · mC110 · C2/m (12) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 6 of 6 calculated diagram(s): 300–691.44 K, x(Zn) 0.6–0.6 | 19 | 6 |
| [MG51ZN20](#phase-mg-zn-mg51zn20); _phase:mg-zn:mg51zn20_ | Mg51Zn20 · oI158 · Immm (71) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 5 of 5 calculated diagram(s): 596.08–617.96 K, x(Zn) 0.28169–0.28169 | 16 | 5 |
| [MG7ZN3](#phase-mg-zn-mg7zn3); _phase:mg-zn:mg7zn3_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 590–614.2 K, x(Zn) 0.3–0.3 | 1 | 1 |
| [MGZN](#phase-mg-zn-mgzn); _phase:mg-zn:mgzn_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–620.2 K, x(Zn) 0.5–0.5 | 5 | 1 |
| [MGZN2_C14](#phase-mg-zn-mgzn2-c14); _phase:mg-zn:mgzn2-c14_ | MgZn2 · C14 · hP12 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–863.04 K, x(Zn) 0.66667–0.66667 | 0 | 1 |

## BCC_A2 (Mg–Zn)

- Id: `phase:mg-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: not stable in 6 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:bcc-a2)

Names (7): _corpus: _corpus:phase:mg-zn:bcc-a2  
_tdb: _tdb:MgZn-10Niu.tdb:BCC_A2, tdb:MgZn-14Yua.tdb:BCC_A2, tdb:MgZn-20Hay.tdb:BCC_A2, tdb:MgZn-22Li.tdb:BCC_A2, tdb:MgZn-92Aga.tdb:BCC_A2, tdb:MgZn-98Lia-LB.tdb:BCC_A2  


### TDB models of BCC_A2 (6): PHASE and CONSTITUENT statements as written

[MgZn-10Niu.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-10Niu.tdb): BCC_A2, type code %B, sha256 `ddf26e3ed256541c…`

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

[MgZn-14Yua.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-14Yua.tdb): BCC_A2, type code %B, sha256 `5c6bc30db874d0b1…`

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

[MgZn-20Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-20Hay.tdb): BCC_A2, type code %B, sha256 `01db9e45b19b39b0…`

~~~~text
34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : MG ZN : VA% : !
~~~~

[MgZn-22Li.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-22Li.tdb): BCC_A2, type code %B, sha256 `a63cd9424cb2e765…`

~~~~text
29: PHASE BCC_A2 %B 2 1 3 !
30: CONST BCC_A2 : MG ZN : VA% : !
~~~~

[MgZn-92Aga.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-92Aga.tdb): BCC_A2, type code %B, sha256 `ebd8b9262088fe02…`

~~~~text
38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : MG ZN : VA% : !
~~~~

[MgZn-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-98Lia-LB.tdb): BCC_A2, type code %B, sha256 `abe87ea1530de486…`

~~~~text
38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : MG ZN : VA% : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1016/j.calphad.2010.07.010](https://doi.org/10.1016/j.calphad.2010.07.010) Chunju Niu, Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Thermodynamic description on the miscibility gap of the Mg-based solid solution in the Mg–Zn, Mg–Nd and Mg–Zn–Nd systems, Calphad 34, 428-433 (2010).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2013.07.007](https://doi.org/10.1016/j.calphad.2013.07.007) Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2022.102479](https://doi.org/10.1016/j.calphad.2022.102479) X. Li, S. Liu, D. Huang, Y. Du, Calphad, 79, 102479(2022).  
_assessment that models this phase_
- [doi:10.1016/S0040-6031(97)00458-9](https://doi.org/10.1016/S0040-6031%2897%2900458-9) P. Liang, T. Tarfa, J.A. Robinson, S. Wagner, P. Ochin, M.G. Harmelin, H.J. Seifert, H.L. Lukas, F. Aldinger, Thermochim. Acta, 314, 87-110(1998).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1992-830402](https://doi.org/10.1515/ijmr-1992-830402) R. Agarwal, S.G. Fries, H.L. Lukas, G. Petzow, F. Sommer, T.G. Chart, G. Effenberg, Z. Metallkd., 83, 216-23(1992).  
_assessment that models this phase_
- [doi:10.2320/jinstmet.JBW201905](https://doi.org/10.2320/jinstmet.JBW201905) N. Hayashi, K. Nakashima, M. Enoki, H. Ohtani, J. Jpn. Inst. Met. Mater., 84, 141-50(2020).  
_assessment that models this phase_

## C14_LAVES (Mg–Zn)

- Id: `phase:mg-zn:c14-laves`; status `assigned`
- Structure: MgZn2 · C14 · hP12 · P6_3/mmc (194); type `st:c14-mgzn2-hp12`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in MgZn-10Niu.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in MgZn-14Yua.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in MgZn-20Hay.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in MgZn-22Li.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in MgZn-98Lia-LB.tdb also describes the disordered state
- Stability: stable in 5 of 5 calculated diagram(s): 300–863.14 K, x(Zn) 0.65785–0.67132
- Literature: 13 values (13 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:c14-laves)

Names (10): _corpus: _corpus:phase:mg-zn:c14-laves  
_paper: _paper:10.1016/j.calphad.2010.07.010:MgZn2, paper:10.1016/j.calphad.2013.07.007:Laves_C14, paper:sha256-85fd53a1a176b694:Laves-C14, paper:sha256-85fd53a1a176b694:MgZn2  
_tdb: _tdb:MgZn-10Niu.tdb:C14_LAVES, tdb:MgZn-14Yua.tdb:C14_LAVES, tdb:MgZn-20Hay.tdb:C14_LAVES, tdb:MgZn-22Li.tdb:C14_LAVES, tdb:MgZn-98Lia-LB.tdb:C14_LAVES  


### TDB models of C14_LAVES (5): PHASE and CONSTITUENT statements as written

[MgZn-10Niu.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-10Niu.tdb): C14_LAVES, type code %, sha256 `ddf26e3ed256541c…`

~~~~text
59: PHASE C14_LAVES % 2 2 1 !
60: CONST C14_LAVES : MG ZN% : MG% ZN : !
~~~~

[MgZn-14Yua.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-14Yua.tdb): C14_LAVES, type code %, sha256 `5c6bc30db874d0b1…`

~~~~text
62: PHASE C14_LAVES % 2 2 1 !
63: CONST C14_LAVES : MG ZN% : MG% ZN : !
~~~~

[MgZn-20Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-20Hay.tdb): C14_LAVES, type code %, sha256 `01db9e45b19b39b0…`

~~~~text
60: PHASE C14_LAVES % 2 2 1 !
61: CONST C14_LAVES : MG ZN% : MG% ZN : !
~~~~

[MgZn-22Li.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-22Li.tdb): C14_LAVES, type code %, sha256 `a63cd9424cb2e765…`

~~~~text
55: PHASE C14_LAVES % 2 2 1 !
56: CONST C14_LAVES : MG ZN% : MG% ZN : !
~~~~

[MgZn-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-98Lia-LB.tdb): C14_LAVES, type code %, sha256 `abe87ea1530de486…`

~~~~text
64: PHASE C14_LAVES % 2 2 1 !
65: CONST C14_LAVES : MG ZN% : MG% ZN : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.calphad.2013.07.007](https://doi.org/10.1016/j.calphad.2013.07.007) Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2010.07.010](https://doi.org/10.1016/j.calphad.2010.07.010) Chunju Niu, Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Thermodynamic description on the miscibility gap of the Mg-based solid solution in the Mg–Zn, Mg–Nd and Mg–Zn–Nd systems, Calphad 34, 428-433 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0040-6031(97)00458-9](https://doi.org/10.1016/S0040-6031%2897%2900458-9) P. Liang, T. Tarfa, J.A. Robinson, S. Wagner, P. Ochin, M.G. Harmelin, H.J. Seifert, H.L. Lukas, F. Aldinger, Thermochim. Acta, 314, 87-110(1998).  
_assessment that models this phase; cited as the source of values for this phase_
- [doi:10.1016/j.calphad.2022.102479](https://doi.org/10.1016/j.calphad.2022.102479) X. Li, S. Liu, D. Huang, Y. Du, Calphad, 79, 102479(2022).  
_assessment that models this phase_
- [doi:10.2320/jinstmet.JBW201905](https://doi.org/10.2320/jinstmet.JBW201905) N. Hayashi, K. Nakashima, M. Enoki, H. Ohtani, J. Jpn. Inst. Met. Mater., 84, 141-50(2020).  
_assessment that models this phase_

## FCC_A1 (Mg–Zn)

- Id: `phase:mg-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: not stable in 6 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:fcc-a1)

Names (7): _corpus: _corpus:phase:mg-zn:fcc-a1  
_tdb: _tdb:MgZn-10Niu.tdb:FCC_A1, tdb:MgZn-14Yua.tdb:FCC_A1, tdb:MgZn-20Hay.tdb:FCC_A1, tdb:MgZn-22Li.tdb:FCC_A1, tdb:MgZn-92Aga.tdb:FCC_A1, tdb:MgZn-98Lia-LB.tdb:FCC_A1  


### TDB models of FCC_A1 (6): PHASE and CONSTITUENT statements as written

[MgZn-10Niu.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-10Niu.tdb): FCC_A1, type code %A, sha256 `ddf26e3ed256541c…`

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

[MgZn-14Yua.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-14Yua.tdb): FCC_A1, type code %A, sha256 `5c6bc30db874d0b1…`

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

[MgZn-20Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-20Hay.tdb): FCC_A1, type code %A, sha256 `01db9e45b19b39b0…`

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

[MgZn-22Li.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-22Li.tdb): FCC_A1, type code %A, sha256 `a63cd9424cb2e765…`

~~~~text
24: PHASE FCC_A1 %A 2 1 1 !
25: CONST FCC_A1 : MG ZN : VA% : !
~~~~

[MgZn-92Aga.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-92Aga.tdb): FCC_A1, type code %A, sha256 `ebd8b9262088fe02…`

~~~~text
33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : MG ZN : VA% : !
~~~~

[MgZn-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-98Lia-LB.tdb): FCC_A1, type code %A, sha256 `abe87ea1530de486…`

~~~~text
33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : MG ZN : VA% : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1016/j.calphad.2010.07.010](https://doi.org/10.1016/j.calphad.2010.07.010) Chunju Niu, Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Thermodynamic description on the miscibility gap of the Mg-based solid solution in the Mg–Zn, Mg–Nd and Mg–Zn–Nd systems, Calphad 34, 428-433 (2010).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2013.07.007](https://doi.org/10.1016/j.calphad.2013.07.007) Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).  
_assessment that models this phase_
- [doi:10.1016/j.calphad.2022.102479](https://doi.org/10.1016/j.calphad.2022.102479) X. Li, S. Liu, D. Huang, Y. Du, Calphad, 79, 102479(2022).  
_assessment that models this phase_
- [doi:10.1016/S0040-6031(97)00458-9](https://doi.org/10.1016/S0040-6031%2897%2900458-9) P. Liang, T. Tarfa, J.A. Robinson, S. Wagner, P. Ochin, M.G. Harmelin, H.J. Seifert, H.L. Lukas, F. Aldinger, Thermochim. Acta, 314, 87-110(1998).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1992-830402](https://doi.org/10.1515/ijmr-1992-830402) R. Agarwal, S.G. Fries, H.L. Lukas, G. Petzow, F. Sommer, T.G. Chart, G. Effenberg, Z. Metallkd., 83, 216-23(1992).  
_assessment that models this phase_
- [doi:10.2320/jinstmet.JBW201905](https://doi.org/10.2320/jinstmet.JBW201905) N. Hayashi, K. Nakashima, M. Enoki, H. Ohtani, J. Jpn. Inst. Met. Mater., 84, 141-50(2020).  
_assessment that models this phase_

## HCP_A3 (Mg–Zn)

- Id: `phase:mg-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 6 of 6 calculated diagram(s): 300–2499.81 K, x(Zn) 0–1
- Literature: 17 values (15 accepted) from 4 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:hcp-a3)

Names (12): _corpus: _corpus:phase:mg-zn:hcp-a3  
_paper: _paper:10.1016/j.calphad.2010.07.010:hcp_A3, paper:10.1016/j.calphad.2013.07.007:(Mg), paper:10.1016/j.calphad.2013.07.007:(Zn), paper:10.1016/j.jallcom.2010.08.124:hcp(Mg), paper:sha256-85fd53a1a176b694:hcp-A3  
_tdb: _tdb:MgZn-10Niu.tdb:HCP_A3, tdb:MgZn-14Yua.tdb:HCP_A3, tdb:MgZn-20Hay.tdb:HCP_A3, tdb:MgZn-22Li.tdb:HCP_A3, tdb:MgZn-92Aga.tdb:HCP_A3, tdb:MgZn-98Lia-LB.tdb:HCP_A3  


### TDB models of HCP_A3 (6): PHASE and CONSTITUENT statements as written

[MgZn-10Niu.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-10Niu.tdb): HCP_A3, type code %A, sha256 `ddf26e3ed256541c…`

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

[MgZn-14Yua.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-14Yua.tdb): HCP_A3, type code %A, sha256 `5c6bc30db874d0b1…`

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

[MgZn-20Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-20Hay.tdb): HCP_A3, type code %A, sha256 `01db9e45b19b39b0…`

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

[MgZn-22Li.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-22Li.tdb): HCP_A3, type code %A, sha256 `a63cd9424cb2e765…`

~~~~text
34: PHASE HCP_A3 %A 2 1 0.5 !
35: CONST HCP_A3 : MG% ZN : VA% : !
~~~~

[MgZn-92Aga.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-92Aga.tdb): HCP_A3, type code %A, sha256 `ebd8b9262088fe02…`

~~~~text
43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : MG% ZN : VA% : !
~~~~

[MgZn-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-98Lia-LB.tdb): HCP_A3, type code %A, sha256 `abe87ea1530de486…`

~~~~text
43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : MG% ZN : VA% : !
~~~~

Example references (7 of 7; assessments first): 

- [doi:10.1016/j.calphad.2010.07.010](https://doi.org/10.1016/j.calphad.2010.07.010) Chunju Niu, Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Thermodynamic description on the miscibility gap of the Mg-based solid solution in the Mg–Zn, Mg–Nd and Mg–Zn–Nd systems, Calphad 34, 428-433 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2013.07.007](https://doi.org/10.1016/j.calphad.2013.07.007) Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0040-6031(97)00458-9](https://doi.org/10.1016/S0040-6031%2897%2900458-9) P. Liang, T. Tarfa, J.A. Robinson, S. Wagner, P. Ochin, M.G. Harmelin, H.J. Seifert, H.L. Lukas, F. Aldinger, Thermochim. Acta, 314, 87-110(1998).  
_assessment that models this phase; cited as the source of values for this phase_
- [doi:10.1016/j.calphad.2022.102479](https://doi.org/10.1016/j.calphad.2022.102479) X. Li, S. Liu, D. Huang, Y. Du, Calphad, 79, 102479(2022).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1992-830402](https://doi.org/10.1515/ijmr-1992-830402) R. Agarwal, S.G. Fries, H.L. Lukas, G. Petzow, F. Sommer, T.G. Chart, G. Effenberg, Z. Metallkd., 83, 216-23(1992).  
_assessment that models this phase_
- [doi:10.2320/jinstmet.JBW201905](https://doi.org/10.2320/jinstmet.JBW201905) N. Hayashi, K. Nakashima, M. Enoki, H. Ohtani, J. Jpn. Inst. Met. Mater., 84, 141-50(2020).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2010.08.124](https://doi.org/10.1016/j.jallcom.2010.08.124) F.G. Meng, J. Wang, L.B. Liu, Z.P. Jin, Thermodynamic modeling of the Mg–Sn–Zn ternary system, Journal of Alloys and Compounds 508, 570-581 (2010).  
_reports values for this phase_

## LIQUID (Mg–Zn)

- Id: `phase:mg-zn:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 6 of 6 calculated diagram(s): 612.07–2500 K, x(Zn) 0–1
- Literature: 40 values (34 accepted) from 5 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:liquid)

Names (12): _corpus: _corpus:phase:mg-zn:liquid  
_paper: _paper:10.1016/j.calphad.2010.07.010:Liquid, paper:10.1016/j.calphad.2013.07.007:L, paper:10.1016/j.jallcom.2010.08.124:L, paper:10.2320/jinstmet.jbw201905:L, paper:sha256-85fd53a1a176b694:Liquid  
_tdb: _tdb:MgZn-10Niu.tdb:LIQUID, tdb:MgZn-14Yua.tdb:LIQUID, tdb:MgZn-20Hay.tdb:LIQUID, tdb:MgZn-22Li.tdb:LIQUID, tdb:MgZn-92Aga.tdb:LIQUID, tdb:MgZn-98Lia-LB.tdb:LIQUID  


### TDB models of LIQUID (6): PHASE and CONSTITUENT statements as written

[MgZn-10Niu.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-10Niu.tdb): LIQUID, type code %, sha256 `ddf26e3ed256541c…`

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

[MgZn-14Yua.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-14Yua.tdb): LIQUID, type code %, sha256 `5c6bc30db874d0b1…`

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

[MgZn-20Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-20Hay.tdb): LIQUID, type code %, sha256 `01db9e45b19b39b0…`

~~~~text
24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : MG ZN : !
~~~~

[MgZn-22Li.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-22Li.tdb): LIQUID, type code %, sha256 `a63cd9424cb2e765…`

~~~~text
19: PHASE LIQUID:L % 1 1 !
20: CONST LIQUID:L : MG ZN : !
~~~~

[MgZn-92Aga.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-92Aga.tdb): LIQUID, type code %, sha256 `ebd8b9262088fe02…`

~~~~text
28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : MG ZN : !
~~~~

[MgZn-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-98Lia-LB.tdb): LIQUID, type code %, sha256 `abe87ea1530de486…`

~~~~text
28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : MG ZN : !
~~~~

Example references (7 of 7; assessments first): 

- [doi:10.1016/j.calphad.2013.07.007](https://doi.org/10.1016/j.calphad.2013.07.007) Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2010.07.010](https://doi.org/10.1016/j.calphad.2010.07.010) Chunju Niu, Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Thermodynamic description on the miscibility gap of the Mg-based solid solution in the Mg–Zn, Mg–Nd and Mg–Zn–Nd systems, Calphad 34, 428-433 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0040-6031(97)00458-9](https://doi.org/10.1016/S0040-6031%2897%2900458-9) P. Liang, T. Tarfa, J.A. Robinson, S. Wagner, P. Ochin, M.G. Harmelin, H.J. Seifert, H.L. Lukas, F. Aldinger, Thermochim. Acta, 314, 87-110(1998).  
_assessment that models this phase; cited as the source of values for this phase_
- [doi:10.2320/jinstmet.JBW201905](https://doi.org/10.2320/jinstmet.JBW201905) N. Hayashi, K. Nakashima, M. Enoki, H. Ohtani, J. Jpn. Inst. Met. Mater., 84, 141-50(2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2022.102479](https://doi.org/10.1016/j.calphad.2022.102479) X. Li, S. Liu, D. Huang, Y. Du, Calphad, 79, 102479(2022).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1992-830402](https://doi.org/10.1515/ijmr-1992-830402) R. Agarwal, S.G. Fries, H.L. Lukas, G. Petzow, F. Sommer, T.G. Chart, G. Effenberg, Z. Metallkd., 83, 216-23(1992).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2010.08.124](https://doi.org/10.1016/j.jallcom.2010.08.124) F.G. Meng, J. Wang, L.B. Liu, Z.P. Jin, Thermodynamic modeling of the Mg–Sn–Zn ternary system, Journal of Alloys and Compounds 508, 570-581 (2010).  
_reports values for this phase_

## MG12ZN13 (Mg–Zn)

- Id: `phase:mg-zn:mg12zn13`; status `assigned`
- Structure: Re25Zr21 · hR92 · R-3c (167); type `st:re25zr21-hr92`; 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: Mg 0.4800, Zn 0.5200
- Stability: stable in 5 of 5 calculated diagram(s): 300–620.15 K, x(Zn) 0.52–0.52
- Literature: 18 values (14 accepted) from 4 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:mg12zn13)

Names (10): _corpus: _corpus:phase:mg-zn:mg12zn13  
_paper: _paper:10.1016/j.calphad.2010.07.010:MgZn, paper:10.1016/j.calphad.2013.07.007:Mg12Zn13, paper:10.2320/jinstmet.jbw201905:Mg12Zn13, paper:sha256-85fd53a1a176b694:MgZn  
_tdb: _tdb:MgZn-10Niu.tdb:MG12ZN13, tdb:MgZn-14Yua.tdb:MG12ZN13, tdb:MgZn-20Hay.tdb:MG12ZN13, tdb:MgZn-22Li.tdb:MG12ZN13, tdb:MgZn-98Lia-LB.tdb:MG12ZN13  


### TDB models of MG12ZN13 (5): PHASE and CONSTITUENT statements as written

[MgZn-10Niu.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-10Niu.tdb): MG12ZN13, type code %, sha256 `ddf26e3ed256541c…`

~~~~text
49: PHASE MG12ZN13 % 2 12 13 !
50: CONST MG12ZN13 : MG : ZN : !
~~~~

[MgZn-14Yua.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-14Yua.tdb): MG12ZN13, type code %, sha256 `5c6bc30db874d0b1…`

~~~~text
52: PHASE MG12ZN13 % 2 12 13 !
53: CONST MG12ZN13 : MG : ZN : !
~~~~

[MgZn-20Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-20Hay.tdb): MG12ZN13, type code %, sha256 `01db9e45b19b39b0…`

~~~~text
50: PHASE MG12ZN13 % 2 12 13 !
51: CONST MG12ZN13 : MG : ZN : !
~~~~

[MgZn-22Li.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-22Li.tdb): MG12ZN13, type code %, sha256 `a63cd9424cb2e765…`

~~~~text
45: PHASE MG12ZN13 % 2 12 13 !
46: CONST MG12ZN13 : MG : ZN : !
~~~~

[MgZn-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-98Lia-LB.tdb): MG12ZN13, type code %, sha256 `abe87ea1530de486…`

~~~~text
54: PHASE MG12ZN13 % 2 12 13 !
55: CONST MG12ZN13 : MG : ZN : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.calphad.2010.07.010](https://doi.org/10.1016/j.calphad.2010.07.010) Chunju Niu, Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Thermodynamic description on the miscibility gap of the Mg-based solid solution in the Mg–Zn, Mg–Nd and Mg–Zn–Nd systems, Calphad 34, 428-433 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2013.07.007](https://doi.org/10.1016/j.calphad.2013.07.007) Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0040-6031(97)00458-9](https://doi.org/10.1016/S0040-6031%2897%2900458-9) P. Liang, T. Tarfa, J.A. Robinson, S. Wagner, P. Ochin, M.G. Harmelin, H.J. Seifert, H.L. Lukas, F. Aldinger, Thermochim. Acta, 314, 87-110(1998).  
_assessment that models this phase; cited as the source of values for this phase_
- [doi:10.2320/jinstmet.JBW201905](https://doi.org/10.2320/jinstmet.JBW201905) N. Hayashi, K. Nakashima, M. Enoki, H. Ohtani, J. Jpn. Inst. Met. Mater., 84, 141-50(2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2022.102479](https://doi.org/10.1016/j.calphad.2022.102479) X. Li, S. Liu, D. Huang, Y. Du, Calphad, 79, 102479(2022).  
_assessment that models this phase_

## MG2ZN11_D8C (Mg–Zn)

- Id: `phase:mg-zn:mg2zn11-d8c`; status `assigned`
- Structure: Mg2Zn11 · D8_c · cP39 · Pm-3 (200); type `st:d8-c-mg2zn11-cp39`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaabtoa and oqmd-17667, space group 200
- Stoichiometry: Mg 0.1538, Zn 0.8462
- Stability: stable in 6 of 6 calculated diagram(s): 300–658.61 K, x(Zn) 0.84615–0.84615
- Literature: 10 values (10 accepted) from 3 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:mg2zn11-d8c)

Names (12): _corpus: _corpus:phase:mg-zn:mg2zn11-d8c  
_mp: _mp:mp-aaaabtoa  
_oqmd: _oqmd:oqmd-17667  
_paper: _paper:10.1016/j.calphad.2010.07.010:Mg2Zn11, paper:10.1016/j.calphad.2013.07.007:Mg2Zn11, paper:sha256-85fd53a1a176b694:Mg2Zn11  
_tdb: _tdb:MgZn-10Niu.tdb:MG2ZN11_D8C, tdb:MgZn-14Yua.tdb:MG2ZN11_D8C, tdb:MgZn-20Hay.tdb:MG2ZN11_D8C, tdb:MgZn-22Li.tdb:MG2ZN11_D8C, tdb:MgZn-92Aga.tdb:MG2ZN11_D8C, tdb:MgZn-98Lia-LB.tdb:MG2ZN11_D8C  


### TDB models of MG2ZN11_D8C (6): PHASE and CONSTITUENT statements as written

[MgZn-10Niu.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-10Niu.tdb): MG2ZN11_D8C, type code %, sha256 `ddf26e3ed256541c…`

~~~~text
64: PHASE MG2ZN11_D8C % 2 2 11 !
65: CONST MG2ZN11_D8C : MG : ZN : !
~~~~

[MgZn-14Yua.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-14Yua.tdb): MG2ZN11_D8C, type code %, sha256 `5c6bc30db874d0b1…`

~~~~text
67: PHASE MG2ZN11_D8C % 2 2 11 !
68: CONST MG2ZN11_D8C : MG : ZN : !
~~~~

[MgZn-20Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-20Hay.tdb): MG2ZN11_D8C, type code %, sha256 `01db9e45b19b39b0…`

~~~~text
65: PHASE MG2ZN11_D8C % 2 2 11 !
66: CONST MG2ZN11_D8C : MG : ZN : !
~~~~

[MgZn-22Li.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-22Li.tdb): MG2ZN11_D8C, type code %, sha256 `a63cd9424cb2e765…`

~~~~text
60: PHASE MG2ZN11_D8C % 2 2 11 !
61: CONST MG2ZN11_D8C : MG : ZN : !
~~~~

[MgZn-92Aga.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-92Aga.tdb): MG2ZN11_D8C, type code %, sha256 `ebd8b9262088fe02…`

~~~~text
69: PHASE MG2ZN11_D8C % 2 2 11 !
70: CONST MG2ZN11_D8C : MG : ZN : !
~~~~

[MgZn-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-98Lia-LB.tdb): MG2ZN11_D8C, type code %, sha256 `abe87ea1530de486…`

~~~~text
69: PHASE MG2ZN11_D8C % 2 2 11 !
70: CONST MG2ZN11_D8C : MG : ZN : !
~~~~

Example references (6 of 6; assessments first): 

- [doi:10.1016/j.calphad.2010.07.010](https://doi.org/10.1016/j.calphad.2010.07.010) Chunju Niu, Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Thermodynamic description on the miscibility gap of the Mg-based solid solution in the Mg–Zn, Mg–Nd and Mg–Zn–Nd systems, Calphad 34, 428-433 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2013.07.007](https://doi.org/10.1016/j.calphad.2013.07.007) Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0040-6031(97)00458-9](https://doi.org/10.1016/S0040-6031%2897%2900458-9) P. Liang, T. Tarfa, J.A. Robinson, S. Wagner, P. Ochin, M.G. Harmelin, H.J. Seifert, H.L. Lukas, F. Aldinger, Thermochim. Acta, 314, 87-110(1998).  
_assessment that models this phase; cited as the source of values for this phase_
- [doi:10.1016/j.calphad.2022.102479](https://doi.org/10.1016/j.calphad.2022.102479) X. Li, S. Liu, D. Huang, Y. Du, Calphad, 79, 102479(2022).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1992-830402](https://doi.org/10.1515/ijmr-1992-830402) R. Agarwal, S.G. Fries, H.L. Lukas, G. Petzow, F. Sommer, T.G. Chart, G. Effenberg, Z. Metallkd., 83, 216-23(1992).  
_assessment that models this phase_
- [doi:10.2320/jinstmet.JBW201905](https://doi.org/10.2320/jinstmet.JBW201905) N. Hayashi, K. Nakashima, M. Enoki, H. Ohtani, J. Jpn. Inst. Met. Mater., 84, 141-50(2020).  
_assessment that models this phase_

## MG2ZN3 (Mg–Zn)

- Id: `phase:mg-zn:mg2zn3`; status `assigned`
- Structure: Mg4Zn7 · mC110 · C2/m (12); type `st:mg4zn7-mc110`; 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: Mg 0.4000, Zn 0.6000
- Stability: stable in 6 of 6 calculated diagram(s): 300–691.44 K, x(Zn) 0.6–0.6
- Literature: 19 values (17 accepted) from 5 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:mg2zn3)

Names (12): _corpus: _corpus:phase:mg-zn:mg2zn3  
_paper: _paper:10.1016/j.actamat.2015.02.044:Mg2Zn3, paper:10.1016/j.calphad.2006.03.005:Mg2Zn3, paper:10.1016/j.calphad.2010.07.010:Mg2Zn3, paper:10.1016/j.calphad.2013.07.007:Mg2Zn3, paper:sha256-85fd53a1a176b694:Mg2Zn3  
_tdb: _tdb:MgZn-10Niu.tdb:MG2ZN3, tdb:MgZn-14Yua.tdb:MG2ZN3, tdb:MgZn-20Hay.tdb:MG2ZN3, tdb:MgZn-22Li.tdb:MG2ZN3, tdb:MgZn-92Aga.tdb:MG2ZN3, tdb:MgZn-98Lia-LB.tdb:MG2ZN3  


### TDB models of MG2ZN3 (6): PHASE and CONSTITUENT statements as written

[MgZn-10Niu.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-10Niu.tdb): MG2ZN3, type code %, sha256 `ddf26e3ed256541c…`

~~~~text
54: PHASE MG2ZN3 % 2 2 3 !
55: CONST MG2ZN3 : MG : ZN : !
~~~~

[MgZn-14Yua.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-14Yua.tdb): MG2ZN3, type code %, sha256 `5c6bc30db874d0b1…`

~~~~text
57: PHASE MG2ZN3 % 2 2 3 !
58: CONST MG2ZN3 : MG : ZN : !
~~~~

[MgZn-20Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-20Hay.tdb): MG2ZN3, type code %, sha256 `01db9e45b19b39b0…`

~~~~text
55: PHASE MG2ZN3 % 2 2 3 !
56: CONST MG2ZN3 : MG : ZN : !
~~~~

[MgZn-22Li.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-22Li.tdb): MG2ZN3, type code %, sha256 `a63cd9424cb2e765…`

~~~~text
50: PHASE MG2ZN3 % 2 2 3 !
51: CONST MG2ZN3 : MG : ZN : !
~~~~

[MgZn-92Aga.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-92Aga.tdb): MG2ZN3, type code %, sha256 `ebd8b9262088fe02…`

~~~~text
59: PHASE MG2ZN3 % 2 2 3 !
60: CONST MG2ZN3 : MG : ZN : !
~~~~

[MgZn-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-98Lia-LB.tdb): MG2ZN3, type code %, sha256 `abe87ea1530de486…`

~~~~text
59: PHASE MG2ZN3 % 2 2 3 !
60: CONST MG2ZN3 : MG : ZN : !
~~~~

Example references (10 of 12; assessments first): 

- [doi:10.1016/j.calphad.2013.07.007](https://doi.org/10.1016/j.calphad.2013.07.007) Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2010.07.010](https://doi.org/10.1016/j.calphad.2010.07.010) Chunju Niu, Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Thermodynamic description on the miscibility gap of the Mg-based solid solution in the Mg–Zn, Mg–Nd and Mg–Zn–Nd systems, Calphad 34, 428-433 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0040-6031(97)00458-9](https://doi.org/10.1016/S0040-6031%2897%2900458-9) P. Liang, T. Tarfa, J.A. Robinson, S. Wagner, P. Ochin, M.G. Harmelin, H.J. Seifert, H.L. Lukas, F. Aldinger, Thermochim. Acta, 314, 87-110(1998).  
_assessment that models this phase; cited as the source of values for this phase_
- [doi:10.1016/j.calphad.2022.102479](https://doi.org/10.1016/j.calphad.2022.102479) X. Li, S. Liu, D. Huang, Y. Du, Calphad, 79, 102479(2022).  
_assessment that models this phase_
- [doi:10.1515/ijmr-1992-830402](https://doi.org/10.1515/ijmr-1992-830402) R. Agarwal, S.G. Fries, H.L. Lukas, G. Petzow, F. Sommer, T.G. Chart, G. Effenberg, Z. Metallkd., 83, 216-23(1992).  
_assessment that models this phase_
- [doi:10.2320/jinstmet.JBW201905](https://doi.org/10.2320/jinstmet.JBW201905) N. Hayashi, K. Nakashima, M. Enoki, H. Ohtani, J. Jpn. Inst. Met. Mater., 84, 141-50(2020).  
_assessment that models this phase_
- [doi:10.1007/bf02651927](https://doi.org/10.1007/bf02651927) Z. P. Luo, H. X. Sui, S. Q. Zhang, On the stable Mg-Zn-Y quasicrystals, Metall Mater Trans A 27, 1779-1784 (1996).  
_cited as the source of values for this phase_
- [doi:10.1016/j.actamat.2015.02.044](https://doi.org/10.1016/j.actamat.2015.02.044) Joachim Gröbner, Artem Kozlov, Xi-Ya Fang, Suming Zhu, Jian-Feng Nie, Mark A. Gibson et al., Phase equilibria and transformations in ternary Mg–Gd–Zn alloys, Acta Materialia 90, 400-416 (2015).  
_reports values for this phase_
- [doi:10.1016/j.calphad.2006.03.005](https://doi.org/10.1016/j.calphad.2006.03.005) G. Shao, V. Varsani, Z. Fan, Thermodynamic modelling of the Y–Zn and Mg–Zn–Y systems, Calphad 30, 286-295 (2006).  
_reports values for this phase_
- [doi:10.1016/j.calphad.2012.01.006](https://doi.org/10.1016/j.calphad.2012.01.006) R. Schmid-Fetzer, B. Hallstedt, Calphad 37 (2012) 34.  
_cited as the source of values for this phase_

## MG51ZN20 (Mg–Zn)

- Id: `phase:mg-zn:mg51zn20`; status `assigned`
- Structure: Mg51Zn20 · oI158 · Immm (71); type `st:mg51zn20-oi158`; 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: Mg 0.7183, Zn 0.2817
- Stability: stable in 5 of 5 calculated diagram(s): 596.08–617.96 K, x(Zn) 0.28169–0.28169
- Literature: 16 values (12 accepted) from 4 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:mg51zn20)

Names (10): _corpus: _corpus:phase:mg-zn:mg51zn20  
_paper: _paper:10.1016/j.calphad.2010.07.010:Mg7Zn3, paper:10.1016/j.calphad.2013.07.007:Mg51Zn20, paper:10.2320/jinstmet.jbw201905:Mg51Zn20, paper:sha256-85fd53a1a176b694:Mg51Zn20  
_tdb: _tdb:MgZn-10Niu.tdb:MG51ZN20, tdb:MgZn-14Yua.tdb:MG51ZN20, tdb:MgZn-20Hay.tdb:MG51ZN20, tdb:MgZn-22Li.tdb:MG51ZN20, tdb:MgZn-98Lia-LB.tdb:MG51ZN20  


### TDB models of MG51ZN20 (5): PHASE and CONSTITUENT statements as written

[MgZn-10Niu.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-10Niu.tdb): MG51ZN20, type code %, sha256 `ddf26e3ed256541c…`

~~~~text
44: PHASE MG51ZN20 % 2 51 20 !
45: CONST MG51ZN20 : MG : ZN : !
~~~~

[MgZn-14Yua.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-14Yua.tdb): MG51ZN20, type code %, sha256 `5c6bc30db874d0b1…`

~~~~text
47: PHASE MG51ZN20 % 2 51 20 !
48: CONST MG51ZN20 : MG : ZN : !
~~~~

[MgZn-20Hay.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-20Hay.tdb): MG51ZN20, type code %, sha256 `01db9e45b19b39b0…`

~~~~text
45: PHASE MG51ZN20 % 2 51 20 !
46: CONST MG51ZN20 : MG : ZN : !
~~~~

[MgZn-22Li.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-22Li.tdb): MG51ZN20, type code %, sha256 `a63cd9424cb2e765…`

~~~~text
40: PHASE MG51ZN20 % 2 51 20 !
41: CONST MG51ZN20 : MG : ZN : !
~~~~

[MgZn-98Lia-LB.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-98Lia-LB.tdb): MG51ZN20, type code %, sha256 `abe87ea1530de486…`

~~~~text
49: PHASE MG51ZN20 % 2 51 20 !
50: CONST MG51ZN20 : MG : ZN : !
~~~~

Example references (5 of 5; assessments first): 

- [doi:10.1016/j.calphad.2010.07.010](https://doi.org/10.1016/j.calphad.2010.07.010) Chunju Niu, Miao Liu, Changrong Li, Zhenmin Du, Cuiping Guo, Thermodynamic description on the miscibility gap of the Mg-based solid solution in the Mg–Zn, Mg–Nd and Mg–Zn–Nd systems, Calphad 34, 428-433 (2010).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2013.07.007](https://doi.org/10.1016/j.calphad.2013.07.007) Yuan Yuan, Fusheng Pan, Dajian Li, Andrew Watson, The re-assessment of the Mg–Zn and Fe–Si systems and their incorporation in thermodynamic descriptions of the Al–Mg–Zn and Fe–Si–Zn systems, Calphad 44, 54-61 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/S0040-6031(97)00458-9](https://doi.org/10.1016/S0040-6031%2897%2900458-9) P. Liang, T. Tarfa, J.A. Robinson, S. Wagner, P. Ochin, M.G. Harmelin, H.J. Seifert, H.L. Lukas, F. Aldinger, Thermochim. Acta, 314, 87-110(1998).  
_assessment that models this phase; cited as the source of values for this phase_
- [doi:10.2320/jinstmet.JBW201905](https://doi.org/10.2320/jinstmet.JBW201905) N. Hayashi, K. Nakashima, M. Enoki, H. Ohtani, J. Jpn. Inst. Met. Mater., 84, 141-50(2020).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.calphad.2022.102479](https://doi.org/10.1016/j.calphad.2022.102479) X. Li, S. Liu, D. Huang, Y. Du, Calphad, 79, 102479(2022).  
_assessment that models this phase_

## MG7ZN3 (Mg–Zn)

- Id: `phase:mg-zn:mg7zn3`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token
- Candidate (tdb_comment): Mg51Zn20 · oI158 · Immm — MgZn-92Aga.tdb: 'Prototype Mg51Zn20 (oI158, Immm)'
- Stoichiometry: Mg 0.7000, Zn 0.3000
- Stability: stable in 1 of 1 calculated diagram(s): 590–614.2 K, x(Zn) 0.3–0.3
- Literature: 1 values (1 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:mg7zn3)

Names (3): _corpus: _corpus:phase:mg-zn:mg7zn3  
_paper: _paper:10.1016/j.jallcom.2010.08.124:Mg7Zn3  
_tdb: _tdb:MgZn-92Aga.tdb:MG7ZN3  


### TDB models of MG7ZN3 (1): PHASE and CONSTITUENT statements as written

[MgZn-92Aga.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-92Aga.tdb): MG7ZN3, type code %, sha256 `ebd8b9262088fe02…`

~~~~text
49: PHASE MG7ZN3 % 2 7 3 !
50: CONST MG7ZN3 : MG : ZN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1515/ijmr-1992-830402](https://doi.org/10.1515/ijmr-1992-830402) R. Agarwal, S.G. Fries, H.L. Lukas, G. Petzow, F. Sommer, T.G. Chart, G. Effenberg, Z. Metallkd., 83, 216-23(1992).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2010.08.124](https://doi.org/10.1016/j.jallcom.2010.08.124) F.G. Meng, J. Wang, L.B. Liu, Z.P. Jin, Thermodynamic modeling of the Mg–Sn–Zn ternary system, Journal of Alloys and Compounds 508, 570-581 (2010).  
_reports values for this phase_

## MGZN (Mg–Zn)

- Id: `phase:mg-zn:mgzn`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token
- Candidate (tdb_comment): Re25Zr21 · hR92 · R-3c — MgZn-92Aga.tdb: 'Prototype Re25Zr21 (hR92, R-3c)'
- Stoichiometry: Mg 0.5000, Zn 0.5000
- Stability: stable in 1 of 1 calculated diagram(s): 300–620.2 K, x(Zn) 0.5–0.5
- Literature: 5 values (5 accepted) from 2 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:mgzn)

Names (4): _corpus: _corpus:phase:mg-zn:mgzn  
_paper: _paper:10.1016/j.actamat.2015.02.044:MgZn, paper:10.1016/j.jallcom.2010.08.124:MgZn  
_tdb: _tdb:MgZn-92Aga.tdb:MGZN  


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

[MgZn-92Aga.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-92Aga.tdb): MGZN, type code %, sha256 `ebd8b9262088fe02…`

~~~~text
54: PHASE MGZN % 2 1 1 !
55: CONST MGZN : MG : ZN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1515/ijmr-1992-830402](https://doi.org/10.1515/ijmr-1992-830402) R. Agarwal, S.G. Fries, H.L. Lukas, G. Petzow, F. Sommer, T.G. Chart, G. Effenberg, Z. Metallkd., 83, 216-23(1992).  
_assessment that models this phase_
- [doi:10.1016/j.actamat.2015.02.044](https://doi.org/10.1016/j.actamat.2015.02.044) Joachim Gröbner, Artem Kozlov, Xi-Ya Fang, Suming Zhu, Jian-Feng Nie, Mark A. Gibson et al., Phase equilibria and transformations in ternary Mg–Gd–Zn alloys, Acta Materialia 90, 400-416 (2015).  
_reports values for this phase_
- [doi:10.1016/j.jallcom.2010.08.124](https://doi.org/10.1016/j.jallcom.2010.08.124) F.G. Meng, J. Wang, L.B. Liu, Z.P. Jin, Thermodynamic modeling of the Mg–Sn–Zn ternary system, Journal of Alloys and Compounds 508, 570-581 (2010).  
_reports values for this phase_

## MGZN2_C14 (Mg–Zn)

- Id: `phase:mg-zn:mgzn2-c14`; status `assigned`
- Structure: MgZn2 · C14 · hP12 · P6_3/mmc (194); type `st:c14-mgzn2-hp12`; tier A: standard phase name; confidence high
- Stoichiometry: Mg 0.3333, Zn 0.6667
- Stability: stable in 1 of 1 calculated diagram(s): 300–863.04 K, x(Zn) 0.66667–0.66667
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:mg-zn:mgzn2-c14)

Names (2): _corpus: _corpus:phase:mg-zn:mgzn2-c14  
_tdb: _tdb:MgZn-92Aga.tdb:MGZN2_C14  


### TDB models of MGZN2_C14 (1): PHASE and CONSTITUENT statements as written

[MgZn-92Aga.tdb](https://orchid-project.org/data/databases/sgte-binary/MgZn-92Aga.tdb): MGZN2_C14, type code %, sha256 `ebd8b9262088fe02…`

~~~~text
64: PHASE MGZN2_C14 % 2 1 2 !
65: CONST MGZN2_C14 : MG : ZN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1515/ijmr-1992-830402](https://doi.org/10.1515/ijmr-1992-830402) R. Agarwal, S.G. Fries, H.L. Lukas, G. Petzow, F. Sommer, T.G. Chart, G. Effenberg, Z. Metallkd., 83, 216-23(1992).  
_assessment that models this phase_

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735970
- R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065

Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work).

Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

```bibtex
@misc{orchid_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).
