# Ge–Mn phases

> Ge–Mn system: 14 phases (tier A 9, tier C 1, liquid 1, needs_review 3); 13 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/GE-MN.html · Markdown: https://data.orchid-project.org/phases/pages/GE-MN.md

14 phases (tier A 9, tier C 1, liquid 1, needs_review 3); 13 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=GE-MN) · [full JSON](https://data.orchid-project.org/phases/systems/GE-MN.json) · [Ge–Mn system page](https://data.orchid-project.org/systems/GE-MN.html) · [Markdown](https://data.orchid-project.org/phases/pages/GE-MN.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Ge–Mn system (14)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [DIAMOND_A4](#phase-ge-mn-a4-diamond); _phase:ge-mn:a4-diamond_ | C (diamond) · A4 · cF8 · Fd-3m (227) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1220.31 K, x(Mn) 0–0.00167 | 5 | 2 |
| [BCC_A2](#phase-ge-mn-bcc-a2); _phase:ge-mn:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 1402.67–1573.12 K, x(Mn) 0.97078–1 | 2 | 2 |
| [CBCC_A12](#phase-ge-mn-cbcc-a12); _phase:ge-mn:cbcc-a12_ | alpha-Mn · A12 · cI58 · I-43m (217) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1338.72 K, x(Mn) 1–1 | 0 | 2 |
| [CUB_A13](#phase-ge-mn-cub-a13); _phase:ge-mn:cub-a13_ | beta-Mn · A13 · cP20 · P4_132 (213) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 333.72–1408.72 K, x(Mn) 0.90413–1 | 0 | 2 |
| [FCC_A1](#phase-ge-mn-fcc-a1); _phase:ge-mn:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1526 K, x(Mn) 0.87602–1 | 7 | 2 |
| [GE2MN5_HT](#phase-ge-mn-ge2mn5-ht); _phase:ge-mn:ge2mn5-ht_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 906.7–1230 K, x(Mn) 0.71065–0.74 | 18 | 2 |
| [GE2MN5_LT](#phase-ge-mn-ge2mn5-lt); _phase:ge-mn:ge2mn5-lt_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 300–970 K, x(Mn) 0.71429–0.71429 | 5 | 2 |
| [GE3MN5_D88](#phase-ge-mn-ge3mn5-d88); _phase:ge-mn:ge3mn5-d88_ | Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1234.65 K, x(Mn) 0.625–0.625 | 13 | 2 |
| [GE8MN11](#phase-ge-mn-ge8mn11); _phase:ge-mn:ge8mn11_ | Cr11Ge8 · oP76 · Pnma (62) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1069.9 K, x(Mn) 0.57895–0.57895 | 8 | 2 |
| [GEMN2_B82](#phase-ge-mn-gemn2-b82); _phase:ge-mn:gemn2-b82_ | InNi2 · B8_2 · hP6 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 1073.74–1232 K, x(Mn) 0.66144–0.67427 | 10 | 2 |
| [GEMN3_D019](#phase-ge-mn-gemn3-d019); _phase:ge-mn:gemn3-d019_ | Ni3Sn · D0_19 · hP8 · P6_3/mmc (194) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 948–1195.44 K, x(Mn) 0.75534–0.78303 | 12 | 2 |
| [GEMN3_D022](#phase-ge-mn-gemn3-d022); _phase:ge-mn:gemn3-d022_ |  | needs_review | stable in 2 of 2 calculated diagram(s): 300–1052.56 K, x(Mn) 0.75–0.75 | 5 | 2 |
| [HCP_A3](#phase-ge-mn-hcp-a3); _phase:ge-mn:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | not stable in 2 calculated diagram(s) | 0 | 2 |
| [LIQUID](#phase-ge-mn-liquid); _phase:ge-mn:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 995.12–2500 K, x(Mn) 0–1 | 35 | 2 |

## DIAMOND_A4 (Ge–Mn)

- Id: `phase:ge-mn:a4-diamond`; status `assigned`
- Structure: C (diamond) · A4 · cF8 · Fd-3m (227); type `st:a4-c-diamond-cf8`; tier A: standard phase name; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 300–1220.31 K, x(Mn) 0–0.00167
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:a4-diamond)

Names (4): _corpus: _corpus:phase:ge-mn:a4-diamond  
_paper: _paper:10.1016/j.intermet.2013.12.009:DIAMOND  
_tdb: _tdb:GeMn-14Ber.tdb:DIAMOND_A4, tdb:GeMn-15Ber.tdb:DIAMOND_A4  


### TDB models of DIAMOND_A4 (2): PHASE and CONSTITUENT statements as written

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): DIAMOND_A4, type code %, sha256 `4243bd74c559c91e…`

~~~~text
58: PHASE DIAMOND_A4 % 1 1 !
59: CONST DIAMOND_A4 : GE : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): DIAMOND_A4, type code %, sha256 `da527b95e844a2c0…`

~~~~text
56: PHASE DIAMOND_A4 % 1 1 !
57: CONST DIAMOND_A4 : GE% MN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_
- [doi:10.1021/ja01152a518](https://doi.org/10.1021/ja01152a518) James H. Downing, Daniel Cubicciotti, On the Freezing Point Diagram of the Germanium—Manganese System, J. Am. Chem. Soc. 73, 4025-4025 (1951).  
_cited as the source of values for this phase_

## BCC_A2 (Ge–Mn)

- Id: `phase:ge-mn: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): 1402.67–1573.12 K, x(Mn) 0.97078–1
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:bcc-a2)

Names (4): _corpus: _corpus:phase:ge-mn:bcc-a2  
_paper: _paper:10.1016/j.intermet.2013.12.009:BCC_A2  
_tdb: _tdb:GeMn-14Ber.tdb:BCC_A2, tdb:GeMn-15Ber.tdb:BCC_A2  


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

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): BCC_A2, type code %B, sha256 `4243bd74c559c91e…`

~~~~text
48: PHASE BCC_A2 %B 2 1 3 !
49: CONST BCC_A2 : GE MN : VA : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): BCC_A2, type code %B, sha256 `da527b95e844a2c0…`

~~~~text
46: PHASE BCC_A2 %B 2 1 3 !
47: CONST BCC_A2 : GE MN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_

## CBCC_A12 (Ge–Mn)

- Id: `phase:ge-mn:cbcc-a12`; status `assigned`
- Structure: alpha-Mn · A12 · cI58 · I-43m (217); type `st:a12-alpha-mn-ci58`; tier A: standard phase name; confidence high
- Stoichiometry: Mn 1.0000
- Stability: stable in 2 of 2 calculated diagram(s): 300–1338.72 K, x(Mn) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:cbcc-a12)

Names (3): _corpus: _corpus:phase:ge-mn:cbcc-a12  
_tdb: _tdb:GeMn-14Ber.tdb:CBCC_A12, tdb:GeMn-15Ber.tdb:CBCC_A12  


### TDB models of CBCC_A12 (2): PHASE and CONSTITUENT statements as written

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): CBCC_A12, type code %, sha256 `4243bd74c559c91e…`

~~~~text
63: PHASE CBCC_A12 % 2 1 1 !
64: CONST CBCC_A12 : MN : VA : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): CBCC_A12, type code %, sha256 `da527b95e844a2c0…`

~~~~text
61: PHASE CBCC_A12 % 2 1 1 !
62: CONST CBCC_A12 : MN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_

## CUB_A13 (Ge–Mn)

- Id: `phase:ge-mn:cub-a13`; status `assigned`
- Structure: beta-Mn · A13 · cP20 · P4_132 (213); type `st:a13-beta-mn-cp20`; tier A: standard phase name; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 333.72–1408.72 K, x(Mn) 0.90413–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:cub-a13)

Names (3): _corpus: _corpus:phase:ge-mn:cub-a13  
_tdb: _tdb:GeMn-14Ber.tdb:CUB_A13, tdb:GeMn-15Ber.tdb:CUB_A13  


### TDB models of CUB_A13 (2): PHASE and CONSTITUENT statements as written

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): CUB_A13, type code %, sha256 `4243bd74c559c91e…`

~~~~text
68: PHASE CUB_A13 % 2 1 1 !
69: CONST CUB_A13 : GE MN% : VA : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): CUB_A13, type code %, sha256 `da527b95e844a2c0…`

~~~~text
66: PHASE CUB_A13 % 2 1 1 !
67: CONST CUB_A13 : GE MN% : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_

## FCC_A1 (Ge–Mn)

- Id: `phase:ge-mn:fcc-a1`; status `assigned`
- Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 300–1526 K, x(Mn) 0.87602–1
- Literature: 7 values (7 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:fcc-a1)

Names (4): _corpus: _corpus:phase:ge-mn:fcc-a1  
_paper: _paper:10.1016/j.intermet.2013.12.009:FCC_A1  
_tdb: _tdb:GeMn-14Ber.tdb:FCC_A1, tdb:GeMn-15Ber.tdb:FCC_A1  


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

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): FCC_A1, type code %A, sha256 `4243bd74c559c91e…`

~~~~text
43: PHASE FCC_A1 %A 2 1 1 !
44: CONST FCC_A1 : GE MN : VA : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): FCC_A1, type code %A, sha256 `da527b95e844a2c0…`

~~~~text
41: PHASE FCC_A1 %A 2 1 1 !
42: CONST FCC_A1 : GE MN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_

## GE2MN5_HT (Ge–Mn)

- Id: `phase:ge-mn:ge2mn5-ht`; status `needs_review`
- No structure assigned. Why: no_structure_token; off_stoichiometric_model
- Candidate (tdb_comment): Ge2Mn5-HT · hP42 · P3c1 — GeMn-14Ber.tdb: 'Prototype Ge2Mn5-HT (hP42, P3c1)'
- Candidate (tdb_comment): Ge2Mn5-HT · hP42 · P3c1 — GeMn-15Ber.tdb: 'Prototype Ge2Mn5-HT (hP42, P3c1)'
- Stability: stable in 2 of 2 calculated diagram(s): 906.7–1230 K, x(Mn) 0.71065–0.74
- Literature: 18 values (18 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:ge2mn5-ht)

Names (4): _corpus: _corpus:phase:ge-mn:ge2mn5-ht  
_paper: _paper:10.1016/j.intermet.2013.12.009:Mn5Ge2  
_tdb: _tdb:GeMn-14Ber.tdb:GE2MN5_HT, tdb:GeMn-15Ber.tdb:GE2MN5_HT  


### TDB models of GE2MN5_HT (2): PHASE and CONSTITUENT statements as written

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): GE2MN5_HT, type code %, sha256 `4243bd74c559c91e…`

~~~~text
93: PHASE GE2MN5_HT % 2 5 2 !
94: CONST GE2MN5_HT : GE MN% : GE% MN : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): GE2MN5_HT, type code %, sha256 `da527b95e844a2c0…`

~~~~text
91: PHASE GE2MN5_HT % 2 5 2 !
92: CONST GE2MN5_HT : GE MN% : GE% MN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_
- [doi:10.1016/0022-5088(70)90030-5](https://doi.org/10.1016/0022-5088%2870%2990030-5) S.K. Gupta, K.P. Gupta, Phase equilibria in the Manganese-Germanium system in the composition range 20–35 at.% Germanium, Journal of the Less Common Metals 20, 1-6 (1970).  
_cited as the source of values for this phase_

## GE2MN5_LT (Ge–Mn)

- Id: `phase:ge-mn:ge2mn5-lt`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token
- Candidate (tdb_comment): Ga2Mg5 · oI28 · Ibam — GeMn-14Ber.tdb: 'Prototype Ga2Mg5 (oI28, Ibam)'
- Candidate (tdb_comment): Ga2Mg5 · oI28 · Ibam — GeMn-15Ber.tdb: 'Prototype Ga2Mg5 (oI28, Ibam)'
- Stoichiometry: Ge 0.2857, Mn 0.7143
- Stability: stable in 2 of 2 calculated diagram(s): 300–970 K, x(Mn) 0.71429–0.71429
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:ge2mn5-lt)

Names (4): _corpus: _corpus:phase:ge-mn:ge2mn5-lt  
_paper: _paper:10.1016/j.intermet.2013.12.009:LT_Mn5Ge2  
_tdb: _tdb:GeMn-14Ber.tdb:GE2MN5_LT, tdb:GeMn-15Ber.tdb:GE2MN5_LT  


### TDB models of GE2MN5_LT (2): PHASE and CONSTITUENT statements as written

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): GE2MN5_LT, type code %, sha256 `4243bd74c559c91e…`

~~~~text
88: PHASE GE2MN5_LT % 2 5 2 !
89: CONST GE2MN5_LT : MN : GE : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): GE2MN5_LT, type code %, sha256 `da527b95e844a2c0…`

~~~~text
86: PHASE GE2MN5_LT % 2 5 2 !
87: CONST GE2MN5_LT : MN : GE : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_

## GE3MN5_D88 (Ge–Mn)

- Id: `phase:ge-mn:ge3mn5-d88`; status `assigned`
- Structure: Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193); type `st:d8-8-mn5si3-hp16`; tier A: standard phase name; confidence high
- Stoichiometry: Ge 0.3750, Mn 0.6250
- Stability: stable in 2 of 2 calculated diagram(s): 300–1234.65 K, x(Mn) 0.625–0.625
- Literature: 13 values (13 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:ge3mn5-d88)

Names (4): _corpus: _corpus:phase:ge-mn:ge3mn5-d88  
_paper: _paper:10.1016/j.intermet.2013.12.009:Mn5Ge3  
_tdb: _tdb:GeMn-14Ber.tdb:GE3MN5_D88, tdb:GeMn-15Ber.tdb:GE3MN5_D88  


### TDB models of GE3MN5_D88 (2): PHASE and CONSTITUENT statements as written

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): GE3MN5_D88, type code %, sha256 `4243bd74c559c91e…`

~~~~text
78: PHASE GE3MN5_D88 % 2 5 3 !
79: CONST GE3MN5_D88 : MN : GE : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): GE3MN5_D88, type code %, sha256 `da527b95e844a2c0…`

~~~~text
76: PHASE GE3MN5_D88 % 2 5 3 !
77: CONST GE3MN5_D88 : MN : GE : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_

## GE8MN11 (Ge–Mn)

- Id: `phase:ge-mn:ge8mn11`; status `assigned`
- Structure: Cr11Ge8 · oP76 · Pnma (62); type `st:cr11ge8-op76`; 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: Ge 0.4211, Mn 0.5789
- Stability: stable in 2 of 2 calculated diagram(s): 300–1069.9 K, x(Mn) 0.57895–0.57895
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:ge8mn11)

Names (4): _corpus: _corpus:phase:ge-mn:ge8mn11  
_paper: _paper:10.1016/j.intermet.2013.12.009:Mn11Ge8  
_tdb: _tdb:GeMn-14Ber.tdb:GE8MN11, tdb:GeMn-15Ber.tdb:GE8MN11  


### TDB models of GE8MN11 (2): PHASE and CONSTITUENT statements as written

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): GE8MN11, type code %, sha256 `4243bd74c559c91e…`

~~~~text
73: PHASE GE8MN11 % 2 11 8 !
74: CONST GE8MN11 : MN : GE : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): GE8MN11, type code %, sha256 `da527b95e844a2c0…`

~~~~text
71: PHASE GE8MN11 % 2 11 8 !
72: CONST GE8MN11 : MN : GE : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_
- [doi:10.1021/ja01152a518](https://doi.org/10.1021/ja01152a518) James H. Downing, Daniel Cubicciotti, On the Freezing Point Diagram of the Germanium—Manganese System, J. Am. Chem. Soc. 73, 4025-4025 (1951).  
_cited as the source of values for this phase_

## GEMN2_B82 (Ge–Mn)

- Id: `phase:ge-mn:gemn2-b82`; status `assigned`
- Structure: InNi2 · B8_2 · hP6 · P6_3/mmc (194); type `st:b8-2-inni2-hp6`; tier A: standard phase name; confidence high
- Caveat: partitioned order/disorder model in GeMn-14Ber.tdb also describes the disordered state
- Caveat: partitioned order/disorder model in GeMn-15Ber.tdb also describes the disordered state
- Stability: stable in 2 of 2 calculated diagram(s): 1073.74–1232 K, x(Mn) 0.66144–0.67427
- Literature: 10 values (10 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:gemn2-b82)

Names (4): _corpus: _corpus:phase:ge-mn:gemn2-b82  
_paper: _paper:10.1016/j.intermet.2013.12.009:Mn2Ge  
_tdb: _tdb:GeMn-14Ber.tdb:GEMN2_B82, tdb:GeMn-15Ber.tdb:GEMN2_B82  


### TDB models of GEMN2_B82 (2): PHASE and CONSTITUENT statements as written

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): GEMN2_B82, type code %, sha256 `4243bd74c559c91e…`

~~~~text
83: PHASE GEMN2_B82 % 2 2 1 !
84: CONST GEMN2_B82 : GE MN% : GE% MN : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): GEMN2_B82, type code %, sha256 `da527b95e844a2c0…`

~~~~text
81: PHASE GEMN2_B82 % 2 2 1 !
82: CONST GEMN2_B82 : GE MN% : GE% MN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_
- [doi:10.1016/0022-5088(70)90030-5](https://doi.org/10.1016/0022-5088%2870%2990030-5) S.K. Gupta, K.P. Gupta, Phase equilibria in the Manganese-Germanium system in the composition range 20–35 at.% Germanium, Journal of the Less Common Metals 20, 1-6 (1970).  
_cited as the source of values for this phase_

## GEMN3_D019 (Ge–Mn)

- Id: `phase:ge-mn:gemn3-d019`; status `assigned`
- Structure: Ni3Sn · D0_19 · hP8 · P6_3/mmc (194); type `st:d0-19-ni3sn-hp8`; tier A: standard phase name; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 948–1195.44 K, x(Mn) 0.75534–0.78303
- Literature: 12 values (12 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:gemn3-d019)

Names (4): _corpus: _corpus:phase:ge-mn:gemn3-d019  
_paper: _paper:10.1016/j.intermet.2013.12.009:Mn3Ge  
_tdb: _tdb:GeMn-14Ber.tdb:GEMN3_D019, tdb:GeMn-15Ber.tdb:GEMN3_D019  


### TDB models of GEMN3_D019 (2): PHASE and CONSTITUENT statements as written

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): GEMN3_D019, type code %, sha256 `4243bd74c559c91e…`

~~~~text
104: PHASE GEMN3_D019 % 2 3 1 !
105: CONST GEMN3_D019 : MN : GE% MN : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): GEMN3_D019, type code %, sha256 `da527b95e844a2c0…`

~~~~text
102: PHASE GEMN3_D019 % 2 3 1 !
103: CONST GEMN3_D019 : MN : GE% MN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_
- [doi:10.1016/0022-5088(70)90030-5](https://doi.org/10.1016/0022-5088%2870%2990030-5) S.K. Gupta, K.P. Gupta, Phase equilibria in the Manganese-Germanium system in the composition range 20–35 at.% Germanium, Journal of the Less Common Metals 20, 1-6 (1970).  
_cited as the source of values for this phase_

## GEMN3_D022 (Ge–Mn)

- Id: `phase:ge-mn:gemn3-d022`; status `needs_review`
- No structure assigned. Why: name_suggests_D0_22_but_dft_space_group_225
- Candidate (dft_mp): Fm-3m (225) — on-hull MP Mn3Ge at x(MN)=0.7500
- Candidate (dft_oqmd): Fm-3m (225) — on-hull OQMD Ge1 Mn3 at x(MN)=0.7500
- Candidate (name_token): Al3Ti · D0_22 · tI8 · I4/mmm (139) — Strukturbericht/word 'D022' in the TDB name
- Candidate (sgte_mmc2): Al3Ti · D0_22 · tI8 · I4/mmm (139) — Hallstedt 2025 mmc2 row for GEMN3_D022: GeMn3-LT
- Candidate (tdb_comment): Al3Ti · tI8 · I4/mmm — GeMn-14Ber.tdb: 'Prototype Al3Ti (tI8, I4/mmm) LT'
- Candidate (tdb_comment): Al3Ti · tI8 · I4/mmm — GeMn-15Ber.tdb: 'Prototype Al3Ti (tI8, I4/mmm) LT'
- Stoichiometry: Ge 0.2500, Mn 0.7500
- Stability: stable in 2 of 2 calculated diagram(s): 300–1052.56 K, x(Mn) 0.75–0.75
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:gemn3-d022)

Names (4): _corpus: _corpus:phase:ge-mn:gemn3-d022  
_paper: _paper:10.1016/j.intermet.2013.12.009:LT_Mn3Ge  
_tdb: _tdb:GeMn-14Ber.tdb:GEMN3_D022, tdb:GeMn-15Ber.tdb:GEMN3_D022  


### TDB models of GEMN3_D022 (2): PHASE and CONSTITUENT statements as written

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): GEMN3_D022, type code %, sha256 `4243bd74c559c91e…`

~~~~text
99: PHASE GEMN3_D022 % 2 3 1 !
100: CONST GEMN3_D022 : MN : GE : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): GEMN3_D022, type code %, sha256 `da527b95e844a2c0…`

~~~~text
97: PHASE GEMN3_D022 % 2 3 1 !
98: CONST GEMN3_D022 : MN : GE : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_

## HCP_A3 (Ge–Mn)

- Id: `phase:ge-mn:hcp-a3`; status `assigned`
- Structure: Mg · A3 · hP2 · P6_3/mmc (194); type `st:a3-mg-hp2`; tier A: standard phase name; confidence high
- Stability: not stable in 2 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:hcp-a3)

Names (3): _corpus: _corpus:phase:ge-mn:hcp-a3  
_tdb: _tdb:GeMn-14Ber.tdb:HCP_A3, tdb:GeMn-15Ber.tdb:HCP_A3  


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

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): HCP_A3, type code %, sha256 `4243bd74c559c91e…`

~~~~text
53: PHASE HCP_A3 % 2 1 0.5 !
54: CONST HCP_A3 : GE MN : VA : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): HCP_A3, type code %, sha256 `da527b95e844a2c0…`

~~~~text
51: PHASE HCP_A3 % 2 1 0.5 !
52: CONST HCP_A3 : GE MN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_

## LIQUID (Ge–Mn)

- Id: `phase:ge-mn:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 995.12–2500 K, x(Mn) 0–1
- Literature: 35 values (35 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-mn:liquid)

Names (4): _corpus: _corpus:phase:ge-mn:liquid  
_paper: _paper:10.1016/j.intermet.2013.12.009:Liquid  
_tdb: _tdb:GeMn-14Ber.tdb:LIQUID, tdb:GeMn-15Ber.tdb:LIQUID  


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

[GeMn-14Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-14Ber.tdb): LIQUID, type code %, sha256 `4243bd74c559c91e…`

~~~~text
38: PHASE LIQUID:L % 1 1 !
39: CONST LIQUID:L : GE GE3MN5_F MN : !
~~~~

[GeMn-15Ber.tdb](https://orchid-project.org/data/databases/sgte-binary/GeMn-15Ber.tdb): LIQUID, type code %, sha256 `da527b95e844a2c0…`

~~~~text
36: PHASE LIQUID:L % 1 1 !
37: CONST LIQUID:L : GE GE3MN5_F MN : !
~~~~

Example references (4 of 4; assessments first): 

- [doi:10.1016/j.intermet.2013.12.009](https://doi.org/10.1016/j.intermet.2013.12.009) A. Berche, J.C. Tedenac, P. Jund, Thermodynamic modeling of the germanium–manganese system, Intermetallics 47, 23-30 (2014).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/j.jallcom.2015.01.072](https://doi.org/10.1016/j.jallcom.2015.01.072) Alexandre Berche, Elodie Théron-Ruiz, Jean-Claude Tédenac, Philippe Jund, Thermodynamic study of the Ge–Mn–Si system, Journal of Alloys and Compounds 632, 10-16 (2015).  
_assessment that models this phase_
- [doi:10.1016/0022-5088(70)90030-5](https://doi.org/10.1016/0022-5088%2870%2990030-5) S.K. Gupta, K.P. Gupta, Phase equilibria in the Manganese-Germanium system in the composition range 20–35 at.% Germanium, Journal of the Less Common Metals 20, 1-6 (1970).  
_cited as the source of values for this phase_
- [doi:10.1021/ja01152a518](https://doi.org/10.1021/ja01152a518) James H. Downing, Daniel Cubicciotti, On the Freezing Point Diagram of the Germanium—Manganese System, J. Am. Chem. Soc. 73, 4025-4025 (1951).  
_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).