# Ge–Yb phases

> Ge–Yb system: 11 phases (tier A 6, tier C 4, liquid 1); 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/GE-YB.html · Markdown: https://data.orchid-project.org/phases/pages/GE-YB.md

11 phases (tier A 6, tier C 4, liquid 1); 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=GE-YB) · [full JSON](https://data.orchid-project.org/phases/systems/GE-YB.json) · [Ge–Yb system page](https://data.orchid-project.org/systems/GE-YB.html) · [Markdown](https://data.orchid-project.org/phases/pages/GE-YB.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Ge–Yb system (11)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [DIAMOND_A4](#phase-ge-yb-a4-diamond); _phase:ge-yb:a4-diamond_ | C (diamond) · A4 · cF8 · Fd-3m (227) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1213.6 K, x(Yb) 0–0 | 3 | 2 |
| [BCC_A2](#phase-ge-yb-bcc-a2); _phase:ge-yb:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 1033–1090 K, x(Yb) 1–1 | 0 | 2 |
| [FCC_A1](#phase-ge-yb-fcc-a1); _phase:ge-yb:fcc-a1_ | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1088 K, x(Yb) 1–1 | 3 | 2 |
| [GE10YB11](#phase-ge-yb-ge10yb11); _phase:ge-yb:ge10yb11_ | Ge10Ho11 · tI84 · I4/mmm (139) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1777.83 K, x(Yb) 0.52381–0.52381 | 6 | 2 |
| [GE3YB5_D88](#phase-ge-yb-ge3yb5-d88); _phase:ge-yb:ge3yb5-d88_ | Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1857.88 K, x(Yb) 0.625–0.625 | 6 | 2 |
| [GE4YB5](#phase-ge-yb-ge4yb5); _phase:ge-yb:ge4yb5_ | Ge4Sm5 · oP36 · Pnma (62) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1914.51 K, x(Yb) 0.55556–0.55556 | 6 | 2 |
| [GE5YB3](#phase-ge-yb-ge5yb3); _phase:ge-yb:ge5yb3_ | Pd5Th3 · hP8 · P-62m (189) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1351.33 K, x(Yb) 0.375–0.375 | 6 | 2 |
| [GE8YB3](#phase-ge-yb-ge8yb3); _phase:ge-yb:ge8yb3_ | Ge8Yb3 · aP22 · P-1 (2) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 2 of 2 calculated diagram(s): 300–1141.02 K, x(Yb) 0.27273–0.27273 | 6 | 2 |
| [GEYB2_C37](#phase-ge-yb-geyb2-c37); _phase:ge-yb:geyb2-c37_ | Co2Si · C37 · oP12 · Pnma (62) | tier A: standard phase name | stable in 2 of 2 calculated diagram(s): 300–1477.86 K, x(Yb) 0.66667–0.66667 | 6 | 2 |
| [HCP_A3](#phase-ge-yb-hcp-a3); _phase:ge-yb: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-yb-liquid); _phase:ge-yb:liquid_ | liquid | liquid | stable in 2 of 2 calculated diagram(s): 1003.43–2500 K, x(Yb) 0–1 | 24 | 2 |

## DIAMOND_A4 (Ge–Yb)

- Id: `phase:ge-yb: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): 300–1213.6 K, x(Yb) 0–0
- Literature: 3 values (3 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-yb:a4-diamond)

Names (5): _corpus: _corpus:phase:ge-yb:a4-diamond, corpus:phase:ge-yb:diamond-a4  
_paper: _paper:10.1080/00150193.2018.1392217:(Ge)  
_tdb: _tdb:GeYb-18Ach.tdb:DIAMOND_A4, tdb:GeYb-18Zhu.tdb:DIAMOND_A4  


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

[GeYb-18Ach.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Ach.tdb): DIAMOND_A4, type code %, sha256 `dbdc29c38dccdf3b…`

~~~~text
48: PHASE DIAMOND_A4 % 1 1 !
49: CONST DIAMOND_A4 : GE : !
~~~~

[GeYb-18Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Zhu.tdb): DIAMOND_A4, type code %, sha256 `b4ad8aa28cce9dad…`

~~~~text
44: PHASE DIAMOND_A4 % 1 1 !
45: CONST DIAMOND_A4 : GE% YB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1080/00150193.2018.1392217](https://doi.org/10.1080/00150193.2018.1392217) Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10973-017-6203-x](https://doi.org/10.1007/s10973-017-6203-x) Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018).  
_assessment that models this phase_

## BCC_A2 (Ge–Yb)

- Id: `phase:ge-yb:bcc-a2`; status `assigned`
- Structure: W · A2 · cI2 · Im-3m (229); type `st:a2-w-ci2`; tier A: standard phase name; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 1033–1090 K, x(Yb) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-yb:bcc-a2)

Names (3): _corpus: _corpus:phase:ge-yb:bcc-a2  
_tdb: _tdb:GeYb-18Ach.tdb:BCC_A2, tdb:GeYb-18Zhu.tdb:BCC_A2  


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

[GeYb-18Ach.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Ach.tdb): BCC_A2, type code %B, sha256 `dbdc29c38dccdf3b…`

~~~~text
38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : GE YB% : VA : !
~~~~

[GeYb-18Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Zhu.tdb): BCC_A2, type code %B, sha256 `b4ad8aa28cce9dad…`

~~~~text
34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : GE YB% : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s10973-017-6203-x](https://doi.org/10.1007/s10973-017-6203-x) Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018).  
_assessment that models this phase_
- [doi:10.1080/00150193.2018.1392217](https://doi.org/10.1080/00150193.2018.1392217) Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018).  
_assessment that models this phase_

## FCC_A1 (Ge–Yb)

- Id: `phase:ge-yb:fcc-a1`; status `assigned`
- Structure: Cu · A1 · cF4 · Fm-3m (225); type `st:a1-cu-cf4`; tier A: standard phase name; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 300–1088 K, x(Yb) 1–1
- Literature: 3 values (3 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-yb:fcc-a1)

Names (4): _corpus: _corpus:phase:ge-yb:fcc-a1  
_paper: _paper:10.1080/00150193.2018.1392217:Fcc_A1  
_tdb: _tdb:GeYb-18Ach.tdb:FCC_A1, tdb:GeYb-18Zhu.tdb:FCC_A1  


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

[GeYb-18Ach.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Ach.tdb): FCC_A1, type code %A, sha256 `dbdc29c38dccdf3b…`

~~~~text
33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : GE YB% : VA : !
~~~~

[GeYb-18Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Zhu.tdb): FCC_A1, type code %A, sha256 `b4ad8aa28cce9dad…`

~~~~text
29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : GE YB% : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1080/00150193.2018.1392217](https://doi.org/10.1080/00150193.2018.1392217) Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10973-017-6203-x](https://doi.org/10.1007/s10973-017-6203-x) Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018).  
_assessment that models this phase_

## GE10YB11 (Ge–Yb)

- Id: `phase:ge-yb:ge10yb11`; status `assigned`
- Structure: Ge10Ho11 · tI84 · I4/mmm (139); type `st:ge10ho11-ti84`; 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 0.4762, Yb 0.5238
- Stability: stable in 2 of 2 calculated diagram(s): 300–1777.83 K, x(Yb) 0.52381–0.52381
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-yb:ge10yb11)

Names (4): _corpus: _corpus:phase:ge-yb:ge10yb11  
_paper: _paper:10.1080/00150193.2018.1392217:Yb11Ge10  
_tdb: _tdb:GeYb-18Ach.tdb:GE10YB11, tdb:GeYb-18Zhu.tdb:GE10YB11  


### TDB models of GE10YB11 (2): PHASE and CONSTITUENT statements as written

[GeYb-18Ach.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Ach.tdb): GE10YB11, type code %, sha256 `dbdc29c38dccdf3b…`

~~~~text
63: PHASE GE10YB11 % 2 10 11 !
64: CONST GE10YB11 : GE : YB : !
~~~~

[GeYb-18Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Zhu.tdb): GE10YB11, type code %, sha256 `b4ad8aa28cce9dad…`

~~~~text
59: PHASE GE10YB11 % 2 10 11 !
60: CONST GE10YB11 : GE : YB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1080/00150193.2018.1392217](https://doi.org/10.1080/00150193.2018.1392217) Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10973-017-6203-x](https://doi.org/10.1007/s10973-017-6203-x) Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018).  
_assessment that models this phase_

## GE3YB5_D88 (Ge–Yb)

- Id: `phase:ge-yb:ge3yb5-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, Yb 0.6250
- Stability: stable in 2 of 2 calculated diagram(s): 300–1857.88 K, x(Yb) 0.625–0.625
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-yb:ge3yb5-d88)

Names (4): _corpus: _corpus:phase:ge-yb:ge3yb5-d88  
_paper: _paper:10.1080/00150193.2018.1392217:Yb5Ge3  
_tdb: _tdb:GeYb-18Ach.tdb:GE3YB5_D88, tdb:GeYb-18Zhu.tdb:GE3YB5_D88  


### TDB models of GE3YB5_D88 (2): PHASE and CONSTITUENT statements as written

[GeYb-18Ach.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Ach.tdb): GE3YB5_D88, type code %, sha256 `dbdc29c38dccdf3b…`

~~~~text
73: PHASE GE3YB5_D88 % 2 3 5 !
74: CONST GE3YB5_D88 : GE : YB : !
~~~~

[GeYb-18Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Zhu.tdb): GE3YB5_D88, type code %, sha256 `b4ad8aa28cce9dad…`

~~~~text
69: PHASE GE3YB5_D88 % 2 3 5 !
70: CONST GE3YB5_D88 : GE : YB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1080/00150193.2018.1392217](https://doi.org/10.1080/00150193.2018.1392217) Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10973-017-6203-x](https://doi.org/10.1007/s10973-017-6203-x) Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018).  
_assessment that models this phase_

## GE4YB5 (Ge–Yb)

- Id: `phase:ge-yb:ge4yb5`; status `assigned`
- Structure: Ge4Sm5 · oP36 · Pnma (62); type `st:ge4sm5-op36`; 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 0.4444, Yb 0.5556
- Stability: stable in 2 of 2 calculated diagram(s): 300–1914.51 K, x(Yb) 0.55556–0.55556
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-yb:ge4yb5)

Names (4): _corpus: _corpus:phase:ge-yb:ge4yb5  
_paper: _paper:10.1080/00150193.2018.1392217:Yb5Ge4  
_tdb: _tdb:GeYb-18Ach.tdb:GE4YB5, tdb:GeYb-18Zhu.tdb:GE4YB5  


### TDB models of GE4YB5 (2): PHASE and CONSTITUENT statements as written

[GeYb-18Ach.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Ach.tdb): GE4YB5, type code %, sha256 `dbdc29c38dccdf3b…`

~~~~text
68: PHASE GE4YB5 % 2 4 5 !
69: CONST GE4YB5 : GE : YB : !
~~~~

[GeYb-18Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Zhu.tdb): GE4YB5, type code %, sha256 `b4ad8aa28cce9dad…`

~~~~text
64: PHASE GE4YB5 % 2 4 5 !
65: CONST GE4YB5 : GE : YB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1080/00150193.2018.1392217](https://doi.org/10.1080/00150193.2018.1392217) Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10973-017-6203-x](https://doi.org/10.1007/s10973-017-6203-x) Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018).  
_assessment that models this phase_

## GE5YB3 (Ge–Yb)

- Id: `phase:ge-yb:ge5yb3`; status `assigned`
- Structure: Pd5Th3 · hP8 · P-62m (189); type `st:pd5th3-hp8`; 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 0.6250, Yb 0.3750
- Stability: stable in 2 of 2 calculated diagram(s): 300–1351.33 K, x(Yb) 0.375–0.375
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-yb:ge5yb3)

Names (4): _corpus: _corpus:phase:ge-yb:ge5yb3  
_paper: _paper:10.1080/00150193.2018.1392217:Yb3Ge5  
_tdb: _tdb:GeYb-18Ach.tdb:GE5YB3, tdb:GeYb-18Zhu.tdb:GE5YB3  


### TDB models of GE5YB3 (2): PHASE and CONSTITUENT statements as written

[GeYb-18Ach.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Ach.tdb): GE5YB3, type code %, sha256 `dbdc29c38dccdf3b…`

~~~~text
58: PHASE GE5YB3 % 2 5 3 !
59: CONST GE5YB3 : GE : YB : !
~~~~

[GeYb-18Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Zhu.tdb): GE5YB3, type code %, sha256 `b4ad8aa28cce9dad…`

~~~~text
54: PHASE GE5YB3 % 2 5 3 !
55: CONST GE5YB3 : GE : YB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1080/00150193.2018.1392217](https://doi.org/10.1080/00150193.2018.1392217) Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10973-017-6203-x](https://doi.org/10.1007/s10973-017-6203-x) Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018).  
_assessment that models this phase_

## GE8YB3 (Ge–Yb)

- Id: `phase:ge-yb:ge8yb3`; status `assigned`
- Structure: Ge8Yb3 · aP22 · P-1 (2); type `st:ge8yb3-ap22`; 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 0.7273, Yb 0.2727
- Stability: stable in 2 of 2 calculated diagram(s): 300–1141.02 K, x(Yb) 0.27273–0.27273
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-yb:ge8yb3)

Names (4): _corpus: _corpus:phase:ge-yb:ge8yb3  
_paper: _paper:10.1080/00150193.2018.1392217:Yb3Ge8  
_tdb: _tdb:GeYb-18Ach.tdb:GE8YB3, tdb:GeYb-18Zhu.tdb:GE8YB3  


### TDB models of GE8YB3 (2): PHASE and CONSTITUENT statements as written

[GeYb-18Ach.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Ach.tdb): GE8YB3, type code %, sha256 `dbdc29c38dccdf3b…`

~~~~text
53: PHASE GE8YB3 % 2 8 3 !
54: CONST GE8YB3 : GE : YB : !
~~~~

[GeYb-18Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Zhu.tdb): GE8YB3, type code %, sha256 `b4ad8aa28cce9dad…`

~~~~text
49: PHASE GE8YB3 % 2 8 3 !
50: CONST GE8YB3 : GE : YB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1080/00150193.2018.1392217](https://doi.org/10.1080/00150193.2018.1392217) Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10973-017-6203-x](https://doi.org/10.1007/s10973-017-6203-x) Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018).  
_assessment that models this phase_

## GEYB2_C37 (Ge–Yb)

- Id: `phase:ge-yb:geyb2-c37`; status `assigned`
- Structure: Co2Si · C37 · oP12 · Pnma (62); type `st:c37-co2si-op12`; tier A: standard phase name; confidence high
- Stoichiometry: Ge 0.3333, Yb 0.6667
- Stability: stable in 2 of 2 calculated diagram(s): 300–1477.86 K, x(Yb) 0.66667–0.66667
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-yb:geyb2-c37)

Names (4): _corpus: _corpus:phase:ge-yb:geyb2-c37  
_paper: _paper:10.1080/00150193.2018.1392217:Yb2Ge  
_tdb: _tdb:GeYb-18Ach.tdb:GEYB2_C37, tdb:GeYb-18Zhu.tdb:GEYB2_C37  


### TDB models of GEYB2_C37 (2): PHASE and CONSTITUENT statements as written

[GeYb-18Ach.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Ach.tdb): GEYB2_C37, type code %, sha256 `dbdc29c38dccdf3b…`

~~~~text
78: PHASE GEYB2_C37 % 2 1 2 !
79: CONST GEYB2_C37 : GE : YB : !
~~~~

[GeYb-18Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Zhu.tdb): GEYB2_C37, type code %, sha256 `b4ad8aa28cce9dad…`

~~~~text
74: PHASE GEYB2_C37 % 2 1 2 !
75: CONST GEYB2_C37 : GE : YB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1080/00150193.2018.1392217](https://doi.org/10.1080/00150193.2018.1392217) Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10973-017-6203-x](https://doi.org/10.1007/s10973-017-6203-x) Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018).  
_assessment that models this phase_

## HCP_A3 (Ge–Yb)

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

Names (3): _corpus: _corpus:phase:ge-yb:hcp-a3  
_tdb: _tdb:GeYb-18Ach.tdb:HCP_A3, tdb:GeYb-18Zhu.tdb:HCP_A3  


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

[GeYb-18Ach.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Ach.tdb): HCP_A3, type code %, sha256 `dbdc29c38dccdf3b…`

~~~~text
43: PHASE HCP_A3 % 2 1 0.5 !
44: CONST HCP_A3 : GE YB : VA : !
~~~~

[GeYb-18Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Zhu.tdb): HCP_A3, type code %, sha256 `b4ad8aa28cce9dad…`

~~~~text
39: PHASE HCP_A3 % 2 1 0.5 !
40: CONST HCP_A3 : GE YB : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1007/s10973-017-6203-x](https://doi.org/10.1007/s10973-017-6203-x) Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018).  
_assessment that models this phase_
- [doi:10.1080/00150193.2018.1392217](https://doi.org/10.1080/00150193.2018.1392217) Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018).  
_assessment that models this phase_

## LIQUID (Ge–Yb)

- Id: `phase:ge-yb:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 2 of 2 calculated diagram(s): 1003.43–2500 K, x(Yb) 0–1
- Literature: 24 values (24 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:ge-yb:liquid)

Names (4): _corpus: _corpus:phase:ge-yb:liquid  
_paper: _paper:10.1080/00150193.2018.1392217:L  
_tdb: _tdb:GeYb-18Ach.tdb:LIQUID, tdb:GeYb-18Zhu.tdb:LIQUID  


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

[GeYb-18Ach.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Ach.tdb): LIQUID, type code %, sha256 `dbdc29c38dccdf3b…`

~~~~text
28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : GE YB : !
~~~~

[GeYb-18Zhu.tdb](https://orchid-project.org/data/databases/sgte-binary/GeYb-18Zhu.tdb): LIQUID, type code %, sha256 `b4ad8aa28cce9dad…`

~~~~text
24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : GE YB : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1080/00150193.2018.1392217](https://doi.org/10.1080/00150193.2018.1392217) Zhu Dai-man, Li Chang-rong, Guo Cui-ping, Du Zhen-min, Thermodynamic assessment of the Ge-Yb binary system, Ferroelectrics 522, 80-87 (2018).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1007/s10973-017-6203-x](https://doi.org/10.1007/s10973-017-6203-x) Khadija Achgar, Saïd Kardellass, Najim Selhaoui, Thermodynamic assessment of the Ytterbium–Germanium binary system, J Therm Anal Calorim 131, 443-453 (2018).  
_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).