# Ge–Si system

> Ge–Si system: 115 accepted literature values (crystal structure 64, activity / EMF / Gibbs energy 31, mixing / partial 20) and 2 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/GE-SI.html · Markdown: https://data.orchid-project.org/systems/GE-SI.md

115 accepted literature values from 2 paper(s) (experimental 51, unspecified 64); 2 calculated phase diagram(s). 2 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: [JSON](https://data.orchid-project.org/literature/systems/GE-SI.json) · [CSV](https://data.orchid-project.org/systems/GE-SI.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#GE-SI) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#GE-SI/GeSi-84Ole.json) · [phases (5)](https://data.orchid-project.org/phases/pages/GE-SI.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/GE-SI.html) · [Markdown](https://data.orchid-project.org/systems/GE-SI.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 51 |
| unspecified | 64 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| mixing / partial | 20 |
| activity / EMF / Gibbs energy | 31 |
| crystal structure | 64 |

## Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Table: Assessments with a calculated phase diagram

| TDB file | Assessment | SHA-256 | Links |
|---|---|---|---|
| GeSi-84Ole.tdb | R.W. Olesinski, G.J. Abbaschian, Bull. Alloy Phase Diag., 5, 180-83(1984). [doi:10.1007/BF02868957](https://doi.org/10.1007/BF02868957) | `22f65f7d038399c1f96a0b49479374d3186f4245390bc76ef781417680e7fad6` | [viewer](https://orchid-project.org/phase-diagrams/#GE-SI/GeSi-84Ole.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/GeSi-84Ole.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/GeSi-84Ole.json) |
| GeSi-92Ber-LB.tdb | C. Bergman, R. Chastel, R. Castanet, J. Phase Equilib., 13, 113-18(1992). [doi:10.1007/BF02667471](https://doi.org/10.1007/BF02667471) | `f1f9fad361e69cdfebe6ad959e1395ceb31809284c4c971915ab874aa6045d2c` | [viewer](https://orchid-project.org/phase-diagrams/#GE-SI/GeSi-92Ber-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/GeSi-92Ber-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/GeSi-92Ber-LB.json) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/GE/GE-SI.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/GE/GE-SI.json) · [CALPHAD hull GeSi-84Ole](https://data.orchid-project.org/hulls/calphad-sgte/GE/GE-SI--GeSi-84Ole.json)

## Other properties

### Mixing / partial (20)

Table: Mixing / partial, Ge–Si system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Partial enthalpy; _printed: H f, \*\*si_ | 6.61 kJ/mol (basis unstated) | 1327 |  | experimental | [1] Bergman 1992 | p. 3; `ORC-KD52K36YA7` | “Then the partial enthalpy of Si at infinite dilution, H f, \*\*si, is 6.61 kJ/mol with reference to Si (L, 1327 K).” |
| Partial enthalpy; _printed: H^l_Si_ | 52.789 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9787, Si 0.0213_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 9; `ORC-2NVTT2UXQD.bf3330` |  |
| Partial enthalpy; _printed: H^l_Si_ | 54.706 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9991, Si 9.000e-4_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 1; `ORC-3E24KNXBIJ.4b43fb` |  |
| Partial enthalpy; _printed: H^l_Si_ | 53.118 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9885, Si 0.0115_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 16; `ORC-3NB6LH5BOX.c005e2` |  |
| Partial enthalpy; _printed: H^l_Si_ | 54.7 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9808, Si 0.0192_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 19; `ORC-5M25GCHFD3.f292a1` |  |
| Partial enthalpy; _printed: H^l_Si_ | 57.774 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9936, Si 0.0064_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 14; `ORC-6KABUIFCXR.c370cc` |  |
| Partial enthalpy; _printed: H^l_Si_ | 54.137 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.985, Si 0.015_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 7; `ORC-7O7QFOAKVP.407b98` |  |
| Partial enthalpy; _printed: H^l_Si_ | 53.938 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9993, Si 7.000e-4_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 11; `ORC-CLZWNTLFAB.cfaa0b` |  |
| Partial enthalpy; _printed: H^l_Si_ | 56.326 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9976, Si 0.0024_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 12; `ORC-DHBQHRCCO2.d057c1` |  |
| Partial enthalpy; _printed: H^l_Si_ | 54.406 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9925, Si 0.0075_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 4; `ORC-E3SZXDRQ6I.da1d36` |  |
| Partial enthalpy; _printed: H^l_Si_ | 56.867 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9912, Si 0.0088_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 15; `ORC-FKJD5JJWEH.66fbe0` |  |
| Partial enthalpy; _printed: H^l_Si_ | 58.855 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9956, Si 0.0044_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 13; `ORC-HTQJFNPWII.96d6b6` |  |
| Partial enthalpy; _printed: H^l_Si_ | 55.873 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9876, Si 0.0124_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 6; `ORC-L7EY6IDEC6.599c0f` |  |
| Partial enthalpy; _printed: H^l_Si_ | 54.513 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9751, Si 0.0249_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 10; `ORC-PHEQUK6BV6.81ef2f` |  |
| Partial enthalpy; _printed: H^l_Si_ | 55.816 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.982, Si 0.018_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 8; `ORC-RBDJ7HCP4Y.a2adcc` |  |
| Partial enthalpy; _printed: H^l_Si_ | 54.513 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9862, Si 0.0138_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 17; `ORC-WUH7YGZKTI.a63e65` |  |
| Partial enthalpy; _printed: H^l_Si_ | 55.811 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.99, Si 0.01_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 5; `ORC-YQ4HLWPE5Q.264c2c` |  |
| Partial enthalpy; _printed: H^l_Si_ | 60.142 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9951, Si 0.0049_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 3; `ORC-ZFP42CVL5B.7632a6` |  |
| Partial enthalpy; _printed: H^l_Si_ | 56.576 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9973, Si 0.0027_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 2; `ORC-ZNTYCLLCGX.88e0f9` |  |
| Partial enthalpy; _printed: H^l_Si_ | 53.947 kJ/mol (basis unstated) | 1327 | l; _alloy: Ge 0.9836, Si 0.0164_ | experimental | [1] Bergman 1992 | Table 1, p. 2, row 18; `ORC-ZYQZHKYNAZ.cb90d6` |  |

### Activity / EMF / Gibbs energy (31)

Table: Activity / EMF / Gibbs energy, Ge–Si system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Activity Ge; _printed: aGe_ | 0.26 1 | 1723 | liquid; _alloy: Ge 0.2, Si 0.8_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 9; `ORC-4K4ENMK6L6.064bce` |  |
| Activity Ge; _printed: aGe_ | 0.366 1 | 1723 | liquid; _alloy: Ge 0.3, Si 0.7_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 8; `ORC-4VJOVJYQSA.7735fb` |  |
| Activity Ge; _printed: aGe_ | 0.14 1 | 1723 | liquid; _alloy: Ge 0.1, Si 0.9_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 10; `ORC-6YLE4P7WNL.dd51ab` |  |
| Activity Ge; _printed: aGe_ | 0.9 1 | 1723 | liquid; _alloy: Ge 0.9, Si 0.1_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 2; `ORC-IS45WK5UKP.262376` |  |
| Activity Ge; _printed: a_Ge_ | 0.554 1 | 1723 | liquid; _alloy: Ge 0.5, Si 0.5_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 6; `ORC-K43YLA7BZC.068413` |  |
| Activity Ge; _printed: aGe_ | 1 1 | 1723 | liquid; _alloy: Ge 1, Si 0_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 1; `ORC-MX4X76FL6C.510ad6` |  |
| Activity Ge; _printed: aGe_ | 0.46 1 | 1723 | liquid; _alloy: Ge 0.4, Si 0.6_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 7; `ORC-PQIJGZZYCW.1366ba` |  |
| Activity Ge; _printed: aGe_ | 0 1 | 1723 | liquid; _alloy: Ge 0, Si 1_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 11; `ORC-QAZ74ROOA4.c7172c` |  |
| Activity Ge; _printed: aGe_ | 0.726 1 | 1723 | liquid; _alloy: Ge 0.7, Si 0.3_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 4; `ORC-TEUX77SVIF.94ebfe` |  |
| Activity Ge; _printed: aGe_ | 0.81 1 | 1723 | liquid; _alloy: Ge 0.8, Si 0.2_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 3; `ORC-UZLQY2LXGE.b7f095` |  |
| Activity Ge; _printed: aGe_ | 0.64 1 | 1723 | liquid; _alloy: Ge 0.6, Si 0.4_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 5; `ORC-VEMIQI2QKH.72ac2a` |  |
| Activity Si; _printed: aSi_ | 0.81 1 | 1723 | liquid; _alloy: Ge 0.2, Si 0.8_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 9; `ORC-4K4ENMK6L6.173f2e` |  |
| Activity Si; _printed: aSi_ | 0.726 1 | 1723 | liquid; _alloy: Ge 0.3, Si 0.7_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 8; `ORC-4VJOVJYQSA.b3216e` |  |
| Activity Si; _printed: aSi_ | 0.9 1 | 1723 | liquid; _alloy: Ge 0.1, Si 0.9_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 10; `ORC-6YLE4P7WNL.2db3df` |  |
| Activity Si; _printed: aSi_ | 0.14 1 | 1723 | liquid; _alloy: Ge 0.9, Si 0.1_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 2; `ORC-IS45WK5UKP.91a912` |  |
| Activity Si; _printed: aSi_ | 0.554 1 | 1723 | liquid; _alloy: Ge 0.5, Si 0.5_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 6; `ORC-K43YLA7BZC.443dd6` |  |
| Activity Si; _printed: aSi_ | 0 1 | 1723 | liquid; _alloy: Ge 1, Si 0_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 1; `ORC-MX4X76FL6C.a28b43` |  |
| Activity Si; _printed: aSi_ | 0.64 1 | 1723 | liquid; _alloy: Ge 0.4, Si 0.6_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 7; `ORC-PQIJGZZYCW.29b003` |  |
| Activity Si; _printed: aSi_ | 1 1 | 1723 | liquid; _alloy: Ge 0, Si 1_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 11; `ORC-QAZ74ROOA4.b1f97d` |  |
| Activity Si; _printed: aSi_ | 0.366 1 | 1723 | liquid; _alloy: Ge 0.7, Si 0.3_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 4; `ORC-TEUX77SVIF.e3e014` |  |
| Activity Si; _printed: aSi_ | 0.26 1 | 1723 | liquid; _alloy: Ge 0.8, Si 0.2_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 3; `ORC-UZLQY2LXGE.f9126f` |  |
| Activity Si; _printed: aSi_ | 0.46 1 | 1723 | liquid; _alloy: Ge 0.6, Si 0.4_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 5; `ORC-VEMIQI2QKH.6141b4` |  |
| Gibbs energy; _printed: Gex_ | 0.89 kJ/mol | 1723 | liquid; _alloy: Ge 0.2, Si 0.8_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 9; `ORC-4K4ENMK6L6.08b03c` |  |
| Gibbs energy; _printed: Gex_ | 1.22 kJ/mol | 1723 | liquid; _alloy: Ge 0.3, Si 0.7_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 8; `ORC-4VJOVJYQSA.48e35c` |  |
| Gibbs energy; _printed: Gex_ | 0.48 kJ/mol | 1723 | liquid; _alloy: Ge 0.1, Si 0.9_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 10; `ORC-6YLE4P7WNL.eabf63` |  |
| Gibbs energy; _printed: Gex_ | 0.48 kJ/mol | 1723 | liquid; _alloy: Ge 0.9, Si 0.1_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 2; `ORC-IS45WK5UKP.01df86` |  |
| Gibbs energy; _printed: Gex_ | 1.47 kJ/mol | 1723 | liquid; _alloy: Ge 0.5, Si 0.5_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 6; `ORC-K43YLA7BZC.dd372a` |  |
| Gibbs energy; _printed: Gex_ | 1.35 kJ/mol | 1723 | liquid; _alloy: Ge 0.4, Si 0.6_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 7; `ORC-PQIJGZZYCW.0f4fad` |  |
| Gibbs energy; _printed: Gex_ | 1.22 kJ/mol | 1723 | liquid; _alloy: Ge 0.7, Si 0.3_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 4; `ORC-TEUX77SVIF.a13fe5` |  |
| Gibbs energy; _printed: Gex_ | 0.89 kJ/mol | 1723 | liquid; _alloy: Ge 0.8, Si 0.2_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 3; `ORC-UZLQY2LXGE.5e1036` |  |
| Gibbs energy; _printed: Gex_ | 1.35 kJ/mol | 1723 | liquid; _alloy: Ge 0.6, Si 0.4_ | experimental | [1] Bergman 1992 | Table 3, p. 3, row 5; `ORC-VEMIQI2QKH.e4ff87` |  |

### Crystal structure (64)

Table: Crystal structure, Ge–Si system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a | 5.4307 Å | 298.15 | (Ge, Si); _alloy: Si 0.5_ | unspecified | [2] Olesinski 1984 | Table 1, p. 3, row 2; `ORC-7X57ACASYH` |  |
| Lattice a | 5.6575 Å | 298.15 | (Ge, Si); _alloy: Si 0.5_ | unspecified | [2] Olesinski 1984 | Table 1, p. 3, row 1; `ORC-OBULXHJBA2` |  |
| Lattice a | 5.596 Å | 298.15 | UNKNOWN; _alloy: Ge 0.75, Si 0.25_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 6; `ORC-4TUXBPOPQM.c5b452` |  |
| Lattice a | 5.5842 Å | 298.15 | UNKNOWN; _alloy: Ge 0.7, Si 0.3_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 7; `ORC-5Q5EBTXNTQ.6e355e` |  |
| Lattice a | 5.5261 Å | 298.15 | UNKNOWN; _alloy: Ge 0.45, Si 0.55_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 12; `ORC-5S4GAF5FE3.356078` |  |
| Lattice a | 5.6206 Å | 298.15 | UNKNOWN; _alloy: Ge 0.85, Si 0.15_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 4; `ORC-7T6IQWXFXY.b18def` |  |
| Lattice a | 5.4419 Å | 298.15 | UNKNOWN; _alloy: Ge 0.05, Si 0.95_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 20; `ORC-BQZ5ABZ7F4.7ecbe6` |  |
| Lattice a | 5.4624 Å | 298.15 | UNKNOWN; _alloy: Ge 0.15, Si 0.85_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 18; `ORC-CUUTNTHIZS.58aae3` |  |
| Lattice a | 5.5149 Å | 298.15 | UNKNOWN; _alloy: Ge 0.4, Si 0.6_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 13; `ORC-GKU5MV3P7E.086c15` |  |
| Lattice a | 5.5727 Å | 298.15 | UNKNOWN; _alloy: Ge 0.65, Si 0.35_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 8; `ORC-JP56BM762R.9a6349` |  |
| Lattice a | 5.4522 Å | 298.15 | UNKNOWN; _alloy: Ge 0.1, Si 0.9_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 19; `ORC-KXAW3E5P2E.0d4cbb` |  |
| Lattice a | 5.4722 Å | 298.15 | UNKNOWN; _alloy: Ge 0.2, Si 0.8_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 17; `ORC-LL2DV7ZXII.d4372f` |  |
| Lattice a | 5.4928 Å | 298.15 | UNKNOWN; _alloy: Ge 0.3, Si 0.7_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 15; `ORC-NLMAFVYUMR.2a59e2` |  |
| Lattice a | 5.6325 Å | 298.15 | UNKNOWN; _alloy: Ge 0.9, Si 0.1_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 3; `ORC-O5PJCGZXXA.06272a` |  |
| Lattice a | 5.6085 Å | 298.15 | UNKNOWN; _alloy: Ge 0.8, Si 0.2_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 5; `ORC-PFK34LLW2T.edadc9` |  |
| Lattice a | 5.5609 Å | 298.15 | UNKNOWN; _alloy: Ge 0.6, Si 0.4_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 9; `ORC-QJSERB2IML.6d356d` |  |
| Lattice a | 5.5492 Å | 298.15 | UNKNOWN; _alloy: Ge 0.55, Si 0.45_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 10; `ORC-UCB2I66HGT.11be68` |  |
| Lattice a | 5.6448 Å | 298.15 | UNKNOWN; _alloy: Ge 0.95, Si 0.05_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 2; `ORC-VJFFFM4TOI.47a77b` |  |
| Lattice a | 5.5038 Å | 298.15 | UNKNOWN; _alloy: Ge 0.35, Si 0.65_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 14; `ORC-WVVU7R4HUN.447685` |  |
| Lattice a | 5.4825 Å | 298.15 | UNKNOWN; _alloy: Ge 0.25, Si 0.75_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 16; `ORC-XEGLOCNGWU.5ac4a3` |  |
| Lattice a | 5.5373 Å | 298.15 | UNKNOWN; _alloy: Ge 0.5, Si 0.5_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 11; `ORC-XFH23FP7FX.cf3b2a` |  |
| lattice difference at at 25 c | 1.7 10^-4 nm | 373.15 | UNKNOWN; _alloy: Ge 0.201, Si 0.799_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 11; `ORC-DHNWV357J4` |  |
| lattice difference at at 25 c | 1.4 10^-4 nm | 373.15 | UNKNOWN; _alloy: Ge 0.347, Si 0.653_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 10; `ORC-IPDBQ4HMOJ` |  |
| lattice difference at at 25 c | 2.6 10^-4 nm | 373.15 | UNKNOWN; _alloy: Ge 0.513, Si 0.487_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 9; `ORC-ZCD7C44QMR` |  |
| lattice difference at at 25 c | 4.2 10^-4 nm | 473.15 | UNKNOWN; _alloy: Ge 0.347, Si 0.653_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 13; `ORC-4MYZCNPTBM` |  |
| lattice difference at at 25 c | 5.4 10^-4 nm | 473.15 | UNKNOWN; _alloy: Ge 0.513, Si 0.487_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 12; `ORC-KPLS7OSJPF` |  |
| lattice difference at at 25 c | 3.7 10^-4 nm | 473.15 | UNKNOWN; _alloy: Ge 0.201, Si 0.799_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 14; `ORC-RSSBUUIIIG` |  |
| lattice difference at at 25 c | 8.2 10^-4 nm | 573.15 | UNKNOWN; _alloy: Ge 0.513, Si 0.487_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 15; `ORC-NCFZ7O2W62` |  |
| lattice difference at at 25 c | 6.1 10^-4 nm | 573.15 | UNKNOWN; _alloy: Ge 0.201, Si 0.799_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 17; `ORC-PH6WSE3OMW` |  |
| lattice difference at at 25 c | 6.2 10^-4 nm | 573.15 | UNKNOWN; _alloy: Ge 0.347, Si 0.653_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 16; `ORC-VXLPBMIVBM` |  |
| lattice difference at at 25 c | 8.5 10^-4 nm | 673.15 | UNKNOWN; _alloy: Ge 0.201, Si 0.799_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 20; `ORC-2LUA42VKQW` |  |
| lattice difference at at 25 c | 11.4 10^-4 nm | 673.15 | UNKNOWN; _alloy: Ge 0.513, Si 0.487_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 18; `ORC-E7OV54GRN7` |  |
| lattice difference at at 25 c | 8.6 10^-4 nm | 673.15 | UNKNOWN; _alloy: Ge 0.347, Si 0.653_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 19; `ORC-MTHSGI2RF3` |  |
| lattice difference at at 25 c | 11.6 10^-4 nm | 773.15 | UNKNOWN; _alloy: Ge 0.347, Si 0.653_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 22; `ORC-DQ3I4PNKKR` |  |
| lattice difference at at 25 c | 11.3 10^-4 nm | 773.15 | UNKNOWN; _alloy: Ge 0.201, Si 0.799_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 23; `ORC-HWHL3HF73Y` |  |
| lattice difference at at 25 c | 14.3 10^-4 nm | 773.15 | UNKNOWN; _alloy: Ge 0.513, Si 0.487_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 21; `ORC-J4SFPVHQIV` |  |
| lattice difference at at 25 c | 14 10^-4 nm | 873.15 | UNKNOWN; _alloy: Ge 0.347, Si 0.653_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 25; `ORC-F7EZSCDYP3` |  |
| lattice difference at at 25 c | 17.7 10^-4 nm | 873.15 | UNKNOWN; _alloy: Ge 0.513, Si 0.487_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 24; `ORC-GF7ZKB3UFV` |  |
| lattice difference at at 25 c | 13.1 10^-4 nm | 873.15 | UNKNOWN; _alloy: Ge 0.201, Si 0.799_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 26; `ORC-IIIWYAUEHH` |  |
| lattice difference at at 25 c | 20.4 10^-4 nm | 973.15 | UNKNOWN; _alloy: Ge 0.513, Si 0.487_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 27; `ORC-CBRIKTJMQC` |  |
| lattice difference at at 25 c | 16 10^-4 nm | 973.15 | UNKNOWN; _alloy: Ge 0.201, Si 0.799_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 29; `ORC-D46AF7QIMI` |  |
| lattice difference at at 25 c | 16.6 10^-4 nm | 973.15 | UNKNOWN; _alloy: Ge 0.347, Si 0.653_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 28; `ORC-O4MLE7H54S` |  |
| lattice difference at at 25 c | 19.7 10^-4 nm | 1073.15 | UNKNOWN; _alloy: Ge 0.347, Si 0.653_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 31; `ORC-6LXBX5KVNM` |  |
| lattice difference at at 25 c | 17.6 10^-4 nm | 1073.15 | UNKNOWN; _alloy: Ge 0.201, Si 0.799_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 32; `ORC-BZVW5D4IO5` |  |
| lattice difference at at 25 c | 23.4 10^-4 nm | 1073.15 | UNKNOWN; _alloy: Ge 0.513, Si 0.487_ | unspecified | [2] Olesinski 1984; _cites ref. 64Dis_ | Table 3, p. 3, row 30; `ORC-LRMB4556YK` |  |
| lattice unspecified axis | 5.596 Å | 298.15 | UNKNOWN; _alloy: Ge 0.75, Si 0.25_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 6; `ORC-4TUXBPOPQM.d9e538` |  |
| lattice unspecified axis | 5.5842 Å | 298.15 | UNKNOWN; _alloy: Ge 0.7, Si 0.3_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 7; `ORC-5Q5EBTXNTQ.d64ecc` |  |
| lattice unspecified axis | 5.5261 Å | 298.15 | UNKNOWN; _alloy: Ge 0.45, Si 0.55_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 12; `ORC-5S4GAF5FE3.4e96ad` |  |
| lattice unspecified axis | 5.6206 Å | 298.15 | UNKNOWN; _alloy: Ge 0.85, Si 0.15_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 4; `ORC-7T6IQWXFXY.b83a93` |  |
| lattice unspecified axis | 5.4419 Å | 298.15 | UNKNOWN; _alloy: Ge 0.05, Si 0.95_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 20; `ORC-BQZ5ABZ7F4.f716a9` |  |
| lattice unspecified axis | 5.4624 Å | 298.15 | UNKNOWN; _alloy: Ge 0.15, Si 0.85_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 18; `ORC-CUUTNTHIZS.d8f3b2` |  |
| lattice unspecified axis | 5.5149 Å | 298.15 | UNKNOWN; _alloy: Ge 0.4, Si 0.6_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 13; `ORC-GKU5MV3P7E.7d1922` |  |
| lattice unspecified axis | 5.5727 Å | 298.15 | UNKNOWN; _alloy: Ge 0.65, Si 0.35_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 8; `ORC-JP56BM762R.b157e6` |  |
| lattice unspecified axis | 5.4522 Å | 298.15 | UNKNOWN; _alloy: Ge 0.1, Si 0.9_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 19; `ORC-KXAW3E5P2E.e6677b` |  |
| lattice unspecified axis | 5.4722 Å | 298.15 | UNKNOWN; _alloy: Ge 0.2, Si 0.8_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 17; `ORC-LL2DV7ZXII.244925` |  |
| lattice unspecified axis | 5.4928 Å | 298.15 | UNKNOWN; _alloy: Ge 0.3, Si 0.7_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 15; `ORC-NLMAFVYUMR.9ee909` |  |
| lattice unspecified axis | 5.6325 Å | 298.15 | UNKNOWN; _alloy: Ge 0.9, Si 0.1_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 3; `ORC-O5PJCGZXXA.105515` |  |
| lattice unspecified axis | 5.6085 Å | 298.15 | UNKNOWN; _alloy: Ge 0.8, Si 0.2_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 5; `ORC-PFK34LLW2T.f54d8f` |  |
| lattice unspecified axis | 5.5609 Å | 298.15 | UNKNOWN; _alloy: Ge 0.6, Si 0.4_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 9; `ORC-QJSERB2IML.acd367` |  |
| lattice unspecified axis | 5.5492 Å | 298.15 | UNKNOWN; _alloy: Ge 0.55, Si 0.45_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 10; `ORC-UCB2I66HGT.c29d24` |  |
| lattice unspecified axis | 5.6448 Å | 298.15 | UNKNOWN; _alloy: Ge 0.95, Si 0.05_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 2; `ORC-VJFFFM4TOI.83d5be` |  |
| lattice unspecified axis | 5.5038 Å | 298.15 | UNKNOWN; _alloy: Ge 0.35, Si 0.65_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 14; `ORC-WVVU7R4HUN.2d0930` |  |
| lattice unspecified axis | 5.4825 Å | 298.15 | UNKNOWN; _alloy: Ge 0.25, Si 0.75_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 16; `ORC-XEGLOCNGWU.65e450` |  |
| lattice unspecified axis | 5.5373 Å | 298.15 | UNKNOWN; _alloy: Ge 0.5, Si 0.5_ | unspecified | [2] Olesinski 1984 | Table 2, p. 3, row 11; `ORC-XFH23FP7FX.de32bd` |  |

## Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

1. C. Bergman, R. Chastel, R. Castanet, Thermodynamic investigation on the si-ge binary system by calorimetry and knudsen cell mass spectrometry, JPE 13, 113-118 (1992). [doi:10.1007/bf02667471](https://doi.org/10.1007/bf02667471)
2. R. W. Olesinski, G. J. Abbaschian, The Ge−Si (Germanium-Silicon) system, Bulletin of Alloy Phase Diagrams 5, 180-183 (1984). [doi:10.1007/bf02868957](https://doi.org/10.1007/bf02868957)

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735569
- R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735859
- R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735891
- 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 the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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).

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_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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 ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).