# La–Pr–Si system

> La–Pr–Si system: 55 accepted literature values (invariant reaction 55) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

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55 accepted literature values from 1 paper(s) (model 14, unspecified 41); 0 calculated phase diagram(s).

Data: [JSON](https://data.orchid-project.org/literature/systems/LA-PR-SI.json) · [CSV](https://data.orchid-project.org/systems/LA-PR-SI.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#LA-PR-SI) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/LA-PR-SI.html) · [Markdown](https://data.orchid-project.org/systems/LA-PR-SI.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| model | 14 |
| unspecified | 41 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 55 |

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the La–Pr–Si system (55)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1908.15 | peritectic: L + La3Si5 -> LaSi2 |  | unspecified | [1] Xu 2020; _cites ref. 23_ | Table 4, p. 10, row 37; `ORC-2KKNH5W53K` |  |
| 1894.35 | eutectic: L -> LaSi + La3Si5 |  | model | [1] Xu 2020 | Table 4, p. 10, row 25; `ORC-N34XURCRCW` |  |
| 1886.85 | eutectic: L -> PrSi + β-Pr5Si9 |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 64; `ORC-K5AG2GJ6VU` |  |
| 1874.05 | eutectic: L -> LaSi + La3Si5 |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 26; `ORC-DBXXX7F5EW` |  |
| 1873.15 | peritectic: L + La3Si5 -> LaSi2 |  | unspecified | [1] Xu 2020; _cites ref. 41_ | Table 4, p. 10, row 35; `ORC-R72WNCIPFH` |  |
| 1873.15 | peritectic: L + La3Si5 -> LaSi2 |  | unspecified | [1] Xu 2020; _cites ref. 18_ | Table 4, p. 10, row 36; `ORC-VYQXUSVRHU` |  |
| 1856.75 | eutectic: L -> PrSi + β-Pr5Si9 |  | model | [1] Xu 2020 | Table 4, p. 10, row 63; `ORC-7767ELY3GA` |  |
| 1855.25 | peritectic: L + La3Si5 -> LaSi2 |  | model | [1] Xu 2020 | Table 4, p. 10, row 33; `ORC-SU7Y2CNRBR` |  |
| 1853.15 | peritectic: L + La3Si5 -> LaSi2 |  | unspecified | [1] Xu 2020; _cites ref. 27_ | Table 4, p. 10, row 40; `ORC-27L5SDLCXP` |  |
| 1848.55 | peritectic: L + La3Si5 -> LaSi2 |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 34; `ORC-WXNZ6367OH` |  |
| 1843.15 | peritectic: L + LaSi -> La5Si4 |  | unspecified | [1] Xu 2020; _cites ref. 18_ | Table 4, p. 10, row 19; `ORC-G6P4IAWSZS` |  |
| 1834.15 | peritectic: L + LaSi -> La5Si4 |  | unspecified | [1] Xu 2020; _cites ref. 41_ | Table 4, p. 10, row 18; `ORC-V63S5WXPDX` |  |
| 1820.15 | eutectic: L -> LaSi + La3Si5 |  | unspecified | [1] Xu 2020; _cites ref. 41_ | Table 4, p. 10, row 27; `ORC-PIX33DJD4P` |  |
| 1815.15 | eutectic: L -> PrSi + β-Pr5Si9 |  | unspecified | [1] Xu 2020; _cites ref. 19_ | Table 4, p. 10, row 65; `ORC-BS5NOAQANZ` |  |
| 1805.15 | peritectic: L + PrSi -> Pr5Si4 |  | unspecified | [1] Xu 2020; _cites ref. 19_ | Table 4, p. 10, row 57; `ORC-UJQXYTRXQU` |  |
| 1801.15 | eutectic: L -> LaSi + La3Si5 |  | unspecified | [1] Xu 2020; _cites ref. 18_ | Table 4, p. 10, row 28; `ORC-HVM4KTVKC6` |  |
| 1795.15 | peritectic: L + PrSi -> Pr5Si4 |  | model | [1] Xu 2020 | Table 4, p. 10, row 55; `ORC-S7W6YGVO6K` |  |
| 1794.65 | peritectic: L + PrSi -> Pr5Si4 |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 56; `ORC-YKXG4B3IRH` |  |
| 1793.15 | peritectic: L + La3Si5 -> LaSi2 |  | unspecified | [1] Xu 2020; _cites ref. 26_ | Table 4, p. 10, row 39; `ORC-4UKJJU54CT` |  |
| 1784.15 | peritectic: L + PrSi -> Pr5Si4 |  | unspecified | [1] Xu 2020; _cites ref. 47_ | Table 4, p. 10, row 58; `ORC-5GM3PCNB4D` |  |
| 1773.15 | peritectic: L + La3Si5 -> LaSi2 |  | unspecified | [1] Xu 2020; _cites ref. 25_ | Table 4, p. 10, row 38; `ORC-QXWTKLEL5Z` |  |
| 1755.15 | peritectic: L + LaSi -> La5Si4 |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 17; `ORC-W3VP5ZY45G` |  |
| 1754.85 | peritectic: L + LaSi -> La5Si4 |  | model | [1] Xu 2020 | Table 4, p. 10, row 16; `ORC-TPFUQ6VPUH` |  |
| 1743.15 | peritectic: L + La5Si4 -> La3Si2 |  | unspecified | [1] Xu 2020; _cites ref. 18_ | Table 4, p. 10, row 14; `ORC-ME4RHIKKO5` |  |
| 1716.15 | peritectic: L + LaSi -> La5Si4 |  | unspecified | [1] Xu 2020; _cites ref. 23_ | Table 4, p. 10, row 20; `ORC-TMUFFIPYWB` |  |
| 1690.15 | peritectic: L + Pr5Si4 -> Pr5Si3 |  | unspecified | [1] Xu 2020; _cites ref. 19_ | Table 4, p. 10, row 52; `ORC-QN62OXVD6V` |  |
| 1689.85 | peritectic: L + Pr5Si4 -> Pr5Si3 |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 51; `ORC-KGJPZC76SD` |  |
| 1685.15 | peritectic: L + Pr5Si4 -> Pr5Si3 |  | unspecified | [1] Xu 2020; _cites ref. 47_ | Table 4, p. 10, row 53; `ORC-5QDQIYFNGF` |  |
| 1670.75 | peritectic: L + Pr5Si4 -> Pr5Si3 |  | model | [1] Xu 2020 | Table 4, p. 10, row 50; `ORC-FGIFFUEGKT` |  |
| 1601.55 | peritectic: L + La5Si4 -> La3Si2 |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 13; `ORC-SLPCTY6EPK` |  |
| 1596.45 | peritectic: L + La5Si4 -> La3Si2 |  | model | [1] Xu 2020 | Table 4, p. 10, row 12; `ORC-7CFCIHZZ3U` |  |
| 1589.15 | peritectic: L + La3Si2 -> La5Si3 |  | unspecified | [1] Xu 2020; _cites ref. 23_ | Table 4, p. 10, row 11; `ORC-7ASE5LJTIX` |  |
| 1580.15 | peritectic: L + La5Si4 -> La3Si2 |  | unspecified | [1] Xu 2020; _cites ref. 23_ | Table 4, p. 10, row 15; `ORC-75VJI7P4Y2` |  |
| 1544.75 | peritectic: L + La3Si2 -> La5Si3 |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 9; `ORC-OMDNRPVAUJ` |  |
| 1540.35 | peritectic: L + La3Si2 -> La5Si3 |  | model | [1] Xu 2020 | Table 4, p. 10, row 8; `ORC-5RYIW4QF3P` |  |
| 1533.15 | peritectic: L + La3Si2 -> La5Si3 |  | unspecified | [1] Xu 2020; _cites ref. 18_ | Table 4, p. 10, row 10; `ORC-G6MTNG246N` |  |
| 1492.15 | eutectic: L -> LaSi2 + (Si) |  | model | [1] Xu 2020 | Table 4, p. 10, row 41; `ORC-KBTJC7KWVN` |  |
| 1486.35 | eutectic: L -> LaSi2 + (Si) |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 42; `ORC-AJPA6YAZFX` |  |
| 1485.15 | eutectic: L -> (Si) + β-Pr5Si9 |  | unspecified | [1] Xu 2020; _cites ref. 19_ | Table 4, p. 10, row 79; `ORC-DINHUNCR7Z` |  |
| 1480.25 | eutectic: L -> (Si) + β-Pr5Si9 |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 78; `ORC-CL64GEO52K` |  |
| 1478.15 | eutectic: L -> LaSi2 + (Si) |  | unspecified | [1] Xu 2020; _cites ref. 18_ | Table 4, p. 10, row 44; `ORC-RI33ZQSVHN` |  |
| 1477.15 | eutectic: L -> LaSi2 + (Si) |  | unspecified | [1] Xu 2020; _cites ref. 41_ | Table 4, p. 10, row 43; `ORC-4GAW3LKXU4` |  |
| 1465.05 | eutectic: L -> (Si) + β-Pr5Si9 |  | model | [1] Xu 2020 | Table 4, p. 10, row 77; `ORC-D7V2CVK7FZ` |  |
| 1108.05 | metatectic/catatectic: (γLa) -> L + (βLa) |  | model | [1] Xu 2020 | Table 4, p. 10, row 1; `ORC-HDLMVMK7SN` |  |
| 1091.15 | metatectic/catatectic: (γLa) -> L + (βLa) |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 2; `ORC-QXW33K2P72` |  |
| 1088.15 | metatectic/catatectic: (γLa) -> L + (βLa) |  | unspecified | [1] Xu 2020; _cites ref. 18_ | Table 4, p. 10, row 3; `ORC-ZYIEZ7XIQJ` |  |
| 1063.85 | metatectic/catatectic: (αPr) -> L + (βPr) |  | model | [1] Xu 2020 | Table 4, p. 10, row 45; `ORC-7ZUSEIB7MV` |  |
| 1047.95 | metatectic/catatectic: (αPr) -> L + (βPr) |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 46; `ORC-O5C2PP5Z2W` |  |
| 1005.15 | eutectic: L -> (αPr) + Pr5Si3 |  | unspecified | [1] Xu 2020; _cites ref. 19_ | Table 4, p. 10, row 49; `ORC-R4B6MLT6RX` |  |
| 1003.95 | eutectic: L -> (αPr) + Pr5Si3 |  | model | [1] Xu 2020 | Table 4, p. 10, row 47; `ORC-L4IT3UVFWK` |  |
| 1000.55 | eutectic: L -> (αPr) + Pr5Si3 |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 48; `ORC-IRF7CG2XWV` |  |
| 997.95 | eutectic: L -> (βLa) + La5Si3 |  | model | [1] Xu 2020 | Table 4, p. 10, row 4; `ORC-NRTZSR7V7Z` |  |
| 995.15 | eutectic: L -> (βLa) + La5Si3 |  | unspecified | [1] Xu 2020; _cites ref. 41_ | Table 4, p. 10, row 6; `ORC-ALEVM3CBX2` |  |
| 995.15 | eutectic: L -> (βLa) + La5Si3 |  | unspecified | [1] Xu 2020; _cites ref. 18_ | Table 4, p. 10, row 7; `ORC-B7TQYUGSFB` |  |
| 984.35 | eutectic: L -> (βLa) + La5Si3 |  | unspecified | [1] Xu 2020; _cites ref. 28_ | Table 4, p. 10, row 5; `ORC-AGQ5KHGSC6` |  |

## Sources

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

1. Kai Xu, Keke Chang, Xiaobing Zhou, Leilei Chen, Junwen Liu, Zixuan Deng et al., Thermodynamic descriptions of the light rare‐earth elements in silicon carbide ceramics, J Am Ceram Soc 103, 3812-3825 (2020). [doi:10.1111/jace.17031](https://doi.org/10.1111/jace.17031)

## 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 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_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/).