# B–Dy system

> B–Dy system: 37 accepted literature values (invariant reaction 24, formation 13) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/B-DY.html · Markdown: https://data.orchid-project.org/systems/B-DY.md

37 accepted literature values from 1 paper(s) (experimental 3, model 27, DFT 7); 0 calculated phase diagram(s).

Data: [JSON](https://data.orchid-project.org/literature/systems/B-DY.json) · [CSV](https://data.orchid-project.org/systems/B-DY.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#B-DY) · [phases (11)](https://data.orchid-project.org/phases/pages/B-DY.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/B-DY.html) · [Markdown](https://data.orchid-project.org/systems/B-DY.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 3 |
| model | 27 |
| DFT | 7 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 24 |
| formation | 13 |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/B/B-DY.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/B/B-DY.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the B–Dy system (24)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 2773 | congruent melting: L ↔ DyB4 | L: B 0.8; DyB4: B 0.8, Dy 0.2 | model | [1] Li 2020; _cites ref. 23_ | Table 8, p. 30, row 1; `ORC-HJVDRNAXWB` |  |
| 2767.1 | congruent melting: L ↔ DyB4 | L: B 0.8; DyB4: B 0.8, Dy 0.2 | model | [1] Li 2020 | Table 8, p. 30, row 3; `ORC-QG6FXK74BE` |  |
| 2749.3 | congruent melting: L ↔ DyB4 | L: B 0.8; DyB4: B 0.8, Dy 0.2 | model | [1] Li 2020; _cites ref. 25_ | Table 8, p. 30, row 2; `ORC-PYQOMUOZHP` |  |
| 2475.9 | peritectic: L + DyB4 ↔ DyB6 | DyB4: B 0.8, Dy 0.2; DyB6: B 0.857143, Dy 0.142857 | model | [1] Li 2020; _cites ref. 25_ | Table 8, p. 30, row 5; `ORC-CHCIZGVC2S` |  |
| 2473 | peritectic: L + DyB4 ↔ DyB6 | L: B 0.88; DyB4: B 0.8, Dy 0.2; DyB6: B 0.857143, Dy 0.142857 | model | [1] Li 2020; _cites ref. 23_ | Table 8, p. 30, row 4; `ORC-U5HG5L3LTW` |  |
| 2472 | peritectic: L + DyB4 ↔ DyB6 | DyB4: B 0.8, Dy 0.2; DyB6: B 0.857143, Dy 0.142857 | experimental | [1] Li 2020; _cites ref. 33_ | Table 8, p. 30, row 6; `ORC-EECG4EVOUH` |  |
| 2472 | peritectic: L + DyB4 ↔ DyB6 | L: B 0.955; DyB4: B 0.8, Dy 0.2; DyB6: B 0.857143, Dy 0.142857 | model | [1] Li 2020 | Table 8, p. 30, row 7; `ORC-QMOS7BWK2R` |  |
| 2423 | peritectic: L + DyB12 ↔ DyB66 | DyB12: B 0.923077, Dy 0.076923; DyB66: B 0.985075, Dy 0.014925 | experimental | [1] Li 2020; _cites ref. 34_ | Table 8, p. 30, row 12; `ORC-6YDLA75O7T` |  |
| 2378.8 | peritectic: L + DyB6 ↔ DyB12 | DyB6: B 0.857143, Dy 0.142857; DyB12: B 0.923077, Dy 0.076923 | model | [1] Li 2020; _cites ref. 25_ | Table 8, p. 30, row 9; `ORC-2IZTVX3TH3` |  |
| 2373 | peritectic: L + DyB4 ↔ DyB2 | L: B 0.62; DyB4: B 0.8, Dy 0.2; DyB2: B 0.666667, Dy 0.333333 | model | [1] Li 2020; _cites ref. 23_ | Table 8, p. 30, row 15; `ORC-4ZKYW2GBFS` |  |
| 2373 | peritectic: L + DyB6 ↔ DyB12 | L: B 0.93; DyB6: B 0.857143, Dy 0.142857; DyB12: B 0.923077, Dy 0.076923 | model | [1] Li 2020; _cites ref. 23_ | Table 8, p. 30, row 8; `ORC-KSCMBYG4WC` |  |
| 2371.3 | peritectic: L + DyB6 ↔ DyB12 | L: B 0.978; DyB6: B 0.857143, Dy 0.142857; DyB12: B 0.923077, Dy 0.076923 | model | [1] Li 2020 | Table 8, p. 30, row 10; `ORC-NHNEF3DWP4` |  |
| 2369.8 | peritectic: L + DyB4 ↔ DyB2 | L: B 0.515; DyB4: B 0.8, Dy 0.2; DyB2: B 0.666667, Dy 0.333333 | model | [1] Li 2020 | Table 8, p. 30, row 17; `ORC-SORNOUZICD` |  |
| 2365 | peritectic: L + DyB12 ↔ DyB66 | L: B 0.979; DyB12: B 0.923077, Dy 0.076923; DyB66: B 0.985075, Dy 0.014925 | model | [1] Li 2020 | Table 8, p. 30, row 14; `ORC-PFTVKG7ZIN` |  |
| 2364.1 | peritectic: L + DyB4 ↔ DyB2 | DyB4: B 0.8, Dy 0.2; DyB2: B 0.666667, Dy 0.333333 | model | [1] Li 2020; _cites ref. 25_ | Table 8, p. 30, row 16; `ORC-LVPSCU74DV` |  |
| 2347 | peritectic: L + DyB12 ↔ DyB66 | DyB12: B 0.923077, Dy 0.076923; DyB66: B 0.985075, Dy 0.014925 | model | [1] Li 2020; _cites ref. 25_ | Table 8, p. 30, row 13; `ORC-36JATRGZO3` |  |
| 2346.1 | eutectic: L ↔ DyB66 + β-B | L: B 0.998; DyB66: B 0.985075, Dy 0.014925 | model | [1] Li 2020 | Table 8, p. 30, row 20; `ORC-GHVZBKZSL5` |  |
| 2343 | eutectic: L ↔ DyB66 + β-B | L: B 0.995; DyB66: B 0.985075, Dy 0.014925 | model | [1] Li 2020; _cites ref. 25_ | Table 8, p. 30, row 19; `ORC-LXLR5HYGYV` |  |
| 2298 | peritectic: L + DyB12 ↔ DyB66 | DyB12: B 0.923077, Dy 0.076923; DyB66: B 0.985075, Dy 0.014925 | model | [1] Li 2020; _cites ref. 23_ | Table 8, p. 30, row 11; `ORC-NSXASOLPMS` |  |
| 1673 | eutectic: L ↔ DyB2 + α-Dy | DyB2: B 0.666667, Dy 0.333333 | model | [1] Li 2020; _cites ref. 23_ | Table 8, p. 30, row 23; `ORC-WGLGJDNEKJ` |  |
| 1654 | peritectic: L+ β -Dy ↔α -Dy |  | model | [1] Li 2020; _cites ref. 25_ | Table 8, p. 30, row 21; `ORC-HYOK4P3GQH` |  |
| 1639.7 | peritectic: L+ β -Dy ↔α -Dy | L: B 0.028 | model | [1] Li 2020 | Table 8, p. 30, row 22; `ORC-ODL22L5YHO` |  |
| 1619.1 | eutectic: L ↔ DyB2 + α-Dy | L: B 0.039; DyB2: B 0.666667, Dy 0.333333 | model | [1] Li 2020; _cites ref. 25_ | Table 8, p. 30, row 24; `ORC-RYDFNMLADM` |  |
| 1608.7 | eutectic: L ↔ DyB2 + α-Dy | L: B 0.048; DyB2: B 0.666667, Dy 0.333333 | model | [1] Li 2020 | Table 8, p. 30, row 25; `ORC-WGKQRN5OX2` |  |

## Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from [dft_parity.json](https://data.orchid-project.org/literature/dft_parity.json).

Table: Enthalpies of formation, B–Dy system (13)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| DyB12 | [DyB12](https://data.orchid-project.org/compounds/DyB12.html) | -24.212 kJ/mol-atom | 298.15 | model | -24.129 (mp-aaackujk) | -24.171 (oqmd-28341) | [1] Li 2020 | Table 2, p. 25, row 25; `ORC-N2YWGYXLIL` |  |
| DyB12 |  | 24.038 kJ/mol-atom | 298.15 | DFT |  |  | [1] Li 2020; _cites ref. 30_ | Table 2, p. 25, row 24; `ORC-MWS3X4GNQZ` |  |
| DyB2 | [DyB2](https://data.orchid-project.org/compounds/DyB2.html) | -58.019 kJ/mol-atom | 298.15 | model | -54.16 (mp-aaaaadbd) | -54.212 (oqmd-8332) | [1] Li 2020 | Table 2, p. 25, row 18; `ORC-4RHPQXJ6PD` |  |
| DyB2 |  | -54.44 kJ/mol-atom | 298.15 | DFT |  |  | [1] Li 2020; _cites ref. 38_ | Table 2, p. 25, row 15; `ORC-RGYHX5NTA6` |  |
| DyB2 |  | -54.135 kJ/mol-atom | 298.15 | DFT |  |  | [1] Li 2020; _cites ref. 30_ | Table 2, p. 25, row 16; `ORC-IBF5J2DKF2` |  |
| DyB2 |  | -54.038 kJ/mol-atom | 298.15 | DFT |  |  | [1] Li 2020; _cites ref. 31_ | Table 2, p. 25, row 17; `ORC-W7H4CSTW5Q` |  |
| DyB2 | [DyB2](https://data.orchid-project.org/compounds/DyB2.html) | -30.2 kJ/mol-atom ± 1.3 | 298.15 | experimental | -54.16 (mp-aaaaadbd) | -54.212 (oqmd-8332) | [1] Li 2020; _cites ref. 37_ | Table 2, p. 25, row 14; `ORC-QXJEHWNYE2` |  |
| DyB4 |  | -57.692 kJ/mol-atom | 298.15 | DFT |  |  | [1] Li 2020; _cites ref. 30_ | Table 2, p. 25, row 19; `ORC-TENQ3OWTJ4` |  |
| DyB4 |  | -57.596 kJ/mol-atom | 298.15 | DFT |  |  | [1] Li 2020; _cites ref. 31_ | Table 2, p. 25, row 20; `ORC-L2UMAADW6F` |  |
| DyB4 | [DyB4](https://data.orchid-project.org/compounds/DyB4.html) | -55.007 kJ/mol-atom | 298.15 | model | -57.547 (mp-aaaaaeap) | -57.764 (oqmd-12458) | [1] Li 2020 | Table 2, p. 25, row 21; `ORC-HMI32WVYYG` |  |
| DyB6 | [DyB6](https://data.orchid-project.org/compounds/DyB6.html) | -38.94 kJ/mol-atom | 298.15 | model | -38.604 (mp-aaabgisl) | -38.617 (oqmd-19358) | [1] Li 2020 | Table 2, p. 25, row 23; `ORC-ZLCM5EYPHB` |  |
| DyB6 |  | -38.558 kJ/mol-atom | 298.15 | DFT |  |  | [1] Li 2020; _cites ref. 31_ | Table 2, p. 25, row 22; `ORC-VWHMPRAAJZ` |  |
| DyB66 |  | -4.686 kJ/mol-atom | 298.15 | model |  |  | [1] Li 2020 | Table 2, p. 25, row 26; `ORC-MHBR4IYGDG` |  |

## Sources

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

1. S. Li, M.H. Rong, L. Xu, Q. Wei, J. Wang, G.H. Rao et al., Thermodynamic assessment of the RE-B (RE = Ce, Dy, Lu) binary systems, Calphad 68, 101740 (2020). [doi:10.1016/j.calphad.2020.101740](https://doi.org/10.1016/j.calphad.2020.101740)

## 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-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); 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); 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.

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_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/).