# B–Nd system > B–Nd system: 31 accepted literature values (formation 29, invariant reaction 2) 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-ND.html · Markdown: https://data.orchid-project.org/systems/B-ND.md 31 accepted literature values from 1 paper(s) (experimental 15, model 16); 0 calculated phase diagram(s). Data: [JSON](https://data.orchid-project.org/literature/systems/B-ND.json) · [CSV](https://data.orchid-project.org/systems/B-ND.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#B-ND) · [phases (10)](https://data.orchid-project.org/phases/pages/B-ND.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/B-ND.html) · [Markdown](https://data.orchid-project.org/systems/B-ND.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 15 | | model | 16 | Table: Accepted values by property group | Property group | Values | |---|---:| | invariant reaction | 2 | | formation | 29 | Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/B/B-ND.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/B/B-ND.json) · [CALPHAD hull NdB-16Zho-corrected](https://data.orchid-project.org/hulls/calphad-sgte/B/B-ND--NdB-16Zho-corrected.json) · [CALPHAD hull NdB-95Hal-LB](https://data.orchid-project.org/hulls/calphad-sgte/B/B-ND--NdB-95Hal-LB.json) · [CALPHAD hull NdB-98Che](https://data.orchid-project.org/hulls/calphad-sgte/B/B-ND--NdB-98Che.json) ## Invariant reactions (literature) Table: Invariant reactions reported in the literature for the B–Nd system (2) | T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote | |---:|---|---|---|---|---|---| | 2883.15 | congruent melting: NdB6 \<-> L | NdB6: B 0.857143, Nd 0.142857; L: B 0.857143, Nd 0.142857 | experimental | [1] Hallemans 1995; _cites Spear 1976_ | Table 4, p. 5, row 2; `ORC-FRY43XWKRN` | | | 2879.15 | congruent melting: NdB6 \<-> L | NdB6: B 0.857143, Nd 0.142857; L: B 0.857143, Nd 0.142857 | model | [1] Hallemans 1995 | Table 4, p. 5, row 1; `ORC-XK466XV57G` | | ## Other properties ### Formation (29) Table: Formation, B–Nd system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Gibbs energy of formation; _printed: ΔfG0 (NdB4)_ | -55290 unknown | 1600.15 | NdB4; _alloy: Nd 0.2_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 2; `ORC-EBXCTKEGBS.b33dd3` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB4)_ | -44470 unknown | 1600.15 | NdB4; _alloy: Nd 0.2_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 1; `ORC-XRXKHXFJUP.3012b2` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB6)_ | -47230 unknown | 1600.15 | NdB6; _alloy: Nd 0.142857_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 2; `ORC-EBXCTKEGBS.ace887` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB6)_ | -36550 unknown | 1600.15 | NdB6; _alloy: Nd 0.142857_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 1; `ORC-XRXKHXFJUP.545d59` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB66)_ | -12230 unknown | 1600.15 | NdB66; _alloy: Nd 0.014925_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 2; `ORC-EBXCTKEGBS.971e43` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB66)_ | -5410 unknown | 1600.15 | NdB66; _alloy: Nd 0.014925_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 1; `ORC-XRXKHXFJUP.cd25e8` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB4)_ | -42810 unknown | 1700.15 | NdB4; _alloy: Nd 0.2_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 3; `ORC-53KROEWEZR.dd9e45` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB6)_ | -35650 unknown | 1700.15 | NdB6; _alloy: Nd 0.142857_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 3; `ORC-53KROEWEZR.36d365` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB6)_ | -45060 unknown | 1700.15 | NdB6; _alloy: Nd 0.142857_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 4; `ORC-PD4QYZBG6A.f98261` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB66)_ | -5300 unknown | 1700.15 | NdB66; _alloy: Nd 0.014925_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 3; `ORC-53KROEWEZR.e7ca27` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB66)_ | -11380 unknown | 1700.15 | NdB66; _alloy: Nd 0.014925_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 4; `ORC-PD4QYZBG6A.a06630` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB4)_ | -41140 unknown | 1800.15 | NdB4; _alloy: Nd 0.2_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 5; `ORC-AJVLX2PJLT.02faf6` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB4)_ | -50590 unknown | 1800.15 | NdB4; _alloy: Nd 0.2_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 6; `ORC-HZ5WAAJVNH.a93539` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB6)_ | -34750 unknown | 1800.15 | NdB6; _alloy: Nd 0.142857_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 5; `ORC-AJVLX2PJLT.85d2a9` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB6)_ | -43220 unknown | 1800.15 | NdB6; _alloy: Nd 0.142857_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 6; `ORC-HZ5WAAJVNH.629970` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB66)_ | -5190 unknown | 1800.15 | NdB66; _alloy: Nd 0.014925_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 5; `ORC-AJVLX2PJLT.058800` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB66)_ | -10470 unknown | 1800.15 | NdB66; _alloy: Nd 0.014925_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 6; `ORC-HZ5WAAJVNH.825074` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB4)_ | -39480 unknown | 1900.15 | NdB4; _alloy: Nd 0.2_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 7; `ORC-NPC5UXGU2M.bdb0d0` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB4)_ | -48350 unknown | 1900.15 | NdB4; _alloy: Nd 0.2_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 8; `ORC-VS4BQA3IRH.61a5e0` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB6)_ | -33850 unknown | 1900.15 | NdB6; _alloy: Nd 0.142857_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 7; `ORC-NPC5UXGU2M.d053d4` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB6)_ | -41480 unknown | 1900.15 | NdB6; _alloy: Nd 0.142857_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 8; `ORC-VS4BQA3IRH.c2ffb7` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB66)_ | -5070 unknown | 1900.15 | NdB66; _alloy: Nd 0.014925_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 7; `ORC-NPC5UXGU2M.e55335` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB66)_ | -9730 unknown | 1900.15 | NdB66; _alloy: Nd 0.014925_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 8; `ORC-VS4BQA3IRH.613969` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB4)_ | -37820 unknown | 2000.15 | NdB4; _alloy: Nd 0.2_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 9; `ORC-OA4ENATTSZ.315391` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB4)_ | -46450 unknown | 2000.15 | NdB4; _alloy: Nd 0.2_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 10; `ORC-VVLQBVDIO4.259d65` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB6)_ | -32950 unknown | 2000.15 | NdB6; _alloy: Nd 0.142857_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 9; `ORC-OA4ENATTSZ.269ad5` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB6)_ | -39470 unknown | 2000.15 | NdB6; _alloy: Nd 0.142857_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 10; `ORC-VVLQBVDIO4.c95709` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB66)_ | -4960 unknown | 2000.15 | NdB66; _alloy: Nd 0.014925_ | model | [1] Hallemans 1995 | Table 5, p. 5, row 9; `ORC-OA4ENATTSZ.edb11e` | | | Gibbs energy of formation; _printed: ΔfG0 (NdB66)_ | -8730 unknown | 2000.15 | NdB66; _alloy: Nd 0.014925_ | experimental | [1] Hallemans 1995; _cites Storms 1981_ [doi](https://doi.org/10.1021/j150611a015) | Table 5, p. 5, row 10; `ORC-VVLQBVDIO4.a3aa97` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. B. Hallemans, P. Wollants, J. R. Roos, Thermodynamic assessment of the Fe-Nd-B phase diagram, JPE 16, 137-149 (1995). [doi:10.1007/bf02664851](https://doi.org/10.1007/bf02664851) ## 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=\, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).