# Ce–Cu–Nd–Pr–Sm system > Ce–Cu–Nd–Pr–Sm system: 18 accepted literature values (formation 18) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/CE-CU-ND-PR-SM.html · Markdown: https://data.orchid-project.org/systems/CE-CU-ND-PR-SM.md 18 accepted literature values from 1 paper(s) (model 11, unspecified 7); 0 calculated phase diagram(s). Data: [JSON](https://data.orchid-project.org/literature/systems/CE-CU-ND-PR-SM.json) · [CSV](https://data.orchid-project.org/systems/CE-CU-ND-PR-SM.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CE-CU-ND-PR-SM) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CE-CU-ND-PR-SM.html) · [Markdown](https://data.orchid-project.org/systems/CE-CU-ND-PR-SM.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | model | 11 | | unspecified | 7 | Table: Accepted values by property group | Property group | Values | |---|---:| | formation | 18 | ## 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, Ce–Cu–Nd–Pr–Sm system (18) | Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote | |---|---|---:|---:|---|---:|---:|---|---|---| | Cu2R | | -36 kJ/mol (basis unstated) | | unspecified | | | [1] Zhuang 1996; _cites ref. 88Sub3_ | Table 10, p. 13, row 12; `ORC-G6UZNDXXRT` | | | Cu2R | | -30.9 kJ/mol (basis unstated) | | model | | | [1] Zhuang 1996 | Table 10, p. 13, row 13; `ORC-W3VW4REHYJ` | | | Cu2R | | -14.8 kJ/mol (basis unstated) | | model | | | [1] Zhuang 1996 | Table 10, p. 13, row 11; `ORC-232VUJ6DNX` | | | Cu2R | | -14.8 kJ/mol (basis unstated) | | unspecified | | | [1] Zhuang 1996; _cites ref. 94Fit_ | Table 10, p. 13, row 14; `ORC-MIY3BYARDU` | | | Cu4R | | -21.9 kJ/mol (basis unstated) | | model | | | [1] Zhuang 1996 | Table 10, p. 13, row 10; `ORC-JEWZ4BEQXT` | | | Cu4R | | -16.4 kJ/mol (basis unstated) | | unspecified | | | [1] Zhuang 1996; _cites ref. 88Sub3_ | Table 10, p. 13, row 9; `ORC-4A4EL2AEHY` | | | Cu4R | | -12.4 kJ/mol (basis unstated) | | model | | | [1] Zhuang 1996 | Table 10, p. 13, row 8; `ORC-4AVZOAT2ZN` | | | Cu5R | | -20.5 kJ/mol (basis unstated) | | unspecified | | | [1] Zhuang 1996; _cites ref. 88Sub3_ | Table 10, p. 13, row 6; `ORC-Q3AHDWSZDE` | | | Cu5R | | -18.6 kJ/mol (basis unstated) | | model | | | [1] Zhuang 1996 | Table 10, p. 13, row 7; `ORC-TQ6VAIDV4Z` | | | Cu5R | | -11.5 kJ/mol (basis unstated) | | model | | | [1] Zhuang 1996 | Table 10, p. 13, row 5; `ORC-5OT2NXQPCJ` | | | Cu6R | | -20.3 kJ/mol (basis unstated) | | unspecified | | | [1] Zhuang 1996; _cites ref. 88Sub3_ | Table 10, p. 13, row 2; `ORC-C2ACUVFH3P` | | | Cu6R | | -16 kJ/mol (basis unstated) | | model | | | [1] Zhuang 1996 | Table 10, p. 13, row 3; `ORC-EQTPBLHAYD` | | | Cu6R | | -12.7 kJ/mol (basis unstated) | | model | | | [1] Zhuang 1996 | Table 10, p. 13, row 15; `ORC-WAMJI6QFYO.16c222` | | | Cu6R | | -10.1 kJ/mol (basis unstated) | | model | | | [1] Zhuang 1996 | Table 10, p. 13, row 1; `ORC-4ANBZJ53MU` | | | Cu6R | | -10.1 kJ/mol (basis unstated) | | unspecified | | | [1] Zhuang 1996; _cites ref. 94Fit_ | Table 10, p. 13, row 4; `ORC-YEGXOO2TPJ` | | | CuR | | -32.6 kJ/mol (basis unstated) | | unspecified | | | [1] Zhuang 1996; _cites ref. 88Sub3_ | Table 10, p. 13, row 16; `ORC-TO6HVOW5QA` | | | CuR | | -30.1 kJ/mol (basis unstated) | | model | | | [1] Zhuang 1996 | Table 10, p. 13, row 17; `ORC-NGF4T6FNB7` | | | CuR | | -12.7 kJ/mol (basis unstated) | | model | | | [1] Zhuang 1996 | Table 10, p. 13, row 15; `ORC-WAMJI6QFYO.0931de` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. W. Zhuang, Z. -Y. Qiao, S. Wei, J. Shen, Thermodynamic evaluation of the Cu-R (R: Ce, Pr, Nd, Sm) binary systems, JPE 17, 508-521 (1996). [doi:10.1007/bf02665998](https://doi.org/10.1007/bf02665998) ## 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=\, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).