# Er–Ir system > Er–Ir system: 31 accepted literature values (crystal structure 31) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/ER-IR.html · Markdown: https://data.orchid-project.org/systems/ER-IR.md 31 accepted literature values from 1 paper(s) (unspecified 31); 0 calculated phase diagram(s). Data: [JSON](https://data.orchid-project.org/literature/systems/ER-IR.json) · [CSV](https://data.orchid-project.org/systems/ER-IR.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#ER-IR) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/ER-IR.html) · [Markdown](https://data.orchid-project.org/systems/ER-IR.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | unspecified | 31 | Table: Accepted values by property group | Property group | Values | |---|---:| | crystal structure | 31 | Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/ER/ER-IR.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/ER/ER-IR.json) ## Other properties ### Crystal structure (31) Table: Crystal structure, Er–Ir system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Lattice a | 7.162 Å | 298.15 | Er3Ir; _Er3Ir: Er 0.75, Ir 0.25_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 2; `ORC-KCUMSURRMX.9215d0` | | | Lattice a | 7.16 Å | 298.15 | Er3Ir; _Er3Ir: Er 0.75, Ir 0.25_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 3; `ORC-RFMWO3CGC2.3ff871` | | | Lattice a | 11.047 Å | 298.15 | Er3Ir2; _Er3Ir2: Er 0.6, Ir 0.4_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 12; `ORC-2BQ2OJUGMV.c65585` | | | Lattice a | 11.055 Å | 298.15 | Er3Ir2; _Er3Ir2: Er 0.6, Ir 0.4_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 11; `ORC-3Q73HABAMQ.2f4af3` | | | Lattice a | 15.395 Å | 298.15 | Er5Ir2; _Er5Ir2: Er 0.714, Ir 0.286_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 5; `ORC-B4QIEIXJII.e0a247` | | | Lattice a | 15.405 Å | 298.15 | Er5Ir2; _Er5Ir2: Er 0.714, Ir 0.286_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 4; `ORC-WBUBQ3XXZZ.b0219a` | | | Lattice a | 10.759 Å | 298.15 | Er5Ir3; _Er5Ir3: Er 0.625, Ir 0.375_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 8; `ORC-DEMSPMJCSC.b41c7d` | | | Lattice a | 8.109 Å | 298.15 | Er5Ir3; _Er5Ir3: Er 0.625, Ir 0.375_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 6; `ORC-GWENPOS4PO.40f3c1` | | | Lattice a | 8.112 Å | 298.15 | Er5Ir3; _Er5Ir3: Er 0.625, Ir 0.375_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 7; `ORC-K7E37DBFYU.95e05b` | | | Lattice a | 15.218 Å | 298.15 | Er5Ir3; _Er5Ir3: Er 0.625, Ir 0.375_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 10; `ORC-TQJBBJXXLF` | | | Lattice a | 10.754 Å | 298.15 | Er5Ir3; _Er5Ir3: Er 0.625, Ir 0.375_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 9; `ORC-XE5KQOAIXW.6569ce` | | | Lattice a | 3.367 Å | 298.15 | ErIr; _ErIr: Er 0.5, Ir 0.5_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 13; `ORC-7EIINIBRBC` | | | Lattice a | 7.4923 Å | 298.15 | ErIr2; _ErIr2: Er 0.333, Ir 0.667_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 17; `ORC-V6GHCIVG4T` | | | Lattice a | 7.473 Å | 298.15 | ErIr2; _ErIr2: Er 0.333, Ir 0.667_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 15; `ORC-VTITIFOLWY` | | | Lattice a | 7.488 Å | 298.15 | ErIr2; _ErIr2: Er 0.333, Ir 0.667_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 16; `ORC-WFS7RGWF73` | | | Lattice b | 9.076 Å | 298.15 | Er3Ir; _Er3Ir: Er 0.75, Ir 0.25_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 2; `ORC-KCUMSURRMX.733abf` | | | Lattice b | 9.072 Å | 298.15 | Er3Ir; _Er3Ir: Er 0.75, Ir 0.25_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 3; `ORC-RFMWO3CGC2.83f7db` | | | Lattice b | 6.385 Å | 298.15 | Er5Ir2; _Er5Ir2: Er 0.714, Ir 0.286_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 5; `ORC-B4QIEIXJII.25cb6d` | | | Lattice b | 6.382 Å | 298.15 | Er5Ir2; _Er5Ir2: Er 0.714, Ir 0.286_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 4; `ORC-WBUBQ3XXZZ.541c34` | | | Lattice c | 6.306 Å | 298.15 | Er3Ir; _Er3Ir: Er 0.75, Ir 0.25_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 2; `ORC-KCUMSURRMX.f7073d` | | | Lattice c | 6.302 Å | 298.15 | Er3Ir; _Er3Ir: Er 0.75, Ir 0.25_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 3; `ORC-RFMWO3CGC2.8a9dc8` | | | Lattice c | 24.775 Å | 298.15 | Er3Ir2; _Er3Ir2: Er 0.6, Ir 0.4_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 12; `ORC-2BQ2OJUGMV.3c3df3` | | | Lattice c | 24.82 Å | 298.15 | Er3Ir2; _Er3Ir2: Er 0.6, Ir 0.4_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 11; `ORC-3Q73HABAMQ.b185a5` | | | Lattice c | 7.159 Å | 298.15 | Er5Ir2; _Er5Ir2: Er 0.714, Ir 0.286_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 5; `ORC-B4QIEIXJII.b024e7` | | | Lattice c | 7.165 Å | 298.15 | Er5Ir2; _Er5Ir2: Er 0.714, Ir 0.286_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 4; `ORC-WBUBQ3XXZZ.3ecacc` | | | Lattice c | 6.219 Å | 298.15 | Er5Ir3; _Er5Ir3: Er 0.625, Ir 0.375_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 8; `ORC-DEMSPMJCSC.68bf6d` | | | Lattice c | 6.294 Å | 298.15 | Er5Ir3; _Er5Ir3: Er 0.625, Ir 0.375_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 6; `ORC-GWENPOS4PO.f96f73` | | | Lattice c | 6.295 Å | 298.15 | Er5Ir3; _Er5Ir3: Er 0.625, Ir 0.375_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 7; `ORC-K7E37DBFYU.c923df` | | | Lattice c | 6.218 Å | 298.15 | Er5Ir3; _Er5Ir3: Er 0.625, Ir 0.375_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 9; `ORC-XE5KQOAIXW.f93c18` | | | lattice beta | 96.9 ° | 298.15 | Er5Ir2; _Er5Ir2: Er 0.714, Ir 0.286_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 5; `ORC-B4QIEIXJII.a81f70` | | | lattice beta | 96.89 ° | 298.15 | Er5Ir2; _Er5Ir2: Er 0.714, Ir 0.286_ | unspecified | [1] Anderson 1992 | Table 2, p. 1, row 4; `ORC-WBUBQ3XXZZ.b27578` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. T. J. Anderson, I. Ansara, The Ga-Sn (gallium-tin) system, JPE 13, 181-189 (1992). [doi:10.1007/bf02667485](https://doi.org/10.1007/bf02667485) ## 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/).