# Fe–As system > Fe–As system: 0 accepted literature values (none) and 2 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/FE-AS.html · Markdown: https://data.orchid-project.org/systems/FE-AS.md 0 accepted literature values from 0 paper(s); 2 calculated phase diagram(s). Data: [interactive phase diagram](https://orchid-project.org/phase-diagrams/#FE-AS/FeAs-08Ohn.json) · [Markdown](https://data.orchid-project.org/systems/FE-AS.md) ## Calculated phase diagrams Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model. Table: Assessments with a calculated phase diagram | TDB file | Assessment | SHA-256 | Links | |---|---|---|---| | FeAs-08Ohn.tdb | M. Ohno, K. Yoh, J. Cryst. Growth, 310, 2751-59(2008). [doi:10.1016/j.jcrysgro.2008.02.017](https://doi.org/10.1016/j.jcrysgro.2008.02.017) | `ed9f68c0b96e5b3480714a38ce58c02a7052120fe6198777844e02a56f5079eb` | [viewer](https://orchid-project.org/phase-diagrams/#FE-AS/FeAs-08Ohn.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeAs-08Ohn.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeAs-08Ohn.json) | | FeAs-94Pei-LB.tdb | B. Pei, B. Bjoerkman, B. Jansson, B. Sundman, Z. Metallkd., 85, 171-77(1994). [doi:10.1515/ijmr-1994-850304](https://doi.org/10.1515/ijmr-1994-850304) | `24c905685b77bd98751ad0c1891869d81adfe67b3057b6d534e99e4ef7a6ba2c` | [viewer](https://orchid-project.org/phase-diagrams/#FE-AS/FeAs-94Pei-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/FeAs-94Pei-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/FeAs-94Pei-LB.json) | Table: Calculated three-phase invariants (model, mole fraction of the second component) | TDB file | T (K) | Phases at the invariant | |---|---:|---| | FeAs-08Ohn.tdb | 1265.6 | FEAS_B31 (x(As) 0.5) + LIQUID (x(As) 0.55526) + FEAS2_C18 (x(As) 0.66667) | | FeAs-08Ohn.tdb | 1265.6 | FEAS_B31 (x(As) 0.5) + LIQUID (x(As) 0.55495) + FEAS2_C18 (x(As) 0.66667) | | FeAs-08Ohn.tdb | 1265.6 | FEAS_B31 (x(As) 0.5) + LIQUID (x(As) 0.5554) + FEAS2_C18 (x(As) 0.66667) | | FeAs-08Ohn.tdb | 1226.4 | LIQUID (x(As) 0.41026) + FE3AS2 (x(As) 0.42149) + FEAS_B31 (x(As) 0.5) | | FeAs-08Ohn.tdb | 1177.14 | FE2AS_C38 (x(As) 0.33333) + LIQUID (x(As) 0.35258) + FE3AS2 (x(As) 0.40941) | | FeAs-08Ohn.tdb | 1177.14 | FE2AS_C38 (x(As) 0.33333) + LIQUID (x(As) 0.35241) + FE3AS2 (x(As) 0.40935) | | FeAs-08Ohn.tdb | 1120.65 | BCC_A2 (x(As) 0.09849) + LIQUID (x(As) 0.24932) + FE2AS_C38 (x(As) 0.33333) | | FeAs-08Ohn.tdb | 1120.65 | BCC_A2 (x(As) 0.09844) + LIQUID (x(As) 0.24928) + FE2AS_C38 (x(As) 0.33333) | | FeAs-08Ohn.tdb | 1101.84 | FE2AS_C38 (x(As) 0.33333) + FE3AS2 (x(As) 0.41796) + FEAS_B31 (x(As) 0.5) | | FeAs-08Ohn.tdb | 1075.45 | FEAS2_C18 (x(As) 0.66667) + LIQUID (x(As) 0.97293) + RHOMBOHEDRAL_A7 (x(As) 1) | | FeAs-08Ohn.tdb | 1075.45 | FEAS2_C18 (x(As) 0.66667) + LIQUID (x(As) 0.97294) + RHOMBOHEDRAL_A7 (x(As) 1) | | FeAs-94Pei-LB.tdb | 1271.37 | FEAS_B31 (x(As) 0.5) + ION (x(As) 0.58776) + FEAS2_C18 (x(As) 0.66667) | | FeAs-94Pei-LB.tdb | 1249.91 | ION (x(As) 0.40805) + FE3AS2 (x(As) 0.41849) + FEAS_B31 (x(As) 0.5) | | FeAs-94Pei-LB.tdb | 1196.67 | FE2AS_C38 (x(As) 0.33333) + ION (x(As) 0.35362) + FE3AS2 (x(As) 0.39877) | | FeAs-94Pei-LB.tdb | 1118.55 | BCC_A2 (x(As) 0.09629) + ION (x(As) 0.25074) + FE2AS_C38 (x(As) 0.33333) | | FeAs-94Pei-LB.tdb | 1096.12 | FE2AS_C38 (x(As) 0.33333) + FE3AS2 (x(As) 0.39708) + FEAS_B31 (x(As) 0.5) | | FeAs-94Pei-LB.tdb | 1077.52 | FEAS2_C18 (x(As) 0.66667) + ION (x(As) 0.9587) + RHOMBOHEDRAL_A7 (x(As) 1) | ## Please cite - R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735859 - 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 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; 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). 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_phase_diagrams_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID-Diagrams: calculated binary phase diagrams}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23735859}, url = {https://doi.org/10.5281/zenodo.23735859} } @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/).