# Eu–Te system > Eu–Te system: 12 accepted literature values (invariant reaction 12) and 2 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/EU-TE.html · Markdown: https://data.orchid-project.org/systems/EU-TE.md 12 accepted literature values from 1 paper(s) (experimental 7, model 5); 2 calculated phase diagram(s). 11 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV. Data: [JSON](https://data.orchid-project.org/literature/systems/EU-TE.json) · [CSV](https://data.orchid-project.org/systems/EU-TE.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#EU-TE) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#EU-TE/EuTe-15Gha.json) · [phases (6)](https://data.orchid-project.org/phases/pages/EU-TE.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/EU-TE.html) · [Markdown](https://data.orchid-project.org/systems/EU-TE.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 7 | | model | 5 | Table: Accepted values by property group | Property group | Values | |---|---:| | invariant reaction | 12 | ## 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 | |---|---|---|---| | EuTe-15Gha.tdb | H. Ghamri, Y. Djaballah, A. Belgacem-Bouzida, J. Alloys Compd., 643, 121-28(2015). [doi:10.1016/j.jallcom.2015.03.224](https://doi.org/10.1016/j.jallcom.2015.03.224) | `fe1f8b4811f1b60f93ba53b3031a5080d3010d61c00ce36d4eb85e69181ee045` | [viewer](https://orchid-project.org/phase-diagrams/#EU-TE/EuTe-15Gha.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/EuTe-15Gha.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/EuTe-15Gha.json) | | EuTe-21Don.tdb | C. Dong, J. Wang, B. Hu, L. Zhu, Q. Wu, Y. Du, Calphad, 74, 102281(2021). [doi:10.1016/j.calphad.2021.102281](https://doi.org/10.1016/j.calphad.2021.102281) | `fd5d8bba8db3f01f9fe5e77e11a0ca910c0184f49da9697fb750b8f415afda7a` | [viewer](https://orchid-project.org/phase-diagrams/#EU-TE/EuTe-21Don.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/EuTe-21Don.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/EuTe-21Don.json) | Table: Calculated three-phase invariants (model, mole fraction of the second component) | TDB file | T (K) | Phases at the invariant | |---|---:|---| | EuTe-15Gha.tdb | 1053.19 | BCC_A2 (x(Te) 0) + LIQUID (x(Te) 0.02831) + EUTE_B1 (x(Te) 0.5) | | EuTe-15Gha.tdb | 1053.19 | BCC_A2 (x(Te) 0) + LIQUID (x(Te) 0.02825) + EUTE_B1 (x(Te) 0.5) | | EuTe-15Gha.tdb | 1053.19 | BCC_A2 (x(Te) 0) + LIQUID (x(Te) 0.02819) + EUTE_B1 (x(Te) 0.5) | | EuTe-15Gha.tdb | 792.98 | EUTE_B1 (x(Te) 0.57103) + EU4TE7 (x(Te) 0.63636) + LIQUID (x(Te) 0.92683) | | EuTe-15Gha.tdb | 702.69 | EU4TE7 (x(Te) 0.63636) + EU3TE7 (x(Te) 0.7) + LIQUID (x(Te) 0.95524) | | EuTe-15Gha.tdb | 702.69 | EU4TE7 (x(Te) 0.63636) + EU3TE7 (x(Te) 0.7) + LIQUID (x(Te) 0.95529) | | EuTe-15Gha.tdb | 702.69 | EU4TE7 (x(Te) 0.63636) + EU3TE7 (x(Te) 0.7) + LIQUID (x(Te) 0.95518) | | EuTe-15Gha.tdb | 683.23 | EU3TE7 (x(Te) 0.7) + LIQUID (x(Te) 0.96165) + HEXAGONAL_A8 (x(Te) 1) | | EuTe-15Gha.tdb | 683.23 | EU3TE7 (x(Te) 0.7) + LIQUID (x(Te) 0.96171) + HEXAGONAL_A8 (x(Te) 1) | | EuTe-21Don.tdb | 1053.31 | BCC_A2 (x(Te) 0) + LIQUID (x(Te) 0.03292) + EUTE_B1 (x(Te) 0.5) | | EuTe-21Don.tdb | 1053.31 | BCC_A2 (x(Te) 0) + LIQUID (x(Te) 0.03285) + EUTE_B1 (x(Te) 0.5) | | EuTe-21Don.tdb | 1053.31 | BCC_A2 (x(Te) 0) + LIQUID (x(Te) 0.03283) + EUTE_B1 (x(Te) 0.5) | | EuTe-21Don.tdb | 793.01 | EUTE_B1 (x(Te) 0.57439) + EU4TE7 (x(Te) 0.63636) + LIQUID (x(Te) 0.92355) | | EuTe-21Don.tdb | 703 | EU4TE7 (x(Te) 0.63636) + EU3TE7 (x(Te) 0.7) + LIQUID (x(Te) 0.95205) | | EuTe-21Don.tdb | 703 | EU4TE7 (x(Te) 0.63636) + EU3TE7 (x(Te) 0.7) + LIQUID (x(Te) 0.9521) | | EuTe-21Don.tdb | 703 | EU4TE7 (x(Te) 0.63636) + EU3TE7 (x(Te) 0.7) + LIQUID (x(Te) 0.95198) | | EuTe-21Don.tdb | 683.77 | EU3TE7 (x(Te) 0.7) + LIQUID (x(Te) 0.95877) + HEXAGONAL_A8 (x(Te) 1) | | EuTe-21Don.tdb | 683.77 | EU3TE7 (x(Te) 0.7) + LIQUID (x(Te) 0.95884) + HEXAGONAL_A8 (x(Te) 1) | Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/EU/EU-TE.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/EU/EU-TE.json) · [CALPHAD hull EuTe-15Gha](https://data.orchid-project.org/hulls/calphad-sgte/EU/EU-TE--EuTe-15Gha.json) ## Invariant reactions (literature) Table: Invariant reactions reported in the literature for the Eu–Te system (12) | T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote | |---:|---|---|---|---|---|---| | 1806 | congruent melting: Liq \<-> (EuTe) | Liq: Te 0.5; (EuTe): Te 0.5 | experimental | [1] Ghamri 2015; _cites Sadovskaya 1970_ | Table 3, p. 4, row 5; `ORC-CZCLW5ROZH` | | | 1799.09 | congruent melting: Liq \<-> (EuTe) | Liq: Te 0.5; (EuTe): Te 0.5 | model | [1] Ghamri 2015 | Table 3, p. 4, row 6; `ORC-7MSTEFFLXR` | | | 1799 | congruent melting: Liq \<-> (EuTe) | Liq: Te 0.5; (EuTe): Te 0.5 | experimental | [1] Ghamri 2015; _cites Okamoto 1990_ | Table 3, p. 4, row 4; `ORC-EBXFHAXBRN` | | | 1071 | eutectic: Liq \<-> (Eu) + (EuTe) | (Eu): Te 0; (EuTe): Te 0.5 | experimental | [1] Ghamri 2015; _cites Sadovskaya 1970_ | Table 3, p. 4, row 2; `ORC-LF6KJKKQAO` | | | 1053.19 | eutectic: Liq \<-> (Eu) + (EuTe) | Liq: Te 0.0282; (Eu): Te 0; (EuTe): Te 0.5 | model | [1] Ghamri 2015 | Table 3, p. 4, row 3; `ORC-ER5V3BOXTB` | | | 1053 | eutectic: Liq \<-> (Eu) + (EuTe) | (Eu): Te 0; (EuTe): Te 0.5 | experimental | [1] Ghamri 2015; _cites Okamoto 1990_ | Table 3, p. 4, row 1; `ORC-QFSQMZK4KT` | | | 793.2 | peritectic: Liq + (EuTe) \<-> Eu4Te7 | Liq: Te 0.9268; (EuTe): Te 0.571; Eu4Te7: Te 0.714 | model | [1] Ghamri 2015 | Table 3, p. 4, row 8; `ORC-HIH32OIFKO` | | | 793 | peritectic: Liq + (EuTe) \<-> Eu4Te7 | (EuTe): Te 0.571; Eu4Te7: Te 0.714 | experimental | [1] Ghamri 2015; _cites Sadovskaya 1970_ | Table 3, p. 4, row 7; `ORC-MGOA3HNQOH` | | | 703.09 | peritectic: Liq + Eu4Te7 \<-> Eu3Te7 | Liq: Te 0.9551; Eu4Te7: Te 0.636; Eu3Te7: Te 0.7 | model | [1] Ghamri 2015 | Table 3, p. 4, row 10; `ORC-HIINJLMXNF` | | | 703 | peritectic: Liq + Eu4Te7 \<-> Eu3Te7 | Eu4Te7: Te 0.636; Eu3Te7: Te 0.7 | experimental | [1] Ghamri 2015; _cites Sadovskaya 1970_ | Table 3, p. 4, row 9; `ORC-6HAGDLRAYG` | | | 683.23 | eutectic: Liq \<-> (Te) + Eu3Te7 | Liq: Te 0.9616; (Te): Te 1; Eu3Te7: Te 0.7 | model | [1] Ghamri 2015 | Table 3, p. 4, row 12; `ORC-QAYXZHYVS5` | | | 683 | eutectic: Liq \<-> (Te) + Eu3Te7 | (Te): Te 1; Eu3Te7: Te 0.7 | experimental | [1] Ghamri 2015; _cites Sadovskaya 1970_ | Table 3, p. 4, row 11; `ORC-CLFDKA6OEN` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. H. Ghamri, Y. Djaballah, A. Belgacem-Bouzida, Thermodynamic modeling of the Eu–Te and Te–Yb systems, Journal of Alloys and Compounds 643, 121-128 (2015). [doi:10.1016/j.jallcom.2015.03.224](https://doi.org/10.1016/j.jallcom.2015.03.224) ## 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-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735859 - 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); 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_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_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/).