Si–Te system

5 accepted literature values from 1 paper(s) (experimental 5); 2 calculated phase diagram(s). 19 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (11) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	5

Accepted values by property group
Property group	Values
formation	5

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.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
SiTe-20Yua.tdb	H. Yuan, J. Wang, B. Hu, R. Zhao, Y. Du, S.-Y. Zhang, Calphad, 68, 101743(2020). doi:10.1016/j.calphad.2020.101743	`788eb4e0fb22d784b89158925eeda6927b682a3e46b84f4c0af29c586b90d6b5`	viewer · TDB · JSON
SiTe-99Feu-LB.tdb	Y. Feutelais, A. Schlieper, S.G. Fries, Calphad, 23, 365-78(1999). doi:10.1016/S0364-5916(00)00007-9	`0d62124cd250a55a5554101c3b5f31292094d5a990a1b3e8e227e9fa23feeb44`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
SiTe-20Yua.tdb	956.01	DIAMOND_A4 (x(Te) 0) + SI2TE3_HT (x(Te) 0.6) + LIQUID (x(Te) 0.65859)
SiTe-20Yua.tdb	713.91	DIAMOND_A4 (x(Te) 0) + SI2TE3_LT (x(Te) 0.6) + SI2TE3_HT (x(Te) 0.6)
SiTe-20Yua.tdb	713.91	SI2TE3_HT (x(Te) 0.6) + SI2TE3_LT (x(Te) 0.6) + LIQUID (x(Te) 0.80186)
SiTe-20Yua.tdb	707.55	SI2TE3_LT (x(Te) 0.6) + SITE2_HT (x(Te) 0.66667) + LIQUID (x(Te) 0.80693)
SiTe-20Yua.tdb	673.75	SITE2_HT (x(Te) 0.66667) + LIQUID (x(Te) 0.8465) + HEXAGONAL_A8 (x(Te) 1)
SiTe-20Yua.tdb	663.64	SI2TE3_LT (x(Te) 0.6) + SITE2_C6 (x(Te) 0.66667) + SITE2_HT (x(Te) 0.66667)
SiTe-20Yua.tdb	663.64	SITE2_HT (x(Te) 0.66667) + SITE2_C6 (x(Te) 0.66667) + HEXAGONAL_A8 (x(Te) 1)
SiTe-99Feu-LB.tdb	1165.1	DIAMOND_A4 (x(Te) 0) + SI2TE3_HT (x(Te) 0.6) + LIQUID (x(Te) 0.6039)
SiTe-99Feu-LB.tdb	680.17	SI2TE3_HT (x(Te) 0.6) + LIQUID (x(Te) 0.86539) + HEXAGONAL_A8 (x(Te) 1)
SiTe-99Feu-LB.tdb	674	DIAMOND_A4 (x(Te) 0) + SI2TE3_LT (x(Te) 0.6) + SI2TE3_HT (x(Te) 0.6)
SiTe-99Feu-LB.tdb	674	SI2TE3_HT (x(Te) 0.6) + SI2TE3_LT (x(Te) 0.6) + HEXAGONAL_A8 (x(Te) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull SiTe-99Feu-LB

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.

Enthalpies of formation, Si–Te system (5)
Phase	Value	T (K)	Class	Source	Location
α-Si2Te3	-18.4 kJ/mol-atom ± 2.6	298.15	experimental	[1] Feutelais 1999 cites EXSTEEN 1967	Table 2, p. 9, row 3 report
α-Si2Te3	-17.8 kJ/mol-atom ± 3.8	298.15	experimental	[1] Feutelais 1999 cites EXSTEEN 1967	Table 2, p. 9, row 4 report
α-Si2Te3	-14.4 kJ/mol-atom ± 1	298.15	experimental	[1] Feutelais 1999 cites ref. 13	Table 2, p. 9, row 6 report
α-Si2Te3	-14.2 kJ/mol-atom ± 1.2	298.15	experimental	[1] Feutelais 1999 cites OHARE 1993	Table 2, p. 9, row 7 report
α-Si2Te3	-13.8 kJ/mol-atom ± 1.4	298.15	experimental	[1] Feutelais 1999 cites ref. 13	Table 2, p. 9, row 5 report

Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

Y. Feutelais, A. Schlieper, S.G. Fries, Thermodynamic evaluation of the system silicon — Tellurium, Calphad 23, 365-378 (1999). doi:10.1016/s0364-5916(00)00007-9

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). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi: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). doi: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). doi: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.

@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}
}