Na–Te system

19 accepted literature values from 1 paper(s) (experimental 12, model 7); 1 calculated phase diagram(s). 8 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 (8) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	12
model	7

Accepted values by property group
Property group	Values
invariant reaction	12
phase transition	1
formation	6

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
NaTe-14Che.tdb	Y. Chen, Y. Liu, M. Chu, L. Wang, J. Alloys Compd., 588, 605-10(2014). doi:10.1016/j.jallcom.2013.11.094	`345a0a074cafc669931dd4287c8fab592be447108b75b5510ce532b185f26c9f`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
NaTe-14Che.tdb	694.51	NATE3 (x(Te) 0.75) + LIQUID (x(Te) 0.88769) + HEXAGONAL_A8 (x(Te) 1)
NaTe-14Che.tdb	628.27	NA2TE_C1 (x(Te) 0.33333) + NATE (x(Te) 0.5) + LIQUID (x(Te) 0.51707)
NaTe-14Che.tdb	605.99	NATE (x(Te) 0.5) + LIQUID (x(Te) 0.56548) + NATE3 (x(Te) 0.75)
NaTe-14Che.tdb	370.87	BCC_A2 (x(Te) 0) + LIQUID (x(Te) 0) + NA2TE_C1 (x(Te) 0.33333)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Na–Te system (12)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
676	eutectic: liq -> NaTe3 + Te	NaTe3: Te 0.75; Te: Te 1	experimental	[1] Chen 2014 cites Pellini 1910	Table 3, p. 4, row 12 report
673	eutectic: liq -> NaTe3 + Te	liq: Te 0.87; NaTe3: Te 0.75; Te: Te 1	model	[1] Chen 2014	Table 3, p. 4, row 11 report
628	liq + Na2Te -> NaTe	Na2Te: Te 0.333333; NaTe: Te 0.5	experimental	[1] Chen 2014 cites Kraus 1929 doi	Table 3, p. 4, row 5 report
628	liq + Na2Te -> NaTe	liq: Te 0.53; Na2Te: Te 0.333333; NaTe: Te 0.5	model	[1] Chen 2014	Table 3, p. 4, row 3 report
622	liq + Na2Te -> NaTe	Na2Te: Te 0.333333; NaTe: Te 0.5	experimental	[1] Chen 2014 cites Petric 1989 doi	Table 3, p. 4, row 6 report
621	liq + Na2Te -> NaTe	Na2Te: Te 0.333333; NaTe: Te 0.5	experimental	[1] Chen 2014 cites Pellini 1910	Table 3, p. 4, row 4 report
600	eutectic: liq -> NaTe3 + NaTe	liq: Te 0.58; NaTe3: Te 0.75; NaTe: Te 0.5	model	[1] Chen 2014	Table 3, p. 4, row 7 report
592	eutectic: liq -> NaTe3 + NaTe	NaTe3: Te 0.75; NaTe: Te 0.5	experimental	[1] Chen 2014 cites Kraus 1929 doi	Table 3, p. 4, row 9 report
591	eutectic: liq -> NaTe3 + NaTe	NaTe3: Te 0.75; NaTe: Te 0.5	experimental	[1] Chen 2014 cites Petric 1989 doi	Table 3, p. 4, row 10 report
590	eutectic: liq -> NaTe3 + NaTe	NaTe3: Te 0.75; NaTe: Te 0.5	experimental	[1] Chen 2014 cites Pellini 1910	Table 3, p. 4, row 8 report
370.8	eutectic: liq -> Na + Na2Te	Na: Te 0; Na2Te: Te 0.333333	experimental	[1] Chen 2014 cites Pellini 1910	Table 3, p. 4, row 2 report
370	eutectic: liq -> Na + Na2Te	Na: Te 1.000e-4; Na2Te: Te 0.333333	model	[1] Chen 2014	Table 3, p. 4, row 1 report

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, Na–Te system (6)
Phase	Value	T (K)	Class	Source	Location
Na2Te	-334.7 kJ/mol (basis unstated)	298.15	experimental	[1] Chen 2014 cites Morachevskii 1982	Table 2, p. 4, row 2 report
Na2Te	-330 kJ/mol (basis unstated)		model	[1] Chen 2014	Table 2, p. 4, row 1 report
NaTe	-175 kJ/mol (basis unstated)		model	[1] Chen 2014	Table 2, p. 4, row 3 report
NaTe	-167.5 kJ/mol (basis unstated)	298.15	experimental	[1] Chen 2014 cites Morachevskii 1982	Table 2, p. 4, row 4 report
NaTe3	-180 kJ/mol (basis unstated)		model	[1] Chen 2014	Table 2, p. 4, row 5 report
NaTe3	-167.4 kJ/mol (basis unstated)	298.15	experimental	[1] Chen 2014 cites Morachevskii 1982	Table 2, p. 4, row 6 report

Other properties

Phase transition (1)

Phase transition, Na–Te system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	709 K	709	congruent transformation	experimental	[1] Chen 2014 cites Kraus 1929 doi	p. 1 report	In addition, the congruent melting temperature of NaTe3 was reported to be 709 K with resistometric by Kraus and Glass [8] and thermal analysis by Kraus and Glass [9].

Sources

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

Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for Na–Te and K–Te binary systems, Journal of Alloys and Compounds 588, 605-610 (2014). doi:10.1016/j.jallcom.2013.11.094

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}
}