Hg–Te system

34 accepted literature values from 2 paper(s) (experimental 19, model 10, unspecified 5); 2 calculated phase diagram(s). 3 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 (7) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	19
model	10
unspecified	5

Accepted values by property group
Property group	Values
invariant reaction	6
phase transition	5
phase equilibrium	11
formation	10
mixing / partial	2

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
HgTe-10Gie.tdb	W. Gierlotka, J. Alloys Compd., 494, 102-8(2010). doi:10.1016/j.jallcom.2010.01.003	`c1efc80be4426d7d90ed54d3813099f9aefae229ba3411c64d411a6e9c9ecdca`	viewer · TDB · JSON
HgTe-95Yan-LB.tdb	J. Yang, N.J. Silk, A. Watson, A.W. Bryant, B.B. Argent, Calphad, 19, 399-414(1995). doi:10.1016/0364-5916(95)00038-G	`d35628e6d9da010c601e3659dc676c9d84d2543881647cac6ce6fc7d5612f0bf`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
HgTe-10Gie.tdb	940.55	ZINCBLENDE_B3 (x(Te) 0.5) + LIQUID (x(Te) 0.52155) + ION (x(Te) 0.52677)
HgTe-10Gie.tdb	762.92	ION (x(Te) 0.09121) + LIQUID (x(Te) 0.09145) + ZINCBLENDE_B3 (x(Te) 0.5)
HgTe-10Gie.tdb	682.81	ZINCBLENDE_B3 (x(Te) 0.5) + ION (x(Te) 0.84299) + HEXAGONAL_A8 (x(Te) 1)
HgTe-95Yan-LB.tdb	686.29	ZINCBLENDE_B3 (x(Te) 0.5) + LIQUID (x(Te) 0.85286) + HEXAGONAL_A8 (x(Te) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull HgTe-95Yan-LB

Invariant reactions (literature)

Invariant reactions reported in the literature for the Hg–Te system (6)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
684	HgTe + Te = L	HgTe: Te 0.5; Te: Te 1	experimental	[1] Gierlotka 2010 cites Massalski 1986	Table 3, p. 4, row 9 report
683	HgTe + Te = L	HgTe: Te 0.5; Te: Te 1	model	[1] Gierlotka 2010	Table 3, p. 4, row 11 report
675	HgTe + Te = L	HgTe: Te 0.5; Te: Te 1	model	[1] Gierlotka 2010	Table 3, p. 4, row 12 report
234	Hg + HgTe = L	Hg: Te 0; HgTe: Te 0.5	model	[1] Gierlotka 2010	Table 3, p. 4, row 2 report
233	Hg + HgTe = L	Hg: Te 0; HgTe: Te 0.5	experimental	[1] Gierlotka 2010 cites Massalski 1986	Table 3, p. 4, row 1 report
233	Hg + HgTe = L	Hg: Te 0; HgTe: Te 0.5	model	[1] Gierlotka 2010	Table 3, p. 4, row 4 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, Hg–Te system (10)
Phase	Value	T (K)	Class	Source	Location
HgTe	-44.02 kJ/mol (basis unstated)	298.15	model	[1] Gierlotka 2010 cites Yang 1995 doi	Table 4, p. 4, row 7 report
HgTe	-44.002 kJ/mol (basis unstated)	298.15	unspecified	[2] Jianrong 1995 cites ref. 13	Table 4, p. 13, row 1 report
HgTe	-43.802 kJ/mol (basis unstated)	298.15	unspecified	[1] Gierlotka 2010 cites Su 1981	Table 4, p. 4, row 4 report
HgTe	-43.69 kJ/mol (basis unstated)	298.15	unspecified	[1] Gierlotka 2010 cites Brebrick 1991	Table 4, p. 4, row 6 report
HgTe	-43.648 kJ/mol (basis unstated)	298.15	model	[1] Gierlotka 2010	Table 4, p. 4, row 8 report
HgTe	-43.538 kJ/mol (basis unstated)	298.15	model	[2] Jianrong 1995	Table 4, p. 13, row 2 report
HgTe	-41.2 kJ/mol (basis unstated)	298.15	unspecified	[1] Gierlotka 2010 cites Sha 1989 doi	Table 4, p. 4, row 3 report
HgTe	-36.5 kJ/mol (basis unstated)	298.15	experimental	[1] Gierlotka 2010 cites Nasar 1990 doi	Table 4, p. 4, row 5 report
HgTe	-33.9 kJ/mol (basis unstated)	298.15	experimental	[1] Gierlotka 2010 cites Ratajczak 1969	Table 4, p. 4, row 1 report
HgTe	-31.8 kJ/mol (basis unstated)	298.15	experimental	[1] Gierlotka 2010 cites Mills 1974	Table 4, p. 4, row 2 report

Other properties

Phase transition (5)

Phase transition, Hg–Te system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	942 K	942	L = HgTe L: Te 0.5; HgTe: Te 0.5	model	[1] Gierlotka 2010	Table 3, p. 4, row 8 report
Phase transition	942.65 K	942.65	HgTe	experimental	[2] Jianrong 1995 cites ref. 31	p. 2 report	The melting point of HgTe has been measured by Strauss (3 1) Asadov (34) Delves and Lewis (36) Vanyukov et al. (32), Harman (35) Levitskaya et al. (37) Steininger (38) Blair and New&m (39), Ray and Spencer (26), Szofran and Lehoczky (40), Harman and Strauss (41), Tung et al.. (5)and Gromakov et al. (42) with general agreement and a mean value of 669.5"C.
Phase transition	943 K	943	L = HgTe L: Te 0.5; HgTe: Te 0.5	experimental	[1] Gierlotka 2010 cites Massalski 1986	Table 3, p. 4, row 5 report
Phase transition	943 K	943	congruent transformation	experimental	[1] Gierlotka 2010	p. 2 report	Temperature of congruent melting of HgTe intermetallic compound is 943 K.
Phase transition	944 K	944	L = HgTe L: Te 0.5; HgTe: Te 0.5	model	[1] Gierlotka 2010	Table 3, p. 4, row 6 report

Phase equilibrium (11)

Phase equilibrium, Hg–Te system
Property	T (K)	Phases / composition	Class	Source	Location
Phase composition	936.15	other: Melting Point of HgTe liquid: Te 0.5	experimental	[2] Jianrong 1995 cites ref. 32	Table 1B, p. 4, row 5 report
Phase composition	940.15	other: Melting Point of HgTe liquid: Te 0.5	experimental	[2] Jianrong 1995 cites ref. 5	Table 1B, p. 4, row 6 report
Phase composition	941.15	other: Melting Point of HgTe liquid: Te 0.5	experimental	[2] Jianrong 1995 cites ref. 38	Table 1B, p. 4, row 11 report
Phase composition	941.15	other: Melting Point of HgTe liquid: Te 0.5	experimental	[2] Jianrong 1995 cites ref. 37	Table 1B, p. 4, row 12 report
Phase composition	942.65	other: Melting Point of HgTe liquid: Te 0.5	experimental	[2] Jianrong 1995 cites ref. 39	Table 1B, p. 4, row 7 report
Phase composition	943.15	other: Melting Point of HgTe liquid: Te 0.5	experimental	[2] Jianrong 1995 cites ref. 32	Table 1B, p. 4, row 4 report
Phase composition	943.15	other: Melting Point of HgTe liquid: Te 0.5	experimental	[2] Jianrong 1995 cites ref. 36	Table 1B, p. 4, row 9 report
Phase composition	943.15	other: Melting Point of HgTe liquid: Te 0.5	experimental	[2] Jianrong 1995 cites ref. 26	Table 1B, p. 4, row 8 report
Phase composition	943.15	other: Melting Point of HgTe liquid: Te 0.5	experimental	[2] Jianrong 1995 cites ref. 34	Table 1B, p. 4, row 2 report
Phase composition	943.15	other: Melting Point of HgTe liquid: Te 0.5	experimental	[2] Jianrong 1995 cites ref. 31	Table 1B, p. 4, row 1 report
Phase composition	958.15	other: Melting Point of HgTe liquid: Te 0.5	experimental	[2] Jianrong 1995 cites ref. 42	Table 1B, p. 4, row 10 report

Mixing / partial (2)

Mixing / partial, Hg–Te system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Entropy of mixing printed: S°298(HgTe)	103.83 J/mol (basis unstated)/K	298.15	HgTe alloy: Hg 0.5, Te 0.5	model	[2] Jianrong 1995	Table 4, p. 13, row 2 report
Entropy of mixing printed: S°298(HgTe)	104.6 J/mol (basis unstated)/K	298.15	HgTe alloy: Hg 0.5, Te 0.5	unspecified	[2] Jianrong 1995 cites ref. 13	Table 4, p. 13, row 1 report

Sources

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

Wojciech Gierlotka, Thermodynamic description of the Hg–Te binary system, Journal of Alloys and Compounds 494, 102-108 (2010). doi:10.1016/j.jallcom.2010.01.003
Yang Jianrong, N.J. Silk, A. Watson, A.W. Bryant, B.B. Argent, Thermodynamic and phase diagram assessment of the Cd-Te and Hg-Te systems, Calphad 19, 399-414 (1995). doi:10.1016/0364-5916(95)00038-g

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}
}