Al–Te system

33 accepted literature values from 1 paper(s) (experimental 21, model 12); 2 calculated phase diagram(s). 4 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	21
model	12

Accepted values by property group
Property group	Values
invariant reaction	14
phase transition	2
formation	9
crystal structure	8

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
AlTe-19Shi.tdb	C. Shi, B. Yang, B. Hu, Y. Du, S. Yao, J. Phase Equilib. Diffus., 40, 392-402(2019). doi:10.1007/s11669-019-00733-z	`c52e1bafcdb91f7ec8a2370963c6c33d0805635e1468eec90c7c82fb8d04cc23`	viewer · TDB · JSON
AlTe-93Oh.tdb	C.-S. Oh, D.N. Lee, Calphad, 17, 175-87(1993). doi:10.1016/0364-5916(93)90018-7	`a95e02f39b2e3292640c5dc8f4c36f5b04168573010b4f2c7d3a72a0f282f504`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AlTe-19Shi.tdb	1128.7	LIQUID#2 (x(Te) 0.1576) + ALTE (x(Te) 0.5) + LIQUID (x(Te) 0.5302)
AlTe-19Shi.tdb	1120.36	ALTE (x(Te) 0.5) + LIQUID (x(Te) 0.5653) + AL2TE3_BETA (x(Te) 0.6)
AlTe-19Shi.tdb	993.15	ALTE (x(Te) 0.5) + AL2TE3_ALPHA (x(Te) 0.6) + AL2TE3_BETA (x(Te) 0.6)
AlTe-19Shi.tdb	993.15	AL2TE3_ALPHA (x(Te) 0.6) + AL2TE3_BETA (x(Te) 0.6) + LIQUID (x(Te) 0.70581)
AlTe-19Shi.tdb	933.46	FCC_A1 (x(Te) 0) + LIQUID (x(Te) 7.000e-5) + ALTE (x(Te) 0.5)
AlTe-19Shi.tdb	735.99	AL2TE3_ALPHA (x(Te) 0.6) + AL2TE5 (x(Te) 0.71429) + LIQUID (x(Te) 0.88417)
AlTe-19Shi.tdb	699.65	AL2TE5 (x(Te) 0.71429) + LIQUID (x(Te) 0.91983) + HEXAGONAL_A8 (x(Te) 1)
AlTe-19Shi.tdb	682.23	AL2TE3_ALPHA (x(Te) 0.6) + AL2TE5 (x(Te) 0.71429) + HEXAGONAL_A8 (x(Te) 1)
AlTe-93Oh.tdb	1115.46	ION#2 (x(Te) 0.11887) + ION (x(Te) 0.52275) + AL2TE3 (x(Te) 0.6)
AlTe-93Oh.tdb	919.08	FCC_A1 (x(Te) 0) + ION (x(Te) 0.02432) + AL2TE3 (x(Te) 0.6)
AlTe-93Oh.tdb	720.62	ION (x(Te) 0.73027) + ION#2 (x(Te) 0.99402) + HEXAGONAL_A8 (x(Te) 1)
AlTe-93Oh.tdb	567.29	AL2TE3 (x(Te) 0.6) + ION (x(Te) 0.68554) + HEXAGONAL_A8 (x(Te) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull AlTe-93Oh

Invariant reactions (literature)

Invariant reactions reported in the literature for the Al–Te system (14)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1268.75	critical point: L -> L1 + L2	L: Te 0.405	model	[1] Shi 2019	Table 7, p. 10, row 2 report
1230.15	critical point: L -> L1 + L2	L: Te 0.41	experimental	[1] Shi 2019 cites Said 2019	Table 7, p. 10, row 1 report
1130.15	syntectic: L1 + L2 -> AlTe	L1: Te 0.101; L2: Te 0.558; AlTe: Te 0.5	experimental	[1] Shi 2019 cites Kniep 1988 doi	Table 7, p. 10, row 5 report
1128.65	syntectic: L1 + L2 -> AlTe	L1: Te 0.157; L2: Te 0.522; AlTe: Te 0.5	model	[1] Shi 2019	Table 7, p. 10, row 6 report
1120.35	eutectic: L2 -> AlTe + βAl2Te3	L2: Te 0.565; AlTe: Te 0.5; βAl2Te3: Te 0.6	model	[1] Shi 2019	Table 7, p. 10, row 8 report
1119.45	eutectic: L2 -> AlTe + βAl2Te3	L2: Te 0.568; AlTe: Te 0.5; βAl2Te3: Te 0.6	experimental	[1] Shi 2019 cites Kniep 1988 doi	Table 7, p. 10, row 7 report
933.25	eutectic: L1 -> (Al) + AlTe	L1: Te 1.000e-4; (Al): Te 0; AlTe: Te 0.5	model	[1] Shi 2019	Table 7, p. 10, row 4 report
922.15	eutectic: L1 -> (Al) + AlTe	L1: Te 1.000e-4; (Al): Te 0; AlTe: Te 0.5	experimental	[1] Shi 2019 cites Kniep 1988 doi	Table 7, p. 10, row 3 report
738.15	peritectic: αAl2Te3 + L2 -> Al2Te5	αAl2Te3: Te 0.6; L2: Te 0.875; Al2Te5: Te 0.714	experimental	[1] Shi 2019 cites Kniep 1988 doi	Table 7, p. 10, row 11 report
735.85	peritectic: αAl2Te3 + L2 -> Al2Te5	αAl2Te3: Te 0.6; L2: Te 0.884; Al2Te5: Te 0.714	model	[1] Shi 2019	Table 7, p. 10, row 12 report
708.15	eutectic: L2 -> Al2Te5 + (Te)	L2: Te 0.882; Al2Te5: Te 0.714; (Te): Te 1	experimental	[1] Shi 2019 cites Kniep 1988 doi	Table 7, p. 10, row 9 report
699.45	eutectic: L2 -> Al2Te5 + (Te)	L2: Te 0.919; Al2Te5: Te 0.714; (Te): Te 1	model	[1] Shi 2019	Table 7, p. 10, row 10 report
688.15	eutectoid: Al2Te5 -> αAl2Te3 + (Te)	Al2Te5: Te 0.714; αAl2Te3: Te 0.6; (Te): Te 1	experimental	[1] Shi 2019 cites Kniep 1988 doi	Table 7, p. 10, row 13 report
681.55	eutectoid: Al2Te5 -> αAl2Te3 + (Te)	Al2Te5: Te 0.714; αAl2Te3: Te 0.6; (Te): Te 1	model	[1] Shi 2019	Table 7, p. 10, row 14 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, Al–Te system (9)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location	Quote
Al2Te3	Al2Te3	-85.9 kJ/mol-atom	298.15	model	-67.973 (mp-aaaabrqs)	-43.474 (oqmd-648344)	[1] Shi 2019	p. 9 report	However, the enthalpy of formation of bAl2Te3 at 25 C obtained in this work (-85.9 kJ/mol-atoms) is less negative than experimental results (-63.8 kJ/mol-atoms[46] and [47] -52.0 kJ/mol-atoms ).
Al2Te3	Al2Te3	-63.8 kJ/mol-atom	298.15	experimental	-67.973 (mp-aaaabrqs)	-43.474 (oqmd-648344)	[1] Shi 2019 cites Joel 1967	p. 9 report	However, the enthalpy of formation of bAl2Te3 at 25 C obtained in this work (-85.9 kJ/mol-atoms) is less negative than experimental results (-63.8 kJ/mol-atoms[46] and [47] -52.0 kJ/mol-atoms ).
Al2Te3	Al2Te3	-52 kJ/mol-atom	298.15	experimental	-67.973 (mp-aaaabrqs)	-43.474 (oqmd-648344)	[1] Shi 2019 cites Balducci 1997	p. 9 report	However, the enthalpy of formation of bAl2Te3 at 25 C obtained in this work (-85.9 kJ/mol-atoms) is less negative than experimental results (-63.8 kJ/mol-atoms[46] and [47] -52.0 kJ/mol-atoms ).
Al2Te5	Al2Te5	-59.1 kJ/mol-atom	298.15	model	-60.423 (mp-aaaaanry)	-31.742 (oqmd-1795930)	[1] Shi 2019	Table 3, p. 3, row 20 report
AlTe	AlTe	-87.6 kJ/mol-atom	298.15	model		-37.082 (oqmd-1374663)	[1] Shi 2019	Table 3, p. 3, row 19 report
βAl2Te3	Al2Te3	-85.9 kJ/mol-atom	298.15	model	-67.973 (mp-aaaabrqs)	-43.474 (oqmd-648344)	[1] Shi 2019	Table 3, p. 3, row 18 report
βAl2Te3	Al2Te3	-63.8 kJ/mol-atom	298.15	experimental	-67.973 (mp-aaaabrqs)	-43.474 (oqmd-648344)	[1] Shi 2019 cites Joel 1967	Table 3, p. 3, row 15 report
βAl2Te3	Al2Te3	-63.6 kJ/mol-atom	298.15	experimental	-67.973 (mp-aaaabrqs)	-43.474 (oqmd-648344)	[1] Shi 2019 cites Mills 1974	Table 3, p. 3, row 17 report
βAl2Te3	Al2Te3	-52 kJ/mol-atom	298.15	experimental	-67.973 (mp-aaaabrqs)	-43.474 (oqmd-648344)	[1] Shi 2019 cites Balducci 1997	Table 3, p. 3, row 16 report

Other properties

Phase transition (2)

Phase transition, Al–Te system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	1138.55 K	1138.55	Al2Te3	model	[1] Shi 2019	p. 9 report	The calculated melting temperature of Al2Te3 is 865.4 C, slightly lower than the experimental value (903.0 C).[35]
Phase transition	1176.15 K	1176.15	Al2Te3	experimental	[1] Shi 2019 cites Said 2019	p. 9 report	The calculated melting temperature of Al2Te3 is 865.4 C, slightly lower than the experimental value (903.0 C).[35]

Crystal structure (8)

Crystal structure, Al–Te system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	1.3593 Å	298.15	Al2Te5 alloy: Te 0.714286	experimental	[1] Shi 2019 cites Deiseroth 1996 doi	Table 2, p. 3, row 12 report
Lattice a	0.408 Å	298.15	αAl2Te3 alloy: Te 0.6	experimental	[1] Shi 2019 cites Mirgalovskaya 1959	Table 2, p. 3, row 10 report
Lattice a	0.7181 Å	298.15	βAl2Te3 alloy: Te 0.6	experimental	[1] Shi 2019 cites Conrad 1997 doi	Table 2, p. 3, row 11 report
Lattice b	0.4153 Å	298.15	Al2Te5 alloy: Te 0.714286	experimental	[1] Shi 2019 cites Deiseroth 1996 doi	Table 2, p. 3, row 12 report
Lattice b	1.2848 Å	298.15	βAl2Te3 alloy: Te 0.6	experimental	[1] Shi 2019 cites Conrad 1997 doi	Table 2, p. 3, row 11 report
Lattice c	0.9839 Å	298.15	Al2Te5 alloy: Te 0.714286	experimental	[1] Shi 2019 cites Deiseroth 1996 doi	Table 2, p. 3, row 12 report
Lattice c	0.697 Å	298.15	αAl2Te3 alloy: Te 0.6	experimental	[1] Shi 2019 cites Mirgalovskaya 1959	Table 2, p. 3, row 10 report
Lattice c	1.4167 Å	298.15	βAl2Te3 alloy: Te 0.6	experimental	[1] Shi 2019 cites Conrad 1997 doi	Table 2, p. 3, row 11 report

Sources

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

Chenying Shi, Biaobiao Yang, Biao Hu, Yong Du, Sheng Yao, Thermodynamic Description of the Al–X (X = S, Se, Te) Systems, J. Phase Equilib. Diffus. 40, 392-402 (2019). doi:10.1007/s11669-019-00733-z

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}
}