Ho–Te system

36 accepted literature values from 2 paper(s) (experimental 18, model 9, DFT 6, unspecified 3); 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 · CSV · interactive explorer · interactive phase diagram · phases (8) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	18
model	9
DFT	6
unspecified	3

Accepted values by property group
Property group	Values
invariant reaction	11
phase transition	1
formation	6
crystal structure	18

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
HoTe-13Gha.tdb	H. Ghamri, A. Belgacem-Bouzida, Y. Djaballah, A. Hidoussi, J. Alloys Compd., 552, 387-91(2013). doi:10.1016/j.jallcom.2012.11.084	`5d8553f717e4b7cd6d37a20d75ac2f8b716e9e1ec98160f7f8c382b578fe289d`	viewer · TDB · JSON
HoTe-23Cui.tdb	D. Cui, J. Wang, J. Zhou, J. Phase Equilib. Diffus., 44, 456-67(2023). doi:10.1007/s11669-023-01051-1	`49a17617ab6fb11c19f32d9118dc7e7169e2e64c143b9f4472a89892b5932ddf`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
HoTe-13Gha.tdb	1383.12	HCP_A3 (x(Te) 0) + LIQUID (x(Te) 0.22611) + HOTE_B1 (x(Te) 0.5)
HoTe-13Gha.tdb	1383.12	HCP_A3 (x(Te) 0) + LIQUID (x(Te) 0.2261) + HOTE_B1 (x(Te) 0.5)
HoTe-13Gha.tdb	1383.12	HCP_A3 (x(Te) 0) + LIQUID (x(Te) 0.226) + HOTE_B1 (x(Te) 0.5)
HoTe-13Gha.tdb	1076.11	HOTE_B1 (x(Te) 0.54701) + HO2TE5 (x(Te) 0.71429) + LIQUID (x(Te) 0.93022)
HoTe-13Gha.tdb	1045.66	HO2TE5 (x(Te) 0.71429) + HOTE3 (x(Te) 0.75) + LIQUID (x(Te) 0.94509)
HoTe-13Gha.tdb	1045.66	HO2TE5 (x(Te) 0.71429) + HOTE3 (x(Te) 0.75) + LIQUID (x(Te) 0.94516)
HoTe-13Gha.tdb	1045.66	HO2TE5 (x(Te) 0.71429) + HOTE3 (x(Te) 0.75) + LIQUID (x(Te) 0.94506)
HoTe-13Gha.tdb	722.66	HOTE3 (x(Te) 0.75) + HEXAGONAL_A8 (x(Te) 1) + LIQUID (x(Te) 1)
HoTe-13Gha.tdb	722.66	HOTE3 (x(Te) 0.75) + HEXAGONAL_A8 (x(Te) 1) + LIQUID (x(Te) 1)
HoTe-23Cui.tdb	1387.24	HCP_A3 (x(Te) 0) + LIQUID (x(Te) 0.20391) + HOTE_B1 (x(Te) 0.50015)
HoTe-23Cui.tdb	1073.19	HOTE_B1 (x(Te) 0.53608) + HO2TE5 (x(Te) 0.71429) + LIQUID (x(Te) 0.91828)
HoTe-23Cui.tdb	1052.29	HO2TE5 (x(Te) 0.71429) + HOTE3 (x(Te) 0.75) + LIQUID (x(Te) 0.93402)
HoTe-23Cui.tdb	722.64	HOTE3 (x(Te) 0.75) + LIQUID (x(Te) 0.99994) + HEXAGONAL_A8 (x(Te) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull HoTe-13Gha

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ho–Te system (11)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1643	congruent melting: Liq <-> (HoTe)	Liq: Te 0.5; (HoTe): Te 0.5	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 4, p. 4, row 4 report
1642	congruent melting: Liq <-> (HoTe)	Liq: Te 0.5; (HoTe): Te 0.5	model	[1] Ghamri 2013	Table 4, p. 4, row 5 report
1383.12	eutectic: Liq <-> (Ho) + (HoTe)	Liq: Te 0.2261; (Ho): Te 0; (HoTe): Te 0.5	model	[1] Ghamri 2013	Table 4, p. 4, row 3 report
1383	eutectic: Liq <-> (Ho) + (HoTe)	Liq: Te 0.23; (HoTe): Te 0.485	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 4, p. 4, row 1 report
1383	eutectic: Liq <-> (Ho) + (HoTe)	Liq: Te 0.23; (HoTe): Te 0.5	experimental	[1] Ghamri 2013 cites Massalski 1990	Table 4, p. 4, row 2 report
1073.1	peritectic: Liq + (HoTe) <-> Ho2Te5	Liq: Te 0.9313; (HoTe): Te 0.547; Ho2Te5: Te 0.714	model	[1] Ghamri 2013	Table 4, p. 4, row 7 report
1073	peritectic: Liq + (HoTe) <-> Ho2Te5	(HoTe): Te 0.547; Ho2Te5: Te 0.714	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 4, p. 4, row 6 report
1053.2	peritectic: Liq + Ho2Te5 <-> HoTe3	Liq: Te 0.9412; Ho2Te5: Te 0.714; HoTe3: Te 0.75	model	[1] Ghamri 2013	Table 4, p. 4, row 9 report
1053	peritectic: Liq + Ho2Te5 <-> HoTe3	Ho2Te5: Te 0.714; HoTe3: Te 0.75	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 4, p. 4, row 8 report
728	peritectic: Liq <-> (Te) + HoTe3	HoTe3: Te 0.75	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 4, p. 4, row 10 report
722.66	eutectic: Liq <-> (Te) + HoTe3	Liq: Te 0.999; (Te): Te 1; HoTe3: Te 0.75	model	[1] Ghamri 2013	Table 4, p. 4, row 11 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, Ho–Te system (6)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
Ho2Te5		-107.62 kJ/mol-atom	298.15	DFT			[1] Ghamri 2013	Table 2, p. 3, row 4 report
Ho2Te5	Ho2Te5	-103.917 kJ/mol-atom	298.15	model	-122.227 (mp-aaackwra)	-96.625 (oqmd-1798994)	[1] Ghamri 2013	Table 2, p. 3, row 5 report
HoTe	HoTe	-162 kJ/mol-atom	298.15	model	-140.092 (mp-aaaaabjj)	-120.012 (oqmd-8123)	[1] Ghamri 2013 cites Eichler 1990 doi	Table 2, p. 3, row 1 report
HoTe		-153.449 kJ/mol-atom	298.15	DFT			[1] Ghamri 2013	Table 2, p. 3, row 2 report
HoTe	HoTe	-152.99 kJ/mol-atom	298.15	model	-140.092 (mp-aaaaabjj)	-120.012 (oqmd-8123)	[1] Ghamri 2013	Table 2, p. 3, row 3 report
HoTe3	HoTe3	-94 kJ/mol-atom	298.15	model	-118.228 (mp-aaacjjlc)	-86.803 (oqmd-1745454)	[1] Ghamri 2013	Table 2, p. 3, row 6 report

Other properties

Phase transition (1)

Phase transition, Ho–Te system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	1643 K	1643	congruent transformation	experimental	[2] Cui 2023 cites Yarembash 1974	p. 3 report	HoTe has a homogeneity range and melts congruently at about 1643 K.

Crystal structure (18)

Crystal structure, Ho–Te system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	6.055 Å	0	(HoTe) alloy: Ho 0.5, Te 0.5	DFT	[1] Ghamri 2013	Table 1, p. 2, row 4 report
Lattice a	4.108 Å	0	Ho2Te5 Ho2Te5: Ho 0.286, Te 0.714	DFT	[1] Ghamri 2013	Table 1, p. 2, row 6 report
Lattice a	6.09 Å	298.15	(HoTe) alloy: Ho 0.5, Te 0.5	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 1, p. 2, row 3 report
Lattice a	4.411 Å	298.15	Ho2Te5 Ho2Te5: Ho 0.286, Te 0.714	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 1, p. 2, row 5 report
Lattice a	4.41 Å	298.15	Ho2Te5 alloy: Ho 0.285714, Te 0.714286	experimental	[2] Cui 2023 cites Yarembash 1974	Table 1, p. 2, row 20 report
Lattice a	6.07 Å	298.15	HoTe alloy: Ho 0.5, Te 0.5	experimental	[2] Cui 2023 cites Brixner 1960 doi	Table 1, p. 2, row 19 report
Lattice a	4.29 Å	298.15	HoTe3 alloy: Ho 0.25, Te 0.75	unspecified	[2] Cui 2023 cites Slovyanskikh 1985	Table 1, p. 2, row 21 report
Lattice a	4.273 Å	298.15	HoTe3 HoTe3: Ho 0.25, Te 0.75	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 1, p. 2, row 7 report
Lattice b	43.964 Å	0	Ho2Te5 Ho2Te5: Ho 0.286, Te 0.714	DFT	[1] Ghamri 2013	Table 1, p. 2, row 6 report
Lattice b	45.03 Å	298.15	Ho2Te5 Ho2Te5: Ho 0.286, Te 0.714	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 1, p. 2, row 5 report
Lattice b	45.03 Å	298.15	Ho2Te5 alloy: Ho 0.285714, Te 0.714286	experimental	[2] Cui 2023 cites Yarembash 1974	Table 1, p. 2, row 20 report
Lattice b	25.4 Å	298.15	HoTe3 alloy: Ho 0.25, Te 0.75	unspecified	[2] Cui 2023 cites Slovyanskikh 1985	Table 1, p. 2, row 21 report
Lattice b	24.87 Å	298.15	HoTe3 HoTe3: Ho 0.25, Te 0.75	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 1, p. 2, row 7 report
Lattice c	4.621 Å	0	Ho2Te5 Ho2Te5: Ho 0.286, Te 0.714	DFT	[1] Ghamri 2013	Table 1, p. 2, row 6 report
Lattice c	4.411 Å	298.15	Ho2Te5 Ho2Te5: Ho 0.286, Te 0.714	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 1, p. 2, row 5 report
Lattice c	4.41 Å	298.15	Ho2Te5 alloy: Ho 0.285714, Te 0.714286	experimental	[2] Cui 2023 cites Yarembash 1974	Table 1, p. 2, row 20 report
Lattice c	4.29 Å	298.15	HoTe3 alloy: Ho 0.25, Te 0.75	unspecified	[2] Cui 2023 cites Slovyanskikh 1985	Table 1, p. 2, row 21 report
Lattice c	4.273 Å	298.15	HoTe3 HoTe3: Ho 0.25, Te 0.75	experimental	[1] Ghamri 2013 cites Yarembash 1974	Table 1, p. 2, row 7 report

Sources

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

H. Ghamri, A. Belgacem-Bouzida, Y. Djaballah, A. Hidoussi, Thermodynamic assessment of the Ho–Te system supported by ab initio calculations, Journal of Alloys and Compounds 552, 387-391 (2013). doi:10.1016/j.jallcom.2012.11.084
Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023). doi:10.1007/s11669-023-01051-1

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}
}