Si–Ta–V system

36 accepted literature values from 1 paper(s) (experimental 33, model 2, unspecified 1); 0 calculated phase diagram(s).

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Accepted values by evidence class
Evidence class	Values
experimental	33
model	2
unspecified	1

Accepted values by property group
Property group	Values
formation	2
crystal structure	34

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–Ta–V system (2)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location	Quote
Si3Si		52 kJ/mol-atom	0	model			[1] Broz 2013 cites Zhang 2008 doi	Table 2, p. 6, row 18 report
Si3Si		56.7 kJ/mol-atom	0	unspecified			[1] Broz 2013	Table 2, p. 6, row 17 report

Other properties

Crystal structure (34)

Crystal structure, Si–Ta–V system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	5.4306 Å	298.15	(Si) alloy: Ta 0, V 0	model	[1] Broz 2013 cites Smith 1983 doi	Table 1, p. 3, row 5 report
Lattice a	0.61623 not_printed ± 8.000e-5	298.15	(Ta1−xVx)2Si	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 12 report
Lattice a	0.61454 not_printed ± 7.000e-5	298.15	(Ta1−xVx)2Si	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 11 report
Lattice a	1.00903 not_printed ± 9.000e-5	298.15	(Ta1−xVx)3Si	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 8 report
Lattice a	0.6443 not_printed ± 7.000e-5	298.15	(Ta1−xVx)5Si3	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 15 report
Lattice a	0.94674 not_printed ± 7.000e-5	298.15	(Ta1−xVx)5Si3	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 22 report
Lattice a	0.65154 not_printed ± 5.000e-5	298.15	(Ta1−xVx)5Si3	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 16 report
Lattice a	4.763 Å	298.15	(TaxV1−x)3Si	experimental	[1] Broz 2013 cites Alekseyevskiy 1977	Table 1, p. 3, row 41 report
Lattice a	0.4755 not_printed ± 4.000e-4	298.15	(TaxV1−x)3Si	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 40 report
Lattice a	0.7625 not_printed ± 5.000e-4	298.15	(TaxV1−x)6Si5	experimental	[1] Broz 2013 cites Steinmetz 1977 doi	Table 1, p. 3, row 46 report
Lattice a	0.7643 not_printed ± 7.000e-4	298.15	(TaxV1−x)6Si5	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 47 report
Lattice a	0.7258 not_printed ± 6.000e-4	298.15	τ1-(TaxV1−x)5Si3	experimental	[1] Broz 2013 cites Mittal 1978 doi	Table 1, p. 3, row 23 report
Lattice a	5.05 Å	298.15	τ2-Ta(TaVSi)2 alloy: Si 0.285714, Ta 0.428571, V 0.285714	experimental	[1] Broz 2013 cites Mittal 1978 doi	Table 1, p. 3, row 28 report
Lattice a	3.315 Å (range 3.305 to 3.325)	300	(Ta1−xVx)	experimental	[1] Broz 2013 cites Rudy 1969	Table 1, p. 3, row 49 report
Lattice a	4.67 Å (range 4.574 to 4.766)	300	(Ta1−xVx)Si2	experimental	[1] Broz 2013 cites Nowotny 1957 doi	Table 1, p. 3, row 52 report
Lattice a	3.0266 Å (range 3.0232 to 3.03)	300	(V1−xSix)	experimental	[1] Broz 2013 cites Bruning 1967	Table 1, p. 3, row 50 report
Lattice a	7.2945 Å (range 7.1976 to 7.3914)	300	τ1-(TaxV1−x)5Si3 alloy: Ta 0.2, V 0.2	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 51 report
Lattice a	5 Å ± 0.03	300	τ2-Ta(TaVSi)2 alloy: Si 0.285714, Ta 0.428571, V 0.285714	experimental	[1] Broz 2013 cites Ganglberger 1965 doi	Table 1, p. 3, row 27 report
Lattice a	0.7151 not_printed ± 1.000e-5	1773.15	τ3-Ta(TaxV1−x−ySiy)2	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 31 report
Lattice b	1.609 not_printed ± 0.001	298.15	(TaxV1−x)6Si5	experimental	[1] Broz 2013 cites Steinmetz 1977 doi	Table 1, p. 3, row 46 report
Lattice b	1.6078 not_printed ± 5.000e-4	298.15	(TaxV1−x)6Si5	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 47 report
Lattice c	0.50574 not_printed ± 7.000e-5	298.15	(Ta1−xVx)2Si	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 12 report
Lattice c	0.50431 not_printed ± 7.000e-5	298.15	(Ta1−xVx)2Si	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 11 report
Lattice c	0.51276 not_printed ± 9.000e-5	298.15	(Ta1−xVx)3Si	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 8 report
Lattice c	1.19154 not_printed ± 9.000e-5	298.15	(Ta1−xVx)5Si3	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 15 report
Lattice c	0.47752 not_printed ± 6.000e-5	298.15	(Ta1−xVx)5Si3	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 22 report
Lattice c	1.18753 not_printed ± 9.000e-5	298.15	(Ta1−xVx)5Si3	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 16 report
Lattice c	0.4936 not_printed ± 3.000e-4	298.15	(TaxV1−x)6Si5	experimental	[1] Broz 2013 cites Steinmetz 1977 doi	Table 1, p. 3, row 46 report
Lattice c	0.4939 not_printed ± 5.000e-4	298.15	(TaxV1−x)6Si5	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 47 report
Lattice c	0.4926 not_printed ± 3.000e-4	298.15	τ1-(TaxV1−x)5Si3	experimental	[1] Broz 2013 cites Mittal 1978 doi	Table 1, p. 3, row 23 report
Lattice c	8.23 Å	298.15	τ2-Ta(TaVSi)2 alloy: Si 0.285714, Ta 0.428571, V 0.285714	experimental	[1] Broz 2013 cites Mittal 1978 doi	Table 1, p. 3, row 28 report
Lattice c	6.453 Å (range 6.357 to 6.549)	300	(Ta1−xVx)Si2	experimental	[1] Broz 2013 cites Nowotny 1957 doi	Table 1, p. 3, row 52 report
Lattice c	4.95205 Å (range 4.8906 to 5.0135)	300	τ1-(TaxV1−x)5Si3 alloy: Ta 0.2, V 0.2	experimental	[1] Broz 2013 cites Khan 2012 doi	Table 1, p. 3, row 51 report
Lattice c	8.26 Å	300	τ2-Ta(TaVSi)2 alloy: Si 0.285714, Ta 0.428571, V 0.285714	experimental	[1] Broz 2013 cites Ganglberger 1965 doi	Table 1, p. 3, row 27 report

Sources

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

P. Broz, A.U. Khan, H. Niu, X.-Q. Chen, D. Li, J. Vrestal et al., The system Ta–V–Si: Thermodynamic modeling, Journal of Solid State Chemistry 199, 171-180 (2013). doi:10.1016/j.jssc.2012.12.003

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 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_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}
}