O–Ru system

14 accepted literature values from 1 paper(s) (experimental 7, model 2, DFT 5); 0 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · phases (7) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	7
model	2
DFT	5

Accepted values by property group
Property group	Values
invariant reaction	3
formation	7
crystal structure	4

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the O–Ru system (3)
T (K)	Reaction / phases	Class	Source	Location
2607	eutectic: Liquid -> (Ru)-HCP + Gas	model	[1] Gossé 2018	Table 5, p. 8, row 1 report
1815	other: (Ru)-HCP + Gas -> RuO2	model	[1] Gossé 2018	Table 5, p. 8, row 2 report
1813	other: (Ru)-HCP + Gas -> RuO2	experimental	[1] Gossé 2018 cites Bell 1963 doi	Table 5, p. 8, row 3 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, O–Ru system (7)
Phase	Value	T (K)	Class	Source	Location
RuO2	-314.15 kJ/mol (basis unstated) ± 0.02	298.15	experimental	[1] Gossé 2018 cites Cordfunke 1988 doi	Table 2, p. 5, row 11 report
RuO2	-314.13 kJ/mol (basis unstated)	298.15	DFT	[1] Gossé 2018 cites Grillo 2004 doi	Table 2, p. 5, row 6 report
RuO2	-313.67 kJ/mol (basis unstated) ± 0.29	298.15	experimental	[1] Gossé 2018 cites St 1997	Table 2, p. 5, row 7 report
RuO2	-313.52 kJ/mol (basis unstated) ± 0.03	298.15	experimental	[1] Gossé 2018 cites Jacob 2000 doi	Table 2, p. 5, row 10 report
RuO2	-306.27 kJ/mol (basis unstated) ± 6.3	298.15	experimental	[1] Gossé 2018 cites Tagirov 1975	Table 2, p. 5, row 4 report
RuO2	-302.08 kJ/mol (basis unstated) ± 8.37	298.15	experimental	[1] Gossé 2018 cites Bell 1963 doi	Table 2, p. 5, row 8 report
RuO2	-297.08 kJ/mol (basis unstated)	298.15	experimental	[1] Gossé 2018 cites Sch 1963	Table 2, p. 5, row 9 report

Other properties

Crystal structure (4)

Crystal structure, O–Ru system
Property	Value	Phases / composition	Class	Source	Location
Lattice a	5.293 Å	Ru2O3	DFT	[1] Gossé 2018 cites Muller 1968 doi	Table 3, p. 5, row 1 report
Lattice a	4.4968 not_printed ± 2.000e-4	RuO2	DFT	[1] Gossé 2018 cites Muller 1968 doi	Table 3, p. 5, row 1 report
Lattice c	12.984 Å	Ru2O3	DFT	[1] Gossé 2018 cites Muller 1968 doi	Table 3, p. 5, row 2 report
Lattice c	3.1049 not_printed ± 1.000e-4	RuO2	DFT	[1] Gossé 2018 cites Muller 1968 doi	Table 3, p. 5, row 2 report

Sources

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

S. Gossé, S. Bordier, C. Guéneau, E. Brackx, R. Domenger, J. Rogez, Thermodynamic assessment of the rhodium-ruthenium-oxygen (Rh-Ru-O) system, Journal of Nuclear Materials 500, 252-264 (2018). doi:10.1016/j.jnucmat.2017.12.034

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-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); 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); 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. 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_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}
}