F–K–Na system

20 accepted literature values from 1 paper(s) (experimental 6, model 1, DFT 13); 0 calculated phase diagram(s).

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

Accepted values by evidence class
Evidence class	Values
experimental	6
model	1
DFT	13

Accepted values by property group
Property group	Values
invariant reaction	7
formation	7
crystal structure	6

Invariant reactions (literature)

Invariant reactions reported in the literature for the F–K–Na system (7)
T (K)	Reaction / phases	Class	Source	Location
994	Liquid = KF + NaF	experimental	[1] Zhang 2006 cites Holm 1965 doi	Table 7, p. 9, row 7 report
989	Liquid = KF + NaF	experimental	[1] Zhang 2006 cites Bergman 1943	Table 7, p. 9, row 4 report
983	Liquid = KF + NaF	experimental	[1] Zhang 2006 cites Platonov 1946	Table 7, p. 9, row 6 report
983	Liquid = KF + NaF	experimental	[1] Zhang 2006 cites Bergman 1942	Table 7, p. 9, row 3 report
983	Liquid = KF + NaF	experimental	[1] Zhang 2006 cites Dombrovskafa 1938	Table 7, p. 9, row 2 report
983	Liquid = KF + NaF	model	[1] Zhang 2006	Table 7, p. 9, row 1 report
972	Liquid = KF + NaF	experimental	[1] Zhang 2006 cites Kurnakov 1907	Table 7, p. 9, row 5 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, F–K–Na system (7)
Phase	Value	Class	Source	Location
F2	0 kJ/mol-atom	DFT	[1] Zhang 2006	Table 2, p. 3, row 21 report
Halite	9.869 kJ/mol-atom	DFT	[1] Zhang 2006	Table 2, p. 3, row 35 report
Halite	19.165 kJ/mol-atom	DFT	[1] Zhang 2006	Table 2, p. 3, row 36 report
Halite	24.312 kJ/mol-atom	DFT	[1] Zhang 2006	Table 2, p. 3, row 37 report
bcc	1.786 kJ/mol-atom	DFT	[1] Zhang 2006	Table 2, p. 3, row 32 report
bcc	2.408 kJ/mol-atom	DFT	[1] Zhang 2006	Table 2, p. 3, row 34 report
bcc	2.994 kJ/mol-atom	DFT	[1] Zhang 2006	Table 2, p. 3, row 33 report

Other properties

Crystal structure (6)

Crystal structure, F–K–Na system
Property	Value	Phases / composition	Class	Source	Location
Lattice a printed: Lattice constant a	3.052 Å	Halite alloy: K 0.125, Na 0.375	DFT	[1] Zhang 2006	Table 2, p. 3, row 37 report
Lattice a printed: Lattice constant a	3.082 Å	Halite alloy: K 0.25, Na 0.25	DFT	[1] Zhang 2006	Table 2, p. 3, row 36 report
Lattice a printed: Lattice constant a	2.869 Å	Halite alloy: K 0.375, Na 0.125	DFT	[1] Zhang 2006	Table 2, p. 3, row 35 report
Lattice a printed: Lattice constant a	5.026 Å	bcc alloy: Na 0.25	DFT	[1] Zhang 2006	Table 2, p. 3, row 32 report
Lattice a printed: Lattice constant a	4.763 Å	bcc alloy: Na 0.5	DFT	[1] Zhang 2006	Table 2, p. 3, row 33 report
Lattice a printed: Lattice constant a	4.508 Å	bcc alloy: Na 0.75	DFT	[1] Zhang 2006	Table 2, p. 3, row 34 report

Sources

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

Shengjun Zhang, Carl Brubaker, Chao Jiang, Mei Yang, Yu Zhong, Qingyou Han et al., A combined first-principles calculation and thermodynamic modeling of the F–K–Na system, Materials Science and Engineering: A 418, 161-171 (2006). doi:10.1016/j.msea.2005.11.037

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}
}