H–La–Ni system

17 accepted literature values from 2 paper(s) (experimental 12, model 3, DFT 1, unspecified 1); 0 calculated phase diagram(s). 2 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

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

Accepted values by evidence class
Evidence class	Values
experimental	12
model	3
DFT	1
unspecified	1

Accepted values by property group
Property group	Values
formation	16
crystal structure	1

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, H–La–Ni system (16)
Phase	Value	T (K)	Class	Source	Location
LaHx	-63.7 kJ/mol-atom	917	experimental	[1] Palumbo 2009 cites Dantzer 1980 doi	Table 1, p. 2, row 2 report
LaHx	-63.6 kJ/mol-atom	917	model	[1] Palumbo 2009	Table 1, p. 2, row 1 report
LaNi5Hx	-21 kJ/mol-atom	298.15	DFT	[1] Palumbo 2009 cites Hector 2003 doi	Table 1, p. 2, row 20 report
LaNi5Hx	-20.1 kJ/mol-atom	223.5	model	[1] Palumbo 2009 cites Ohlendorf 1980 doi	Table 1, p. 2, row 10 report
LaNi5Hx	-20 kJ/mol-atom	285	experimental	[1] Palumbo 2009 cites Murray 1981 doi	Table 1, p. 2, row 18 report
LaNi5Hx	-19.9 kJ/mol-atom	320.5	model	[1] Palumbo 2009	Table 1, p. 2, row 11 report
LaNi5Hx	-19.7 kJ/mol-atom	298.15	experimental	[1] Palumbo 2009 cites Hubbard 1980	Table 1, p. 2, row 19 report
LaNi5Hx	-19.6 kJ/mol-atom	296.5	experimental	[1] Palumbo 2009 cites Biris 2009	Table 1, p. 2, row 13 report
LaNi5Hx	-19.6 kJ/mol-atom	273.15	experimental	[1] Palumbo 2009 cites Ohlendorf 1980 doi	Table 1, p. 2, row 15 report
LaNi5Hx	-19.4 kJ/mol-atom	298.15	experimental	[1] Palumbo 2009 cites Ohlendorf 1980 doi	Table 1, p. 2, row 14 report
LaNi5Hx	-19.3 kJ/mol-atom	296	experimental	[1] Palumbo 2009 cites Pedziwiatr 1983 doi	Table 1, p. 2, row 17 report
LaNi5Hx	-19.2 kJ/mol-atom	298.15	experimental	[1] Palumbo 2009 cites Bowerman 1979 doi	Table 1, p. 2, row 7 report
LaNi5Hx	-19.1 kJ/mol-atom	195	experimental	[1] Palumbo 2009 cites Ohlendorf 1980 doi	Table 1, p. 2, row 16 report
LaNi5Hx	-19 kJ/mol-atom	324	experimental	[1] Palumbo 2009 cites J 1970	Table 1, p. 2, row 9 report
LaNi5Hx	-18.8 kJ/mol-atom	363	experimental	[1] Palumbo 2009 cites H 1976	Table 1, p. 2, row 8 report
LaNi5Hx	-18.8 kJ/mol-atom	320.5	experimental	[1] Palumbo 2009 cites Anderson 1973	Table 1, p. 2, row 12 report

Other properties

Crystal structure (1)

Crystal structure, H–La–Ni system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Lattice a	5.409 Å	298.15	LaNi5H7 alloy: La 0.076923, Ni 0.384615	unspecified	[2] An 2013	Table 3, p. 5, row 16 report

Sources

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

M. Palumbo, J. Urgnani, D. Baldissin, L. Battezzati, M. Baricco, Thermodynamic assessment of the H–La–Ni system, Calphad 33, 162-169 (2009). doi:10.1016/j.calphad.2008.09.003
X.H. An, Q.F. Gu, J.Y. Zhang, S.L. Chen, X.B. Yu, Q. Li, Experimental investigation and thermodynamic reassessment of La–Ni and LaNi5–H systems, Calphad 40, 48-55 (2013). doi:10.1016/j.calphad.2012.12.002

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}
}