Cr–La–O system

46 accepted literature values from 1 paper(s) (experimental 27, model 19); 0 calculated phase diagram(s). 7 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

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Accepted values by evidence class
Evidence class	Values
experimental	27
model	19

Accepted values by property group
Property group	Values
phase transition	19
formation	9
heat capacity / entropy / enthalpy	11
activity / EMF / Gibbs energy	7

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, Cr–La–O system (4)
Phase	Value	T (K)	Class	Source	Location	Quote
La2(CrO4)3	-3961 kJ/mol (basis unstated) ± 11.7	298.15	model	[1] Povoden 2009 cites Tsyrenova	Table 1, p. 3, row 20 report
La2(CrO4)3	-3845 kJ/mol (basis unstated)	298.15	model	[1] Povoden 2009	Table 1, p. 3, row 19 report
La2(CrO4)3	-233 kJ/mol-atom ± 11.7	298.15	experimental	[1] Povoden 2009 cites Tsyrenova	p. 2 report	The enthalpy of formation of La2(CrO4)3 from the elements at 298 K was proposed by Tsyrenova et al.[29] to be -3961 ± 11.7 kJ mol-1.
Rhombohedral LaCrO3	-273.64 kJ/mol-atom	298.15	model	[1] Povoden 2009	Table 1, p. 3, row 1 report

Other properties

Phase transition (19)

Phase transition, Cr–La–O system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	509 K	509	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Hashimoto 1998 doi	Table 2, p. 3, row 19 report
Phase transition	523 K	523	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Hashimoto 2000 doi	Table 2, p. 3, row 16 report
Phase transition	530.5 K	530.5	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Geller 1970 doi	Table 2, p. 3, row 7 report
Phase transition	533 K	533	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Sakai 2000	Table 2, p. 3, row 18 report
Phase transition	533 K	533	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Tolochko 1985	Table 2, p. 3, row 12 report
Phase transition	533 K	533	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Geller 1970 doi	Table 2, p. 3, row 8 report
Phase transition	533 K	533	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Coutures 1980	Table 2, p. 3, row 10 report
Phase transition	535 K	535	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Momin 1991 doi	Table 2, p. 3, row 14 report
Phase transition	536 K	536	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Sakai 1995 doi	Table 2, p. 3, row 4 report
Phase transition	540 K	540	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Tolochko 1985	Table 2, p. 3, row 11 report
Phase transition	540 K	540	polymorphic: Transition temperature, K	model	[1] Povoden 2009	Table 2, p. 3, row 1 report
Phase transition	541 K	541	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Hashimoto 2000 doi	Table 2, p. 3, row 17 report
Phase transition	543 K	543	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Korobeinikova 1976	Table 2, p. 3, row 2 report
Phase transition	543 K	543	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Terao 1973	Table 2, p. 3, row 9 report
Phase transition	544 K	544	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Hofer 1993 doi	Table 2, p. 3, row 3 report
Phase transition	545 K	545	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Momin 1991 doi	Table 2, p. 3, row 13 report
Phase transition	550 K	550	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Ruiz 1967	Table 2, p. 3, row 6 report
Phase transition	550 K	550	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Momin 1991 doi	Table 2, p. 3, row 15 report
Phase transition	563 K	563	polymorphic: Transition temperature, K	experimental	[1] Povoden 2009 cites Pavlikov 1966	Table 2, p. 3, row 5 report

Formation (5)

Formation, Cr–La–O system
Property	Value	T (K)	Phases / composition	Class	Source	Location
hm from compounds printed: Δf,oxides °H	-372 kJ/mol (basis unstated)	298.15	La2(CrO4)3	model	[1] Povoden 2009	Table 1, p. 3, row 22 report
hm from compounds printed: Δf,oxides °H	-8.11111 kJ/mol-atom	298.15	La2CrO6 alloy: La 0.222222, O 0.666667	model	[1] Povoden 2009	Table 1, p. 3, row 17 report
hm from compounds printed: Δf,oxides °H	-14.74 kJ/mol-atom	298.15	Rhombohedral LaCrO3 alloy: La 0.2, O 0.6	model	[1] Povoden 2009	Table 1, p. 3, row 2 report
hm from compounds printed: Δf,oxides °H	-12.47 kJ/mol-atom	975	Rhombohedral LaCrO3 alloy: La 0.2, O 0.6	model	[1] Povoden 2009	Table 1, p. 3, row 3 report
hm from compounds printed: Δf,oxides°H1078K	-14.612 kJ/mol-atom ± 0.558	1078	LaCrO3 alloy: La 0.2, O 0.6	experimental	[1] Povoden 2009 cites Cheng 2005 doi	Table 1, p. 3, row 4 report

Heat capacity / entropy / enthalpy (11)

Heat capacity / entropy / enthalpy, Cr–La–O system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Entropy printed: °S	516 J/mol (basis unstated)/K	298.15	La2(CrO4)3	model	[1] Povoden 2009	Table 1, p. 3, row 21 report
Entropy printed: °S	36.6667 J/mol-atom/K	298.15	La2CrO6 alloy: La 0.222222, O 0.666667	model	[1] Povoden 2009	Table 1, p. 3, row 18 report
Entropy printed: °S	21.84 J/mol-atom/K	298.15	Rhombohedral LaCrO3 alloy: La 0.2, O 0.6	model	[1] Povoden 2009	Table 1, p. 3, row 5 report
Heat content printed: H − H298K	94.4 kJ mol−1	1090	LaCrO3 alloy: La 0.2, O 0.6	experimental	[1] Povoden 2009 cites Yu 2005	Table 1, p. 3, row 12 report
Heat content printed: H − H298K	98.19 kJ mol−1	1090	LaCrO3 alloy: La 0.2, O 0.6	model	[1] Povoden 2009	Table 1, p. 3, row 11 report
Heat content printed: H - H298 K	94.4 kJ mol^-1	1090	Rhombohedral LaCrO3 alloy: La 0.2, O 0.6	experimental	[1] Povoden 2009 cites Yu 2005	Table 1, p. 3, row 12 report
Heat content printed: H - H298 K	98.19 kJ mol^-1	1090	Rhombohedral LaCrO3 alloy: La 0.2, O 0.6	model	[1] Povoden 2009	Table 1, p. 3, row 11 report
Heat content printed: H − H298K	139.2 kJ mol−1	1350	LaCrO3 alloy: La 0.2, O 0.6	experimental	[1] Povoden 2009 cites Yu 2005	Table 1, p. 3, row 14 report
Heat content printed: H − H298K	133.05 kJ mol−1	1350	LaCrO3 alloy: La 0.2, O 0.6	model	[1] Povoden 2009	Table 1, p. 3, row 13 report
Heat content printed: H - H298 K	139.2 kJ mol^-1	1350	Rhombohedral LaCrO3 alloy: La 0.2, O 0.6	experimental	[1] Povoden 2009 cites Yu 2005	Table 1, p. 3, row 14 report
Heat content printed: H - H298 K	133.05 kJ mol^-1	1350	Rhombohedral LaCrO3 alloy: La 0.2, O 0.6	model	[1] Povoden 2009	Table 1, p. 3, row 13 report

Activity / EMF / Gibbs energy (7)

Activity / EMF / Gibbs energy, Cr–La–O system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Gibbs energy printed: Δ°G	-42.29 unknown ± 0.38	1273	LaCrO3 alloy: La 0.2, O 0.6	experimental	[1] Povoden 2009 cites Dudek 2007	Table 1, p. 3, row 8 report
Gibbs energy printed: Δ°G	-30.1 unknown ± 1.5	1273	LaCrO3 alloy: La 0.2, O 0.6	experimental	[1] Povoden 2009 cites Chen 1987	Table 1, p. 3, row 7 report
Gibbs energy printed: Δ°G	-76.75 kJ mol−1	1273	LaCrO3 alloy: La 0.2, O 0.6	model	[1] Povoden 2009	Table 1, p. 3, row 6 report
Gibbs energy printed: Δ°G	-76.75 kJ mol^-1	1273	UNKNOWN alloy: La 0.2, O 0.6	model	[1] Povoden 2009	Table 1, p. 3, row 6 report
Gibbs energy printed: Δ°G	-78.9 unknown ± 1.1	2100	LaCrO3 alloy: La 0.2, O 0.6	experimental	[1] Povoden 2009 cites Peck 1996 doi	Table 1, p. 3, row 10 report
Gibbs energy printed: Δ°G	-79.52 kJ mol−1	2100	LaCrO3 alloy: La 0.2, O 0.6	model	[1] Povoden 2009	Table 1, p. 3, row 9 report
Gibbs energy printed: Δ°G	-79.52 kJ mol^-1	2100	UNKNOWN alloy: La 0.2, O 0.6	model	[1] Povoden 2009	Table 1, p. 3, row 9 report

Sources

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

E. Povoden, M. Chen, A.N. Grundy, T. Ivas, L.J. Gauckler, Thermodynamic Assessment of the La-Cr-O System, J. Phase Equilib. Diffus. 30, 12-27 (2009). doi:10.1007/s11669-008-9463-0

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}
}