FeLaO3: enthalpy of formation

4 accepted literature formation-enthalpy value(s) (experimental 3, model 1); experimental median -270.818 kJ/mol-atom (n = 2).

Systems: Fe–La–O

Literature values

Enthalpy of formation of FeLaO3 reported in the literature (4)
Value	Phase as printed	T (K)	Class	Method	System	Source	Location
-1373.48 kJ/mol (basis unstated) ± 2.61	LaFeO3	298.15	experimental	drop solution calorimetry	Fe–La–O	[1] Povoden-Karadeniz 2009 cites Cheng 2005 doi	Table 1, p. 4, row 2 report
-274.696 kJ/mol-atom ± 0.522	LaFeO3	298.15	experimental	drop solution calorimetry	Fe–La–O	[1] Povoden-Karadeniz 2009 cites Cheng 2005 doi	Table 1, p. 4, row 2 report
-266.94 kJ/mol-atom	LaFeO3	298.15	experimental	Calvet microcalorimetry	Fe–La–O	[1] Povoden-Karadeniz 2009 cites Parida 1998 doi	Table 1, p. 4, row 3 report
-273.64 kJ/mol-atom	LaFeO3	298.15	model		Fe–La–O	[1] Povoden-Karadeniz 2009	Table 1, p. 4, row 1 report

Uncertainty budget

Components kept separate, in the value's unit (literature SCHEMA.md, UNCERTAINTY_CALIBRATION.md): effective = max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter). The method floor is the robust between-study scatter of the method class in ORCHID (calibrated) or a documented prior; printed values and printed uncertainties are unchanged.

Uncertainty budget of the literature values of FeLaO3
Value	Unit	Printed	Reading	Method (class, basis)	Effective
-1373.48	kJ/mol (basis unstated)	2.61	0.005	16 (solution_reaction_calorimetry, calibrated)	16
-274.696	kJ/mol-atom	0.522	0.001	3.2 (solution_reaction_calorimetry, calibrated)	3.2
-266.94	kJ/mol-atom		0.01	3.2 (solution_reaction_calorimetry, calibrated)	3.2
-273.64	kJ/mol-atom		0.01	3.9 (model_calculated, calibrated)	3.9

Sources

E. Povoden-Karadeniz, A. N. Grundy, M. Chen, T. Ivas, L. J. Gauckler, Thermodynamic Assessment of the La-Fe-O System, J. Phase Equilib. Diffus. 30, 351-366 (2009). doi:10.1007/s11669-009-9501-6

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-Parity: DFT-vs-experiment formation-enthalpy benchmark (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735943
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); G. Kim, S. V. Meschel, P. Nash, W. Chen, Experimental formation enthalpies for intermetallic phases and other inorganic compounds, Scientific Data 4 (2017) 170162, https://doi.org/10.1038/sdata.2017.162; 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_dft_benchmark_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Parity: DFT-vs-experiment formation-enthalpy benchmark}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735943},
  url       = {https://doi.org/10.5281/zenodo.23735943},
  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}
}