Sb3Zn4: enthalpy of formation

10 accepted literature formation-enthalpy value(s) (experimental 5, model 5); experimental median -10.7 kJ/mol-atom (n = 5); OQMD 14.359 kJ/mol-atom (oqmd-760143).

Systems: Sb–Zn

Literature values

Enthalpy of formation of Sb3Zn4 reported in the literature (10)
Value	Phase as printed	T (K)	Class	Method	System	Source	Location
-20.551 kJ/mol-atom	δ′-Sb3Zn4	826	experimental	emf	Sb–Zn	[1] Li 2007 cites DeWitt 1939 doi	Table 4, p. 4, row 16 report
-12.379 kJ/mol-atom	δ-Sb3Zn4	806	experimental	emf	Sb–Zn	[1] Li 2007 cites DeWitt 1939 doi	Table 4, p. 4, row 18 report
-10.7 kJ/mol-atom	ε-Sb3Zn4	420	experimental	emf	Sb–Zn	[1] Li 2007 cites Goryacheva 1997	Table 4, p. 4, row 22 report
-5.28 kJ/mol-atom	ε-Sb3Zn4	600	experimental	emf	Sb–Zn	[1] Li 2007 cites Zabdyr 1981	Table 4, p. 4, row 24 report
-4.35 kJ/mol-atom	δ-Sb3Zn4	800	experimental	emf	Sb–Zn	[1] Li 2007 cites Zabdyr 1981	Table 4, p. 4, row 20 report
-17.878 kJ/mol-atom	δ-Sb3Zn4	806	model		Sb–Zn	[1] Li 2007	Table 4, p. 4, row 17 report
-16.028 kJ/mol-atom	δ′-Sb3Zn4	826	model		Sb–Zn	[1] Li 2007	Table 4, p. 4, row 15 report
-10.707 kJ/mol-atom	δ-Sb3Zn4	800	model		Sb–Zn	[1] Li 2007	Table 4, p. 4, row 19 report
-9.378 kJ/mol-atom	ε-Sb3Zn4	600	model		Sb–Zn	[1] Li 2007	Table 4, p. 4, row 23 report
-9.378 kJ/mol-atom	ε-Sb3Zn4	420	model		Sb–Zn	[1] Li 2007	Table 4, p. 4, row 21 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 Sb3Zn4
Value	Unit	Reading	Method (class, basis)	Effective
-20.551	kJ/mol-atom	5.000e-4	4.6 (emf, cleaned_below_threshold)	4.6
-12.379	kJ/mol-atom	5.000e-4	4.6 (emf, cleaned_below_threshold)	4.6
-10.7	kJ/mol-atom	0.05	4.6 (emf, cleaned_below_threshold)	4.6
-5.28	kJ/mol-atom	0.005	4.6 (emf, cleaned_below_threshold)	4.6
-4.35	kJ/mol-atom	0.005	4.6 (emf, cleaned_below_threshold)	4.6
-17.878	kJ/mol-atom	5.000e-4	3.9 (model_calculated, calibrated)	3.9
-16.028	kJ/mol-atom	5.000e-4	3.9 (model_calculated, calibrated)	3.9
-10.707	kJ/mol-atom	5.000e-4	3.9 (model_calculated, calibrated)	3.9
-9.378	kJ/mol-atom	5.000e-4	3.9 (model_calculated, calibrated)	3.9
-9.378	kJ/mol-atom	5.000e-4	3.9 (model_calculated, calibrated)	3.9

DFT formation energies

Lowest-energy entries at this composition. Materials Project and OQMD use different energy references and are never averaged. 1 eV/atom = 96.485 kJ/mol-atom.

DFT formation energy of Sb3Zn4
Source	Entry	kJ/mol-atom	eV/atom	Space group	E above hull (kJ/mol-atom)	E above hull (eV/atom)	Theoretical
OQMD	oqmd-760143	14.359	0.14882	Pm	17.3279	0.1796	yes

DFT sources: A. Jain et al., Commentary: The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002. doi:10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501-1509; S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010. doi:10.1007/s11837-013-0755-4 (CC BY 4.0);

Sources

Jing-Bo Li, Marie-Christine Record, Jean-Claude Tedenac, A thermodynamic assessment of the Sb–Zn system, Journal of Alloys and Compounds 438, 171-177 (2007). doi:10.1016/j.jallcom.2006.08.035

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}
}