Pb–Yb system

38 accepted literature values from 1 paper(s) (experimental 23, model 15); 1 calculated phase diagram(s). 5 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (9) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	23
model	15

Accepted values by property group
Property group	Values
invariant reaction	20
formation	18

Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
PbYb-09Idb.tdb	M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Calphad, 33, 570-75(2009). doi:10.1016/j.calphad.2009.05.001	`3e8d2d8ee78b7ae37fbbffa7fb9ef205171b8818f85d134e78093f6ecf0859ed`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
PbYb-09Idb.tdb	1425.18	LIQUID (x(Yb) 0.56591) + PB3YB5_D88 (x(Yb) 0.625) + PBYB2_C37 (x(Yb) 0.66667)
PbYb-09Idb.tdb	1360.43	PBYB_A2 (x(Yb) 0.50996) + LIQUID (x(Yb) 0.54033) + PB3YB5_D88 (x(Yb) 0.625)
PbYb-09Idb.tdb	1057.61	LIQUID (x(Yb) 0.96751) + FCC_A1 (x(Yb) 0.99164) + BCC_A2 (x(Yb) 0.99576)
PbYb-09Idb.tdb	1043.12	PBYB2_C37 (x(Yb) 0.66667) + LIQUID (x(Yb) 0.95338) + FCC_A1 (x(Yb) 0.98931)
PbYb-09Idb.tdb	983.62	PB3YB_L12 (x(Yb) 0.25) + LIQUID (x(Yb) 0.31608) + PBYB_A2 (x(Yb) 0.5)
PbYb-09Idb.tdb	773.7	PBYB_A2 (x(Yb) 0.5) + PBYB_L10 (x(Yb) 0.50004) + PB3YB5_D88 (x(Yb) 0.625)
PbYb-09Idb.tdb	773.7	PBYB_A2 (x(Yb) 0.5) + PBYB_L10 (x(Yb) 0.50004) + PB3YB5_D88 (x(Yb) 0.625)
PbYb-09Idb.tdb	770.08	PB3YB_L12 (x(Yb) 0.25) + PBYB_L10 (x(Yb) 0.5) + PBYB_A2 (x(Yb) 0.5)
PbYb-09Idb.tdb	606.27	LIQUID (x(Yb) 7.500e-4) + FCC_A1 (x(Yb) 0.00811) + PB3YB_L12 (x(Yb) 0.25)
PbYb-09Idb.tdb	606.27	LIQUID (x(Yb) 7.400e-4) + FCC_A1 (x(Yb) 0.00806) + PB3YB_L12 (x(Yb) 0.25)
PbYb-09Idb.tdb	606.27	LIQUID (x(Yb) 7.400e-4) + FCC_A1 (x(Yb) 0.00807) + PB3YB_L12 (x(Yb) 0.25)

Convex hulls: OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Pb–Yb system (20)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1519	congruent melting: Liq ↔PbYb2	Liq: Pb 0.333333, Yb 0.666667; PbYb2: Pb 0.333333, Yb 0.666667	experimental	[1] Idbenali 2009 cites O 1967	Table 3, p. 5, row 15 report
1518	congruent melting: Liq ↔PbYb2	Liq: Pb 0.333333, Yb 0.666667; PbYb2: Pb 0.333333, Yb 0.666667	model	[1] Idbenali 2009	Table 3, p. 5, row 16 report
1423	Liq + PbYb2 Pb3Yb5	PbYb2: Pb 0.333333, Yb 0.666667; Pb3Yb5: Pb 0.375, Yb 0.625	experimental	[1] Idbenali 2009 cites O 1967	Table 3, p. 5, row 13 report
1423	Liq + PbYb2 Pb3Yb5	PbYb2: Pb 0.333333, Yb 0.666667; Pb3Yb5: Pb 0.375, Yb 0.625	model	[1] Idbenali 2009	Table 3, p. 5, row 14 report
1391	congruent melting: Liq ↔βPbYb	Liq: Pb 0.5, Yb 0.5; βPbYb: Pb 0.5, Yb 0.5	model	[1] Idbenali 2009	Table 3, p. 5, row 8 report
1389	congruent melting: Liq ↔βPbYb	Liq: Pb 0.5, Yb 0.5; βPbYb: Pb 0.5, Yb 0.5	experimental	[1] Idbenali 2009 cites O 1967	Table 3, p. 5, row 7 report
1360	Liq ↔Pb3Yb5 + βPbYb	Pb3Yb5: Pb 0.375, Yb 0.625; βPbYb: Pb 0.5, Yb 0.5	model	[1] Idbenali 2009	Table 3, p. 5, row 12 report
1359	Liq ↔Pb3Yb5 + βPbYb	Pb3Yb5: Pb 0.375, Yb 0.625; βPbYb: Pb 0.5, Yb 0.5	experimental	[1] Idbenali 2009 cites O 1967	Table 3, p. 5, row 11 report
1060	Liq + (βYb) ↔ (γYb)		experimental	[1] Idbenali 2009 cites O 1967	Table 3, p. 5, row 19 report
1058	Liq + (βYb) ↔ (γYb)		model	[1] Idbenali 2009	Table 3, p. 5, row 20 report
1044	Liq ↔ (βYb)+ PbYb2	PbYb2: Pb 0.333333, Yb 0.666667	model	[1] Idbenali 2009	Table 3, p. 5, row 18 report
1042	Liq ↔ (βYb)+ PbYb2	PbYb2: Pb 0.333333, Yb 0.666667	experimental	[1] Idbenali 2009 cites O 1967	Table 3, p. 5, row 17 report
1015	congruent melting: Liq ↔Pb3Yb	Liq: Pb 0.75, Yb 0.25; Pb3Yb: Pb 0.75, Yb 0.25	model	[1] Idbenali 2009	Table 3, p. 5, row 4 report
1013	congruent melting: Liq ↔Pb3Yb	Liq: Pb 0.75, Yb 0.25; Pb3Yb: Pb 0.75, Yb 0.25	experimental	[1] Idbenali 2009 cites O 1967	Table 3, p. 5, row 3 report
990	Liq ↔Pb3Yb+ βPbYb	Pb3Yb: Pb 0.75, Yb 0.25; βPbYb: Pb 0.5, Yb 0.5	experimental	[1] Idbenali 2009 cites O 1967	Table 3, p. 5, row 5 report
984.1	Liq ↔Pb3Yb+ βPbYb	Pb3Yb: Pb 0.75, Yb 0.25; βPbYb: Pb 0.5, Yb 0.5	model	[1] Idbenali 2009	Table 3, p. 5, row 6 report
778	αPbYb βPbYb	αPbYb: Pb 0.5, Yb 0.5; βPbYb: Pb 0.5, Yb 0.5	experimental	[1] Idbenali 2009 cites O 1967	Table 3, p. 5, row 9 report
773.6	αPbYb βPbYb	αPbYb: Pb 0.5, Yb 0.5; βPbYb: Pb 0.5, Yb 0.5	model	[1] Idbenali 2009	Table 3, p. 5, row 10 report
606.3	Liq ↔ (Pb)+Pb3Yb	Pb3Yb: Pb 0.75, Yb 0.25	model	[1] Idbenali 2009	Table 3, p. 5, row 2 report
602	Liq ↔ (Pb)+Pb3Yb	Pb3Yb: Pb 0.75, Yb 0.25	experimental	[1] Idbenali 2009 cites O 1967	Table 3, p. 5, row 1 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, Pb–Yb system (18)
Phase	Compound	Value	T (K)	Class	OQMD DFT (kJ/mol-atom)	Source	Location
Pb3Yb	Pb3Yb	-39 kJ/mol-atom ± 1	298.15	experimental	-35.07 (oqmd-17937)	[1] Idbenali 2009 cites Sommer 1995 doi	Table 4, p. 6, row 15 report
Pb3Yb	Pb3Yb	-38.5 kJ/mol-atom ± 3	298.15	experimental	-35.07 (oqmd-17937)	[1] Idbenali 2009 cites Sommer 1995 doi	Table 4, p. 6, row 14 report
Pb3Yb	Pb3Yb	-38.1 kJ/mol-atom ± 1	298.15	experimental	-35.07 (oqmd-17937)	[1] Idbenali 2009 cites Schiffman 1982 doi	Table 4, p. 6, row 16 report
Pb3Yb	Pb3Yb	-37 kJ/mol-atom ± 2	298.15	experimental	-35.07 (oqmd-17937)	[1] Idbenali 2009 cites Palenzona 1973 doi	Table 4, p. 6, row 17 report
Pb3Yb	Pb3Yb	-32.96 kJ/mol-atom		model	-35.07 (oqmd-17937)	[1] Idbenali 2009	Table 4, p. 6, row 18 report
Pb3Yb5	Pb3Yb5	-68.02 kJ/mol-atom		model	-50.708 (oqmd-17938)	[1] Idbenali 2009	Table 4, p. 6, row 8 report
Pb3Yb5	Pb3Yb5	-66.5 kJ/mol-atom ± 2	298.15	experimental	-50.708 (oqmd-17938)	[1] Idbenali 2009 cites Sommer 1995 doi	Table 4, p. 6, row 7 report
Pb3Yb5	Pb3Yb5	-57.7 kJ/mol-atom ± 1	298.15	experimental	-50.708 (oqmd-17938)	[1] Idbenali 2009 cites Schiffman 1982 doi	Table 4, p. 6, row 6 report
Pb3Yb5	Pb3Yb5	-55.5 kJ/mol-atom ± 2	298.15	experimental	-50.708 (oqmd-17938)	[1] Idbenali 2009 cites Sommer 1995 doi	Table 4, p. 6, row 5 report
PbYb2	PbYb2	-67 kJ/mol-atom ± 3	298.15	experimental	-54.999 (oqmd-17936)	[1] Idbenali 2009 cites Sommer 1995 doi	Table 4, p. 6, row 2 report
PbYb2	PbYb2	-66 kJ/mol-atom ± 5	298.15	experimental	-54.999 (oqmd-17936)	[1] Idbenali 2009 cites Sommer 1995 doi	Table 4, p. 6, row 1 report
PbYb2	PbYb2	-59.99 kJ/mol-atom		model	-54.999 (oqmd-17936)	[1] Idbenali 2009	Table 4, p. 6, row 4 report
PbYb2	PbYb2	-58.2 kJ/mol-atom ± 3	298.15	experimental	-54.999 (oqmd-17936)	[1] Idbenali 2009 cites Schiffman 1982 doi	Table 4, p. 6, row 3 report
αPbYb	PbYb	-62.59 kJ/mol-atom		model	-54.442 (oqmd-52379)	[1] Idbenali 2009	Table 4, p. 6, row 9 report
βPbYb	PbYb	-65 kJ/mol-atom ± 2	298.15	experimental	-54.442 (oqmd-52379)	[1] Idbenali 2009 cites Sommer 1995 doi	Table 4, p. 6, row 11 report
βPbYb	PbYb	-64 kJ/mol-atom ± 2.5	298.15	experimental	-54.442 (oqmd-52379)	[1] Idbenali 2009 cites Sommer 1995 doi	Table 4, p. 6, row 10 report
βPbYb	PbYb	-62.16 kJ/mol-atom		model	-54.442 (oqmd-52379)	[1] Idbenali 2009	Table 4, p. 6, row 13 report
βPbYb	PbYb	-57 kJ/mol-atom ± 1	298.15	experimental	-54.442 (oqmd-52379)	[1] Idbenali 2009 cites Schiffman 1982 doi	Table 4, p. 6, row 12 report

Sources

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

M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Thermodynamic description of the Pb–Yb binary system, Calphad 33, 570-575 (2009). doi:10.1016/j.calphad.2009.05.001

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-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735859
R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735891
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_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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}
}