Er–Sb system

42 accepted literature values from 2 paper(s) (experimental 23, model 19); 1 calculated phase diagram(s). 4 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	19

Accepted values by property group
Property group	Values
invariant reaction	28
phase transition	2
formation	11
mixing / partial	1

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
ErSb-11Wan.tdb	S.L. Wang, Z.B. Hu, F. Gao, C.P. Wang, X.J. Liu, Calphad, 35, 473-78(2011). doi:10.1016/j.calphad.2011.08.001	`af95d657f5e4a5775ccaee480cccada64894a655e89a7dd5aaa766df11e8c052`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
ErSb-11Wan.tdb	2083.22	ERSB_B1 (x(Sb) 0.5) + ERSB_BETA (x(Sb) 0.5) + LIQUID (x(Sb) 0.66398)
ErSb-11Wan.tdb	2083.22	LIQUID (x(Sb) 0.35043) + ERSB_B1 (x(Sb) 0.5) + ERSB_BETA (x(Sb) 0.5)
ErSb-11Wan.tdb	1912.92	LIQUID (x(Sb) 0.29909) + ER5SB3 (x(Sb) 0.375) + ERSB_B1 (x(Sb) 0.5)
ErSb-11Wan.tdb	1912.92	LIQUID (x(Sb) 0.29919) + ER5SB3 (x(Sb) 0.375) + ERSB_B1 (x(Sb) 0.5)
ErSb-11Wan.tdb	1801.99	HCP_A3 (x(Sb) 0) + LIQUID (x(Sb) 0) + ERSB_B1 (x(Sb) 0.5)
ErSb-11Wan.tdb	1443.29	HCP_A3 (x(Sb) 0.01399) + LIQUID (x(Sb) 0.13214) + ER5SB3 (x(Sb) 0.375)
ErSb-11Wan.tdb	1443.29	HCP_A3 (x(Sb) 0.01397) + LIQUID (x(Sb) 0.13208) + ER5SB3 (x(Sb) 0.375)
ErSb-11Wan.tdb	922.25	ERSB_B1 (x(Sb) 0.5) + ERSB2 (x(Sb) 0.66667) + LIQUID (x(Sb) 0.98661)
ErSb-11Wan.tdb	922.25	ERSB_B1 (x(Sb) 0.5) + ERSB2 (x(Sb) 0.66667) + LIQUID (x(Sb) 0.9866)
ErSb-11Wan.tdb	900.1	ERSB2 (x(Sb) 0.66667) + LIQUID (x(Sb) 0.98957) + RHOMBOHEDRAL_A7 (x(Sb) 1)
ErSb-11Wan.tdb	900.1	ERSB2 (x(Sb) 0.66667) + LIQUID (x(Sb) 0.98958) + RHOMBOHEDRAL_A7 (x(Sb) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Er–Sb system (28)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location	Quote
2313.15	congruent melting: L -> βErSb	L: Sb 0.5; βErSb: Sb 0.5	model	[1] Wang 2011	Table 1, p. 3, row 8 report
2313.15	congruent melting: L -> βErSb	L: Sb 0.5; βErSb: Sb 0.5	experimental	[1] Wang 2011 cites Abdusalyamova 1993 doi	Table 1, p. 3, row 7 report
2313	congruent melting: liq. -> βErSb	liq.: Er 0.5, Sb 0.5; βErSb: Er 0.5, Sb 0.5	model	[2] Wang 2011	Table 4, p. 9, row 5 report
2313	congruent melting: liq. -> βErSb	liq.: Er 0.5, Sb 0.5; βErSb: Er 0.5, Sb 0.5	experimental	[2] Wang 2011 cites Abdusalyamova 2002 doi	Table 4, p. 9, row 6 report
2083.25	polymorphic: αErSb -> βErSb	αErSb: Er 0.5, Sb 0.5; βErSb: Sb 0.5	model	[1] Wang 2011	Table 1, p. 3, row 6 report
2083.15	polymorphic: αErSb -> βErSb	αErSb: Er 0.5, Sb 0.5; βErSb: Sb 0.5	experimental	[1] Wang 2011 cites Abdusalyamova 1993 doi	Table 1, p. 3, row 5 report
2083	polymorphic: αErSb -> βErSb	αErSb: Er 0.5, Sb 0.5; βErSb: Er 0.5, Sb 0.5	experimental	[2] Wang 2011 cites Abdusalyamova 2002 doi	Table 4, p. 9, row 12 report
2083	polymorphic: αErSb -> βErSb	αErSb: Er 0.5, Sb 0.5; βErSb: Er 0.5, Sb 0.5	model	[2] Wang 2011	Table 4, p. 9, row 11 report
1913.15	peritectic: L + αErSb -> Er5Sb3	αErSb: Sb 0.5; Er5Sb3: Sb 0.375	experimental	[1] Wang 2011 cites Abdusalyamova 1993 doi	Table 1, p. 3, row 3 report
1913.15	peritectic		experimental	[1] Wang 2011 cites Abdusalyamova 1993 doi	p. 1 report	Later, based on thermal, microstructural, and X-ray diffraction analysis, Abdusalyamova [6] investigated the phase diagram in the Er-Sb system, and reported three stoichiometric compounds: Er5 Sb3 (peritectic formation at 1640 °C), ErSb (melting point 2040 °C), and ErSb2 (peritectic formation at 650 °C).
1913	liq. + αErSb -> Er5Sb3	liq.: Sb 0.3005; αErSb: Er 0.5, Sb 0.5; Er5Sb3: Er 0.625, Sb 0.375	model	[2] Wang 2011	Table 4, p. 9, row 3 report
1913	liq. + αErSb -> Er5Sb3	αErSb: Er 0.5, Sb 0.5; Er5Sb3: Er 0.625, Sb 0.375	experimental	[2] Wang 2011 cites Abdusalyamova 2002 doi	Table 4, p. 9, row 4 report
1912.95	peritectic: L + αErSb -> Er5Sb3	L: Sb 0.299; αErSb: Sb 0.5; Er5Sb3: Sb 0.375	model	[1] Wang 2011	Table 1, p. 3, row 4 report
1443.25	eutectic: L -> (Er) + Er5Sb3	L: Sb 0.132; (Er): Sb 0.014; Er5Sb3: Sb 0.25	model	[1] Wang 2011	Table 1, p. 3, row 2 report
1443.15	eutectic: L -> (Er) + Er5Sb3	L: Sb 0.155; Er5Sb3: Sb 0.25	experimental	[1] Wang 2011 cites Abdusalyamova 2000 doi	Table 1, p. 3, row 1 report
1443	eutectic: liq. -> hcp + Er5Sb3	liq.: Sb 0.1396; hcp: Sb 0.0242; Er5Sb3: Er 0.625, Sb 0.375	model	[2] Wang 2011	Table 4, p. 9, row 1 report
1443	eutectic: liq. -> hcp + Er5Sb3	liq.: Sb 0.155; Er5Sb3: Er 0.625, Sb 0.375	experimental	[2] Wang 2011 cites Abdusalyamova 2002 doi	Table 4, p. 9, row 2 report
923.15	peritectic: L + αErSb -> ErSb2	αErSb: Sb 0.5; ErSb2: Sb 0.667	experimental	[1] Wang 2011 cites Abdusalyamova 1988	Table 1, p. 3, row 9 report
923.15	peritectic: L + αErSb -> ErSb2	L: Sb 0.987; αErSb: Sb 0.5; ErSb2: Sb 0.667	model	[1] Wang 2011	Table 1, p. 3, row 10 report
923.15	peritectic		experimental	[1] Wang 2011 cites Abdusalyamova 1993 doi	p. 1 report	Later, based on thermal, microstructural, and X-ray diffraction analysis, Abdusalyamova [6] investigated the phase diagram in the Er-Sb system, and reported three stoichiometric compounds: Er5 Sb3 (peritectic formation at 1640 °C), ErSb (melting point 2040 °C), and ErSb2 (peritectic formation at 650 °C).
923	liq. + αErSb -> ErSb2	liq.: Sb 0.9627; αErSb: Er 0.5, Sb 0.5; ErSb2: Er 0.333333, Sb 0.666667	model	[2] Wang 2011	Table 4, p. 9, row 7 report
923	liq. + αErSb -> ErSb2	liq.: Sb 0.976; αErSb: Er 0.5, Sb 0.5; ErSb2: Er 0.333333, Sb 0.666667	experimental	[2] Wang 2011 cites Abdusalyamova 2002 doi	Table 4, p. 9, row 8 report
903.15	eutectic: L -> ErSb2 + (Sb)	ErSb2: Sb 0.667; (Sb): Sb 1	experimental	[1] Wang 2011 cites Okamoto 1995 doi	Table 1, p. 3, row 11 report
900.15	eutectic: L -> ErSb2 + (Sb)	L: Sb 0.99; ErSb2: Sb 0.667; (Sb): Sb 1	model	[1] Wang 2011	Table 1, p. 3, row 14 report
898.15	eutectic: L -> ErSb2 + (Sb)	L: Sb 0.99; ErSb2: Sb 0.667; (Sb): Sb 1	experimental	[1] Wang 2011 cites Abdusalyamova 2000 doi	Table 1, p. 3, row 12 report
893.15	eutectic: L -> ErSb2 + (Sb)	L: Sb 0.994; ErSb2: Sb 0.667; (Sb): Sb 1	experimental	[1] Wang 2011 cites Abdusalyamova 2002 doi	Table 1, p. 3, row 13 report
893	eutectic: liq. -> ErSb2 + rhom	liq.: Sb 0.9728; ErSb2: Er 0.333333, Sb 0.666667	model	[2] Wang 2011	Table 4, p. 9, row 9 report
893	eutectic: liq. -> ErSb2 + rhom	liq.: Sb 0.994; ErSb2: Er 0.333333, Sb 0.666667	experimental	[2] Wang 2011 cites Abdusalyamova 2002 doi	Table 4, p. 9, row 10 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, Er–Sb system (6)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
Er5Sb3	Er5Sb3	-83.05 kJ/mol-atom		model	-92.052 (mp-aaaaatem)	-85.758 (oqmd-99705)	[1] Wang 2011	Table 3, p. 3, row 1 report
ErSb2	ErSb2	-75.6 kJ/mol-atom	298.15	experimental	-30.891 (mp-aaacfydz)	-67.126 (oqmd-1436071)	[1] Wang 2011 cites Goryacheva 1981	Table 3, p. 3, row 5 report
ErSb2	ErSb2	-75.142 kJ/mol-atom		model	-30.891 (mp-aaacfydz)	-67.126 (oqmd-1436071)	[1] Wang 2011	Table 3, p. 3, row 6 report
αErSb	ErSb	-113.4 kJ/mol-atom	298.15	experimental	-114.05 (mp-aaaaadgh)	-105.779 (oqmd-8168)	[1] Wang 2011 cites Goryacheva 1981	Table 3, p. 3, row 2 report
αErSb	ErSb	-111.583 kJ/mol-atom		model	-114.05 (mp-aaaaadgh)	-105.779 (oqmd-8168)	[1] Wang 2011	Table 3, p. 3, row 4 report
αErSb	ErSb	-109 kJ/mol-atom	298.15	experimental	-114.05 (mp-aaaaadgh)	-105.779 (oqmd-8168)	[1] Wang 2011 cites Pratt 1970	Table 3, p. 3, row 3 report

Other properties

Phase transition (2)

Phase transition, Er–Sb system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	923.15 K	923.15	ErSb2	experimental	[1] Wang 2011 cites Abdusalyamova 1988	p. 1 report	Abdusalyamova et al. [5] were the first to report incongruent melting of the ErSb2 phase at 650 °C by means of differential thermal analysis (DTA).
Phase transition	2313.15 K	2313.15	ErSb	experimental	[1] Wang 2011 cites Abdusalyamova 1993 doi	p. 1 report	Later, based on thermal, microstructural, and X-ray diffraction analysis, Abdusalyamova [6] investigated the phase diagram in the Er-Sb system, and reported three stoichiometric compounds: Er5 Sb3 (peritectic formation at 1640 °C), ErSb (melting point 2040 °C), and ErSb2 (peritectic formation at 650 °C).

Formation (5)

Formation, Er–Sb system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Entropy of formation printed: standard entropies of formation	-1.23 J/mol-atom/K		Er5Sb3 alloy: Sb 0.375	model	[1] Wang 2011	Table 4, p. 3, row 1 report
Entropy of formation printed: standard entropies of formation	-5.507 J/mol-atom/K		ErSb2 alloy: Sb 0.666667	model	[1] Wang 2011	Table 4, p. 3, row 5 report
Entropy of formation printed: standard entropies of formation	-7.314 J/mol-atom/K		αErSb alloy: Sb 0.5	model	[1] Wang 2011	Table 4, p. 3, row 3 report
Entropy of formation printed: standard entropies of formation	-5 J/mol-atom/K	298.15	ErSb2 alloy: Sb 0.666667	experimental	[1] Wang 2011 cites Goryacheva 1981	Table 4, p. 3, row 4 report
Entropy of formation printed: standard entropies of formation	-7.6 J/mol-atom/K	298.15	αErSb alloy: Sb 0.5	experimental	[1] Wang 2011 cites Goryacheva 1981	Table 4, p. 3, row 2 report

Mixing / partial (1)

Mixing / partial, Er–Sb system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Enthalpy of mixing printed: enthalpies of mixing	-52.936 kJ/mol (basis unstated)	2373.15		model	[1] Wang 2011	p. 4 report	Fig. 6 shows the calculated enthalpies of mixing of the liquid phase at 2100 °C with reference states of pure Er (liquid) and Sb (liquid) in the Er-Sb binary system. The calculated value at 50 at% Sb is -52.936 kJ/mol, which is very close to the value of -53 kJ/mol predicted by Colinet et al. [12].

Sources

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

S.L. Wang, Z.B. Hu, F. Gao, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Er–Sb and Sb–Tm systems, Calphad 35, 473-478 (2011). doi:10.1016/j.calphad.2011.08.001
Wei Wang, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic description of the Er–Fe–Sb system, Calphad 35, 292-301 (2011). doi:10.1016/j.calphad.2011.04.001

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}
}