Eu–In system

17 accepted literature values from 1 paper(s) (experimental 6, model 9, unspecified 2); 1 calculated phase diagram(s). 8 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 (10) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	6
model	9
unspecified	2

Accepted values by property group
Property group	Values
invariant reaction	12
phase transition	5

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
EuIn-11Gao.tdb	F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Calphad, 35, 1-5(2011). doi:10.1016/j.calphad.2010.10.003	`f11aee1473af832483323672b87176f469a771c9b88cd84e68f659b62daf95b3`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
EuIn-11Gao.tdb	1136.17	EUIN_B11 (x(In) 0.5) + LIQUID (x(In) 0.58219) + EUIN2 (x(In) 0.66667)
EuIn-11Gao.tdb	1136.17	EUIN_B11 (x(In) 0.5) + LIQUID (x(In) 0.58214) + EUIN2 (x(In) 0.66667)
EuIn-11Gao.tdb	1136.17	EUIN_B11 (x(In) 0.5) + LIQUID (x(In) 0.58233) + EUIN2 (x(In) 0.66667)
EuIn-11Gao.tdb	985.13	EU2IN_HT (x(In) 0.33333) + LIQUID (x(In) 0.33396) + EUIN_B11 (x(In) 0.5)
EuIn-11Gao.tdb	985.13	EU2IN_HT (x(In) 0.33333) + LIQUID (x(In) 0.33423) + EUIN_B11 (x(In) 0.5)
EuIn-11Gao.tdb	933.13	LIQUID (x(In) 0.21273) + EU2IN_C37 (x(In) 0.33333) + EU2IN_HT (x(In) 0.33333)
EuIn-11Gao.tdb	933.12	EU2IN_HT (x(In) 0.33333) + EU2IN_C37 (x(In) 0.33333) + EUIN_B11 (x(In) 0.5)
EuIn-11Gao.tdb	933.12	LIQUID (x(In) 0.21214) + EU2IN_HT (x(In) 0.33333) + EU2IN_C37 (x(In) 0.33333)
EuIn-11Gao.tdb	893.02	BCC_A2 (x(In) 0) + LIQUID (x(In) 0.16138) + EU2IN_C37 (x(In) 0.33333)
EuIn-11Gao.tdb	893.02	BCC_A2 (x(In) 0) + LIQUID (x(In) 0.16134) + EU2IN_C37 (x(In) 0.33333)
EuIn-11Gao.tdb	893.02	BCC_A2 (x(In) 0) + LIQUID (x(In) 0.16115) + EU2IN_C37 (x(In) 0.33333)
EuIn-11Gao.tdb	723.16	EUIN2 (x(In) 0.66667) + EUIN4 (x(In) 0.8) + LIQUID (x(In) 0.85339)
EuIn-11Gao.tdb	723.16	EUIN2 (x(In) 0.66667) + EUIN4 (x(In) 0.8) + LIQUID (x(In) 0.8532)
EuIn-11Gao.tdb	427.31	EUIN4 (x(In) 0.8) + LIQUID (x(In) 0.99524) + TETRAGONAL_A6 (x(In) 1)
EuIn-11Gao.tdb	427.31	EUIN4 (x(In) 0.8) + LIQUID (x(In) 0.99528) + TETRAGONAL_A6 (x(In) 1)
EuIn-11Gao.tdb	427.31	EUIN4 (x(In) 0.8) + LIQUID (x(In) 0.99531) + TETRAGONAL_A6 (x(In) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Eu–In system (12)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location	Quote
1136.15	L ↔ InEu+In2Eu	L: In 0.582; InEu: In 0.5; In2Eu: In 0.667	model	[1] Gao 2011	Table 1, p. 2, row 5 report
1133.15	L ↔ InEu+In2Eu	L: In 0.535; InEu: In 0.5; In2Eu: In 0.667	experimental	[1] Gao 2011 cites Yatsenko 1983 doi	Table 1, p. 2, row 6 report
985.15	L+InEu ↔ βInEu2	L: In 0.333; InEu: In 0.5; βInEu2: In 0.3333	model	[1] Gao 2011	Table 1, p. 2, row 3 report
983.15	L+InEu ↔ βInEu2	L: In 0.333; InEu: In 0.5; βInEu2: In 0.333	unspecified	[1] Gao 2011 cites Okamoto 1990 doi	Table 1, p. 2, row 4 report
893.15	eutectic: L ↔ (Eu)+ In2 Eu		experimental	[1] Gao 2011 cites Yatsenko 1983 doi	p. 1 report	Yatsenko et al. [11] also found another eutectic reaction in this system, L ↔ (Eu)+ In2 Eu, and determined the eutectic point was at about 15 at.% In and 620 °C.
893.15	L ↔ (Eu)+αInEu2	L: In 0.161; (Eu): In 0; αInEu2: In 0.3333	model	[1] Gao 2011	Table 1, p. 2, row 1 report
893.15	L ↔ (Eu)+αInEu2	L: In 0.15; (Eu): In 0; αInEu2: In 0.333	experimental	[1] Gao 2011 cites Yatsenko 1983 doi	Table 1, p. 2, row 2 report
723.15	L+In2Eu ↔ In4Eu	L: In 0.91; In2Eu: In 0.667; In4Eu: In 0.8	experimental	[1] Gao 2011 cites Yatsenko 1983 doi	Table 1, p. 2, row 8 report
723.15	L+In2Eu ↔ In4Eu	L: In 0.854; In2Eu: In 0.667; In4Eu: In 0.8	model	[1] Gao 2011	Table 1, p. 2, row 7 report
723.15	peritectic: L + In2 Eu ↔ In4 Eu		model	[1] Gao 2011 cites Yatsenko 1983 doi	p. 1 report	In Yatsenko's work [11], the temperature of a peritectic reaction, L + In2 Eu ↔ In4 Eu, was 450 °C, which was used in the present assessment considering the dependability.
429.15	L ↔ (In)+In4Eu	L: In 1; (In): In 1; In4Eu: In 0.8	unspecified	[1] Gao 2011 cites Okamoto 1990 doi	Table 1, p. 2, row 10 report
427.15	L ↔ (In)+In4Eu	L: In 0.995; (In): In 1; In4Eu: In 0.8	model	[1] Gao 2011	Table 1, p. 2, row 9 report

Other properties

Phase transition (5)

Phase transition, Eu–In system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	1181.15 K	1181.15	congruent transformation	experimental	[1] Gao 2011 cites Koster 1965	p. 1 report	The congruent melting temperature of InEu was reported to be 908 °C by Koster et al. [9] and 920 °C by Yatsenko et al. [11].
Phase transition	1193.15 K	1193.15	congruent transformation	model	[1] Gao 2011 cites Yatsenko 1983 doi	p. 1 report	The congruent melting temperature of InEu was reported to be 908 °C by Koster et al. [9] and 920 °C by Yatsenko et al. [11].
Phase transition	1193.15 K	1193.15	congruent transformation	model	[1] Gao 2011	p. 3 report	The calculated congruent melting temperatures of the InEu and In2 Eu phases are 920 °C and 980 °C, agreeing with the experimental data [9,11].
Phase transition	1253.15 K	1253.15	congruent transformation	experimental	[1] Gao 2011 cites Koster 1965	p. 1 report	The congruent melting temperature of the In2 Eu phase is 980 °C determined by Koster et al. [9] and Yatsenko et al. [11].
Phase transition	1253.15 K	1253.15	congruent transformation	model	[1] Gao 2011	p. 3 report	The calculated congruent melting temperatures of the InEu and In2 Eu phases are 920 °C and 980 °C, agreeing with the experimental data [9,11].

Sources

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

F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the In–Eu and In–Yb systems, Calphad 35, 1-5 (2011). doi:10.1016/j.calphad.2010.10.003

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}
}