Au–Ge system

12 accepted literature values from 2 paper(s) (experimental 9, model 2, unspecified 1); 2 calculated phase diagram(s). 7 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 (5) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	9
model	2
unspecified	1

Accepted values by property group
Property group	Values
invariant reaction	6
phase transition	6

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
AuGe-09Wan.tdb	J. Wang, C. Leinenbach, M. Roth, J. Alloys Compd., 481, 830-36(2009). doi:10.1016/j.jallcom.2009.03.114	`8bbcae88b81042e50903c5c95363d98a9ea69f5d093e2696b4f4d579eaf2cb34`	viewer · TDB · JSON
AuGe-89Che-LB.tdb	P.-Y. Chevalier, Thermochim. Acta, 141, 217-26(1989). doi:10.1016/0040-6031(89)87056-X	`a6d58cb0d20f1858de086dca0f037e607313d5f61dcfd2427b1ab882c4ea651c`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AuGe-09Wan.tdb	630.2	FCC_A1 (x(Ge) 0.03309) + LIQUID (x(Ge) 0.29496) + DIAMOND_A4 (x(Ge) 1)
AuGe-09Wan.tdb	630.2	FCC_A1 (x(Ge) 0.03307) + LIQUID (x(Ge) 0.29484) + DIAMOND_A4 (x(Ge) 1)
AuGe-89Che-LB.tdb	633.51	FCC_A1 (x(Ge) 0.03063) + LIQUID (x(Ge) 0.28414) + DIAMOND_A4 (x(Ge) 1)
AuGe-89Che-LB.tdb	633.51	FCC_A1 (x(Ge) 0.03063) + LIQUID (x(Ge) 0.28412) + DIAMOND_A4 (x(Ge) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull AuGe-89Che-LB

Invariant reactions (literature)

Invariant reactions reported in the literature for the Au–Ge system (6)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
634	eutectic: L <-> fcc_A1 + diamond_A4	L: Ge 0.27; diamond_A4: Ge 1	experimental	[1] Wang 2009 cites Legendre 1977	Table 1, p. 2, row 3 report
634	eutectic: L <-> fcc_A1 + diamond_A4	L: Ge 0.28; diamond_A4: Ge 1	experimental	[1] Wang 2009 cites Hassam 1988 doi	Table 1, p. 2, row 4 report
634	eutectic: L <-> fcc_A1 + diamond_A4	L: Ge 0.284; diamond_A4: Ge 1	model	[1] Wang 2009 cites Chevalier 1989 doi	Table 1, p. 2, row 5 report
631	eutectic: L <-> fcc_A1 + diamond_A4	L: Ge 0.294; diamond_A4: Ge 1	model	[1] Wang 2009	Table 1, p. 2, row 6 report
630	eutectic: L <-> fcc_A1 + diamond_A4	L: Ge 0.28; diamond_A4: Ge 1	experimental	[1] Wang 2009 cites Predel 1975 doi	Table 1, p. 2, row 2 report
629	eutectic: L <-> fcc_A1 + diamond_A4	L: Ge 0.27; diamond_A4: Ge 1	experimental	[1] Wang 2009 cites Jaffee 1945	Table 1, p. 2, row 1 report

Other properties

Phase transition (6)

Phase transition, Au–Ge system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	629 K	629	eutectic	experimental	[2] Hassam 1988 cites Jaffee 1945	Table I, p. 2, row 6 report
Phase transition	630 K	630	eutectic	experimental	[2] Hassam 1988 cites Predel 1975 doi	Table I, p. 2, row 8 report
Phase transition	632 K	632	eutectic	experimental	[2] Hassam 1988 cites Einecke 1937	Table I, p. 2, row 5 report
Phase transition	635 K	635	eutectic	unspecified	[2] Hassam 1988 cites Evans 1981	Table I, p. 2, row 10 report
Phase transition	636 K	636	eutectic	experimental	[2] Hassam 1988 cites Owen 1945	Table I, p. 2, row 7 report
Phase transition	637 K	637	eutectic	experimental	[2] Hassam 1988 cites Legendre 1977	Table I, p. 2, row 9 report

Sources

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

J. Wang, C. Leinenbach, M. Roth, Thermodynamic modeling of the Au–Ge–Sn ternary system, Journal of Alloys and Compounds 481, 830-836 (2009). doi:10.1016/j.jallcom.2009.03.114
S. Hassam, M. Gambino, M. Gaune-escard, J.P. Bros, J. ågren, Experimental and Calculated Ag + Au + Ge Phase Diagram, Metall Trans A 19, 409-416 (1988). doi:10.1007/bf02649254

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}
}