Ag–Ge system

22 accepted literature values from 4 paper(s) (experimental 19, model 3); 3 calculated phase diagram(s). 6 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	19
model	3

Accepted values by property group
Property group	Values
invariant reaction	13
phase transition	6
phase equilibrium	3

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
AgGe-11Wan.tdb	J. Wang, Y.J. Liu, C.Y. Tang, L.B. Liu, H.Y. Zhou, Z.P. Jin, Thermochim. Acta, 512, 240-46(2011). doi:10.1016/j.tca.2010.11.003	`ee980cd7d96cd65640c7356ecc0c7ac3684d5e0d6c9e6bea9532f66373f24559`	viewer · TDB · JSON
AgGe-18Raj.tdb	V.B. Rajkumar, S.-W. Chen, J. Electron. Mater., 47, 3666-77(2018). doi:10.1007/s11664-018-6216-7	`76195dd4c052f435fdc403917b36910abbc5b680653b5b13f0cd57b30ded5082`	viewer · TDB · JSON
AgGe-88Che-LB.tdb	P.-Y. Chevalier, Thermochim. Acta, 130, 25-32(1988). doi:10.1016/0040-6031(88)87047-3	`30d36f0532b3185255f40b154c857353e3d92c9a8fb851b4f3c3340f0eafbb50`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AgGe-11Wan.tdb	920.27	FCC_A1 (x(Ge) 0.09978) + LIQUID (x(Ge) 0.24907) + DIAMOND_A4 (x(Ge) 1)
AgGe-11Wan.tdb	920.27	FCC_A1 (x(Ge) 0.09978) + LIQUID (x(Ge) 0.24906) + DIAMOND_A4 (x(Ge) 1)
AgGe-18Raj.tdb	924.77	FCC_A1 (x(Ge) 0.09584) + LIQUID (x(Ge) 0.25453) + DIAMOND_A4 (x(Ge) 1)
AgGe-18Raj.tdb	924.77	FCC_A1 (x(Ge) 0.09579) + LIQUID (x(Ge) 0.25439) + DIAMOND_A4 (x(Ge) 1)
AgGe-88Che-LB.tdb	923.22	FCC_A1 (x(Ge) 0.09603) + LIQUID (x(Ge) 0.24891) + DIAMOND_A4 (x(Ge) 1)
AgGe-88Che-LB.tdb	923.22	FCC_A1 (x(Ge) 0.09597) + LIQUID (x(Ge) 0.2488) + DIAMOND_A4 (x(Ge) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull AgGe-11Wan · CALPHAD hull AgGe-88Che-LB

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ag–Ge system (13)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
924	eutectic: L -> fcc + dia	fcc: Ge 0.096	experimental	[1] Chevalier 1988 cites Predel 1975 doi	Table 2, p. 5, row 5 report
924	eutectic: L <-> fcc-A1(Ag) + diamond_A4(Ge)	diamond_A4(Ge): Ge 1	experimental	[2] Wang 2011 cites Hume-Rothery 1940	Table 1, p. 2, row 3 report
923.5	eutectic: L <-> fcc-A1(Ag) + diamond_A4(Ge)	L: Ge 0.24; diamond_A4(Ge): Ge 1	experimental	[2] Wang 2011 cites Hassam 1988 doi	Table 1, p. 2, row 5 report
923.4	eutectic: L -> fcc + dia	L: Ge 0.249; fcc: Ge 0.096	model	[1] Chevalier 1988	Table 2, p. 5, row 1 report
923.4	eutectic: L <-> fcc-A1(Ag) + diamond_A4(Ge)	L: Ge 0.249; diamond_A4(Ge): Ge 1	model	[2] Wang 2011 cites Chevalier 1988 doi	Table 1, p. 2, row 6 report
923	eutectic: L -> fcc + dia	L: Ge 0.26; fcc: Ge 0.065	experimental	[1] Chevalier 1988 cites Bull 1980	Table 2, p. 5, row 2 report
923	eutectic: L -> fcc + dia	fcc: Ge 0.081	experimental	[1] Chevalier 1988 cites Owen 1940	Table 2, p. 5, row 6 report
923	eutectic: L <-> fcc-A1(Ag) + diamond_A4(Ge)	L: Ge 0.26; diamond_A4(Ge): Ge 1	experimental	[2] Wang 2011 cites Briggs 1929 doi	Table 1, p. 2, row 1 report
923	eutectic: L -> fcc + dia	L: Ge 0.24	experimental	[1] Chevalier 1988 cites Maucher 1936	Table 2, p. 5, row 4 report
923	eutectic: L <-> fcc-A1(Ag) + diamond_A4(Ge)	L: Ge 0.24; diamond_A4(Ge): Ge 1	experimental	[2] Wang 2011 cites Predel 1975 doi	Table 1, p. 2, row 4 report
922	eutectic: L <-> fcc-A1(Ag) + diamond_A4(Ge)	L: Ge 0.241; diamond_A4(Ge): Ge 1	experimental	[2] Wang 2011 cites Maucher 1936	Table 1, p. 2, row 2 report
922	eutectic: L -> fcc + dia	L: Ge 0.241; fcc: Ge 0.079	experimental	[1] Chevalier 1988 cites Briggs 1929 doi	Table 2, p. 5, row 3 report
921	eutectic: L <-> fcc-A1(Ag) + diamond_A4(Ge)	L: Ge 0.249; diamond_A4(Ge): Ge 1	model	[2] Wang 2011	Table 1, p. 2, row 7 report

Other properties

Phase transition (6)

Phase transition, Ag–Ge system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	922 K	922	eutectic	experimental	[3] Hassam 1988 cites Maucher 1936	Table I, p. 2, row 2 report
Phase transition	923 K	923	eutectic	experimental	[3] Hassam 1988 cites Briggs 1929 doi	Table I, p. 2, row 1 report
Phase transition	924 K	924	eutectic	experimental	[3] Hassam 1988 cites Martin-Garin 1975 doi	Table I, p. 2, row 3 report
Phase transition	1028 K	1028 (>)	other: 7.49 ± 0.742 at.% Ge solidus alloy: Ag 0.9251, Ge 0.0749	experimental	[4] Rajkumar 2018	Table III, p. 5, row 6 report
Phase transition	1073 K	1073 (>)	other: 5.51 ± 0.748 at.% Ge solidus alloy: Ag 0.9449, Ge 0.0551	experimental	[4] Rajkumar 2018	Table III, p. 5, row 4 report
Phase transition	1132 K	1132 (>)	other: 3.67 ± 0.649 at.% Ge solidus alloy: Ag 0.9633, Ge 0.0367	experimental	[4] Rajkumar 2018	Table III, p. 5, row 2 report

Phase equilibrium (3)

Phase equilibrium, Ag–Ge system
Property	T (K)	Phases / composition	Class	Source	Location
Phase composition	1154	other: 7.49 ± 0.742 at.% Ge liquidus liquid: Ag 0.9251, Ge 0.0749	experimental	[4] Rajkumar 2018	Table III, p. 5, row 5 report
Phase composition	1178	other: 5.51 ± 0.748 at.% Ge liquidus liquid: Ag 0.9449, Ge 0.0551	experimental	[4] Rajkumar 2018	Table III, p. 5, row 3 report
Phase composition	1201	other: 3.67 ± 0.649 at.% Ge liquidus liquid: Ag 0.9633, Ge 0.0367	experimental	[4] Rajkumar 2018	Table III, p. 5, row 1 report

Sources

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

P.-Y. Chevalier, Critical assessment of thermodynamic data for the Ag-Ge system, Thermochimica Acta 130, 25-32 (1988). doi:10.1016/0040-6031(88)87047-3
J. Wang, Y.J. Liu, C.Y. Tang, L.B. Liu, H.Y. Zhou, Z.P. Jin, Thermodynamic description of the Au–Ag–Ge ternary system, Thermochimica Acta 512, 240-246 (2011). doi:10.1016/j.tca.2010.11.003
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
V. B. Rajkumar, Sinn-Wen Chen, Phase Equilibria and Thermodynamic Descriptions of Ag-Ge and Ag-Ge-Ni Systems, Journal of Elec Materi 47, 3666-3677 (2018). doi:10.1007/s11664-018-6216-7

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}
}