Ge–K system

6 accepted literature values from 1 paper(s) (experimental 3, unspecified 3); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (8) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	3
unspecified	3

Accepted values by property group
Property group	Values
crystal structure	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
GeK-12Wan.tdb	Y. Wang, P. Wang, D. Zhao, B. Hu, Y. Du, H. Xu, K. Chang, Calphad, 37, 72-76(2012). doi:10.1016/j.calphad.2012.01.004	`d591f02833106db824009af2a7238eeb9ae6ed848c7be25ac73bf657fcb171e4`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
GeK-12Wan.tdb	1182.67	DIAMOND_A4 (x(K) 0) + LIQUID (x(K) 0.05799) + GE4K (x(K) 0.2)
GeK-12Wan.tdb	1182.67	DIAMOND_A4 (x(K) 0) + LIQUID (x(K) 0.05777) + GE4K (x(K) 0.2)
GeK-12Wan.tdb	1182.67	DIAMOND_A4 (x(K) 0) + LIQUID (x(K) 0.05771) + GE4K (x(K) 0.2)
GeK-12Wan.tdb	1019.04	GE4K (x(K) 0.2) + LIQUID (x(K) 0.40338) + GEK (x(K) 0.5)
GeK-12Wan.tdb	1019.04	GE4K (x(K) 0.2) + LIQUID (x(K) 0.40336) + GEK (x(K) 0.5)
GeK-12Wan.tdb	846.87	GEK (x(K) 0.5) + LIQUID (x(K) 0.61958) + GEK3 (x(K) 0.75)
GeK-12Wan.tdb	846.87	GEK (x(K) 0.5) + LIQUID (x(K) 0.61957) + GEK3 (x(K) 0.75)
GeK-12Wan.tdb	333.75	GEK3 (x(K) 0.75) + LIQUID (x(K) 0.99362) + BCC_A2 (x(K) 1)
GeK-12Wan.tdb	333.75	GEK3 (x(K) 0.75) + LIQUID (x(K) 0.99369) + BCC_A2 (x(K) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Other properties

Crystal structure (6)

Crystal structure, Ge–K system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	11.15 Å		Ge46K8 alloy: K 0.148148	unspecified	[1] Wang 2012	Table 1, p. 3, row 15 report
Lattice a	12.97 Å		GeK alloy: K 0.5	unspecified	[1] Wang 2012	Table 1, p. 3, row 18 report
Lattice a	10.66 Å	298.15	Ge46K8 alloy: K 0.148148	experimental	[1] Wang 2012 cites Cros 1970 doi	Table 1, p. 3, row 13 report
Lattice a	10.71 Å	298.15	Ge46K8 alloy: K 0.148148	experimental	[1] Wang 2012 cites Gallmeier 1969 doi	Table 1, p. 3, row 14 report
Lattice a	6.44 Å	298.15	Ge4K alloy: K 0.2	unspecified	[1] Wang 2012 cites Potemkin 1989	Table 1, p. 3, row 16 report
Lattice a	12.78 Å	298.15	GeK alloy: K 0.5	experimental	[1] Wang 2012 cites Schafer 1961 doi	Table 1, p. 3, row 17 report

Sources

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

Yaru Wang, Peisheng Wang, Dongdong Zhao, Biao Hu, Yong Du, Honghui Xu et al., Thermodynamic description of the Ge–Na and Ge–K systems using the CALPHAD approach supported by first-principles calculations, Calphad 37, 72-76 (2012). doi:10.1016/j.calphad.2012.01.004

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}
}