Gd–Zn system

26 accepted literature values from 1 paper(s) (experimental 13, model 13); 1 calculated phase diagram(s). 5 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 (12) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	13
model	13

Accepted values by property group
Property group	Values
invariant reaction	26

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
GdZn-15Gro.tdb	J. Groebner, A. Kozlov, X.-Y. Fang, S. Zhu, J.-F. Nie, M.A. Gibson, R. Schmid-Fetzer, Acta Mater., 90, 400-16(2015). doi:10.1016/j.actamat.2015.02.044	`9f155d2a3829e5b7efc5d1daa3acfff0c74ecae59c49261e61508af6052bf111`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
GdZn-15Gro.tdb	1508.12	HCP_A3 (x(Zn) 7.000e-5) + BCC_A2 (x(Zn) 8.000e-5) + LIQUID (x(Zn) 0.04283)
GdZn-15Gro.tdb	1508.12	HCP_A3 (x(Zn) 7.000e-5) + BCC_A2 (x(Zn) 8.000e-5) + LIQUID (x(Zn) 0.04283)
GdZn-15Gro.tdb	1211.89	GDZN_B2 (x(Zn) 0.5) + LIQUID (x(Zn) 0.59415) + GDZN2 (x(Zn) 0.66667)
GdZn-15Gro.tdb	1211.89	GDZN_B2 (x(Zn) 0.5) + LIQUID (x(Zn) 0.59428) + GDZN2 (x(Zn) 0.66667)
GdZn-15Gro.tdb	1211.89	GDZN_B2 (x(Zn) 0.5) + LIQUID (x(Zn) 0.59414) + GDZN2 (x(Zn) 0.66667)
GdZn-15Gro.tdb	1178.54	LIQUID (x(Zn) 0.85796) + GD3ZN22 (x(Zn) 0.88) + GD2ZN17 (x(Zn) 0.89474)
GdZn-15Gro.tdb	1178.54	LIQUID (x(Zn) 0.85759) + GD3ZN22 (x(Zn) 0.88) + GD2ZN17 (x(Zn) 0.89474)
GdZn-15Gro.tdb	1178.53	LIQUID (x(Zn) 0.85778) + GD3ZN22 (x(Zn) 0.88) + GD2ZN17 (x(Zn) 0.89474)
GdZn-15Gro.tdb	1175.03	GDZN2 (x(Zn) 0.66667) + LIQUID (x(Zn) 0.74822) + GDZN3 (x(Zn) 0.75)
GdZn-15Gro.tdb	1175.03	GDZN2 (x(Zn) 0.66667) + LIQUID (x(Zn) 0.74804) + GDZN3 (x(Zn) 0.75)
GdZn-15Gro.tdb	1167.36	GD13ZN58 (x(Zn) 0.8169) + LIQUID (x(Zn) 0.84673) + GD3ZN22 (x(Zn) 0.88)
GdZn-15Gro.tdb	1167.36	GD13ZN58 (x(Zn) 0.8169) + LIQUID (x(Zn) 0.84663) + GD3ZN22 (x(Zn) 0.88)
GdZn-15Gro.tdb	1166.38	LIQUID (x(Zn) 0.78503) + GD3ZN11 (x(Zn) 0.78571) + GD13ZN58 (x(Zn) 0.8169)
GdZn-15Gro.tdb	1166.38	LIQUID (x(Zn) 0.78516) + GD3ZN11 (x(Zn) 0.78571) + GD13ZN58 (x(Zn) 0.8169)
GdZn-15Gro.tdb	1166.38	LIQUID (x(Zn) 0.78497) + GD3ZN11 (x(Zn) 0.78571) + GD13ZN58 (x(Zn) 0.8169)
GdZn-15Gro.tdb	1164.42	GDZN3 (x(Zn) 0.75) + LIQUID (x(Zn) 0.77482) + GD3ZN11 (x(Zn) 0.78571)
GdZn-15Gro.tdb	1164.41	GDZN3 (x(Zn) 0.75) + LIQUID (x(Zn) 0.77495) + GD3ZN11 (x(Zn) 0.78571)
GdZn-15Gro.tdb	1044.71	HCP_A3 (x(Zn) 6.000e-5) + LIQUID (x(Zn) 0.28032) + GDZN_B2 (x(Zn) 0.5)
GdZn-15Gro.tdb	1044.71	HCP_A3 (x(Zn) 6.000e-5) + LIQUID (x(Zn) 0.28033) + GDZN_B2 (x(Zn) 0.5)
GdZn-15Gro.tdb	932.14	GD2ZN17 (x(Zn) 0.89474) + GDZN12_D2B (x(Zn) 0.92308) + LIQUID (x(Zn) 0.99305)
GdZn-15Gro.tdb	932.14	GD2ZN17 (x(Zn) 0.89474) + GDZN12_D2B (x(Zn) 0.92308) + LIQUID (x(Zn) 0.99303)
GdZn-15Gro.tdb	692.67	GDZN12_D2B (x(Zn) 0.92308) + HCP_A3 (x(Zn) 1) + LIQUID (x(Zn) 1)
GdZn-15Gro.tdb	692.67	GDZN12_D2B (x(Zn) 0.92308) + HCP_A3 (x(Zn) 1) + LIQUID (x(Zn) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Gd–Zn system (26)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1294.75	congruent melting: L = GdZn	L: Zn 0.5; GdZn: Gd 0.5, Zn 0.5	model	[1] Gröbner 2015	Table 2, p. 3, row 4 report
1293.15	congruent melting: L = GdZn	L: Zn 0.5; GdZn: Gd 0.5, Zn 0.5	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 3 report
1285.05	congruent melting: L = GdZn2	L: Zn 0.667; GdZn2: Gd 0.333333, Zn 0.666667	model	[1] Gröbner 2015	Table 2, p. 3, row 8 report
1283.15	congruent melting: L = GdZn2	L: Zn 0.667; GdZn2: Gd 0.333333, Zn 0.666667	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 7 report
1218.15	L = GdZn + GdZn2	L: Zn 0.59; GdZn: Gd 0.5, Zn 0.5; GdZn2: Gd 0.333333, Zn 0.666667	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 5 report
1215.45	L = GdZn + GdZn2	L: Zn 0.594; GdZn: Gd 0.5, Zn 0.5; GdZn2: Gd 0.333333, Zn 0.666667	model	[1] Gröbner 2015	Table 2, p. 3, row 6 report
1208.15	L + Gd2Zn17	L: Zn 0.895; Gd2Zn17: Gd 0.105263, Zn 0.894737	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 21 report
1205.55	L + Gd2Zn17	L: Zn 0.895; Gd2Zn17: Gd 0.105263, Zn 0.894737	model	[1] Gröbner 2015	Table 2, p. 3, row 22 report
1193.15	congruent melting: L = Gd13Zn58	L: Zn 0.817; Gd13Zn58: Gd 0.183099, Zn 0.816901	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 15 report
1185.95	congruent melting: L = Gd13Zn58	L: Zn 0.817; Gd13Zn58: Gd 0.183099, Zn 0.816901	model	[1] Gröbner 2015	Table 2, p. 3, row 16 report
1183.15	L + Gd2Zn17 = Gd3Zn22	L: Zn 0.85; Gd2Zn17: Gd 0.105263, Zn 0.894737; Gd3Zn22: Gd 0.12, Zn 0.88	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 19 report
1179.85	L + Gd2Zn17 = Gd3Zn22	L: Zn 0.858; Gd2Zn17: Gd 0.105263, Zn 0.894737; Gd3Zn22: Gd 0.12, Zn 0.88	model	[1] Gröbner 2015	Table 2, p. 3, row 20 report
1178.15	L = GdZn2 + GdZn3	L: Zn 0.755; GdZn2: Gd 0.333333, Zn 0.666667; GdZn3: Gd 0.25, Zn 0.75	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 9 report
1177.65	L = GdZn2 + GdZn3	L: Zn 0.748; GdZn2: Gd 0.333333, Zn 0.666667; GdZn3: Gd 0.25, Zn 0.75	model	[1] Gröbner 2015	Table 2, p. 3, row 10 report
1168.95	L = Gd13Zn58 + Gd3Zn22	L: Zn 0.847; Gd13Zn58: Gd 0.183099, Zn 0.816901; Gd3Zn22: Gd 0.12, Zn 0.88	model	[1] Gröbner 2015	Table 2, p. 3, row 18 report
1168.65	L + Gd13Zn58 = Gd3Zn11	L: Zn 0.785; Gd13Zn58: Gd 0.183099, Zn 0.816901; Gd3Zn11: Gd 0.214286, Zn 0.785714	model	[1] Gröbner 2015	Table 2, p. 3, row 14 report
1166.75	L = GdZn3 + Gd3Zn11	L: Zn 0.775; GdZn3: Gd 0.25, Zn 0.75; Gd3Zn11: Gd 0.214286, Zn 0.785714	model	[1] Gröbner 2015	Table 2, p. 3, row 12 report
1158.15	L = Gd13Zn58 + Gd3Zn22	L: Zn 0.84; Gd13Zn58: Gd 0.183099, Zn 0.816901; Gd3Zn22: Gd 0.12, Zn 0.88	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 17 report
1153.15	L + Gd13Zn58 = Gd3Zn11	L: Zn 0.775; Gd13Zn58: Gd 0.183099, Zn 0.816901; Gd3Zn11: Gd 0.214286, Zn 0.785714	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 13 report
1148.15	L = GdZn3 + Gd3Zn11	L: Zn 0.77; GdZn3: Gd 0.25, Zn 0.75; Gd3Zn11: Gd 0.214286, Zn 0.785714	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 11 report
1053.45	L = (Gd) + GdZn	L: Zn 0.282; GdZn: Gd 0.5, Zn 0.5	model	[1] Gröbner 2015	Table 2, p. 3, row 2 report
1053.15	L = (Gd) + GdZn	L: Zn 0.27; GdZn: Gd 0.5, Zn 0.5	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 1 report
933.15	L + Gd2Zn17 = GdZn12	L: Zn 0.985; Gd2Zn17: Gd 0.105263, Zn 0.894737; GdZn12: Gd 0.076923, Zn 0.923077	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 23 report
932.45	L + Gd2Zn17 = GdZn12	L: Zn 0.993; Gd2Zn17: Gd 0.105263, Zn 0.894737; GdZn12: Gd 0.076923, Zn 0.923077	model	[1] Gröbner 2015	Table 2, p. 3, row 24 report
693.15	L = GdZn12 + (Zn)	L: Zn 0.995; GdZn12: Gd 0.076923, Zn 0.923077	experimental	[1] Gröbner 2015 cites Bruzzone 1970 doi	Table 2, p. 3, row 25 report
692.65	L = GdZn12 + (Zn)	L: Zn 0.999; GdZn12: Gd 0.076923, Zn 0.923077	model	[1] Gröbner 2015	Table 2, p. 3, row 26 report

Sources

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

Joachim Gröbner, Artem Kozlov, Xi-Ya Fang, Suming Zhu, Jian-Feng Nie, Mark A. Gibson et al., Phase equilibria and transformations in ternary Mg–Gd–Zn alloys, Acta Materialia 90, 400-416 (2015). doi:10.1016/j.actamat.2015.02.044

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}
}