Fe–Gd–Mo system

72 accepted literature values from 1 paper(s) (experimental 36, model 20, unspecified 16); 0 calculated phase diagram(s). 1 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

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Accepted values by evidence class
Evidence class	Values
experimental	36
model	20
unspecified	16

Accepted values by property group
Property group	Values
invariant reaction	19
phase transition	21
heat capacity / entropy / enthalpy	32

Invariant reactions (literature)

Invariant reactions reported in the literature for the Fe–Gd–Mo system (19)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1673	quasi-peritectic: U2: L+σ+R->τ		experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 5, p. 5, row 6 report
1642	quasi-peritectic: U2: L+σ+R->τ	L: Gd 0.116, Mo 0.22	model	[1] Zinkevich 2002	Table 5, p. 5, row 5 report
1613	quasi-peritectic: U3: L+σ->τ+(Mo)		experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 5, p. 5, row 8 report
1604	quasi-peritectic: U9: L+fccFe->bccFe+Fe17Gd2	L: Gd 0.123, Mo 0.005	model	[1] Zinkevich 2002	Table 5, p. 5, row 19 report
1592	quasi-peritectic: U8: L+R->bccFe+τ	L: Gd 0.071, Mo 0.173	model	[1] Zinkevich 2002	Table 5, p. 5, row 1 report
1589	quasi-peritectic: U1: L+bccFe->Fe17Gd2+τ		experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 5, p. 5, row 4 report
1557	quasi-peritectic: U8: L+R->bccFe+τ		experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 5, p. 5, row 2 report
1520	quasi-peritectic: U3: L+σ->τ+(Mo)	L: Gd 0.312, Mo 0.177	model	[1] Zinkevich 2002	Table 5, p. 5, row 7 report
1497	quasi-peritectic: U1: L+bccFe->Fe17Gd2+τ	L: Gd 0.145, Mo 0.094	model	[1] Zinkevich 2002	Table 5, p. 5, row 3 report
1447	quasi-peritectic: U4: L+Fe17Gd2->τ+Fe23Gd6	L: Gd 0.221, Mo 0.084	model	[1] Zinkevich 2002	Table 5, p. 5, row 9 report
1439	quasi-peritectic: U4: L+Fe17Gd2->τ+Fe23Gd6		experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 5, p. 5, row 10 report
1343	quasi-peritectic: U7: L+Fe3Gd->τ+Fe2Gd		experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 5, p. 5, row 14 report
1343	quasi-peritectic: U5: L+Fe23Gd6->τ+Fe3Gd		experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 5, p. 5, row 12 report
1255.1	quasi-peritectic: U5: L+Fe23Gd6->τ+Fe3Gd	L: Gd 0.401, Mo 0.094	model	[1] Zinkevich 2002	Table 5, p. 5, row 11 report
1255	quasi-peritectic: U7: L+Fe3Gd->τ+Fe2Gd	L: Gd 0.401, Mo 0.094	model	[1] Zinkevich 2002	Table 5, p. 5, row 13 report
1123	quasi-peritectic: U6: L+τ->Fe2Gd+(Mo)		experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 5, p. 5, row 16 report
925	quasi-peritectic: U6: L+τ->Fe2Gd+(Mo)	L: Gd 0.484, Mo 0.131	model	[1] Zinkevich 2002	Table 5, p. 5, row 15 report
923	eutectic: E2: L->Fe2Gd+Gd+(Mo)		experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 5, p. 5, row 18 report
920	eutectic: E2: L->Fe2Gd+Gd+(Mo)	L: Gd 0.487, Mo 0.13	model	[1] Zinkevich 2002	Table 5, p. 5, row 17 report

Other properties

Phase transition (21)

Phase transition, Fe–Gd–Mo system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	229 K	229	magnetic	experimental	[1] Zinkevich 2002	p. 6 report	For the sample of composition Fe61.0Gd9.3Mo29.7 a second order phase transition at TΩ229 K has been detected (Fig. 8), which can be associated with the vanishing of magnetic ordering.
Phase transition	1077 K	1077	other: Fe2Gd alloy: Fe 0.36, Gd 0.58, Mo 0.06	model	[1] Zinkevich 2002	Table 6, p. 6, row 19 report
Phase transition	1265 K	1265	other: Fe2Gd alloy: Fe 0.36, Gd 0.58, Mo 0.06	experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 6, p. 6, row 20 report
Phase transition	1303 K	1303	other: τ alloy: Fe 0.469, Gd 0.409, Mo 0.122	model	[1] Zinkevich 2002	Table 6, p. 6, row 11 report
Phase transition	1448 K	1448	other: τ alloy: Fe 0.514, Gd 0.346, Mo 0.14	model	[1] Zinkevich 2002	Table 6, p. 6, row 9 report
Phase transition	1460 K	1460	other: τ alloy: Fe 0.647, Gd 0.248, Mo 0.105	model	[1] Zinkevich 2002	Table 6, p. 6, row 7 report
Phase transition	1477 K	1477	other: τ alloy: Fe 0.696, Gd 0.204, Mo 0.1	model	[1] Zinkevich 2002	Table 6, p. 6, row 5 report
Phase transition	1571 K	1571	other: τ alloy: Fe 0.469, Gd 0.409, Mo 0.122	experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 6, p. 6, row 12 report
Phase transition	1617 K	1617	other: bccFe alloy: Fe 0.856, Gd 0.094, Mo 0.05	model	[1] Zinkevich 2002	Table 6, p. 6, row 3 report
Phase transition	1631 K	1631	other: bccFe alloy: Fe 0.856, Gd 0.094, Mo 0.05	experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 6, p. 6, row 4 report
Phase transition	1641 K	1641	other: τ alloy: Fe 0.514, Gd 0.346, Mo 0.14	experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 6, p. 6, row 10 report
Phase transition	1670 K	1670	other: τ alloy: Fe 0.696, Gd 0.204, Mo 0.1	experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 6, p. 6, row 6 report
Phase transition	1680 K	1680	other: σ alloy: Fe 0.657, Gd 0.103, Mo 0.24	model	[1] Zinkevich 2002	Table 6, p. 6, row 13 report
Phase transition	1689 K	1689	other: τ alloy: Fe 0.647, Gd 0.248, Mo 0.105	experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 6, p. 6, row 8 report
Phase transition	1705 K	1705	other: bccFe alloy: Fe 0.909, Gd 0.046, Mo 0.045	model	[1] Zinkevich 2002	Table 6, p. 6, row 1 report
Phase transition	1743 K	1743	other: bccFe alloy: Fe 0.909, Gd 0.046, Mo 0.045	experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 6, p. 6, row 2 report
Phase transition	1743 K	1743	other: σ alloy: Fe 0.62, Gd 0.103, Mo 0.277	model	[1] Zinkevich 2002	Table 6, p. 6, row 15 report
Phase transition	1773 K	1773	other: (Mo) alloy: Fe 0.555, Gd 0.2, Mo 0.245	experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 6, p. 6, row 18 report
Phase transition	1778 K	1778	other: σ alloy: Fe 0.657, Gd 0.103, Mo 0.24	experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 6, p. 6, row 14 report
Phase transition	1786 K	1786	other: (Mo) alloy: Fe 0.555, Gd 0.2, Mo 0.245	model	[1] Zinkevich 2002	Table 6, p. 6, row 17 report
Phase transition	1843 K	1843	other: σ alloy: Fe 0.62, Gd 0.103, Mo 0.277	experimental	[1] Zinkevich 2002 cites Zinkevitch 1999	Table 6, p. 6, row 16 report

Heat capacity / entropy / enthalpy (32)

Heat capacity / entropy / enthalpy, Fe–Gd–Mo system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Entropy printed: °S	36.51 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.699, Gd 0.107, Mo 0.194	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 3 report
Entropy printed: °S	37.79 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 5 report
Entropy printed: °S	35 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.765, Gd 0.088, Mo 0.147	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 2 report
Entropy printed: °S	38.34 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.699, Gd 0.107, Mo 0.194	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 4 report
Entropy printed: °S	35.86 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 6 report
Entropy printed: °S	34.83 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.765, Gd 0.088, Mo 0.147	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 1 report
Heat capacity printed: Cp	27.79 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.699, Gd 0.107, Mo 0.194	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 3 report
Heat capacity printed: Cp	25.63 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 5 report
Heat capacity printed: Cp	29.16 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.765, Gd 0.088, Mo 0.147	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 2 report
Heat capacity printed: Cp	39.18 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.699, Gd 0.107, Mo 0.194	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 4 report
Heat capacity printed: Cp	26.56 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 6 report
Heat capacity printed: Cp	28.04 J/mol (basis unstated)/K	298.15	τ alloy: Fe 0.765, Gd 0.088, Mo 0.147	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 1 report
Heat capacity printed: Cp	28.63 J/mol (basis unstated)/K	320	τ alloy: Fe 0.765, Gd 0.088, Mo 0.147	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 7 report
Heat capacity printed: Cp	26.98 J/mol (basis unstated)/K	320	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 20 report
Heat capacity printed: Cp	25.96 J/mol (basis unstated)/K	320	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 19 report
Heat capacity printed: Cp	30.6 J/mol (basis unstated)/K	320	τ alloy: Fe 0.765, Gd 0.088, Mo 0.147	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 8 report
Heat capacity printed: Cp	29.42 J/mol (basis unstated)/K	400	τ alloy: Fe 0.699, Gd 0.107, Mo 0.194	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 14 report
Heat capacity printed: Cp	28.84 J/mol (basis unstated)/K	400	τ alloy: Fe 0.699, Gd 0.107, Mo 0.194	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 13 report
Heat capacity printed: Cp	28.2 J/mol (basis unstated)/K	450	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 22 report
Heat capacity printed: Cp	27.52 J/mol (basis unstated)/K	450	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 21 report
Heat capacity printed: Cp	30.57 J/mol (basis unstated)/K	591	τ alloy: Fe 0.765, Gd 0.088, Mo 0.147	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 9 report
Heat capacity printed: Cp	29.96 J/mol (basis unstated)/K	591	τ alloy: Fe 0.699, Gd 0.107, Mo 0.194	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 15 report
Heat capacity printed: Cp	30.09 J/mol (basis unstated)/K	591	τ alloy: Fe 0.699, Gd 0.107, Mo 0.194	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 16 report
Heat capacity printed: Cp	30.46 J/mol (basis unstated)/K	591	τ alloy: Fe 0.765, Gd 0.088, Mo 0.147	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 10 report
Heat capacity printed: Cp	29.27 J/mol (basis unstated)/K	600	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 24 report
Heat capacity printed: Cp	28.61 J/mol (basis unstated)/K	600	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 23 report
Heat capacity printed: Cp	29.81 J/mol (basis unstated)/K	681	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 26 report
Heat capacity printed: Cp	29.22 J/mol (basis unstated)/K	681	τ alloy: Fe 0.61, Gd 0.093, Mo 0.297	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 25 report
Heat capacity printed: Cp	31.47 J/mol (basis unstated)/K	756	τ alloy: Fe 0.765, Gd 0.088, Mo 0.147	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 11 report
Heat capacity printed: Cp	30.96 J/mol (basis unstated)/K	756	τ alloy: Fe 0.765, Gd 0.088, Mo 0.147	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 12 report
Heat capacity printed: Cp	31.06 J/mol (basis unstated)/K	769	τ alloy: Fe 0.699, Gd 0.107, Mo 0.194	unspecified	[1] Zinkevich 2002	Table 8, p. 10, row 17 report
Heat capacity printed: Cp	30.76 J/mol (basis unstated)/K	769	τ alloy: Fe 0.699, Gd 0.107, Mo 0.194	experimental	[1] Zinkevich 2002	Table 8, p. 10, row 18 report

Sources

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

Matvei Zinkevich, Norbert Mattern, Hans‐Jürgen Seifert, Eberhard Gmelin, A thermodynamic assessment of the Fe‐Gd‐Mo system, Scand Jof Metallurgy 31, 34-51 (2002). doi:10.1034/j.1600-0692.2002.311310106.x

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 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_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}
}