Gd system

15 accepted literature values from 6 paper(s) (experimental 6, model 6, unspecified 3); 0 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	6
model	6
unspecified	3

Accepted values by property group
Property group	Values
invariant reaction	2
phase transition	7
crystal structure	6

Invariant reactions (literature)

Invariant reactions reported in the literature for the Gd system (2)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location	Quote
1508.15	polymorphic: βGd ↔ αGd	αGd: Gd 1	model	[1] Wang 2009	Table 3, p. 4, row 5 report
1508.15	polymorphic: βGd ↔ αGd	αGd: Gd 1	experimental	[1] Wang 2009 cites Gschneidner 1985 doi	Table 3, p. 4, row 4 report

Other properties

Phase transition (7)

Phase transition, Gd system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	1508 K	1508	polymorphic: Gd alloy: Gd 1	model	[2] Norgren 2000 cites Saunders 1998	Table 1, p. 4, row 12 report
Phase transition	1508 K	1508	βGd -> αGd βGd:	model	[3] Cui 2013	Table 1, p. 2, row 6 report
Phase transition	1508 K	1508	βGd -> αGd βGd:	experimental	[3] Cui 2013 cites Niessen 1983 doi	Table 1, p. 2, row 4 report
Phase transition	1508.15 K	1508.15	polymorphic: (βGd) <=> (αGd) (βGd): Gd 1	model	[4] Boukideur 2020	Table 3, p. 4, row 30 report
Phase transition	1508.15 K	1508.15	polymorphic: (βGd) <=> (αGd) (βGd): Gd 1	experimental	[4] Boukideur 2020 cites Palenzona 1990 doi	Table 3, p. 4, row 31 report
Phase transition	1535 K	1535	polymorphic: Gd alloy: Gd 1	model	[2] Norgren 2000 cites Dinsdale 1991 doi	Table 1, p. 4, row 11 report
Phase transition	1536 K	1536	polymorphic: Gd alloy: Gd 1	model	[2] Norgren 2000 cites Huasen 1995	Table 1, p. 4, row 13 report

Crystal structure (6)

Crystal structure, Gd system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	4.05 Å	297.15	(βGd) (βGd): Gd 1	unspecified	[5] Alcock 1986 cites ref. 86Gsc2	Table 1, p. 3, row 2 report
Lattice a	3.6336 Å	298.15	(αGd) (αGd): Gd 1	unspecified	[5] Alcock 1986 cites ref. 86Gsc2	Table 1, p. 3, row 1 report
Lattice a	4.05 Å	298.15	bcc(Gd) alloy: Gd 1	experimental	[6] Cui 2023 cites Miller 1964	Table 1, p. 2, row 1 report
Lattice a	6.36 Å	298.15	hcp(Gd) alloy: Gd 1	experimental	[6] Cui 2023 cites Wakabayashi 1968 doi	Table 1, p. 2, row 2 report
Lattice c	5.781 Å	298.15	(αGd) (αGd): Gd 1	unspecified	[5] Alcock 1986 cites ref. 86Gsc2	Table 1, p. 3, row 1 report
Lattice c	5.78 Å	298.15	hcp(Gd) alloy: Gd 1	experimental	[6] Cui 2023 cites Wakabayashi 1968 doi	Table 1, p. 2, row 2 report

Sources

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

S.L. Wang, C.P. Wang, X.J. Liu, K. Ishida, Thermodynamic assessments of the Ag–Gd and Ag–Nd systems, Journal of Alloys and Compounds 476, 245-252 (2009). doi:10.1016/j.jallcom.2008.09.129
Susanne Norgren, Thermodynamic assessment of the Ho-Tb, Ho-Dy, Ho-Er, Er-Tb, and Er-Dy systems, JPE 21, 148-156 (2000). doi:10.1361/105497100770340200
Jiaxin Cui, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic optimization of the Gd–Pb system using random solution and associate models, Calphad 42, 1-5 (2013). doi:10.1016/j.calphad.2013.06.002
M. AiT Boukideur, N. Selhaoui, F.Z. chrifi Alaoui, A. Iddaoudi, K. Achgar, Thermodynamic modeling of the Ga-Gd binary system, Materials Today: Proceedings 24, 71-75 (2020). doi:10.1016/j.matpr.2019.07.598
C. B. Alcock, V. P. Itkin, The Ba−Ca (Barium-Calcium) system, Bulletin of Alloy Phase Diagrams 7, 338-340 (1986). doi:10.1007/bf02873004
Dongyu Cui, Jiong Wang, Jiaqiang Zhou, Thermodynamic Modeling of the Te-X (X = Gd, Dy, Ho) Binary Systems Combined with the First-Principles Method, J. Phase Equilib. Diffus. 44, 456-467 (2023). doi:10.1007/s11669-023-01051-1

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}
}