Ga–Sc system

23 accepted literature values from 1 paper(s) (experimental 13, model 10); 1 calculated phase diagram(s). 2 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 (10) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	13
model	10

Accepted values by property group
Property group	Values
invariant reaction	16
phase transition	7

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
GaSc-08Jun.tdb	Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, J. Alloys Compd., 463, 511-15(2008). doi:10.1016/j.jallcom.2007.09.067	`d874299ef43a14d4cec04fba7825801a0c30046bd5ec3400cd4f44e3e1e7549c`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
GaSc-08Jun.tdb	1607.99	LIQUID (x(Sc) 0.87834) + BCC_A2 (x(Sc) 1) + HCP_A3 (x(Sc) 1)
GaSc-08Jun.tdb	1607.99	LIQUID (x(Sc) 0.87859) + HCP_A3 (x(Sc) 1) + BCC_A2 (x(Sc) 1)
GaSc-08Jun.tdb	1509.27	LIQUID (x(Sc) 0.52029) + GA4SC5 (x(Sc) 0.55556) + GA3SC5 (x(Sc) 0.625)
GaSc-08Jun.tdb	1509.27	LIQUID (x(Sc) 0.52059) + GA4SC5 (x(Sc) 0.55556) + GA3SC5 (x(Sc) 0.625)
GaSc-08Jun.tdb	1509.27	LIQUID (x(Sc) 0.52021) + GA4SC5 (x(Sc) 0.55556) + GA3SC5 (x(Sc) 0.625)
GaSc-08Jun.tdb	1372.01	LIQUID (x(Sc) 0.45052) + GASC_B33 (x(Sc) 0.5) + GA4SC5 (x(Sc) 0.55556)
GaSc-08Jun.tdb	1372.01	LIQUID (x(Sc) 0.45071) + GASC_B33 (x(Sc) 0.5) + GA4SC5 (x(Sc) 0.55556)
GaSc-08Jun.tdb	1372.01	LIQUID (x(Sc) 0.45044) + GASC_B33 (x(Sc) 0.5) + GA4SC5 (x(Sc) 0.55556)
GaSc-08Jun.tdb	1334.21	GA2SC (x(Sc) 0.33333) + LIQUID (x(Sc) 0.42702) + GASC_B33 (x(Sc) 0.5)
GaSc-08Jun.tdb	1334.21	GA2SC (x(Sc) 0.33333) + LIQUID (x(Sc) 0.42712) + GASC_B33 (x(Sc) 0.5)
GaSc-08Jun.tdb	1334.21	GA2SC (x(Sc) 0.33333) + LIQUID (x(Sc) 0.4269) + GASC_B33 (x(Sc) 0.5)
GaSc-08Jun.tdb	1332.34	GA3SC5 (x(Sc) 0.625) + LIQUID (x(Sc) 0.80082) + HCP_A3 (x(Sc) 1)
GaSc-08Jun.tdb	1332.34	GA3SC5 (x(Sc) 0.625) + LIQUID (x(Sc) 0.80076) + HCP_A3 (x(Sc) 1)
GaSc-08Jun.tdb	1303.59	LIQUID (x(Sc) 0.22327) + GA3SC_L12 (x(Sc) 0.25) + GA2SC (x(Sc) 0.33333)
GaSc-08Jun.tdb	1303.59	LIQUID (x(Sc) 0.22313) + GA3SC_L12 (x(Sc) 0.25) + GA2SC (x(Sc) 0.33333)
GaSc-08Jun.tdb	302.91	ORTHORHOMBIC_A11 (x(Sc) 0) + LIQUID (x(Sc) 0) + GA3SC_L12 (x(Sc) 0.25)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ga–Sc system (16)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1710	congruent melting: L -> Sc5Ga3	L: Ga 0.375, Sc 0.625; Sc5Ga3: Ga 0.375, Sc 0.625	model	[1] Jun 2008	Table 3, p. 3, row 12 report
1703	congruent melting: L -> Sc5Ga3	L: Ga 0.375, Sc 0.625; Sc5Ga3: Ga 0.375, Sc 0.625	experimental	[1] Jun 2008 cites Yatsenko 1979 doi	Table 3, p. 3, row 11 report
1509	peritectic: L + Sc5Ga3 -> Sc5Ga4	L: Ga 0.48; Sc5Ga3: Ga 0.375, Sc 0.625; Sc5Ga4: Ga 0.444444, Sc 0.555556	model	[1] Jun 2008	Table 3, p. 3, row 6 report
1503	peritectic: L + Sc5Ga3 -> Sc5Ga4	Sc5Ga3: Ga 0.375, Sc 0.625; Sc5Ga4: Ga 0.444444, Sc 0.555556	experimental	[1] Jun 2008 cites Yatsenko 1979 doi	Table 3, p. 3, row 5 report
1422	congruent melting: L -> ScGa2	L: Ga 0.666667, Sc 0.333333; ScGa2: Ga 0.666667, Sc 0.333333	model	[1] Jun 2008	Table 3, p. 3, row 14 report
1413	congruent melting: L -> ScGa2	L: Ga 0.666667, Sc 0.333333; ScGa2: Ga 0.666667, Sc 0.333333	experimental	[1] Jun 2008 cites Yatsenko 1979 doi	Table 3, p. 3, row 13 report
1372	peritectic: L + Sc5Ga4 -> ScGa	L: Ga 0.549; Sc5Ga4: Ga 0.444444, Sc 0.555556; ScGa: Ga 0.5, Sc 0.5	model	[1] Jun 2008	Table 3, p. 3, row 8 report
1363	peritectic: L + Sc5Ga4 -> ScGa	Sc5Ga4: Ga 0.444444, Sc 0.555556; ScGa: Ga 0.5, Sc 0.5	experimental	[1] Jun 2008 cites Yatsenko 1979 doi	Table 3, p. 3, row 7 report
1343	eutectic: L -> ScGa + ScGa2	L: Ga 0.57; ScGa: Ga 0.5, Sc 0.5; ScGa2: Ga 0.666667, Sc 0.333333	experimental	[1] Jun 2008 cites Yatsenko 1979 doi	Table 3, p. 3, row 3 report
1334	eutectic: L -> ScGa + ScGa2	L: Ga 0.573; ScGa: Ga 0.5, Sc 0.5; ScGa2: Ga 0.666667, Sc 0.333333	model	[1] Jun 2008	Table 3, p. 3, row 4 report
1333	eutectic: L -> hcp(Sc) + Sc5Ga3	L: Ga 0.2; Sc5Ga3: Ga 0.375, Sc 0.625	experimental	[1] Jun 2008 cites Yatsenko 1979 doi	Table 3, p. 3, row 1 report
1332	eutectic: L -> hcp(Sc) + Sc5Ga3	L: Ga 0.199; Sc5Ga3: Ga 0.375, Sc 0.625	model	[1] Jun 2008	Table 3, p. 3, row 2 report
1303	peritectic: L + ScGa2 -> ScGa3	L: Ga 0.777; ScGa2: Ga 0.666667, Sc 0.333333; ScGa3: Ga 0.75, Sc 0.25	model	[1] Jun 2008	Table 3, p. 3, row 10 report
1303	peritectic: L + ScGa2 -> ScGa3	ScGa2: Ga 0.666667, Sc 0.333333; ScGa3: Ga 0.75, Sc 0.25	experimental	[1] Jun 2008 cites Yatsenko 1979 doi	Table 3, p. 3, row 9 report
303	eutectic: L -> orth(Ga) + ScGa3	ScGa3: Ga 0.75, Sc 0.25	model	[1] Jun 2008	Table 3, p. 3, row 16 report
303	eutectic: L -> orth(Ga) + ScGa3	L: Ga 0.01; ScGa3: Ga 0.75, Sc 0.25	experimental	[1] Jun 2008 cites Yatsenko 1979 doi	Table 3, p. 3, row 15 report

Other properties

Phase transition (7)

Phase transition, Ga–Sc system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	1303 K	1303	ScGa3	experimental	[1] Jun 2008 cites Yatsenko 1979 doi	p. 1 report	Among them, Sc5 Ga4 , ScGa and ScGa3 decompose at 1503, 1363 and 1303 K, respectively.
Phase transition	1363 K	1363	ScGa	experimental	[1] Jun 2008 cites Yatsenko 1979 doi	p. 1 report	Among them, Sc5 Ga4 , ScGa and ScGa3 decompose at 1503, 1363 and 1303 K, respectively.
Phase transition	1413 K	1413	congruent transformation	experimental	[1] Jun 2008	p. 1 report	Sc5 Ga3 and ScGa2 melt congruently at 1703 and 1413 K.
Phase transition	1422 K	1422	congruent transformation	model	[1] Jun 2008	p. 4 report	The calculated congruent-melting points of the Sc5 Ga3 and ScGa2 phases are 1710 and 1422 K, respectively, which fit well with the work of Yatsenko et al. [21].
Phase transition	1503 K	1503	Sc5Ga4	experimental	[1] Jun 2008 cites Yatsenko 1979 doi	p. 1 report	Among them, Sc5 Ga4 , ScGa and ScGa3 decompose at 1503, 1363 and 1303 K, respectively.
Phase transition	1703 K	1703	congruent transformation	experimental	[1] Jun 2008	p. 1 report	Sc5 Ga3 and ScGa2 melt congruently at 1703 and 1413 K.
Phase transition	1710 K	1710	congruent transformation	model	[1] Jun 2008	p. 4 report	The calculated congruent-melting points of the Sc5 Ga3 and ScGa2 phases are 1710 and 1422 K, respectively, which fit well with the work of Yatsenko et al. [21].

Sources

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

Z.K. Jun, L.B. Liu, H.S. Liu, X.M. Huang, Z.P. Jin, Thermodynamic assessment of the Ga–Sc and Ga–Tb systems, Journal of Alloys and Compounds 463, 511-515 (2008). doi:10.1016/j.jallcom.2007.09.067

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}
}