Au–Tm system

54 accepted literature values from 1 paper(s) (experimental 30, model 18, DFT 6); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (11) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	30
model	18
DFT	6

Accepted values by property group
Property group	Values
invariant reaction	22
formation	16
crystal structure	16

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
AuTm-12Don.tdb	H.Q. Dong, X.M. Tao, T. Laurila, M. Paulastro-Krockel, Calphad, 37, 87-93(2012). doi:10.1016/j.calphad.2012.02.002	`97665efb6ffc621ef45c8ee6f593168ca0128f303b5c6215db74658482503a7b`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AuTm-12Don.tdb	1903.63	AUTM_B33 (x(Tm) 0.5) + AUTM_B2 (x(Tm) 0.5) + LIQUID (x(Tm) 0.53256)
AuTm-12Don.tdb	1903.63	LIQUID (x(Tm) 0.46808) + AUTM_B33 (x(Tm) 0.5) + AUTM_B2 (x(Tm) 0.5)
AuTm-12Don.tdb	1625.81	LIQUID (x(Tm) 0.38577) + AU10TM7 (x(Tm) 0.41176) + AUTM_B33 (x(Tm) 0.5)
AuTm-12Don.tdb	1625.81	LIQUID (x(Tm) 0.38584) + AU10TM7 (x(Tm) 0.41176) + AUTM_B33 (x(Tm) 0.5)
AuTm-12Don.tdb	1621.63	AU2TM_C11B (x(Tm) 0.33333) + LIQUID (x(Tm) 0.38271) + AU10TM7 (x(Tm) 0.41176)
AuTm-12Don.tdb	1621.63	AU2TM_C11B (x(Tm) 0.33333) + LIQUID (x(Tm) 0.38265) + AU10TM7 (x(Tm) 0.41176)
AuTm-12Don.tdb	1554.8	AU3TM_D0A (x(Tm) 0.25) + LIQUID (x(Tm) 0.26525) + AU2TM_C11B (x(Tm) 0.33333)
AuTm-12Don.tdb	1554.79	AU3TM_D0A (x(Tm) 0.25) + LIQUID (x(Tm) 0.26509) + AU2TM_C11B (x(Tm) 0.33333)
AuTm-12Don.tdb	1438.29	AUTM_B33 (x(Tm) 0.5) + LIQUID (x(Tm) 0.66374) + AUTM2_C37 (x(Tm) 0.66667)
AuTm-12Don.tdb	1438.29	AUTM_B33 (x(Tm) 0.5) + LIQUID (x(Tm) 0.66355) + AUTM2_C37 (x(Tm) 0.66667)
AuTm-12Don.tdb	1309.39	LIQUID (x(Tm) 0.16632) + AU4TM_D1A (x(Tm) 0.2) + AU3TM_D0A (x(Tm) 0.25)
AuTm-12Don.tdb	1298.12	AUTM2_C37 (x(Tm) 0.66667) + LIQUID (x(Tm) 0.78466) + HCP_A3 (x(Tm) 0.99459)
AuTm-12Don.tdb	1298.12	AUTM2_C37 (x(Tm) 0.66667) + LIQUID (x(Tm) 0.78469) + HCP_A3 (x(Tm) 0.99459)
AuTm-12Don.tdb	1113.01	FCC_A1 (x(Tm) 0.07418) + LIQUID (x(Tm) 0.11373) + AU4TM_D1A (x(Tm) 0.2)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Au–Tm system (22)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1993	congruent melting: L <=> βAuTm	L: Au 0.5, Tm 0.5; βAuTm: Au 0.5, Tm 0.5	model	[1] Dong 2012	Table 3, p. 3, row 6 report
1993	congruent melting: L <=> βAuTm	L: Au 0.5; βAuTm: Au 0.5, Tm 0.5	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 3, p. 3, row 5 report
1904	polymorphic: βAuTm <=> αAuTm	βAuTm: Au 0.5, Tm 0.5; αAuTm: Au 0.5, Tm 0.5	model	[1] Dong 2012	Table 3, p. 3, row 8 report
1903	polymorphic: βAuTm <=> αAuTm	βAuTm: Au 0.5, Tm 0.5; αAuTm: Au 0.5, Tm 0.5	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 3, p. 3, row 7 report
1703	congruent melting: L <=> Au2Tm	L: Au 0.667; Au2Tm: Au 0.666667, Tm 0.333333	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 3, p. 3, row 13 report
1690	congruent melting: L <=> Au2Tm	L: Au 0.666667, Tm 0.333333; Au2Tm: Au 0.666667, Tm 0.333333	model	[1] Dong 2012	Table 3, p. 3, row 14 report
1626	L + αAuTm <=> Au10Tm7	L: Au 0.614; αAuTm: Au 0.5, Tm 0.5; Au10Tm7: Au 0.588235, Tm 0.411765	model	[1] Dong 2012	Table 3, p. 3, row 10 report
1622	L <=> Au2Tm + Au10Tm7	L: Au 0.617; Au2Tm: Au 0.666667, Tm 0.333333; Au10Tm7: Au 0.588235, Tm 0.411765	model	[1] Dong 2012	Table 3, p. 3, row 12 report
1618	L + αAuTm <=> Au10Tm7	L: Au 0.6; αAuTm: Au 0.5, Tm 0.5; Au10Tm7: Au 0.588235, Tm 0.411765	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 3, p. 3, row 9 report
1593	L <=> Au2Tm + Au10Tm7	L: Au 0.62; Au2Tm: Au 0.666667, Tm 0.333333; Au10Tm7: Au 0.588235, Tm 0.411765	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 3, p. 3, row 11 report
1573	congruent melting: L <=> Au3Tm	L: Au 0.75; Au3Tm: Au 0.75, Tm 0.25	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 3, p. 3, row 17 report
1563	congruent melting: L <=> Au3Tm	L: Au 0.75, Tm 0.25; Au3Tm: Au 0.75, Tm 0.25	model	[1] Dong 2012	Table 3, p. 3, row 18 report
1555	L <=> Au2Tm + Au3Tm	L: Au 0.735; Au2Tm: Au 0.666667, Tm 0.333333; Au3Tm: Au 0.75, Tm 0.25	model	[1] Dong 2012	Table 3, p. 3, row 16 report
1543	L <=> Au2Tm + Au3Tm	L: Au 0.73; Au2Tm: Au 0.666667, Tm 0.333333; Au3Tm: Au 0.75, Tm 0.25	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 3, p. 3, row 15 report
1441	L + αAuTm <=> AuTm2	L: Au 0.336; αAuTm: Au 0.5, Tm 0.5; AuTm2: Au 0.333333, Tm 0.666667	model	[1] Dong 2012	Table 3, p. 3, row 4 report
1433	L + αAuTm <=> AuTm2	L: Au 0.31; αAuTm: Au 0.5, Tm 0.5; AuTm2: Au 0.333333, Tm 0.666667	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 3, p. 3, row 3 report
1310	L + Au3Tm <=> Au4Tm	L: Au 0.834; Au3Tm: Au 0.75, Tm 0.25; Au4Tm: Au 0.8, Tm 0.2	model	[1] Dong 2012	Table 3, p. 3, row 20 report
1308	L <=> Tm(hcp) + AuTm2	L: Au 0.24; AuTm2: Au 0.333333, Tm 0.666667	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 3, p. 3, row 1 report
1308	L + Au3Tm <=> Au4Tm	L: Au 0.83; Au3Tm: Au 0.75, Tm 0.25; Au4Tm: Au 0.8, Tm 0.2	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 3, p. 3, row 19 report
1301	L <=> Tm(hcp) + AuTm2	L: Au 0.215; Tm(hcp): Au 0.005; AuTm2: Au 0.333333, Tm 0.666667	model	[1] Dong 2012	Table 3, p. 3, row 2 report
1113	L <=> Au4Tm + Au(fcc)	L: Au 0.886; Au4Tm: Au 0.8, Tm 0.2; Au(fcc): Au 0.926	model	[1] Dong 2012	Table 3, p. 3, row 22 report
1113	L <=> Au4Tm + Au(fcc)	L: Au 0.89; Au4Tm: Au 0.8, Tm 0.2; Au(fcc): Au 0.935	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 3, p. 3, row 21 report

Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from dft_parity.json.

Enthalpies of formation, Au–Tm system (16)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
Au10Tm7		-87.6 kJ/mol-atom	298.15	model			[1] Dong 2012	Table 1, p. 2, row 47 report
Au2Tm	Au2Tm	-91.6 kJ/mol-atom ± 2.3	298.15	experimental	-85.835 (mp-aaaaaavo)	-85.794 (oqmd-1895441)	[1] Dong 2012 cites Meschel 2004 doi	Table 1, p. 2, row 50 report
Au2Tm	Au2Tm	-82.7 kJ/mol-atom	298.15	model	-85.835 (mp-aaaaaavo)	-85.794 (oqmd-1895441)	[1] Dong 2012	Table 1, p. 2, row 51 report
Au2Tm		-59.4 kJ/mol-atom	0	DFT			[1] Dong 2012	Table 1, p. 2, row 49 report
Au3Tm	Au3Tm	-72.7 kJ/mol-atom ± 2.1	298.15	experimental	-69.952 (mp-aaabgipr)	-70.135 (oqmd-28227)	[1] Dong 2012 cites Meschel 2004 doi	Table 1, p. 2, row 54 report
Au3Tm		-71.5 kJ/mol-atom	0	DFT			[1] Dong 2012	Table 1, p. 2, row 53 report
Au3Tm	Au3Tm	-69.2 kJ/mol-atom	298.15	model	-69.952 (mp-aaabgipr)	-70.135 (oqmd-28227)	[1] Dong 2012	Table 1, p. 2, row 55 report
Au4Tm	Au4Tm	-61.6 kJ/mol-atom	298.15	model	-58.494 (mp-aaaciuki)	-58.268 (oqmd-28228)	[1] Dong 2012	Table 1, p. 2, row 58 report
Au4Tm		-59.5 kJ/mol-atom	0	DFT			[1] Dong 2012	Table 1, p. 2, row 57 report
AuTm2	AuTm2	-70 kJ/mol-atom	298.15	model	-63.921 (mp-aaackivy)	-64.161 (oqmd-1800555)	[1] Dong 2012	Table 1, p. 2, row 38 report
AuTm2		-65.5 kJ/mol-atom	0	DFT			[1] Dong 2012	Table 1, p. 2, row 37 report
αAuTm	AuTm	-92.8 kJ/mol-atom ± 1.9	298.15	experimental	-87.323 (mp-aaacfxex)	-87.084 (oqmd-28226)	[1] Dong 2012 cites Meschel 2004 doi	Table 1, p. 2, row 41 report
αAuTm	AuTm	-90.5 kJ/mol-atom	298.15	model	-87.323 (mp-aaacfxex)	-87.084 (oqmd-28226)	[1] Dong 2012	Table 1, p. 2, row 42 report
αAuTm		-90 kJ/mol-atom	0	DFT			[1] Dong 2012	Table 1, p. 2, row 40 report
βAuTm		-87.5 kJ/mol-atom	0	DFT			[1] Dong 2012	Table 1, p. 2, row 44 report
βAuTm	AuTm	-68.9 kJ/mol-atom	298.15	model	-87.323 (mp-aaacfxex)	-87.084 (oqmd-28226)	[1] Dong 2012	Table 1, p. 2, row 45 report

Other properties

Crystal structure (16)

Crystal structure, Au–Tm system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a printed: lattice parameter a	10.08 Å	298.15	Au10Tm7 alloy: Tm 0.411765	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 48 report
Lattice a printed: a	3.644 Å	298.15	Au2Tm alloy: Tm 0.333333	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 52 report
Lattice a printed: a	6.016 Å	298.15	Au3Tm alloy: Tm 0.25	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 56 report
Lattice a printed: a	6.634 Å	298.15	Au4Tm alloy: Tm 0.2	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 59 report
Lattice a printed: a	6.958 Å	298.15	AuTm2 alloy: Tm 0.666667	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 39 report
Lattice a printed: a	3.62 Å	298.15	αAuTm alloy: Tm 0.5	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 43 report
Lattice a printed: a	3.519 Å	298.15	βAuTm alloy: Tm 0.5	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 46 report
Lattice b printed: lattice parameter b	4.943 Å	298.15	Au3Tm alloy: Tm 0.25	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 56 report
Lattice b printed: lattice parameter b	4.834 Å	298.15	AuTm2 alloy: Tm 0.666667	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 39 report
Lattice b printed: lattice parameter b	10.78 Å	298.15	αAuTm alloy: Tm 0.5	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 43 report
Lattice c printed: c	27.48 Å	298.15	Au10Tm7 alloy: Tm 0.411765	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 48 report
Lattice c printed: lattice parameter c	8.896 Å	298.15	Au2Tm alloy: Tm 0.333333	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 52 report
Lattice c printed: c	5.071 Å	298.15	Au3Tm alloy: Tm 0.25	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 56 report
Lattice c printed: c	4.141 Å	298.15	Au4Tm alloy: Tm 0.2	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 59 report
Lattice c printed: lattice parameter c	8.767 Å	298.15	AuTm2 alloy: Tm 0.666667	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 39 report
Lattice c printed: c	4.57 Å	298.15	αAuTm alloy: Tm 0.5	experimental	[1] Dong 2012 cites Saccone 2002 doi	Table 1, p. 2, row 43 report

Sources

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

H.Q. Dong, X.M. Tao, T. Laurila, M. Paulasto-Kröckel, Thermodynamic assessment of Au–Ho and Au–Tm binary systems, Calphad 37, 87-93 (2012). doi:10.1016/j.calphad.2012.02.002

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}
}