Mg–Tl system

15 accepted literature values from 1 paper(s) (experimental 8, model 7); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (7) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	8
model	7

Accepted values by property group
Property group	Values
invariant reaction	10
phase transition	4
formation	1

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
MgTl-08Liu.tdb	Y. Liu, D. Liang, J. Alloys Compd., 459, 286-90(2008). doi:10.1016/j.jallcom.2007.04.031	`e8378fccc52d0d12f2313e676963dcfd08817b258db84355a4d93ff1bc732475`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
MgTl-08Liu.tdb	678.52	HCP_A3 (x(Tl) 0.16108) + LIQUID (x(Tl) 0.24224) + MG5TL2_D8G (x(Tl) 0.28571)
MgTl-08Liu.tdb	678.52	HCP_A3 (x(Tl) 0.16107) + LIQUID (x(Tl) 0.24223) + MG5TL2_D8G (x(Tl) 0.28571)
MgTl-08Liu.tdb	664.5	MG5TL2_D8G (x(Tl) 0.28571) + MG2TL_C22 (x(Tl) 0.33333) + LIQUID (x(Tl) 0.36046)
MgTl-08Liu.tdb	664.5	MG5TL2_D8G (x(Tl) 0.28571) + MG2TL_C22 (x(Tl) 0.33333) + LIQUID (x(Tl) 0.36042)
MgTl-08Liu.tdb	624.83	MG2TL_C22 (x(Tl) 0.33333) + LIQUID (x(Tl) 0.44832) + MGTL_B2 (x(Tl) 0.5)
MgTl-08Liu.tdb	624.83	MG2TL_C22 (x(Tl) 0.33333) + LIQUID (x(Tl) 0.44805) + MGTL_B2 (x(Tl) 0.5)
MgTl-08Liu.tdb	624.83	MG2TL_C22 (x(Tl) 0.33333) + LIQUID (x(Tl) 0.44871) + MGTL_B2 (x(Tl) 0.5)
MgTl-08Liu.tdb	545.12	LIQUID (x(Tl) 0.94831) + HCP_A3 (x(Tl) 0.99287) + BCC_A2 (x(Tl) 0.99975)
MgTl-08Liu.tdb	474.84	MGTL_B2 (x(Tl) 0.5) + LIQUID (x(Tl) 0.81635) + HCP_A3 (x(Tl) 0.9682)
MgTl-08Liu.tdb	474.84	MGTL_B2 (x(Tl) 0.5) + LIQUID (x(Tl) 0.81616) + HCP_A3 (x(Tl) 0.96815)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Mg–Tl system (10)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
678.5	eutectic: Liquid -> hcp + Mg5Tl2	Liquid: Tl 0.242; hcp: Tl 0.161; Mg5Tl2: Tl 0.285714	model	[1] Liu 2008	Table 2, p. 4, row 1 report
678.3	eutectic: Liquid -> hcp + Mg5Tl2	Liquid: Tl 0.25; hcp: Tl 0.154; Mg5Tl2: Tl 0.285714	experimental	[1] Liu 2008 cites Hume-Rothery 1938	Table 2, p. 4, row 2 report
665	Liquid + Mg5Tl2 -> Mg2Tl	Liquid: Tl 0.343; Mg5Tl2: Tl 0.285714; Mg2Tl: Tl 0.333333	experimental	[1] Liu 2008 cites Grube 1934 doi	Table 2, p. 4, row 6 report
664.5	Liquid + Mg5Tl2 -> Mg2Tl	Liquid: Tl 0.361; Mg5Tl2: Tl 0.285714; Mg2Tl: Tl 0.333333	model	[1] Liu 2008	Table 2, p. 4, row 5 report
626	eutectic: Liquid -> Mg2Tl + MgTl	Liquid: Tl 0.425; Mg2Tl: Tl 0.333333; MgTl: Tl 0.5	experimental	[1] Liu 2008 cites Grube 1934 doi	Table 2, p. 4, row 8 report
624.8	eutectic: Liquid -> Mg2Tl + MgTl	Liquid: Tl 0.448; Mg2Tl: Tl 0.333333; MgTl: Tl 0.5	model	[1] Liu 2008	Table 2, p. 4, row 7 report
477.4	eutectic: Liquid -> MgTl + bcc	Liquid: Tl 0.813; MgTl: Tl 0.5; bcc: Tl 0.959	model	[1] Liu 2008	Table 2, p. 4, row 11 report
475	eutectic: Liquid -> MgTl + bcc	Liquid: Tl 0.8; MgTl: Tl 0.5; bcc: Tl 0.952	experimental	[1] Liu 2008 cites Grube 1934 doi	Table 2, p. 4, row 12 report
433	bcc -> MgTl + hcp	bcc: Tl 0.95; MgTl: Tl 0.5; hcp: Tl 0.97	experimental	[1] Liu 2008 cites Grube 1905	Table 2, p. 4, row 14 report
432.2	bcc -> MgTl + hcp	bcc: Tl 0.971; MgTl: Tl 0.5; hcp: Tl 0.979	model	[1] Liu 2008	Table 2, p. 4, row 13 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, Mg–Tl system (1)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location	Quote
MgTl		-24.3 unspecified ± 4.2	600	experimental			[1] Liu 2008 cites Kubaschewski 1941	p. 2 report	The only value reported for the enthalpy of formation of MgTl is -24.3 ± 4.2 kJ/mol atoms [11], which was determined at 600 K by an adiabatic high-temperature calorimeter with all the starting materials having a purity of 99.96%.

Other properties

Phase transition (4)

Phase transition, Mg–Tl system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	631 K	631	Liquid -> MgTl Liquid: Tl 0.5; MgTl: Tl 0.5	experimental	[1] Liu 2008 cites Grube 1934 doi	Table 2, p. 4, row 10 report
Phase transition	631.9 K	631.9	Liquid -> MgTl Liquid: Tl 0.5; MgTl: Tl 0.5	model	[1] Liu 2008	Table 2, p. 4, row 9 report
Phase transition	686 K	686	Mg5Tl2 -> liquid Mg5Tl2: Tl 0.285714; liquid: Tl 0.285714	experimental	[1] Liu 2008 cites Grube 1934 doi	Table 2, p. 4, row 4 report
Phase transition	687.5 K	687.5	Mg5Tl2 -> liquid Mg5Tl2: Tl 0.285714; liquid: Tl 0.285714	model	[1] Liu 2008	Table 2, p. 4, row 3 report

Sources

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

Yajun Liu, Dong Liang, Thermodynamic reevaluation of the Mg–Tl system, Journal of Alloys and Compounds 459, 286-290 (2008). doi:10.1016/j.jallcom.2007.04.031

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}
}