Mg–Tl phases

7 phases (tier A 6, liquid 1); 6 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: interactive registry · full JSON · Mg–Tl system page · Markdown · field reference

Phases of the Mg–Tl system (7)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:mg-tl:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 506.13–2499.5 K, x(Tl) 0.99975–1	4	1
FCC_A1 phase:mg-tl:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
HCP_A3 phase:mg-tl:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–923.52 K, x(Tl) 0–1	4	1
LIQUID phase:mg-tl:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 474.84–2500 K, x(Tl) 0–1	12	1
MG2TL_C22 phase:mg-tl:mg2tl-c22	Fe2P · C22 · hP9 · P-62m (189)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–664.5 K, x(Tl) 0.33333–0.33333	4	1
MG5TL2_D8G phase:mg-tl:mg5tl2-d8g	Ga2Mg5 · D8_g · oI28 · Ibam (72)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–687.41 K, x(Tl) 0.28571–0.28571	6	1
MGTL_B2 phase:mg-tl:mgtl-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–631.88 K, x(Tl) 0.5–0.5	8	1

BCC_A2 (Mg–Tl)

Id: phase:mg-tl:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 506.13–2499.5 K, x(Tl) 0.99975–1
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:mg-tl:bcc-a2
paper: paper:10.1016/j.jallcom.2007.04.031:bcc
tdb: tdb:MgTl-08Liu.tdb:BCC_A2

TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written

MgTl-08Liu.tdb: BCC_A2, type code %B, sha256 e8378fccc52d0d12…

31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : MG TL% : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2007.04.031 Yajun Liu, Dong Liang, Thermodynamic reevaluation of the Mg–Tl system, Journal of Alloys and Compounds 459, 286-290 (2008).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19340400213 G. Grube, J. Hille, Z. Electrochem. 40 (1934) 101–106.
cited as the source of values for this phase

FCC_A1 (Mg–Tl)

Id: phase:mg-tl:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mg-tl:fcc-a1
tdb: tdb:MgTl-08Liu.tdb:FCC_A1

TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written

MgTl-08Liu.tdb: FCC_A1, type code %A, sha256 e8378fccc52d0d12…

26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : MG TL : VA : !

Example references (1 of 1; assessments first):

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

HCP_A3 (Mg–Tl)

Id: phase:mg-tl:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 300–923.52 K, x(Tl) 0–1
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:mg-tl:hcp-a3
paper: paper:10.1016/j.jallcom.2007.04.031:hcp
tdb: tdb:MgTl-08Liu.tdb:HCP_A3

TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written

MgTl-08Liu.tdb: HCP_A3, type code %A, sha256 e8378fccc52d0d12…

36: PHASE HCP_A3 %A 2 1 0.5 !
37: CONST HCP_A3 : MG% TL% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2007.04.031 Yajun Liu, Dong Liang, Thermodynamic reevaluation of the Mg–Tl system, Journal of Alloys and Compounds 459, 286-290 (2008).
assessment that models this phase; reports values for this phase

LIQUID (Mg–Tl)

Id: phase:mg-tl:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 474.84–2500 K, x(Tl) 0–1
Literature: 12 values (12 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:mg-tl:liquid
paper: paper:10.1016/j.jallcom.2007.04.031:Liquid, paper:10.1016/j.jallcom.2007.04.031:liquid
tdb: tdb:MgTl-08Liu.tdb:LIQUID

TDB models of LIQUID (1): PHASE and CONSTITUENT statements as written

MgTl-08Liu.tdb: LIQUID, type code %, sha256 e8378fccc52d0d12…

21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : MG TL : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2007.04.031 Yajun Liu, Dong Liang, Thermodynamic reevaluation of the Mg–Tl system, Journal of Alloys and Compounds 459, 286-290 (2008).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19340400213 G. Grube, J. Hille, Z. Electrochem. 40 (1934) 101–106.
cited as the source of values for this phase

MG2TL_C22 (Mg–Tl)

Id: phase:mg-tl:mg2tl-c22; status assigned
Structure: Fe2P · C22 · hP9 · P-62m (189); type st:c22-fe2p-hp9; tier A: standard phase name; confidence high
Stoichiometry: Mg 0.6667, Tl 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–664.5 K, x(Tl) 0.33333–0.33333
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:mg-tl:mg2tl-c22
paper: paper:10.1016/j.jallcom.2007.04.031:Mg2Tl
tdb: tdb:MgTl-08Liu.tdb:MG2TL_C22

TDB models of MG2TL_C22 (1): PHASE and CONSTITUENT statements as written

MgTl-08Liu.tdb: MG2TL_C22, type code %, sha256 e8378fccc52d0d12…

46: PHASE MG2TL_C22 % 2 2 1 !
47: CONST MG2TL_C22 : MG : TL : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2007.04.031 Yajun Liu, Dong Liang, Thermodynamic reevaluation of the Mg–Tl system, Journal of Alloys and Compounds 459, 286-290 (2008).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19340400213 G. Grube, J. Hille, Z. Electrochem. 40 (1934) 101–106.
cited as the source of values for this phase

MG5TL2_D8G (Mg–Tl)

Id: phase:mg-tl:mg5tl2-d8g; status assigned
Structure: Ga2Mg5 · D8_g · oI28 · Ibam (72); type st:d8-g-ga2mg5-oi28; tier A: standard phase name; confidence high
Stoichiometry: Mg 0.7143, Tl 0.2857
Stability: stable in 1 of 1 calculated diagram(s): 300–687.41 K, x(Tl) 0.28571–0.28571
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:mg-tl:mg5tl2-d8g
paper: paper:10.1016/j.jallcom.2007.04.031:Mg5Tl2
tdb: tdb:MgTl-08Liu.tdb:MG5TL2_D8G

TDB models of MG5TL2_D8G (1): PHASE and CONSTITUENT statements as written

MgTl-08Liu.tdb: MG5TL2_D8G, type code %, sha256 e8378fccc52d0d12…

41: PHASE MG5TL2_D8G % 2 5 2 !
42: CONST MG5TL2_D8G : MG : TL : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2007.04.031 Yajun Liu, Dong Liang, Thermodynamic reevaluation of the Mg–Tl system, Journal of Alloys and Compounds 459, 286-290 (2008).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19340400213 G. Grube, J. Hille, Z. Electrochem. 40 (1934) 101–106.
cited as the source of values for this phase

MGTL_B2 (Mg–Tl)

Id: phase:mg-tl:mgtl-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Stoichiometry: Mg 0.5000, Tl 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–631.88 K, x(Tl) 0.5–0.5
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:mg-tl:mgtl-b2
paper: paper:10.1016/j.jallcom.2007.04.031:MgTl
tdb: tdb:MgTl-08Liu.tdb:MGTL_B2

TDB models of MGTL_B2 (1): PHASE and CONSTITUENT statements as written

MgTl-08Liu.tdb: MGTL_B2, type code %, sha256 e8378fccc52d0d12…

51: PHASE MGTL_B2 % 2 1 1 !
52: CONST MGTL_B2 : MG : TL : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2007.04.031 Yajun Liu, Dong Liang, Thermodynamic reevaluation of the Mg–Tl system, Journal of Alloys and Compounds 459, 286-290 (2008).
assessment that models this phase; reports values for this phase
doi:10.1002/bbpc.19340400213 G. Grube, J. Hille, Z. Electrochem. 40 (1934) 101–106.
cited as the source of values for this phase

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735970
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 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); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). 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_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  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}
}